6/13/17, 9:05 AMMac Pro CPU Compatibility List | MacRumors Forums

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Mac Pro CPU Compatibility ListDiscussion in 'Mac Pro' started by ActionableMango, ! Feb 5, 2016.

Thread Status: The first post in this thread is a WikiPost, and can be edited by anyone with the appropriate permissions.

Last edited by jclmavg: ! Apr 21, 2017 Feb 5, 2016

Bokkow and I have created a mac pro CPU compatibility list. The intent is tocover all relevant and compatible CPU upgrades for all Mac Pros. These areasked about over and over and over again, so I thought it would be nice tohave it all in one place.

Constructive criticism, corrections to errors, pointing out omissions, etc. are allwelcome. My intent is, after the content matures, to turn this first post into awiki so that anyone can maintain it going forward from there.

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Notes:

Any and all information here may be incorrect. Use at your ownrisk.This list only includes CPUs that I have found verification for. Thisincludes anything offered by Apple (BTO/CTO), third party upgradeguides and commercial services (such as Barefeats, OWC, orxlr8yourmac), or simply individuals claiming personal success in a forumsomewhere (such as MacRumors and Netkas). There are probably many

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6/13/17, 9:05 AMMac Pro CPU Compatibility List | MacRumors Forums

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unverified CPUs that work, but these are not listed.Memory speed is included in these charts. This is important because insome cases the CPU choice makes a difference.Upgrading to a higher TDP (wattage) processor may increasetemperatures and/or fan speed at max load. Macs Fan Control is apopular way to control your Mac's fan and it is available for both OS Xand Windows, unlike most Mac fan software.Some used CPUs for sale on Ebay and elsewhere are Intel EngineeringSamples. You can read more about these here, but they are basically"beta" versions of the CPU provided to OEMs for testing. These may ormay not work in a Mac Pro. In my research at least one person boughtan engineering sample that didn't work. Since Intel only loans them outand never sells them, they can also be considered stolen property.

Key Description- Not compatiblex Compatiblex* Compatible, but see notes about firmware update

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Mac Pro 6,1

128GB maximum RAM

Architecture Cores Grade CPU-Model GHz RAM WattIvy-Bridge 12 core Dual Xeon E5-2697 V2 2.7 1866 130WIvy-Bridge 12 core Dual Xeon E5-2696 V2 2.5 1866 130WIvy-Bridge 10 core Dual Xeon E5-2690 V2 3.0 1866 130WIvy-Bridge 10 core Dual Xeon E5-2680 V2 2.8 1866 115WIvy-Bridge 8 core Dual Xeon E5-2667 V2 3.3 1866 130WIvy-Bridge 8 core Dual Xeon E5-2673 V2 3.3 1866 110WIvy-Bridge 8 core Dual Xeon E5-1680 V2 3.0 1866 130WIvy-Bridge 6 core Dual Xeon E5-1660 V2 3.7 1866 130WIvy-Bridge 6 core Dual Xeon E5-1650 V2 3.5 1866 130WIvy-Bridge 4 core Dual Xeon E5-1620 V2 3.7 1866 130W

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Mac Pro 5,1 and 4,1Xserve 3,1

Maximum RAM:56GB in a single-processor Mac Pro using a single-processor-capable Xeon64GB in a single-processor Mac Pro using a dual-processor-capableXeon128GB in a dual-processor Mac Pro48GB for a single-processor Xserve96GB in a dual-processor Xserve

For the 4,1 to use Westmere CPUs and run RAM at 1333, it will need the

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firmware upgrade to 5,1, found here:http://forum.netkas.org/index.php/topic,852.0.html5,1 Mac Pros shipped with 1333 RAM even when paired with a Nehalem(1066 only) processor. As shipped, the RAM runs at 1066 because of theCPU. However, if you upgrade to a 1333-capable CPU, your RAM will runat 1333 after an NVRAM reset.Installing a single "Dual Xeon" processor into a single-processor Mac Proworks fine, and actually increases its maximum RAM from 56 to 64GB.Installing just one single-processor-model CPU into a dual-processor MacPro technically works, but this causes an error state with the CPU fangoing full blast.For two CPUs, you must install two "Dual Xeon" processors. You cannotuse two i7 or single Xeon processors.The X#### CPU's tend to have a slightly higher maximum temperaturerating than their W#### equivalents.4,1 dual-processor Mac Pro uses a special, "lidless" CPUs (the single-processor models use normal CPUs). This has a different height than thenormal CPUs, so if you upgrade a dual-processor 4,1 Mac Pro withdifferent processors, you need to deal with the height difference. Thereare several ways to do this:

