In a word - NO! The only cMP that came with CPUs with no lids was the dual CPU 4,1 (2009) the Single CPU 4,1 (2009) came with lidded CPUs as well as the 5,1 (2010 & 2012).
Lou
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4.1 Dual CPU Delid? or Leave the lid down?
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In a word - NO! The only cMP that came with CPUs with no lids was the dual CPU 4,1 (2009) the Single CPU 4,1 (2009) came with lidded CPUs as well as the 5,1 (2010 & 2012).
Lou
if anyone wants to do the dual 4,1 CPU upgrade but doesn't want to de-lid themselves, I've used this guy to great results,
http://www.ebay.com/itm/172233276733
http://www.ebay.com/itm/172233276733
I just did what Daze513 said and it went quite smoothly but only on my 2nd attempt.
No delidding - use the CPU as is
No cutting of tabs from the fan connector (no detachment from the heatsink).
No washer
Use a 5mm thick thermal paste
The first attempt was a flop because the fan connector did not make contact to the fan power socket on the board.
This is because I left black plastic square that encases the original delidded CPU on. The legs that stick out from the plastic square creates the gap (increased height on top of the 2mm lid thickness) and thus prevent the fan connector from making contact with the power socket on the board.
On my 2nd attempt, the black plastic square was removed. I tightened the heatsink by feel (of tightness) as I could not exactly count the number of turns when I loosened the heatsink earlier (there is no click sound!).
I followed the 1/4 turn rule as advised by others. It turned out for me that both CPU and RAM were detected smoothly.
I saw the link for this de-lidding Youtube video on Netkas, gives a really good detailed description (not that I've tried it yet!) especially for the 2009:
Post Mac Pro 2009 models have lidded CPUs. Pop up your heatsink and you'll have confirmation.
How many people does it take to answer the same question? As many as it takes to change a light bulb?
Lou
To be equally pedantic my answer is correct but incomplete so let me complete it & provide information rather than merely scoring points. Only 2009 Mac Pro 4,1 DUAL CPU systems need delidding. Single CPU systems do not need delidding.
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All Mac Pro classics manufactured from 2010 and later use a standard (lidded) Xeon cpu. you lucky guy!
I recommend you delid the CPU for the Mac Pro 4,1. If you leave the lid on there will be a small heir difference, about 2mm. This can be compensated by adding o-rings and adding a thicker layer of thermal padding. This, however, is no guarantee that the CPU fans will mount properly. You might get a situation where the fans will be on constant full blast and you need a piece of extra software to slof the fans down and manage them from there.
As for the method of delidding, that is up to you. I personally delidded 2 Xeon X5690's with nothing but a vice.
As for the method of delidding, that is up to you. I personally delidded 2 Xeon X5690's with nothing but a vice.
Interesting vice method, at least you don't risk cutting the capacitors like with the razor and heat method.
Hi all, I know this might strictly be the right thread...but I'm hoping someone can at least point me in the right direction.
I have a MacPro 4,1 which I have upgraded to 5,1 (I believe successfully, it shows 5,1 in the system profiler.) I bought two x5680s on ebay, and tested them in a friends PC. Both worked. I then very carefully delidded them with a depth marked razor, and gentle use of heatgun. No cut caps, no overheated die.
However, when I put them in my CPU tray, I get no post. No boing, nothing. Machine turns on with power button, HDs spin up, DVD drive initializes...no error lights on CPU tray...but no boot.
I have swapped CPUs between slots, I have tried CPUs one at a time in A, I tried another x5680 that I have which has clearly cut caps, and it causes red error lights on the tray. I put my original quad 2.26s back in, and it boots right up.
What should I try, or who/where should I ask of assistance?
I have a MacPro 4,1 which I have upgraded to 5,1 (I believe successfully, it shows 5,1 in the system profiler.) I bought two x5680s on ebay, and tested them in a friends PC. Both worked. I then very carefully delidded them with a depth marked razor, and gentle use of heatgun. No cut caps, no overheated die.
However, when I put them in my CPU tray, I get no post. No boing, nothing. Machine turns on with power button, HDs spin up, DVD drive initializes...no error lights on CPU tray...but no boot.
I have swapped CPUs between slots, I have tried CPUs one at a time in A, I tried another x5680 that I have which has clearly cut caps, and it causes red error lights on the tray. I put my original quad 2.26s back in, and it boots right up.
What should I try, or who/where should I ask of assistance?
At least test them one by one, the computer can boot with only CPU A installed (at max fan speed)
As I indicated in OP, I have tried them one at a time in CPU A slot. Same behavior. Fans don't go to full speed either.
Also, delidding wasn't.....tricky...in any way. I think moving the fan connector, adding spacers and precision tightening a CPU with an IHS is much more tricky. I don't believe I have killed either/both CPUs, because when I test with a known dead x5680, it behaves much differently. Error lights, fans at full speed etc.
Also, delidding wasn't.....tricky...in any way. I think moving the fan connector, adding spacers and precision tightening a CPU with an IHS is much more tricky. I don't believe I have killed either/both CPUs, because when I test with a known dead x5680, it behaves much differently. Error lights, fans at full speed etc.
Sorry, I missed that part. May be you can go to your's friends home and test the CPU again. I assume put some thermal paste between the lid and the CPU, it should be good enough to fit in a normal PC for checking if the CPU still work properly, no need to stress it if you worry about the cooling.
Oh, good thought with just setting the lid back on with thermal paste. I hadn't re-tested yet as I knew my friends PC heatsink wouldn't make contact without the lid.
I still really can't believe that the CPUs would be dead....since a known dead CPU behaves much differently, (lights on the tray and on the diagnostic LEDs up front.) With these CPUs...it just behaves like it can't talk to them. I'm wondering if somehow my 4,1->5,1 firmware update didn't work...even though it claims 5,1 in profiler....
I still really can't believe that the CPUs would be dead....since a known dead CPU behaves much differently, (lights on the tray and on the diagnostic LEDs up front.) With these CPUs...it just behaves like it can't talk to them. I'm wondering if somehow my 4,1->5,1 firmware update didn't work...even though it claims 5,1 in profiler....
If the system info said it's a 5,1, the firmware upgrade should be success. And the system info should also shows
Boot ROM Version: MP51.007F.B03
Anyway, a damaged CPU may act differently than a known dead CPU.