Mac pro upgrade to 12 core 3.33Ghz

[qwarkas]

Hello!
I have 2 processor 6-core xeon 3.33GHz x5680,but while I do not have a dual-processor mac pro and unsure whether enough standard cooling, because the online Apple oficial model of cpu maximum is two 12 cores xeon x5670 2.93.
I am sure that the processors will work, but am not sure whether or not due to overheating CPU Throttling at full load all the cores, because the maximum-allowable temperature of the processor intel xeon ~ 70 degrees Celsius.

At temperatures above 70 C, to slow down the processor speed that could make it slower than the official x5670 2.93GHz, is this true? Throttling - temperature should significantly exceed 70 ° C, for example 80C - 90C and the standard cooling enough to eliminate Throttling for two xeon x5680 3.33Ghz?

How many of you on this forum has already established two processors x5680 in your mac pro?

There is a formal mac pro 6-core 1 cpu 3.33ghz, but cooling it more powerful. Why in 6-core model cooling more than in 12 core model?:



To put on a mac pro 4.1 is it necessary to remove the covers from the CPU?



Thank you so much!

 

[Neodym]

Not sure whether they would really throttle. The 5680 has a higher TDP or 130W (while the 5670 is rated at 95W). Thus there are an additional 70W that have to be "cooled away".

This should be no problem for the cooling system, however the fans may be louder than usual. If necessary, you can adjust the fans manually using smcFanControl to prevent the Xeons from reaching the throttling temperature.

I don't own a 4,1 myself, but the dual processor machines of that series indeed seems to have so-called "lidless" CPU's. So if you want to replace those yourself, you need to either remove the lid on the new processor or adjust the height of the heatsinks by using suitable distance washers etc.

Not necessarily easy, but it has been done and you should find reports on it on this forum.

 

[qwarkas]

I don't own a 4,1 myself, but the dual processor machines of that series indeed seems to have so-called "lidless" CPU's. So if you want to replace those yourself, you need to either remove the lid on the new processor or adjust the height of the heatsinks by using suitable distance washers etc.

Not necessarily easy, but it has been done and you should find reports on it on this forum.

Thanks.

How to install the dressed CPU instead of undressed CPU ?

I need for link about detailed faq install dressed cpu"s instead of undressed cpu"s to the mac pro 2009.

Firmware 5.1 is rolled back to firmware 4.1 in case of an unsuccessful procedure flash?
Thanks.

 

[Inconsequential]

Have you actually done this yet?

If not, the fans will run faster, but that is about as far as it goes.

Someone else has upgraded a 4,1 to two 4 core 3.33GHz 130W chips and that was fine, so there are no reasons what so ever that 12 cores @ 3.33ghz with 130W chips will have any issues either.

I.e. It will be fine, if noisy.

 

[qwarkas]

Have you actually done this yet?

Yes because i have two xeons x5680 and i have mac pro 2009 with 6-core i7 980x 3.33ghz. So I can swap my 6-core mac pro to another persons 8-core 2.26ghz mac pro 2009 no additional cost.

I have a buyer for my xeons 5680, if the exchange does not take place, but the buyer would also like to know exactly how to set up risk-free xeon"s 5680 in its mac pro 2009.

 

[qwarkas]

I do not fully understand for good installation a heatsink to the mac pro 2009.
For good upgrade I mast do not tighten until the end of the heatsink, or buy special screws to change the ride height of heatsink?
If I do not make the special prepare and full end to fix the heatsink on the xeon 5680 cpu"s, that I will brick the motherboard?:



http://www.anandtech.com/show/2800/upgrading-and-analyzing-apple-s-nehalem-mac-pro/11

I find the good link about this and I think that installation not problem.

Thanks.