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AMD Launches China-only Radeon RX 560 XT
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[Image: 560xt_card2_678x452.jpg]

This evening – or rather this morning in China – AMD is rolling out a new mid-to-entry level Radeon RX video card. Dubbed the Radeon RX 560 XT, the new part is a lower-tier Polaris 10-based card that’s designed to fill the gap between the RX 560 and the RX 570 in the Chinese market. This new SKU will only be sold in China – don’t expect to see it come to North America – with AMD’s close partner Sapphire being the sole vender of the card.

By the numbers, the Radeon RX 560 XT is a relatively straightforward cutting down of the Radeon RX 570, itself a cut-down Polaris 10 SKU. Relative to the 570, the 560 XT drops another 4 CUs, bringing it down to 28 CUs. Past that, the clockspeeds have also taken a hit; the 560 XT will top out at just 1073MHz for the boost clock, instead of 1244MHz like its fuller-fledged 570 sibling. So for shader and texture performance, it will deliver around 75% of the throughput of the RX 570.

Meanwhile, although the card is taking a hit on the CU count, AMD has confirmed that while the card is retaining Polaris 10’s full 256-bit memory bus. This will be paired with GDDR5 running at 6.6Gbps, so there is a small step down in bandwidth. But overall it conserves most (~94%) of RX 570’s bandwidth, ensuring the card doesn’t end up bandwidth-starved as a theoretical 128-bit Polaris 10 would be. In either case, Sapphire will be offering cards with both 4GB and 8GB of VRAM, so there will be an 8GB premium option available for buyers who are nervous about 4GB cards coming up short.

AMD has also confirmed that the new product retains Polaris 10's full 32 ROP backend, so its pixel throughput is only slightly diminished overall by the reduced clockspeeds (~86%). That AMD would go with 32 ROPs was not a given; AMD’s ROPs are not fully coupled to their memory controller, so they can scale them independently of the memory controller width.
Chttps://www.anandtech.com/show/14079/amd...n-rx-560xtontinue Reading
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