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GTX 470 Folders, lend me your assistance

post #1 of 4
Thread Starter 
I've been wanting to return to folding, but so far my OCing attempts have been unsuccessful, unlike my old GTS 450's which just worked. As a BOINCer, i know that for different projects you need different GPU speeds, but i can't seem to nail the right OC speeds for my 470's. Even with SLI disabled i have no idea how high can i run them for F@H, considering i tend to run them @ 860-875 MHz core and 1000 MHz VRAM for BOINC. I cannot get F@H to run without errors od WU's taking abnormally long other than at stock speeds, and i definitely have not gone watercooling to fold at stock speeds biggrin.gif

If you have/had used a GTX 470, what were your core and memory speeds, and WU completion times?

I also have a question about VRAM speeds, i read somewhere it does matter for F@H in helping improve WU times, unlike BOINC where you can massively downclock it to keep a specific vcore and crank core/shader speeds. Is this true?
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post #2 of 4
Quote:
Originally Posted by Starbomba View Post

I've been wanting to return to folding, but so far my OCing attempts have been unsuccessful, unlike my old GTS 450's which just worked. As a BOINCer, i know that for different projects you need different GPU speeds, but i can't seem to nail the right OC speeds for my 470's. Even with SLI disabled i have no idea how high can i run them for F@H, considering i tend to run them @ 860-875 MHz core and 1000 MHz VRAM for BOINC. I cannot get F@H to run without errors od WU's taking abnormally long other than at stock speeds, and i definitely have not gone watercooling to fold at stock speeds biggrin.gif
If you have/had used a GTX 470, what were your core and memory speeds, and WU completion times?
I also have a question about VRAM speeds, i read somewhere it does matter for F@H in helping improve WU times, unlike BOINC where you can massively downclock it to keep a specific vcore and crank core/shader speeds. Is this true?

Keep the memory at stock and go from there. Core/shader work the same for F@H, but don't go crazy.
    
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post #3 of 4
Even with a modified bios, to allow over volting past the stock limit, and water cooling, my GTX470 isn't stable at higher than 825 MHz for folding the rather large Fermi work units currently in the mix.
It will pass gaming benchmarks, and Furmark burn in, at 900 MHz all day though.

My GTX560 Ti has been the only card I could significantly OC the memory on. My 470 would only tolerate a slight memory OC, and my 580 can't handle any memory OC at all.
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post #4 of 4
Thread Starter 
Quote:
Originally Posted by hertz9753 View Post

Keep the memory at stock and go from there. Core/shader work the same for F@H, but don't go crazy.

So the memory speeds do matter? The first thing i do for BOINC is lower the VRAM as low as it can go (but not too low else the desktop starts artifacting) then crank up core speed.
Quote:
Originally Posted by Caleal View Post

Even with a modified bios, to allow over volting past the stock limit, and water cooling, my GTX470 isn't stable at higher than 825 MHz for folding the rather large Fermi work units currently in the mix.
It will pass gaming benchmarks, and Furmark burn in, at 900 MHz all day though.
My GTX560 Ti has been the only card I could significantly OC the memory on. My 470 would only tolerate a slight memory OC, and my 580 can't handle any memory OC at all.

I've also modded the BIOS, and my 470 also tolerates only a slight increase in VRAM speed, from 1675 to 1850. It doesn't get far with core speeds tho, only to 890 MHz, even at max core voltage, but both can game and Furmark all day long.

I had noticed F@H is not heavier than BOINC (in fact i had a 5c temp decrease between them) but requires more precision. Maybe that's why it can't go as high? But thanks for the 825 MHz reference, will be trying it.
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