GPU's ATI vs NVIDIA

[Luc Gauthier]

Hi, For the past 5 days , i spend time to try to find out witch one is the best ..
Ati or NVIDIA for running GPU's?
Few questions here:
1=What is the maximum GPU's Boinc could recognize?
2=There is Some NVIDIA card that have around 400 Cuda's, what does it means?
3= And How many Cuda's for running a GPU?
4=Here the situation: I have an ATI Radeon Hd 3200 and Boinc use .05 of my cpu & 1 GPU (i use AMD phenom 4 cores) so my RAC is around 650 wu's.
But here is my problem there is a data cruncher having same cpu and os, and he use NVIDIA geforce Tx480 and is actual rac = 48,500 wu's , so i am far away to understand it ?
5= How many Wu's i can crunch at the same times using whatever GPU for maximize my RAC.
Thank' for your Help i hope a genious could answer!!!

[Bok]

Which project are you running this on?
Some of the projects are heavily optimized for particular classes of GPU's. You may be better off moving to a different project. I don't know that particular card but I think it's on the lower end of the GPU's whereas the Nvidia 480 is a very high end CUDA card.

BOINC will recognize most any high end cards, but I think the question is more which of the lower ones it recognizes.

Welcome to Free-DC !

[Luc Gauthier]

Nice to meet you BOK & Thank's for your quick reply !!! Understood what you said about Compatible Project and Cuda..
So if i use GeForce GTS 450 , per exemple...(192 Cuda cores) and using projects list for NVIDIA, how many wu's (beside my 4 cpu) will run at the same times?

[Bok]

The wu's are usually configured to use all available cores in parallel so it is only 1 wu at a time still on the GPU itself.

[Luc Gauthier]

Ok , so if i use like you mention ''Nvidia GeForce GTX480 ''(480Cuda's Cores)can you estimate roundly how many wu's per day could be done?.
An average will help me alot to decide if i add another pc or go for that card instead???
Thank's again

[LAURENU2]

I and Bigred work milkyway with GPU's
I have 10 Vid cards and Bigred has 15 -+
I have all ATI's and Bigred has a mix you can look at our output here

Bigred http://stats.free-dc.org/stats.php?p...=mil&name=1250

laurenu2 http://stats.free-dc.org/stats.php?p...j=mil&name=889

One ATI radon 5850 will do the work of 15 Quad cores @ 2.5 Ghz

Here you can get one for 219.00 http://www.microcenter.com/single_pr...uct_id=0320761
Good luck and