- Joined
- Nov 9, 2011
- Messages
- 170
- Reaction score
- 2
- Points
- 18
- Location
- Yorba Linda USA
- Your Mac's Specs
- llci to Mac Pro "26 Kids" all named Mac
I have a 2009 Mac Pro 2.66 Quad Nehalem that I want to upgrade the CPU on. Has anyone done this?

I have a 2009 Mac Pro 2.66 Quad Nehalem that I want to upgrade the CPU on. Has anyone done this?![]()
It is possible...but expensive. The cpu's either need to be purchased brand new, or come from a faster Nehalem Mac Pro. There is no official cpu upgrade product for the Mac Pro...it's a DIY project only. Thus potentially risky if you do something incorrectly.
- Nick
Well I see a "2009 3.33 Core Xeon W5590", and a "2010 Nehalem 3.2 Core Xeon W3565" so If I get one of these chips then it should work without other mods?![]()
Ahem...have you seen the price on that 3.33ghz Xeon W5590?...$1579 bucks!!!:
Intel BX80602W5590 Xeon W5590 Four Core 3.33GHz... in stock at OWC
The Xeon W3565 is a much better price ($316.99):
Newegg.com - Intel Xeon W3565 Bloomfield 3.2GHz 8MB L3 Cache LGA 1366 130W Quad-Core Server Processor BX80601W3565
- Nick
Well, at that I'll just have to be happy with what I haveI don't think the W3565 3.2 will be a lot faster.:Blushing:
And be cautious about changing the CPUs if you go that way. Am writing a paper on Mac Pros and upgrading. The problem with the 4.1 is the CPU's Apple used are 2mm lower than other processors. As a result when you tighten down the heat sink the daughter card shatters. Apple used these CPU's on their own and they are not replaceable with Dell, HP etc without some work.
There is a work around using small washers to build the 2mm up, however then the fan cable is a little short and will not connect without replacing with a longer cord.
And be cautious about changing the CPUs if you go that way. Am writing a paper on Mac Pros and upgrading. The problem with the 4.1 is the CPU's Apple used are 2mm lower than other processors. As a result when you tighten down the heat sink the daughter card shatters. Apple used these CPU's on their own and they are not replaceable with Dell, HP etc without some work.
There is a work around using small washers to build the 2mm up, however then the fan cable is a little short and will not connect without replacing with a longer cord.
Yep FatherTime only from the same series. With earlier models one could use say Intel X5355 and X5365 CPU's as the identical units were used on Dell, HP etc. Not the 4.1 Apple went their own way. Your best upgrade path would be from the 2.66 Quad to 2.66 8 core, increase Geekbench test results from 8144 to just on 15,500.
At what costs however? OWC offer to upgrade to this for a mere $2,500.00!
OWC Processor Upgrade Program options for Apple Mac Pro 2010 currently equipped with Quad-Core or 6-Core Processor
So I may be able to swap the single W3520 for a X5550. My Nehalem has one processor. Where as the 8 Core has two processors, do you mean to just swap the one chip and almost double the speed?![]()
didn't the '09 MP have the fixed cage? and when you do the upgrade don't you need the '10 EFI flash?
I purchased two w3565 LG 1366 processors for my 8 core dual 2.26 GHz 2009 Mac Pro 4,1.
The install was easy but the machine would not boot up. I re-installed the two 2.26 original CPUs and the system returned to normal. Any idea why it didn't work on an 8 core system?
Is it because of the thicker CPUs than what was installed. Any papers on the washer or shims mentioned in this thread?
TIA
Auralwiz
It looks like they were successful with the x5570 CPU in the 8 core but I wonder why the w3565 wouldn't boot?
Michael