Using the bandwidth test in the SDK our K10’s are showing less than have the host to/from device transfer rates as the 670 in my desktop. It’s variable because of other processes on the shared server but I’ve never seen numbers higher than about 3GB/s whereas the 670 clocks in at about 8GB/s consistently (but I control what’s running on that system).
The server has 32 Cores hyper threaded Intel® Xeon® CPU E5-4650 0 @ 2.70GHz, while the desktop has 4 core hyper threaded Intel® Core™ i7-3770K CPU @ 3.50GHz. Both have PCIe 2 buss with (I think) 16x slots and 1600Mhz RAM.
My question is are these the kind of transfer rates we should expect from the K10 or do we have some sort of configuration problem on the server. BIOS upgrades were done yesterday (for a different reason) with no effect.
Also the server has 2 cards on 2 busses controlled by different cpu chips with the same numbers.
Our computations are of course very dependent on host to device bandwidth.
If this is normal fine.