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Windows 7: Dell Precision add processsor

26 Jul 2009   #1

Windows 7 x64 RC
 
 
Dell Precision add processsor

Hello,

I am running Windows 7 RC 64bit on my Dell precision T5400. I presently have one quad-core xeon e5410 2.33ghz, but the motherboard is dual socket, so I can add in another processor.

I am looking at putting in a xeon e5440 2.83ghz, in addition to the existing e5410 2.33ghz.

My question is, do both processors have to be that same speed? is it possible to have a 2.33 and a 2.83 running together?


My System SpecsSystem Spec
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26 Jul 2009   #2

Win 8 Release candidate 8400
 
 

both cores have to be the same speed because the instructions are hyperthreaded (they are put into the first avail cpu) and if not the same speed they would take diff amts of time to complete. If your dell suports it you could also out 2x2.83 for speed or 2x2.33 for budget

Ken
My System SpecsSystem Spec
26 Jul 2009   #3

Windows 7 x64 RC
 
 

Hi Ken,

I had feared as much! If only money grew on trees...

Thanks for your help!

Caspar
My System SpecsSystem Spec
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15 Feb 2010   #4

Windows 7 x64 RC
 
 

Ok 6 months and I'm back.

I am now going to keep the existing E5410 2.33Ghz and add another identical processor.

What I need to know is what heat sink/fans etc do I need to add/change in my system in order to cope with the additional heat from the processor? I will be using it for rendering so I will be literally maxxing out the capacity of the processor.

Is anyone familiar enough with the Dell Precisions?

I asked Dell about it, and they 'your system was sold as a single processor system, therefore it can only ever be a single processor system' (even though it is dual-processor motherboard, with a nice big open processor slot!)... thanks for nothing Dell Support India!

My system specs:
Dell Precision T5400
Xeon E5410 Quad 2.33GHZ
Windows XP32 and Windows 7 64BIT RC

I'm not sure what other information I need to provide but please let me know and thanks in advance for the help.

Regards,

Caspar
My System SpecsSystem Spec
15 Feb 2010   #5

Windows 7 x64 RC
 
 

Update: just spoken to someone more helpful at Dell Support, who says that Dells official position is that it cant be done, but that it is possible, but means that due to the heat, the fan will have to work harder, fine! He also said that the same cooling is in place for the single processor systems as the double processor systems.

Onto my next question, I am looking at the processor to buy and have two identically priced, almost identical processors. One is called Active 1U, and the other Passive 2U, what does this mean? I have copied the details below... (sorry that its all big and crazy text)

uad-core Xeon Processor E5410 2.33 Ghz 1333mhz Fsb 12mb L2 Cache Lga771 2u Passive


Part Number: BX80574E5410P
SKU: 1355052
Stock Level: 3
Our Price: 183.54 (215.66 Inc VAT)

Quad-core Xeon Processor E5410 2.33 Ghz 1333mhz Fsb 12mb L2 Cache Lga771 Active Or 1u


Part Number: BX80574E5410A
SKU: 1355050
Stock Level: 1
Our Price: 183.54 (215.66 Inc VAT)





What does this mean?

Caspar
My System SpecsSystem Spec
15 Feb 2010   #6

Windows 7 Home Premium x64
 
 

Xeons are intended as server processors. This does not mean that they can't be used in a desktop (the company I work for has them in drafting PCs). The 1u and 2u are designators for chassis sizes for server racks. Active and passive reference the cooling type. It sounds like those come with a HS (and fan for the one listed as active). You may need to see if you can get a 3rd-party cooling solution as those ones intended for servers may not work in your system. Maybe go to Dell and buy a replacement HS to have the same one on both CPUs...
My System SpecsSystem Spec
16 Feb 2010   #7

Windows 7 x64 RC
 
 

Hi mlevy, thanks for your help.

The cooling in my system is heatsink on the processor (I will get the dell heatsink, designed for xeon and this case) and fan in the case (which is also designed to handle the heat of dual processors).

Would this be classified as active or passive cooling?

Thanks,

Caspar
My System SpecsSystem Spec
16 Feb 2010   #8

Windows 7 x64 RC
 
 

ps I think the processors I have posted above are just the processors only (ie not processor kit) which means I will buy the heatsink separately from dell. Hopefully this should work out cheaper, Dell's processor kit is 400, as compared with the above 200 for the processor (plus the heatsink bought separately).
My System SpecsSystem Spec
16 Feb 2010   #9

Windows 7 Home Premium x64
 
 

Given that they specify active or passive cooling, those are kits that come with the cooling solution, but those cooling solutions are designed for server chassis. The processors in the two packages are no different, the only difference in the kits is that one cooling solution has a fan mounted on it, the other relies on airflow in the chassis. Regardless of which one you buy you will still need to acquire a cooling solution as I don't think a cooling solution intended for a server will work in that machine. Looking at the service manual for that machine it's hard to tell if the server cooling solution will work in it, especially not knowing what the solution provided with the CPU is.
My System SpecsSystem Spec
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