I would love to know what is going on, and why my dedicated PhysX GPU is getting some processing action.
Makes me wonder where those calculations would be done if I wasn’t running a PhysX processor with Sandra?
I am starting to think this is the answer:
It just doesn’t sit right with me having Stream report so much higher on the graph, especially when testing a 295 on CUDA, utilization will be: 1/2 of my 295 runs at 99%, and the other 1/2 has intermittent processing issues causing GPU-z to report 0% load, with varied light utilization on my dedicated PhysX processor.
I just get the feeling we are flying on 1 wing.
UPDATE: Another member of EVGA’s board ran the same tests as me in Sandra, running a single 295 with no dedicated PhysX processor.
Thanks for the post freakysqeeky!
So for you…
OpenCL test: Both sides of you 295 were used with about 50% utilization.
CUDA test: 100% utilization on both sides of your 295.
Compute shadet test: 0% on one 1/2, and 100% utilization on your second.
And I was…
OpenCL test: 58% on 1/2 of my 295, and 19% on the other 1/2, with 20% load on the 280.
CUDA test: 1/2 of my 295 runs at 99%, and the other has intermittent processing issues causing GPU-z to not report it correctly, with varied light utilization on the 280.
Compute Shader test: 1/2 of my 295 runs at 99%, and the other at 0%, with mostly heavy usage on the 280.
Looks like to me…
With OpenCL: We both had one GPU at about 50%, and my other 50% is being split between the second 1/2 of my 295, and 280 dedicated PhysX processor (@ 19% and 20% utilization). (Your other 50% was all on the second 1/2 of your 295)
With CUDA: We both had high utilization on both sides of our 295’s, but 1/2 of my 295 had intermittent processing issues causing GPU-z to not report it correctly, and some light work going to my 280. I wonder if the work that isn’t being done on the intermittent processing side of my 295, was being routed to my 280? That might be why I think the second 1/2 of my 295 isn’t processing 100% of the time in this test.
On the Compute Shader test: We matched up with our 295’s only using 1/2 of the GPU, but I still have some heavy processing going on with my 280.
Final conclusion: Driver issue?