AMD has finally confirmed the full specifications of Radeon RX 400 based on Polaris.
AMD Polaris 10 has 36 CUs and Polaris 11 has 16 CUs
It is now confirmed that Polaris 10 has 36 Compute Units (2304 Stream Processors), while it’s slower brother features 16 CUs (1024 Stream Processors). Smaller Polaris chip is also confirmed to feature 128-bit memory bus.
AMD claims that Polaris architecture has 2.8 times the performance per Watt compared to older architecture (Radeon R9 270X to be specific).
Footnotes from new press deck revealed some interesting information. First off, the mobile RX series will use different naming schema than already released R? M4?? series. For instance, AMD confirmed that new card based on Polaris 11 is called Radeon RX 480M (so the M is now a postfix). This card is also confirmed with TDP at 35W, and speaking of watts, Radeon RX 470 is confirmed to be 110W TDP card. Later in this post you will find some actual official benchmarks.
AMD Radeon RX 480 8GB scores 6.3 points in Stream VR benchmark. As noted by ComputerBase, R9 390 has similar/indentical score, which explains why AMD used R9 380 in this comparison..
It’s worth nothing that this slide is titled ‘first in a family’, does it mean there are more cards coming later?
We also get to see the first official pictures of Polaris silicons. Polaris 10 will deliver 5+ FLOPS, while Polaris 11 can offer 2+ TFLOPs single-precision computing power.
UPDATE: Tweakers.net posted some benchmarks based on footnotes in the press deck:
Radeon RX 480M vs R9 280M
Radeon RX 470 vs R9 270X