In a few months AMD will launch the Radeon RX 500 series, its new generation of High Performance and Mainstream graphics cards. The RX 500 series will replace the RX 400 series. It will offer better performance and efficiency to compete directly with the NVIDIA Pascal series. While there is a chance that details might change, AMD has been sending information to several AIBs that the RX 500 series cards will feature the Vega 10 and 11 graphics cores.
High Performance Variant of RX 500 Will feature Vega 10 Graphics Core
At CES 2017 AMD showcased their Vega 10 GPU in the Instinct M125. Capable of handling 12.5 TFLOPs (FP32) and 25 TFLOPs (FP16) this product aims to accelerate AI research. Ever since enthusiasts have been eagerly awaiting announcement of the high-performance variants of the RX 500 series family.
|Graphics Card||R9 Fury X||RX 480||TBA||TBA|
|GPU||Fiji XT||Polaris 10||Vega 11||Vega 10|
8.6 (FP16) TFLOPS
5.8 (FP16) TFLOPS
25 (FP16) TFLOPS
|Memory||4GB HBM||8GB GDDR5||TBA||8GB HBM2|
|Bandwidth||512 GB/s||256 GB/s||TBA||409.6 GB/s|
What do We Know of the AMD Vega 10
NCU (Next Compute Unit) design derived 14nm GFX9 core architecture will be utilized in the new graphics chips.The graphics cards feature 64 Compute Units or 4096 Stream processors and AMD plans to increase throughput by increasing the clock speeds. The increase in throughput will allow AMD to perform better than the 28nm, GCN 3.0 architecture derived Fiji GPUs. Early calculations indicate that the die of the chip spans over 500mm² and features 2 HMB2 stacks which can be extended up to 16 GB of HMB2 VRAM. The demonstration given by AMD on DOOM and Star Wars: Battlefront featured only 8 GB of HMB2 VRAM on the chipset.
The Radeon R9 Fury X, which was the first generation of HMB graphics cards, was limited to just 4 GM of VRAM as it had only one stack of 4 layers (256 MB per layer). The new HMB2 cards have 2 stacks and can clock speeds of 2 Gb/s as compared to 1 Gb/s on HMB1 cards
Vega 11 Graphics Core for Mainstream Tier Cards
The smaller Vega 11 chip will be utilized for the mainstream and performance tier cards. The Vega 11 core will be replacing the Polaris 10 chip as AMD’s standard mainstream chip and will be priced under $300. In order to keep the prices lower AMD might go with the traditional GDDR5X memory or they might use a single stack HMB1. Both these options would limit the maximum memory capacity but will allow fewer errors in the manufacturing process and drive the price down.
There are some rumors that AMD might be continuing development on their Polaris chips because they are AMD’s most competitive product. Chances are that the Radeon RX 460 which features the Polaris 11 core might re-branded as the RX 560.
|HD 7000 Series||Radeon 200 Series||Radeon Fury Series||Radeon RX 400 Series||TBA|
|Flagship GPU||Tahiti||Hawaii||Fiji||Polaris 10||Vega #TBA|
|GCN Iteraion||GCN 1||GCN 2||GCN 3||GCN 4||GCN NCU|
So far this is all the information that we have available, however the Capsaicin and Cream event, which will live stream from GDC on the 28 of Feb will bring more details. AMD is set to unveil some new Graphics and VR gaming technologies at this event. We should have more details coming in by that time. In the mean time check out the test of the RX 500 in 4 games.