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Sorry I tried search and the answer fast enough without reading.

post #1 of 10
Thread Starter 
It has been a good while, (i7 930 and GTX 260-216s were top notch,) since I was in here. Are a 2500k and a 7950 useful? I would imagine the 2500k is good enough, but does the 7950 still ruin everything with the CPU folding?
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post #2 of 10
Both are very useful. The AMD card may not get all that many points but GPUs crank out the science. Just wait for the new core to come out. Lower CPU utilization and nvidia and much more PPD. wink.gif For the mean time it will still need 1 CPU core.
post #3 of 10
Thread Starter 
Quote:
Originally Posted by mmonnin View Post

Both are very useful. The AMD card may not get all that many points but GPUs crank out the science. Just wait for the new core to come out. Lower CPU utilization and nvidia and much more PPD. wink.gif For the mean time it will still need 1 CPU core.

Back then, even giving an AMD gpu a core would halve the CPU ppd and the GPU would not make up the difference. Is that still the case? (Reading as I am typing, it is cold in here and when I had all three boxes folding it was a sauna in here in winter with the heat off.) Decisions.
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post #4 of 10
Quote:
Originally Posted by dave12 View Post

Back then, even giving an AMD gpu a core would halve the CPU ppd and the GPU would not make up the difference. Is that still the case? (Reading as I am typing, it is cold in here and when I had all three boxes folding it was a sauna in here in winter with the heat off.) Decisions.

I believe that you should be able to make up the loss of 1 core with the AMD GPU. You will probably get 8-10K out of the 7950 (depending on overclock) and will likely only lose ~6k from taking the 2500k from SMP 4 to SMP 3. Other considerations are that as mmonnin mentioned we have reason to believe that the amount of 'work' or 'science' being done is currently undervalued according to the points AMD GPUs get (i.e. AMD GPUs are better for folding than their points would have you believe), but you should also know that you will be using much more power with the AMD GPU and SMP 3 compared to just running SMP4 and no AMD GPU.

Welcome back. smile.gif
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post #5 of 10
Thread Starter 
Quote:
Originally Posted by juano View Post

I believe that you should be able to make up the loss of 1 core with the AMD GPU. You will probably get 8-10K out of the 7950 (depending on overclock) and will likely only lose ~6k from taking the 2500k from SMP 4 to SMP 3. Other considerations are that as mmonnin mentioned we have reason to believe that the amount of 'work' or 'science' being done is currently undervalued according to the points AMD GPUs get (i.e. AMD GPUs are better for folding than their points would have you believe), but you should also know that you will be using much more power with the AMD GPU and SMP 3 compared to just running SMP4 and no AMD GPU.

Welcome back. smile.gif

Does SMP7 with a pair of GTX 460s still outperform an i7 by itself. I truly am trying to read up on what has changed but the damn site search is giving me 3 year old posts. Is there an up to date FAQ?
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post #6 of 10
Quote:
Originally Posted by dave12 View Post

Does SMP7 with a pair of GTX 460s still outperform an i7 by itself. I truly am trying to read up on what has changed but the damn site search is giving me 3 year old posts. Is there an up to date FAQ?

No, there isn't a whole lot that is up to date here.

Nvidia cards don't typically require any dedicated CPU resources to themselves, so that theoretical system would be best run at SMP 8 and two 460s. Nvidia GPUs still use a little bit of CPU resources to fold so there is a decrease in CPU PPD running NV GPUs versus running no GPUs at all, but it's usually small enough that it's not worth dedicating an entire thread to them, even for multiple NV GPUs.

Any other questions we can answer for you so you don't have to dig through old info? (This isn't meant to sound condescending, I honestly want to help you with any folding questions you have)
Edited by juano - 2/18/13 at 11:57pm
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post #7 of 10
GPU PPD Database:
http://foldingforum.org/viewtopic.php?f=14&t=22281

Leaving the SMP WU to run at full #CPU Cores gives worse PPD than lower the SMP3 by 1 when running an AMD core, but not by half. Unless you only have a dual core, then thats half. wink.gif
post #8 of 10
Oh look, it's Dave. Hi Dave! wheee.gif
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post #9 of 10
Thread Starter 
Quote:
Originally Posted by juano View Post

No, there isn't a whole lot that is up to date here.

Nvidia cards don't typically require any dedicated CPU resources to themselves, so that theoretical system would be best run at SMP 8 and two 460s. Nvidia GPUs still use a little bit of CPU resources to fold so there is a decrease in CPU PPD running NV GPUs versus running no GPUs at all, but it's usually small enough that it's not worth dedicating an entire thread to them, even for multiple NV GPUs.

Any other questions we can answer for you so you don't have to dig through old info? (This isn't meant to sound condescending, I honestly want to help you with any folding questions you have)

Appreciate the offer. I am slowly working through what has changed. I was just hoping to get a jump on what was conventional wisdom when I was active and what has changed. I think everything is coming together.

Quote:
Originally Posted by zodac View Post

Oh look, it's Dave. Hi Dave! wheee.gif

Hello. This is all your fault. If you wouldn't have been such a help all those years ago I wouldn't be in this mess again. tongue.gif
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post #10 of 10
Quote:
Originally Posted by dave12 View Post

Appreciate the offer. I am slowly working through what has changed. I was just hoping to get a jump on what was conventional wisdom when I was active and what has changed. I think everything is coming together.
Hello. This is all your fault. If you wouldn't have been such a help all those years ago I wouldn't be in this mess again. tongue.gif

zodac also quit and left us all in the lurch. Just saying you know in case you'd like more things to blame her about. Not that I blame her or anything.
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