Buy CPUs that someone has already de-lidded.Buy normal CPUs and de-lid them yourself. Here is thread aboutdelidding yourself and here is a video. (And here is a post warningagainst delidding yourself.)Buy normal CPUs and pay for de-lidding service.Keep the lids on, but be extremely careful about not tighteningdown the heat sink too much. (If you don't remove the lids it isvery easy to tighten down the heat sink screws too much on a CPUthat's too large, resulting in damage to the socket, CPU, and/orboard.)Other people have kept the lids on, but added washer stacks (ofequivalent height to the lid difference) to where the tighteningscrews go--this is intended to prevent the heat sink fromovertightening and causing damage. Here is an informationalwasher stack thread, and here is a really good post with picturesand a step-by-step procedure.If you keep the lids on, the existing heat pad won't reach the heatsink due to the extra height of the lids. You need to make up forthis gap by replacing the heat pad with a thicker pad.

The Xserve 3,1 uses lidless CPUs for both single-CPU and double-CPUmodels. We don't know if the washer-stack trick will work in Xserves asthey are physically different than MP, but the other solutions shouldwork.No, the X5687 (3.6GHz quad-core) and the X5698 (4.4GHz dual-core) donot work in Mac Pros. I don't want to list every CPU that doesn't workwith a Mac, but these two are asked about often enough to include here,and they've been verified as not working.

Architecture Cores Grade CPU-Model GHz RAM Watt MP4,1 MP5,1 XS3,1

Westmere 6 coreDualXeon

X5690 3.46 1333 130W x* x -

Westmere 6 coreDualXeon

X5680 3.33 1333 130W x* x -

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Westmere 6 core DualXeon

X5679 3.2 1066 115W x* x -

Westmere 6 coreDualXeon

X5675 3.06 1333 95W x* x -

Westmere 6 coreDualXeon

X5670 2.93 1333 95W x* x -

Westmere 6 coreDualXeon

X5660 2.8 1333 95W x* x -

Westmere 6 coreDualXeon

X5650 2.66 1333 95W x* x -

Westmere 6 coreDualXeon

E5659 2.53 1333 80W x* x -

Westmere 6 coreDualXeon

E5645 2.4 1333 80W x* x -

Westmere 6 coreDualXeon

L5639 2.13 1333 60W x* x -

Westmere 6 core Xeon W3690 3.46 1333 130W x* x -Westmere 6 core Xeon W3680 3.33 1333 130W x* x -Westmere 6 core Xeon W3670 3.2 1066 130W x* x -Westmere 6 core Consumer i7 990X 3.46 1066 130W x* x -Westmere 6 core Consumer i7 980X 3.33 1066 130W x* x -Westmere 6 core Consumer i7 970 3.2 1066 130W x* x -

