Sapphire's Radeon R9 270X 2 GB graphics card has been around for some time, but now there's a new board approaching, one that has twice the memory amount.
Sadly, Sapphire didn't say what clock frequency the GPU had.
It did, however, say that the 4 GB of GDDR5 VRAM memory worked at 5.6 GHz across a memory interface of 256 bits, which led to a bandwidth of 179 GB/s.
Availability is, or will be, restricted to the Greater China region, unfortunately.
Also, the price is uncertain, but between the non-reference PCB and the dual-fan cooler, as well as the double memory, it should be $30 / €30 to $50 / €50 higher than the stock $199 / €199.
I'd love to tell you all when it will reach Europe and the Americas, but Sapphire hasn't provided this information yet.