Need info on CPU's


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Message boards : Number crunching : Need info on CPU's

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Profile Floyd
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Message 1138504 - Posted: 10 Aug 2011, 19:10:48 UTC

I am trying to upgrade my AMD 255 Duel core 3.1 Ghx Cpu , to a Amd 929 quad core CPU.

AMD Phenom II X4 925 Quad Core Processor OEM Manufacturer: AMD


CPU Type: Desktop


Processor Interface: Socket AM3


Processor Class: Phenom II


Processor Speed: II X4 925 / 2.08GHz


Cores: Quad


L2 Cache: 2 MB


L3 Cache: 6MB


Bus Speed: 2000MHz (4000 MT/s)


Fan: Not Included


Wattage: 95W


Additional Technologies: Cool'n'Quiet
AMD Virtualization
HyperTransport 3.0


Unlocked Multiplier: No


Can anyone tell me if this CPU is a Good one for CUDA and opencl for Crunching ?

MY MB will only support a 95W cpu... I can't find a 6 core 95 watt cpu anywhere...
Thanks !

OzzFan
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Message 1138512 - Posted: 10 Aug 2011, 19:14:32 UTC - in response to Message 1138504.

Can anyone tell me if this CPU is a Good one for CUDA and opencl for Crunching ?


No, in fact no CPU is good for CUDA and OpenCL. CUDA is nVidia exclusive and OpenCL is for video cards in general. Both technologies have nothing to do with the CPU.

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Message 1138543 - Posted: 10 Aug 2011, 20:11:12 UTC

I think this is the one you are looking for:
1065T 2.9 GHz socket AM3 95W 45nm SOI

(Hex core Phenom)


As others have said OpenCL and CUDA are GPU specific and do not work on the CPU.
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Message 1138580 - Posted: 10 Aug 2011, 21:12:15 UTC - in response to Message 1138512.

OpenCL is for video cards in general. Both technologies have nothing to do with the CPU.

OpenCL, or Open Computing Language, can use all kinds of modern processors found in personal computers, servers and handheld/embedded devices, ranging from CPUs to GPUs to any other hardware capable of doing intricate calculations, like co-processors.

At this moment it's mostly used to work with GPUs, but that doesn't mean that it is for GPUs only.
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Message 1138590 - Posted: 10 Aug 2011, 21:22:19 UTC

@Floyds: I don't think anyone has shown one CPU to be more helpful than another to the GPUs computing if that was your question. Some have found if it good to leave one core or thread idle to "feed" the GPU on heavy duty crunchers. So more cores the better I reckon.
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Message 1139488 - Posted: 12 Aug 2011, 17:39:20 UTC

From my bit of browsing it seems only the quad core or fewer AMDs are within the 95W limit of your motherboard. You should also check which processors the BIOS supports.

To be honest you'll see better SETI number crunching gains from adding in a reasonable graphics card than aiming for more CPU cores. My quad core intel CPU had a RAC of 1,000 and then when I put in a GTX 260 graphics card it climbed to over 8,000. Maybe also consider what else you use the computer for.
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Message 1139716 - Posted: 13 Aug 2011, 3:45:23 UTC - in response to Message 1138504.

... MY MB will only support a 95W cpu... I can't find a 6 core 95 watt cpu anywhere...
Thanks !

If you're still interested take a look at this one.
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103856&nm_mc=EMC-IGNEFL081211&cm_mmc=EMC-IGNEFL081211-_-EMC-081211-Index-_-ProcessorsDesktops-_-19103856-L01B

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Message 1140034 - Posted: 13 Aug 2011, 11:30:20 UTC

The AMD cpu specs page lists three X6's that have 95W rating

Comparisons The 1065T has top temp of 62C only

Message boards : Number crunching : Need info on CPU's

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