Westmere 4 coreDualXeon

X5687 3.6 1333 130W - - -

Westmere 4 coreDualXeon

X5677 3.46 1333 130W x* x -

Westmere 4 coreDualXeon

X5672 3.2 1333 95W x* x -

Westmere 4 coreDualXeon

X5667 3.06 1333 95W x* x -

Westmere 4 coreDualXeon

X5647 2.93 1066 130W x* x -

Westmere 4 coreDualXeon

E5640 2.66 1066 80W x* x -

Westmere 4 coreDualXeon

E5630 2.53 1066 80W x* x -

Westmere 4 coreDualXeon

E5620 2.4 1066 80W x* x -

Westmere 2 coreDualXeon

X5698 4.4 1333 130W - - -

Nehalem 4 coreDualXeon

W5590 3.33 1333 130W x x -

Nehalem 4 coreDualXeon

W5580 3.2 1333 130W x x -

Nehalem 4 coreDualXeon

X5570 2.93 1333 95W x x x

Nehalem 4 coreDualXeon

X5560 2.8 1333 95W x x -

Nehalem 4 coreDualXeon

X5550 2.66 1333 95W x x x

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Nehalem 4 core DualXeon

E5540 2.53 1066 80W x x -

Nehalem 4 coreDualXeon

E5530 2.4 1066 80W x x -

Nehalem 4 coreDualXeon

E5520 2.26 1066 80W x x x

Nehalem 4 core Xeon W3580 3.33 1333 130W x x -Nehalem 4 core Xeon W3570 3.2 1333 130W x x -Nehalem 4 core Xeon W3565 3.2 1066 130W x x -Nehalem 4 core Xeon W3540 2.93 1066 130W x x -Nehalem 4 core Xeon W3530 2.8 1066 130W x x -Nehalem 4 core Xeon W3520 2.66 1066 130W x x -Nehalem 4 core Consumer i7 975 3.33 1066 130W x x -Nehalem 4 core Consumer i7 965 3.2 1066 130W x x -Nehalem 4 core Consumer i7 960 3.2 1066 130W x x -Nehalem 4 core Consumer i7 950 3.06 1066 130W x x -Nehalem 4 core Consumer i7 940 2.93 1066 130W x x -Nehalem 4 core Consumer i7 930 2.8 1066 130W x x -Nehalem 4 core Consumer i7 920 2.66 1066 130W x x -

* Requires 4,1 to 5,1 firmware upgrade

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Mac Pro 3,1Xserve 2,1

64GB maximum RAMThe 3,1 MP is not compatible with all steppings. Processors with a 5-digitsSpec starting with "SLB" do not work. Those that start with "SLA" work.The sSpec is marked on the top of the processor. sSpec numbers listedin this table should work.

Architecture Cores GradeCPU-Model

sSpec GHz RAM Watt MP3,1 XS2,1

Harpertown 4 coreDualXeon

X5482 SLANZ 3.2 800 150W x -

Harpertown 4 coreDualXeon

X5460 SLANP 3.16 667 120W x -

Harpertown 4 coreDualXeon

E5472 SLANR 3.0 800 80W x x

Harpertown 4 coreDualXeon

X5472 SLASA 3.0 800 120W x -

Harpertown 4 coreDualXeon

X5450 SLASB 3.0 667 120W x -

Harpertown 4 coreDualXeon

E5440 SLANS 2.83 667 80W x -

Harpertown 4 coreDualXeon

E5462 SLANT 2.8 800 80W x x

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Mac Pro 2,1 and 1,1Xserve 1,1

32GB maximum RAM for 1,1 (increases to 64GB if flashed with 2,1firmware)64GB maximum RAM for 2,1For the 1,1 to use Clovertown CPUs properly, it needs a firmware flashedto 2,1.The 1,1 to 2,1 firmware flash requires Snow Leopard (or newer) to run.It can be found here:http://forum.netkas.org/index.php/topic,1094.0.html

Architecture Cores GradeCPU-Model

sSpec Stepping GHz RAMWatt**(TDP)

Watt**(idle)

