I'm glad I didn't wait for the 6950

[Pooh]

I built my 5960 rig about 2 months ago and was really torn about taking the leap or waiting.

I was lucky and got a good deal on the chip which pushed me over the edge.

It sits at 4.5 running on 1.25v and 64Gb of DDR4-2400 clocked at 2666 on 1.26v

The 6950s seem to struggle to get over 4.3, and the Price

I know the two extra cores would make a difference but never-the-less.

 

[Pooh]

last time I looked clocking a 5960 to 4.5 and ddr2400 to 2666 was overclocking

Apologies - Didn't realise you had to clock the nuts of everything to qualify.

 

[Pooh]

That's probably not IBT stable, you're only getting about 52% CPU usage with "Standard" memory.

You need to increase the memory usage to get 80%+ of peak GFLOPS.

Peak GFLOPS at that speed is 8*8*4.5 = 288 GFLOPS so your target is at least 230 GFLOPS, 260 better.

You might want to experiment with using 8 and 16 threads, the latter will get hotter. Also 10 loops is probably overkill.

I was running it with 16 threads. Interested to see what happened with 8 so I also set IBT on vey high and let it rip. Seems to be behaving OK