AMD’s latest graphics technology finds its way into discrete GPUs for laptops and RNDA 3 looks promising.
Improved efficiency is a huge boon in mobile applications, so it’s no surprise that AMD is being aggressive about bringing the new architecture to bear in the laptop market. As part of its CES 2023 announcements, AMD unveiled the first RDNA 3-based Radeon GPU for laptops. There’s four separate models, but all four are based on the same silicon base, code-named Navi 33 First up we have the Radeon RX 7600M and its « XT » form. These are RDNA 3 GPUs with 28 and 32 compute units, respectively, which gives them shader counts of 1,792 and 2,048. AMD doesn’t disclose clock rates, but says that the GPUs can produce 28 and 32 TFLOPs of FP32 compute. With those specifications, these GPUs aren’t adding up for us math-wise versus performance, so we’ve asked AMD for further clarification.AMD’s specifications table (reproduced at the end of this post) shows that these GPUs are using 16 Gbps (for the RX 6700M) or 18 Gbps (for the « XT ») GDDR6 memory. 8GB is a great amount for mid-range GPUs like these, and the relatively high transfer rate gives them 256GB/sec and 288GB/sec of memory bandwidth—solid specs for the 1080p gaming these engines are meant to crunch on.Representatives from the company told us that the Radeon RX 7600M XT can approach the performance of a mobile Geforce RTX 3080 in some tests. While that may be true, the company’s own numbers pit the new GPU against the laptop-borne 8GB version of the GeForce RTX 3060 as well as the 12GB desktop version.AMD’s new part generally comes out ahead in these numbers, but laptop GPU performance is often as much about power budget and cooling as it is about processor configuration.
