AMD has officially introduced its Radeon RX 7800M mobility GPU featuring 60 Compute Units based on the RDNA 3 "Navi 32" silicon.
AMD's Radeon RX 7800M Packs Same 60 Compute Units As The PS5 Pro & 7800 XT, Equipped With 12 GB VRAM For High-End Gaming Laptops & More
AMD's Radeon RX 7800M is the latest addition to the red team's mobility RDNA 3 family which is aimed at high-end gaming laptops and other devices such as the OneXGPU 2, an external GPU solution that will be introduced next month on retail shelves. Although no laptop has been announced yet, we can expect the RX 7800M to see better availability across a selection of devices, something that the RX 7900M and even the mainstream 7600/7700(M/S) variants have lacked a lot.
Starting with the specifications, the AMD Radeon RX 7800M is based on the 5nm Navi 32 GPU silicon which incorporates the RDNA 3 GPU architecture. This chip comes with 30 WGPs and 60 Compute Units, making up a total of 3840 stream processors in a chip that packs 28.1 Billion transistors. The GPU also packs 96 ROPs and has a maximum texture fill rate of 560.4 GT/s and a peak FP32/FP16 performance rated at 35.87/71.73 TFLOPs.
This is the same core count as the AMD Radeon RX 7800 XT and the recently unveiled Sony PlayStation 5 Pro console. The former is based on the same Navi 32 silicon while the latter should be utilizing some enhancements found in the upcoming RDNA 4 architecture. As for the clock speeds, the chip has a maximum game frequency of 2145 MHz which is much lower than the 2430 MHz frequency of the 7800 XT and that's due to its TDP.
The TDP for the AMD Radeon RX 7800M GPU is rated at 180W while the 7800 XT has a 263W (+46%) higher TDP. The frequency difference is around -12% which should lead to lower performance.
The other major difference on the AMD Radeon RX 7800M GPU is its memory configuration which features a 12 GB VRAM versus 16 GB on the RX 7800 XT. The memory runs at a slower 18 Gbps speed versus 19.5 Gbps while the 192-bit bus interface caps the memory bandwidth to a maximum of 432 GB/s versus 624 GB/s on the RX 7800 XT. The 7800 XT also features faster memory bandwidth than the Sony PS5 Pro which is rated at 576 GB/s using 18 Gbps memory modules.
AMD's Radeon RX 7800M GPU also packs 48 MB of Infinity Cache across three MCDs versus the full 64 MB Infinity Cache across four MCDs on the Navi 32 silicon which is leveraged by the 7800 XT. This should lead the GPU to perform somewhat closer to the 7700 XT than the 7800 XT.
Early performance numbers shared by One-Netbook show that the AMD Radeon RX 7800M should be faster than the NVIDIA GeForce RTX 4070 by 28% which is a decent lead however the flagships from NVIDIA such as the RTX 4080 and RTX 4090 are still higher performance and are also available across multiple laptops and platforms, something that isn't the case with AMD's Radeon mobility lineup.
3DMark Time Spy Graphics Score (Higher is Better)
It is expected that the AMD Radeon RX 7800M should be able to handle AAA games with max fidelity at 1080p resolution and FPS above 60. The only uncertainty with the new Radeon GPU is whether will it suffer the same fate as the rest of the Radeon RX 7000M lineup or will it become an aggressive contender in the high-end mobility space which desperately needs competition from the Red camp.
AMD Radeon RX 7000M RDNA 3 Mobility GPU Lineup:
| GPU Name | GPU Architecture | Process Node | Die Size | GPU Cores | GPU Clock (Max) | Memory Capacity | Memory Bus | TGP |
|---|---|---|---|---|---|---|---|---|
| Radeon RX 7900M | RDNA 3 Navi 31 | 5nm + 6nm | 304.5mm2 | 4608 | 2090 MHz | 16 GB GDDR6 (64 MB Infinity Cache) | 256-bit / 512 GB/s | 160-200W |
| Radeon RX 7800M | RDNA 3 Navi 32 | 5nm + 6nm | 200mm2 | 3840 | 2145 MHz | 12 GB GDDR6 (48 MB Infinity Cache) | 182-bit / 432 GB/s | 180W |
| Radeon RX 7600M XT | RDNA 3 Navi 33 | 6nm | 204mm2 | 2048 | 2300 MHz | 8 GB GDDR6 (32 MB Infinity Cache) | 128-bit / 288 GB/s | 75-120W |
| Radeon RX 7600M | RDNA 3 Navi 33 | 6nm | 204mm2 | 1792 | 2070 MHz | 8 GB GDDR6 (32 MB Infinity Cache) | 128-bit / 256 GB/s | 50-90W |
| Radeon RX 7700S | RDNA 3 Navi 33 | 6nm | 204mm2 | 2048 | 2200 MHz | 8 GB GDDR6 (32 MB Infinity Cache) | 128-bit / 288 GB/s | 75-100W |
| Radeon RX 7600S | RDNA 3 Navi 33 | 6nm | 204mm2 | 1792 | 1865 MHz | 8 GB GDDR6 (32 MB Infinity Cache) | 128-bit / 256 GB/s | 50-75W |
News Source: realVictor_M
About the author: A Software Engineer by training and a PC enthusiast by passion, Hassan Mujtaba serves as Wccftech's Senior Editor for hardware section. With years of experience in the industry, he specializes in deep-dive technical analysis of next-generation CPU and GPU architectures, motherboards, and cooling solutions. His work involves not only breaking news on upcoming technologies but also extensive hands-on reviews and benchmarking.
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