Along with this week's teaser of the forthcoming Radeon RX 470 and RX 460 at E3, AMD also held a short press briefing about Polaris. The bulk of AMD's presentation is going to be familiar to our readers who keep close tabs on AMD's market strategy (in a word, VR), but this latest presentation also brought to light a few more details on the company's two Polaris GPUs that I want to quickly touch upon.

First and foremost, AMD's presentation included a slide with pictures of the two chips, and confirmation on their full configurations. The larger Polaris 10 is a 36 CU (2304 SP) chip, meaning that the forthcoming Radeon RX 480 video card is using a fully enabled chip. Meanwhile the smaller Polaris 11 (note that these pictures aren't necessarily to scale) packs 16 CUs (1024 SPs). This puts it a bit below Pitcairn (20 CUs) before factoring in GCN 4's higher efficiency. Meanwhile as is common for these lower-power GPUs, AMD's slide also confirms that it features a 128-bit memory bus.