AMD is reportedly pushing back the commercial release of the Radeon RX 500 graphics card series, likely following the scheduled debut of the Ryzen 5 CPUs. The refreshed Polaris GPUs will start selling on April 18, new reports said.

AMD has decided to first deploy the mid-range Ryzen 5 processors but according to WCCFTech, no clear explanation was offered on the change of the release schedule. What was clear - the new RX 500 cards, which will be on Polaris 10, 11 and 12, will only start selling by mid-April.

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This will be specifically true for the RX 580 and 570, which WCCFTech said are seen as Polaris 10 GPUs with on-board memory of 8GB GDRR5 and 4GB GDRR5, respectively. Boost speed for the 580 is 1340MHz with processing performance of 6.17TFLOPs while the latter will clock at top speed of 1244MHz and will process at 5.10TFLOPs.

As the direct descendants to the RX 480 and 470 of last year, the 580 and 570 will be priced in nearly the same levels when their predecessors were introduced. The same report said the RX 580 will come with a sticker price of no more than $199 for the 8GB edition (with memory speed of 8.0GHz) though it remains unclear if AMD will issue the 580 with an increased memory chip.

As for the RX 570, the asking price will be around $150 but according to WCCFTech this would be for the 8GB model with memory speed of 7.0GHz.

AMD is also set unleash the RX 560 on Polaris 11 that is tipped for the budget-conscious GPU buyers. Packing a clock speed of 1287MHz, performance muscle of 2.63TFLOPs and 4GB of GDRR5 (with clock speed of 7.0GHz), the 560 will be the latest Radeon card that can be had for under $100.

But likely to serve as the entry-level AMD Radeon GPU is the RX 550 but little is known on the card for now except that it will be on Polaris 12. It's expected too that the 550 is to challenge NVIDIA's GTX 1050.

It should be noted, the report said, that the RX 500 series is not part of AMD's upcoming Vega 10 and 11 platforms that will soon come out as the RX Vega GPUs.