AMD’s latest Fiji-based Radeon R9 390X cards have been reported to come in both 4GB and 8GB variants in order to compete with its NVIDIA rival, the GeForce Titan X with 12GB VRAM.
It has been revealed a while back that the company will be using High Bandwidth Memory on these cards. This means that the 8GB variant will not have the numbers to go mainstream compared to the 4GB variant, requiring 8Gbit chips, 1GB per chip, which will provide it with an outstanding 1024 MB/s bandwidth.
The Radeon R9 390X will be a true competitor against the GeForce Titan X and considering that the GeForce GTX 980 already handles 4K extremely well with its 256-bit memory interface, the 1024-bit interface and its next-gen HBM RAM should reveal some 4K numbers never seen before. AMD is planning to reveal the R9 390X at Computex in June.
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