GPU mmory important?

Message boards : Number crunching : GPU mmory important?

Author	Message
Biggles Send message Joined: 20 Sep 08 Posts: 2 Credit: 354,917 RAC: 0 Level Scientific publications	Message 2486 - Posted: 20 Sep 2008 \| 2:49:16 UTC
	How much of a difference, if any, does the amount of memory on a GPU make? I ask because I'm wondering how cards compare, for instance the 8800 GT with 256 MB of memory versus the 512 MB cards. The GPU itself is the same, but does the memory impact crunching times at all?
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Biggles Send message Joined: 20 Sep 08 Posts: 2 Credit: 354,917 RAC: 0 Level Scientific publications	Message 2575 - Posted: 24 Sep 2008 \| 0:16:29 UTC
	So nobody knows the answer to this?
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K1atOdessa Send message Joined: 25 Feb 08 Posts: 249 Credit: 395,402,681 RAC: 1,594,520 Level Scientific publications	Message 2578 - Posted: 24 Sep 2008 \| 2:33:14 UTC - in response to Message 2486.
	How much of a difference, if any, does the amount of memory on a GPU make? I ask because I'm wondering how cards compare, for instance the 8800 GT with 256 MB of memory versus the 512 MB cards. The GPU itself is the same, but does the memory impact crunching times at all? I've heard/read that the shader clock speed makes the biggest difference -- so, the WU times between two 8800GT's (one with 512MB memory and another with 256MB memory) should be very similar. I'm no expert, just reiterating what I've heard. The extra memory will help with games, but not so much with GPUGrid (focusing on gpu and shaders).
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GDF Volunteer moderator Project administrator Project developer Project tester Volunteer developer Volunteer tester Project scientist Send message Joined: 14 Mar 07 Posts: 1957 Credit: 629,356 RAC: 0 Level Scientific publications	Message 2580 - Posted: 24 Sep 2008 \| 9:22:41 UTC - in response to Message 2578.
	How much of a difference, if any, does the amount of memory on a GPU make? I ask because I'm wondering how cards compare, for instance the 8800 GT with 256 MB of memory versus the 512 MB cards. The GPU itself is the same, but does the memory impact crunching times at all? I've heard/read that the shader clock speed makes the biggest difference -- so, the WU times between two 8800GT's (one with 512MB memory and another with 256MB memory) should be very similar. I'm no expert, just reiterating what I've heard. The extra memory will help with games, but not so much with GPUGrid (focusing on gpu and shaders). We suggest that you get 512MB. This will be fine for future gpugrid application which may require more memory. gdf
	ID: 2580 \| Rating: 0 \| rate: / Reply Quote

Message boards : Number crunching : GPU mmory important?

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