Forum > Windows
GPU crunching question
citroja:
There is some serious debate about using a GPU to crunch SETI. From what I understand there are works in progress to enable the nvidia 8800 cards to crunch....
I currently have a 7800GTX card (obsolete) in my machine and I was talking to someone about upgrading. They said that as long as I stick with a PCIe card I could just add any other nvidia card to the other PCIe slot (7300, 7600, 7900, 8800)does anyone know if this is true???
I was seriously considering adding another card and if I can I will go for the 8800 so that I can crunch with it. The only problem that i have thought of is that the 8800 is a directX 10 card and the 7800 is a directX 9 card.
if anyone has any thought please let me know.
[EDIT]
Here is the S@H forum posts about GPU crunching
http://setiathome.berkeley.edu/forum_thread.php?id=36242
[/EDIT]
-citroja
pepperammi:
From what I read you need a pretty heafty CPU to feed that 8800 and get the best out of it.
Also take note if your Powersupply can feed those monsters too and if you have room for a card that uses an exhaust that need an extra slot.
I'd love one myself but so expensive :'(
citroja:
--- Quote from: pepperammi on 22 Dec 2006, 08:43:54 pm ---From what I read you need a pretty heafty CPU to feed that 8800 and get the best out of it.
Also take note if your Powersupply can feed those monsters too and if you have room for a card that uses an exhaust that need an extra slot.
I'd love one myself but so expensive :'(
--- End quote ---
I have an AMD X2 4800+, 600W PSU, and a free place for exhaust (but it won't be needed with a liquid cooling unit). What is more important for me to figure out is if:
a) my 7800GTX will be able to crunch
b) my 7800GTX is compatible with any of the current nvidia PCIe card (haven't found anything online yet)
c) my 7800GTX will be compatible with the new DirectX 10 card (8800 and beyond)
but I suppose that this is all null and void until there is a proven GPU cruncher available. If anyone needs help testing (7800 series) let me know....
-citroja
citroja:
After some long research i found that as of right now you CANNOT mix and match SLI cards by type (i.e 7800GTX must be paired with another 7800GTX) it doesn't matter if one is overclocked or not. Theoretically (and with some patching) the same cards with different memory (256 vs. 512) can be paired to run at the lower settings but it is not recommended.
I have not found anything that said you can't have a 7800 and say a 7900 in the same system, from what I can tell they just can't be SLI configured (at least as of right now).
For more info this is from the nvidia site:
http://www.slizone.com/page/slizone_faq.html
For those of you with only a SINGLE (obsolete) GPU if you want a match look for it on ebay....especially with the new DirectX 10 cards coming...people (read as 'gamers') will begin to upgrade their rigs and dump the older cards.
-citroja
Devaster:
i have modified sah application to use GPU for FFT , power spectrum and chirping using BrookGPU. i think i may release this on next weekend....
Navigation
[0] Message Index
[#] Next page
Go to full version