AMD Radeon RX 7900 Series Deep Dive

AMD Radeon RX 7900 Collection Deep Dive

Posted on

In the present day, AMD takes the wraps off its upcoming Radeon RX 7900 XTX and Radeon RX 7900 XT graphics playing cards. We had a few of the particulars with the November 3 announcement, however AMD wished to carry a number of extra items of knowledge till at the moment — simply forward of the Nvidia RTX 4080 launch. These new AMD GPUs are set to compete towards the finest graphics playing cards, and we anticipate each will land close to the highest of the GPU benchmarks hierarchy come December 13.

We even have a deep dive into the AMD RDNA 3 structure, a have a look at AMD’s Gaming and ISV relations, and a few particulars on the Software program and Platform ecosystem. However for the 7900 sequence, let’s begin with the uncooked specs. 

Swipe to scroll horizontally
AMD RX 7900 Collection Specs
Graphics Card RX 7900 XTX RX 7900 XT RX 6950 XT
Structure Navi 31 Navi 31 Navi 21
Course of Know-how TSMC N5 + N6 TSMC N5 + N6 TSMC N7
Transistors (Billion) 58 (45.7 + 6x 2.05) 56 (45.7 + 5x 2.05) 26.8
Die measurement (mm^2) 300 + 222 300 + 185 519
CUs / SMs 96 84 80
SPs / Cores (Shaders) 6144 (12288) 5376 (10752) 5120
Tensor / Matrix Cores ? ? ?
Ray Tracing “Cores” 96 84 80
Enhance Clock (MHz) 2500 2400 2310
VRAM Pace (Gbps) 20 20 18
VRAM (GB) 24 20 16
VRAM Bus Width 384 320 256
L2 / Infinity Cache 96 80 128
ROPs 192 192 128
TMUs 384 336 320
TFLOPS FP32 (Enhance) 61.4 51.6 23.7
TFLOPS FP16 (FP8) 123 103 47.4
Bandwidth (GBps) 960 800 576
TDP (watts) 355 300 335
Dimensions 287x123x49mm 276x113x49mm 267x118x49mm
Launch Date Dec 13, 2022 Dec 13, 2022 Might 2022
Launch Worth $999 $899 $1,099

There are quite a lot of modifications in comparison with RDNA 2, however basically the RX 7900 XT comes packing 20% extra Compute Models (CUs), with double the variety of FP32 (32-bit floating level) computational performance per CU. AMD nonetheless makes use of 64 Streaming Processors (SPs) per CU, although, in quite a lot of methods, it is extra like double that determine.

The die sizes are comparatively similar to the earlier era Navi 21, besides now there is a single GCD chiplet (Graphics Compute Die) and as much as six MCD chiplets (Reminiscence Cache Die). The XTX has the absolutely enabled GCD and 6 MCDs, whereas the XT has {a partially} enabled GCD with 84 CUs and pairs that with 5 MCDs — the sixth MCD slot will nonetheless be occupied, both with a dummy piece of silicon or a non-functional MCD (non-functional as a result of it is fused off, although it might or is probably not faulty).

Transistor counts have shot up so much relative to the earlier era RX 6000-series, with 58 billion whole transistors in comparison with simply 26.8 billion on Navi 21. Due to the doubled FP32 functionality, theoretical compute has jumped by as much as 159% in comparison with the RX 6950 XT. with 61.4 teraflops on the XTX card and 51.6 teraflops on the XT mannequin.

Supply hyperlink

Leave a Reply

Your email address will not be published. Required fields are marked *