The same could be said about you and your 1 card. This is big boy land. Play hard. Do your best with your 1 card. A 7950 should be mining at 715kh.
I have never heard of a 7950 get 715khash. Most I have heard of is 650, and I can get up to 642 on my 7950, and maybe the occasional little uprising. Can you show a reference getting 715?
That was taken a few days ago. Same system is still running with 0 issues. Now imagine racks of them.
ASRock 970 EX4, Sempron 145, 2GB ram
Seasonic 850
MSI 7950's
BAMT 1.3, cgminer 3.7.3, Modified scrypt kernel
Engine: 1145
Memory: 1500
Power/Intensity: 20
Each card pulls around 240w.
Here's a screenshot I just took of my 2x Asus 280x TOP cards (same as your 7950's), undervolted and underclocked. This is their 24x7 rate (however they're in my main PC so not quite as well cooled), not just a momentary snapshot as you can see. I spent a LOT of time tweaking the max out of these. I also run a modified SCRIPT.cl & modified .bat files for increased performance.
https://dl.dropboxusercontent.com/u/4622142/280x%20Rates.pngThese cards are pretty good, but they don't hold a candle to my 2nd rig that powers 3x Sapphire TRI-OC 290's @ a steady 2700KH/s (890-906KH/s each!) With my other 2 rigs included I run 5MH/s but man some guys running warehouses of 200+MH/s make my systems look like child's play! lol. Can't wait to buy more with the IPO funds I purchased!
Eganwp
