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AMD has revealed the Radeon RX 480 graphics card - its debut GPU based on the new Polaris graphics technology. Set to go on sale on June 29th priced at $199, the RX 480 has been validated for premium VR PC gaming and should offer ballpark performance equivalent to GTX 970/980 and AMD's own R9 390/390X.The technical make-up of the card reveals 36 compute units with a total of 2306 shaders, paired with a 256-bit memory interface. According to AMD we should expect to see cards released with either 4GB or 8GB of GDDR5, and a theoretical maximum of 256GB/s of bandwidth. We should expect to see HDMI 2.0 and HDCP 2.2 support for high-end 4K functionality, and DisplayPort 1.3 and 1.4 is also confirmed, along with HDR. The card has a 150W TDP - a massive reduction from R9 390 and 390X.
Missing so far from AMD's specs are the all-important clock speeds. This can usually be worked out via the TFLOPs figure, but here AMD is being quite vague, saying only that over five TFLOPs of computational power is on tap in RX 480. However, leaks are suggesting a 1266MHz boost clock, up significantly from the 1000-1050MHz found in the existing R9 390 and 390X. This, combined with architectural enhancements, may help to make up the computational deficit with AMD's older equivalent products, which featured 40 and 44 compute units respectively.
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