I stumbled upon this review while comparing 280x's on the market and I have to say that it is quite impressive. From the benchmarks it is going toe to toe with a reference 780GTX board.
And in reference to the board:
And in reference to the cooler:
I might have to pick one of these up, right now I have a Sapphire 6970 that is starting to show its age
The Sapphire Toxic Edition is the fastest R9 280X we have tested since launch, with the core clocked at 1,150mhz and the GDDR5 memory at 1,600mhz (6.4 Gbps effective). Thanks to the enhanced power delivery, we managed to squeeze almost 1,300mhz from the core and 1,762mhz from the GDDR5 memory (7.05 Gbps effective). Again, this is the highest manually tuned clock speed from any R9 280X this week. Some credit has to go to the capabilities of the Tri-X cooler which features three high grade aerofoil fans and gargantuan 10mm heat pipes.
And in reference to the board:
Sapphire have spared no expense in selecting the highest grade components, incorporating double side black Diamond choke capacitors and a 8+2+2 phase digital power phase to ensure rock solid performance under the most extreme load situations.
And in reference to the cooler:
We would go as far to say that the new Tri-X cooler is the best AMD cooling solution on the market. Not only did it outperform the triple slot cooler on the Asus R9 280X Matrix Platinum, but it did so by a staggering 10c under load. We wouldnt say the Sapphire R9 280X Toxic Edition was the quietest solution on the market, but the balance of noise to performance is about as good as we could feasibly expect. We would imagine gamers wont mind a little fan noise under load anyway, and it is certainly much quieter than the HD7970 6GB Toxic Edition of the last generation.
I might have to pick one of these up, right now I have a Sapphire 6970 that is starting to show its age