AMD has now officially released some specifications regarding the new AMD Radeon Pro 400 series graphics cards that will be powering Apple's latest 15-inch MacBook Pro notebook.

Released over at AMD's Radeon.com site under the Meet the Creators program, the Radeon Pro 400 series graphics cards will all be based on AMD's latest Polaris 11 GPU. The top offer, Radeon Pro 460, will pack 16 Compute Units (CUs) for a total of 1,024 Stream Processors and compute performance of up to 1.86 TFLOPs. It also comes with 4GB of GDDR5 memory for a total memory bandwidth of 80Gb/s.

The Radeon Pro 455 has 12 CUs for 768 Stream Processors and a peak compute power of 1.3 TFLOPs. The Radeon Pro 450 is a more cut-down version with 10 CUs and 640 Stream Processors and a maximum compute performance of up 1.0 TFLOPs. Both the Radeon Pro 455 and Radeon Pro 450 come with 2GB of GDDR5 memory with the same 80 Gb/s memory bandwidth.

Since all three parts have the TDP of under 35W, we suspect that AMD had to significantly lower both the GPU and memory clocks, despite the fact that these could be based on revised Polaris 11 GPU chips which should be more power efficient. Performance-wise, these should be close to the Radeon RX 460 desktop graphics card.

Unfortunately, we still do not have precise clocks, but we are quite sure that these will show up as soon as first 15-inch MacBook Pro notebooks start shipping to its customers.





Source: Radeon.com.