Originally Posted by
Andreas
Folks here might be interested in the GTX 780 as folding card.
Finally I had been able to pick up my GTX 780 (the stock clock version, not the OC).
To better compare the total system impact, I took two :)
I have 2 identical systems with two AMD 7970s each.
CPU is a Celeron G1610, sufficiently powerful to drive the 2 GPU cards but it doesn't do any folding. With 2 cards at 1150/1600MHz, each system can produce 200k PPD of WU 7663. Power consumption is 380 watt at the plug.
I took one system and replaced the 2 AMD cards with 2 GTX 780 cards - the rest of the system was kept unchanged.
Currently the first WU is running:
With stock settings, TPF is 1min22sec (111k PPD per GPU)
Power consumption is 405 watt. The difference comes mostly from the Celeron CPU, as the NVidia driver keeps the CPU running at 100%. The ATI driver is much better (CPU is at 18% plus running at reduced clock)
Changing the settings to 1175 MHz (+180MHz for the shader), +160 MHZ for memory, and TDP to 104%.
TPFs seem to settle in the 1min9sec range with this WU. Two GTX 780 are then producing 288k PPD. Power consumption is 430 watt
With the fan set to 90% (There is a difference in the available settings to the Titan which is limited to 85%), temperature of GPU-0 is 58 degrees Celcius and GPU-1 is 50 degrees. A 200mm fan in the side panel is getting ambient air (currently 20 degrees) to the GPUs.
Comparing it with the GTX Titans (1090 MHz, +100 MHz memory, 104% TDP):
2 GPUs are constantly between 300 and 310k PPD (TPF between 1:05 and 1:06)
Andy