MP1,1

Clovertown 4 coreDualXeon

X5365 SLAC3 B3 3.0 667 150W 50W x*

Clovertown 4 coreDualXeon

X5365 SLAED G0 3.0 667 120W 25W x*

Clovertown 4 coreDualXeon

X5355 SLAC4 B3 2.66 667 120W 50W x*

Clovertown 4 coreDualXeon

X5355 SL9YM B3 2.66 667 120W 50W x*

Clovertown 4 coreDualXeon

X5355 SLAEG G0 2.66 667 120W 25W x*

Clovertown 4 coreDualXeon

E5345 SL9YL B3 2.33 667 80W n/a x*

Clovertown 4 coreDualXeon

E5345 SLAC5 B3 2.33 667 80W n/a x*

Clovertown 4 coreDualXeon

E5345 SLAEJ G0 2.33 667 80W n/a x*

Clovertown 4 coreDualXeon

E5340 SL9MY n/a 2.4 533 80W 30W x*

Clovertown 4 coreDualXeon

E5340 n/a G0 2.4 667 80W 25W x*

Clovertown 4 coreDualXeon

L5335 SLAEN G0 2.0 667 50W 24W x*

Clovertown 4 coreDualXeon

L5320 SLA4Q B3 1.86 533 50W 24W x*

Clovertown 4 coreDualXeon

L5320 SLAC9 B3 1.86 533 50W 24W x*

Clovertown 4 coreDualXeon

L5320 SLAEP G0 1.86 533 50W 24W x*

Clovertown 4 coreDualXeon

E5320 SL9MV B3 1.86 533 80W 30W x*

Clovertown 4 coreDualXeon

E5320 SLACB B3 1.86 533 80W 30W x*

Clovertown 4 core DualXeon

E5320 SLAEM G0 1.86 533 80W 30W x*

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Woodcrest 2 core DualXeon

5160 SL9RT B2 3.0 667 80W n/a x

Woodcrest 2 coreDualXeon

5160 SLABS B2 3.0 667 80W n/a x

Woodcrest 2 coreDualXeon

5160 SLAG9 G0 3.0 667 65W 8W x

Woodcrest 2 coreDualXeon

5150 SL9RU B2 2.66 667 65W 24W x

Woodcrest 2 coreDualXeon

5150 SLABM B2 2.66 667 65W 24W x

Woodcrest 2 coreDualXeon

5150 SLAGA G0 2.66 667 65W 8W x

Woodcrest 2 coreDualXeon

5130 SL9RX B2 2.0 667 65W 27W x

Woodcrest 2 coreDualXeon

5130 SLABP B2 2.0 667 65W 27W x

Woodcrest 2 coreDualXeon

5130 SLAGC G0 2.0 667 65W 27W x

* 1,1 to 2,1 firmware upgrade recommended for stepping G0,_strongly_ recommended for earlier steppings.** Values per CPU (-> x2 in a MP). Upgrade from DualCore toQuadCore CPU's usually requires fan control adjustments prior tostepping G0.

Sources used (among others): Techreport.com, Wikipedia.

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Credit

Thanks to Bokkow for helping with this. The information is formatted andpresented nicely due to his work with BBCode tables, and he hascontributed with a lot of the data as well.Thanks to MacEFIROM and Netkas for creating and providing thefirmware updates for Mac Pro. This has enabled countless people toupgrade to a newer generation of CPUs, which wouldn't be possiblewithout the effort made by these two.Thanks to everyone who ever upgraded a CPU and took the time to postabout it here--there's a chance it was your post I saw that led to a CPUbeing verified above.Thanks to those who took the time, money, and risk to shove morememory in their computer than others said was possible.Thanks to everyone who helps to push the limits and usefulness of ourcomputers.Thanks to MacRumors and the mods for providing such a great forum forthe above to happen in the first place. Especially the mod Arn, forenabling BBCode tables for this.

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' aaronraimist, thefredelement, Macschrauber and 29 others likethis.

Feb 5, 2016

ActionableMango said: ↑

Thanks - this is a great resource. I wish there had been one wiki post with allthis info in one place when I was doing my own research.

One small point I would make is that there can be minor differences betweenan X-class CPU and its W-class equivalent that aren't covered here. Forinstance, the high temp tolerance of the X5690 is slightly higher than that ofthe W3690, which might be one reason to look at the X5690 a little moreclosely even for a single-CPU 4,1 or 5,1.

#2

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' JamesPDX likes this.

Feb 5, 2016

Great work! Might I suggest that you also include the TDP for each processoras you had on the table to posted on another thread? I am not sure whetherit's ever a consideration when upgrading but it would be a nice to have forcompleteness.

#3

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' ActionableMango and m4v3r1ck like this.

Last edited: ! Feb 6, 2016 Feb 5, 2016

#4

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flehmanmacrumors regular

" Feb 21, 2015

Bokkow and I have created a Mac Pro CPU compatibility list. The intent is tocover all relevant and compatible CPU upgrades for all Mac Pros. These areasked about over and over and over again, so I thought it would be nice to haveit all in one place.

