Sunday, October 30th 2016
AMD Releases Specifications On The Radeon Pro 400 Series Graphics
If you were wondering what the exact specs were on AMD's Polaris-imbued Radeon Pro 400 series of graphics cards, recently announced to be the driving GPUs on the 15-inch MacBook Pro, you need not imagine what they could be anymore. Under their "Meet the Creators" program, the company has now published the specifications.
From top to bottom, the Radeon Pro 460 packs a total of 16 Compute Units (CUs), totalling 1024 stream processors, with peak theoretical performance of up to 1.86 teraflops. The middle of pack Radeon Pro 455 cuts those to 12 CUs and 768 stream processors, with peak theoretical performance of up to 1.3 teraflops. Finally, the lowest performer of the bunch is the Radeon Pro 450, which features only 10 CUs (640 stream processors) and has a theoretical bandwidth of up to 1 teraflops. Also of note is the fact that all three of the parts leverage the same 80 Gb/s memory bandwidth.
Source:
Radeon Creators
From top to bottom, the Radeon Pro 460 packs a total of 16 Compute Units (CUs), totalling 1024 stream processors, with peak theoretical performance of up to 1.86 teraflops. The middle of pack Radeon Pro 455 cuts those to 12 CUs and 768 stream processors, with peak theoretical performance of up to 1.3 teraflops. Finally, the lowest performer of the bunch is the Radeon Pro 450, which features only 10 CUs (640 stream processors) and has a theoretical bandwidth of up to 1 teraflops. Also of note is the fact that all three of the parts leverage the same 80 Gb/s memory bandwidth.
16 Comments on AMD Releases Specifications On The Radeon Pro 400 Series Graphics
Radeon Pro 460 = 16 CUs / 1.86 TFLOPS @ 35W
Radeon RX 460 = 14 CUs / 2.15 TFLOPS @ 75W
To get the TDP to under half, AMD must be doing some crazy binning and have made massive cuts to the clocks.
I imagine Intel and Apple had some strong words over the continued absymal performance of the Iris graphics, which lead to Apple having to bundle the Radeon GPUs with these new Macbooks, making them larger, hotter, and driving up the BOM. If AMD manage to produce a Zen APU that is IPC-competitive with Haswell and delivers performance close to these "Radeon Pro" parts, they will have a winner on their hands, and Intel will be sitting in the corner kicking themselves.
JayzTwoCents was testing a RX480 GTR which was pulling like 40-50W less than regular RX480 while clocking higher. iirc
Apple got fully enabled chip of Polaris 11 first
So...the Radeon Pro 460 is based on an even more cut down Polaris 10? Aka Ellesmere which is in the 470/480