7950 = 112 SPUs instead of 128 on 7970. That's not a huge difference, especially if your card can overclock back to 7970 speeds. Likely the die design is 128, and ones that have failed core yields become 7950.
Overclocking (without increasing voltage) is a linear increase in hashes at the same hashes/J, but the overhead of CPU, motherboard, HDD remains the same, and the whole system becomes *more* efficient.
Overclocking (without increasing voltage) is a linear increase in hashes at the same hashes/J, but the overhead of CPU, motherboard, HDD remains the same, and the whole system becomes *more* efficient.
It is 12% less and at 14% lower clock. Saying you can overclock back to 7970 STOCK sppeds is kinda silly. Because you can overclock 7970 another 20%+ beyond that.
Now MH/$ it is much better because it is ~25% less STOCK performance however it is 40% lower price.
Stock, overclocked, underclocked, undervolted, overvolted, watercooled, oil cooled I would be suprised is it is more than 5% deviation from its paper specs relative to a 7970 IN THE SAME CONFIGURATION.
i.e.
overclocked 7970 vs overclocked 7950
watercooled 7970 vs watercooled 7950
undervolted 7970 vs undervolted 7950
I wonder how the VRM's and Caps will hold up with 24/7 mining and overclocking without them being covered like on the 7970....
I think $400 is steep simply because other options will be available for those who wait. But comparing it to a 7950 is just dumb.