Right now it is an early draft. Sorry about the formatting--the "tabs" were lostwhen I inserted this into MacRumors, so the columns don't line up correctly.Bokkow is working to see if the formatting can be improved.

Constructive criticism, corrections to errors, pointing out omissions, etc. are allwelcome. My intent is, after the content matures, to turn this first post into a

Click to expand...

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nigelbbmacrumors 6502a

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nigelbb said: ↑

Thanks Nigelbb I will put this in the table as well, I agree with you that TDPcan be a consideration when upgrading.

#4

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Feb 6, 2016

ActionableMango said: ↑

--- Post Merged, Feb 6, 2016 ---

Great work.You can add to Mac Pro 5,1 dual CPU:W5590 3.33GHz I have a pair working well here

#5

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' JamesPDX and ActionableMango like this.

Feb 6, 2016

ActionableMango said: ↑

And yet another GREAT resource, thanks guys!!!

#6

bokkowmacrumors regular

" May 3, 2012

+ The Netherlands

Great work! Might I suggest that you also include the TDP for each processor asyou had on the table to posted on another thread? I am not sure whether it'sever a consideration when upgrading but it would be a nice to have forcompleteness.

* SHARE

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ibarnettmacrumors regular

" Aug 20, 2010

+ Gold Coast, Australia

Bokkow and I have created a Mac Pro CPU compatibility list. The intent is tocover all relevant and compatible CPU upgrades for all Mac Pros. These areasked about over and over and over again, so I thought it would be nice to haveit all in one place.

Right now it is an early draft. Sorry about the formatting--the "tabs" were lostwhen I inserted this into MacRumors, so the columns don't line up correctly.Bokkow is working to see if the formatting can be improved.

Constructive criticism, corrections to errors, pointing out omissions, etc. are allwelcome. My intent is, after the content matures, to turn this first post into a

Click to expand...

* SHARE

!

m4v3r1ckmacrumors 68020

Bokkow and I have created a Mac Pro CPU compatibility list. The intent is tocover all relevant and compatible CPU upgrades for all Mac Pros. These areasked about over and over and over again, so I thought it would be nice to haveit all in one place.

6/13/17, 9:05 AMMac Pro CPU Compatibility List | MacRumors Forums

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Cheers

--- Post Merged, Feb 6, 2016 ---

nigelbb said: ↑

Good additional info's!

Cheers

' ( + ) REPLY

Feb 6, 2016

I have a whole Excel spreadsheet with separate tabs and even Xserve modelsincluded but there is no way to put a table on this forum for now. Still figuringout what would be best to do. I have W5590 on the list as well, thanks for theconfirmation

#7

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Last edited: ! Feb 7, 2016 Feb 7, 2016

@arn was kind enough to implement table possibility in BBCode for MacRumorsright away So tables in the startpost will be up as soon as possible! (I'mhoping to finish up around the same time tomorrow)

#8

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' BillyBobBongo, ActionableMango and m4v3r1ck like this.

Feb 7, 2016

Bokkow has been doing a lot of work on this, to get it better organized and #9

" Nov 2, 2011

+ The Netherlands

Great work! Might I suggest that you also include the TDP for each processor asyou had on the table to posted on another thread? I am not sure whether it'sever a consideration when upgrading but it would be a nice to have forcompleteness.

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bokkowmacrumors regular

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bokkowmacrumors regular

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ActionableMango

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more presentable. I've seen a draft table and it looks great. As soon as he'sdone I'll get the first post updated.

' ( + ) REPLY

' BillyBobBongo and m4v3r1ck like this.

Feb 8, 2016

I think at least one of the forum members have X5687 running in their 5,1.I'm curious if X5698 will work in the 4,1 and 5,1s.

#10

' ( + ) REPLY

Feb 8, 2016

I can safely submit that the 1,1 and 2,1 are compatible with Xeon L5335 LowVoltage Quad Cores @ 2.0GHz, I run them in my 1,1 and my Xserve.

Also, the 1,1 -> 2,1 flash was NOT done on my machine, the processors areseen as Unknown, but work fine.

#11

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' ActionableMango likes this.

