For quite a while, it's been rather uncertain whether there would be an 8 GB variant of any R9 290X graphics card, and it was rumored that Sapphire would be coming with one. Later, this rumor was disregarded; however, it appears to have now reached shops over in the EU.
The Sapphire R9 290X Vapor-X 8 GB carries the new Vapor-X cooler, which is built with a vapor chamber inside of it for even better thermal performance than the already very impressive Tri-X cooler. It has three fans, a handful of heat pipes and a massive aluminum fin array.
The GPU aboard this specific card is clocked at 1060 MHz, giving it a 60 MHz overclock over reference frequencies. The better part though, is that it is actually capable of sustaining these frequencies, unlike reference coolers on R9 290(X) graphics cards. The 8 GB of GDDR5 memory is clocked at an effective speed of 5.6 GHz.
Pricing for the unit is set at €730 over at Caseking.de in Germany, while the card can be yours for £600 in the UK at Overclockers UK. No word on U.S. availability yet.