Reader MojoKid writes: In preparation for the impending launch of AMD's next-generation Vega GPU architecture, which will eventually reside at the top of the company's graphics product stack, the company unveiled a refresh of its mainstream graphics card line-up with more-powerful Polaris-based GPUs. The new AMD Radeon RX 580 and RX 570 are built around AMD's Polaris 20 GPU, which is an updated revision of Polaris 10. The Radeon RX 580 features 36 Compute Units, with a total of 2,304 shader processors and boost / base GPU clocks of 1340MHz and 1257MHz, respectively, along with 8GB of GDDR5 over a 256-bit interface. The Radeon RX 580 offers up a total of 6.17 TFLOPs of compute performance with up to 256GB/s of peak memory bandwidth. Though based on the same chip, the Radeon RX 570 has only 32 active CUs and 2048 shader processors. Boost and base reference clocks are 1244MHz and 1168MHz, respectively with 4GB of GDDR5 memory also connected over a 256-bit interface. At reference clocks, the peak compute performance of the Radeon RX 570 is 5.1TFLOPs with 224GB/s of memory bandwidth. In the benchmarks, the AMD Radeon RX 580 clearly outpaced AMD's previous gen Radeon RX 480, and was faster than an NVIDIA GeForce GTX 1060 Founder's Edition card more often than not. It was more evenly matched with factory-overclocked OEM GeForce GTX 1060 cards, however. Expected retail price points are around $245 and $175 for 8GB Radeon RX 580 and 4GB RX 570s cards, though more affordable options will also be available.
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