Feb 8, 2016

pastrychef said: ↑

Hey Pastrychef, would be great if it worked, fastest single core chips in the

#12

ActionableMangothread startermacrumors 604

" Sep 21, 2010

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pastrychefmacrumors 601

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NOTNlCEmacrumors 6502a

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bokkowmacrumors regular

I think at least one of the forum members have X5687 running in their 5,1.I'm curious if X5698 will work in the 4,1 and 5,1s.

6/13/17, 9:05 AMMac Pro CPU Compatibility List | MacRumors Forums

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family, however, 4.1 and 5.1 firmware do not recognize X5687 or X5698, ithas been confirmed quite a few times when you search the forum. If you finda user who has it up and running please let me know!

NOTNlCE said: ↑

Thanks! Will add this to the list! Great to know that some low voltage CPU'swork; for the persons who want to make their MP low in energy consumption.If other people have low voltage models (which are not on the chart yet):please come forward

' ( + ) REPLY

Feb 8, 2016

pastrychef said: ↑

I really wanted the X5698 to work, because that chip would probably be idealfor me. When they finally became affordable enough on Ebay, I looked into it.Many people have said it wouldn't work, but I still held out hope because theyhadn't actually tried so themselves.

But eventually I found the following post. The MP won't boot with it installed:http://forum.netkas.org/index.php/topic,852.msg11014.html#msg11014

#13

' ( + ) REPLY

Feb 8, 2016

bokkow said: ↑#14

" May 3, 2012

+ The NetherlandsI can safely submit that the 1,1 and 2,1 are compatible with Xeon L5335 LowVoltage Quad Cores @ 2.0GHz, I run them in my 1,1 and my Xserve.

Also, the 1,1 -> 2,1 flash was NOT done on my machine, the processors areseen as Unknown, but work fine.

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ActionableMangothread startermacrumors 604

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I'm curious if X5698 will work in the 4,1 and 5,1s.

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pastrychefmacrumors 601

Hey Pastrychef, would be great if it worked, fastest single core chips in thefamily, however, 4.1 and 5.1 firmware do not recognize X5687 or X5698, ithas been confirmed quite a few times when you search the forum. If you finda user who has it up and running please let me know!

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Oops. I just found the post and the guy was using X5677.

--- Post Merged, Feb 8, 2016 ---

ActionableMango said: ↑

Thanks for the info.

' ( + ) REPLY

Feb 8, 2016

I've updated the first post with Bokkow's formatting. It is much improved!He also added Xserve compatibility and TDP wattage information.

I've also removed the two processors that were likely compatible, but forwhich I could not find any verification (i7 980 and W3550). So the list is nowentirely processors where I could find verification somewhere.

#15

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' m4v3r1ck likes this.

Feb 8, 2016

ActionableMango said: ↑

Kudo's! Looking clean & mean...

Cheers

#16

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' bokkow likes this.

" Sep 15, 2006

+ New York City, NYI really wanted the X5698 to work, because that chip would probably be idealfor me. When they finally became affordable enough on Ebay, I looked into it.Many people have said it wouldn't work, but I still held out hope because theyhadn't actually tried so themselves.

But eventually I found the following post. The MP won't boot with it installed:http://forum.netkas.org/index.php/topic,852.msg11014.html#msg11014

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ActionableMangothread startermacrumors 604

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m4v3r1ckmacrumors 68020

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+ The Netherlands

I've updated the first post with Bokkow's formatting. It is much improved! Healso added Xserve compatibility and TDP wattage information.

I've also removed the two processors that were likely compatible, but forwhich I could not find any verification (i7 980 and W3550). So the list is nowentirely processors where I could find verification somewhere.

* SHARE

6/13/17, 9:05 AMMac Pro CPU Compatibility List | MacRumors Forums

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Feb 8, 2016

Happy to contribute! And again, special thanks to @arn for adding tablefunctionality to MacRumors almost instantly after request.

By the way, any suggestions/additions are welcome so that we can make thelist as complete as possible! It's a list for and by the community

#17

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' BillyBobBongo and m4v3r1ck like this.

