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firewire9000

macrumors 6502a
Original poster
Sep 15, 2015
513
817
Hi,

I'm planning to buy a Mac Pro 4,1 with 2x2,26 Ghz quad core E5520, flash to 5,1 and change CPUs to 2x2,93 Ghz six core X5670 and put 4x8 GB 1066 Mhz ECC. There will be any problem? Massive update :D

Thanks!
 

joot

macrumors regular
Nov 3, 2006
110
21
Take your time...after firmware update, your rams will run @ 1333mHz
 

h9826790

macrumors P6
Apr 3, 2014
15,663
7,864
Hong Kong
I will say this is a very "standard" update now, nothing special, all you need to know is the dual processor 4,1 use lidless CPU. So you either de-lid the CPU, or study the work around before you start to do anything.
 

firewire9000

macrumors 6502a
Original poster
Sep 15, 2015
513
817
I will say this is a very "standard" update now, nothing special, all you need to know is the dual processor 4,1 use lidless CPU. So you either de-lid the CPU, or study the work around before you start to do anything.

Damn, true. So it will not work with stock heatsink without any modification? I have to remove IHS?
 

flowrider

macrumors 604
Nov 23, 2012
7,019
2,779
Many, Many, Many threads on this forum discussing this very subject. And as pastrychef said, there is more than one way to skin this cat. Do a search and educate yourself on the two methods and what's required for this update.

Lou
 
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ActionableMango

macrumors G3
Sep 21, 2010
9,610
6,895
There are three methods:
  • Remove the lids (paid service or DIY)
  • Be very careful with tightening the heat sink, and adjust tightness to deal with CPU/memory faults
  • Add washers
The CPU upgrade thread in my signature has notes and links to other threads where they go over these methods in detail.
 
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