so best bet for R9 290 are 2560 SP,4 GB VRAM,512 bit wide,feature link-bus Crossfire,launch price $499,and will take a seat 5 - 10% slower than GTX 780
I just noticed that the TPU GPU database has the R9 280X powered by a Curacao XT (aka Pitcairn XT). While it might be true, it confuses me from a manufacturing standpoint:
This would mean that except for the R9 290 (non-X) that AMD would be using only fully-enabled dies. This seems to make no business sense since any chips with defects can't be sold. Granted, 28nm is a mature process, but usually manufacturers have two tiers of product - a fully enabled one and a feature cut one to use the defective dies. Especially for Tahiti - a 365mm^2 chip has to have a significant number of defective die, and I doubt AMD wants to put a disabled Tahiti into their mobile lineup due to power concerns. I guess then have OEM products to use the defective parts?
In that case the lineup would look like this
R9 290X = Hawaii XT (Full Chip - 2816 SP, 4GB w/512-bit, ~$600)
R9 290 = Hawaii Pro (Binned Chip - 2560 SP, 4GB w/512-bit, ~$400-450)
R9 280X = Tahiti XT2 (7970 Ghz - 2048 SP, 3GB w/384-bit, ~$300)
R9 270X = Curacao XT (7870 - 1280 SP, 2GB w/256-bit, ~$200)
R7 260X = Bonaire XT (7790 - 896 SP, 2GB w/128-bit, ~$139)
R7 250 = Cape Verde XT (7770 - 640 SP, 1GB w/128-bit, <$89)
Only AMD can get away with hosting 4 hours of PR nonsense, reveal barely anything at all about the product most people were interested in... and still get credit for it.
I disagree that it's specific to AMD; that's what most electronics-related press conferences are like nowadays. Think of the 2013 Microsoft and Sony press conferences at E3; they were basically identical in structure to the AMD press conference and revealed very little about the hardware itself.