Feb 8, 2016

Great Work @ActionableMango and @bokkow on this resource. I've sharedthis thread to some of my clients who plan to upgrade their cMac Pros CPUsin their studios. Their cMac Pros are still running fine helping them bringing inincomes.

#18

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Feb 8, 2016

Suggest adding some notes about the RAM types and requirements:

DDR2 for 1,1 through 3,1 (with perhaps an additional note re: heatsinks)DDR3 for for 4,1 through 6,1Can't mix Registered and UnregisteredECC vs non-ECC

etc.

Also, the XServe3,1 uses lidless processors, like the dual MacPro4,1.

#19

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Feb 8, 2016

scott.n said: ↑#20

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This is a good idea. Also: When 3 (or 6) sticks is betterWhen 4 (or 8) sticks is betterHeatsink requirements in a 1,1/2,1How to tell if you need more RAM or if it won't help at allValid configurations (pairs are required in 1,1 and 2,1 for example)

It's added to the to-do list, but I'm a bit busy right now with just the CPUupdates.

scott.n said: ↑

Just the dual-CPU versions, or also the single-CPU version?

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Feb 8, 2016

I can confirm a E5 2696 v2 @ 2.5ghz working in a nMP #21

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Feb 8, 2016

ActionableMango said: ↑#22

macrumors 604

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Suggest adding some notes about the RAM types and requirements:

DDR2 for 1,1 through 3,1 (with perhaps an additional note re: heatsinks)DDR3 for for 4,1 through 6,1Can't mix Registered and UnregisteredECC vs non-ECC

Also, the XServe3,1 uses lidless processors, like the dual MacPro4,1.

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This is a good idea. Also:When 3 (or 6) sticks is betterWhen 4 (or 8) sticks is betterHeatsink requirements in a 1,1/2,1How to tell if you need more RAM or if it won't help at allValid configurations (pairs are required in 1,1 and 2,1 for example)

It's added to the to-do list, but I'm a bit busy right now with just the CPU

6/13/17, 9:05 AMMac Pro CPU Compatibility List | MacRumors Forums

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Quite a lot of info for side notes, maybe additional (small) tables wouldprovide overview. Going to experiment a bit with that idea perhaps tomorrow,I am a bit busy at work in the coming days.

How to tell if you need more ram can be captured in a general side-note,applicable for any machine running OSX

ActionableMango said: ↑

Both, just checked. Not sure if you can do with adding washers and 'normal'CPU's

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Last edited: ! Feb 9, 2016 Feb 8, 2016

I updated the list with recent comments, to sort the fastest processors at thetop, and to add additional, verified processors:

E5 2696 v2E5320L5320E5340 (Weird processor... I couldn't find it in Intel ARK, but there areplenty of other resources that mention it)

If you posted here or PM'd me with a verified processor not on the list, thankyou for verifying and letting me know.

bokkow said: ↑

It may be enough information to warrant its own separate thread.

#23

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Feb 9, 2016

A note on those L5335s - they run fine WITHOUT a flash in the 1,1 notnecessarily required. Also, they run great in my Xserve 1,1 - simply seen as

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updates.

Just the dual-CPU versions, or also the single-CPU version?

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Quite a lot of info for side notes, maybe additional (small) tables wouldprovide overview. Going to experiment a bit with that idea perhaps tomorrow,I am a bit busy at work in the coming days.

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Unknown, but spot on performance.

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NOTNlCE said: ↑

Okay, I've changed "required" to "recommended" and added the Xserve.

I do have a concern about it when I was researching 1,1 CPU upgrades toClovertown processors. Some people reported they worked fine (other thanthe "unknown" label). Others reported they worked fine most of the time, butunfortunately had occasional kernel panics--and then when the firmwareupdate came out and they updated, the kernel panics went away. There weremultiple reports of these KPs that went away with the firmware update, so Ihesitate to indicate that they work 100% without it.

#25

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Thread Status: The first post in this thread is a WikiPost, and can be edited by anyone with the appropriate permissions.

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A note on those L5335s - they run fine WITHOUT a flash in the 1,1 notnecessarily required. Also, they run great in my Xserve 1,1 - simply seen asUnknown, but spot on performance.

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