I guess we'll be seeing a few more leaks on the 7950 this week, but the new 28 nm "Tahiti" silicon based 7950 specs seem to finalize, the "Tahiti Pro" or HD 7950 should look like this::
- 1792 stream processors, 28 GCN compute units
- 112 TMUs, 32 ROPs (derived)
- 384-bit GDDR5 memory interface
- 3 GB memory, memory clock around 5.00 GHz