A bit higher than custom R9 290X 8GB
It appears that AMD might place a US $389 MSRP on the upcoming Radeon R9 390X graphics card, at least according to latest rumors.
To be available alongside the Vapor-X model
Following the successful launch of the R9 290X Vapor-X 8GB graphics card, Sapphire has decided to introduce yet another Radeon R9 290X graphics card with 8GB of video memory, lower clocks, and a Tri-X triple-fan cooler.
Two Hawaii XT GPUs and four 8-pin PCI-E connectors
Factory-overclocked R9 290X with Vapor-X cooler
Reference all the way
Review roundup: Proper flagship with a great cooler
The fastest R9 290X and R9 290 from Club 3D
The Asus ROG ARES III With 8GB of memory
Preview: Gives GTX 780 a run for its money
Less than encouraging prices