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AMD Silently Launches Rx 7800M Gpu - Mobile Navi 32 With 12Gb Of Vram
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Arthur T Knackerbracket has processed the following story [tomshardware.com]:
The RX 7800M is a powerful mobile GPU for gaming notebooks.
AMD has officially debuted its sixth discrete GPU in its mobile RX 7000 lineup, the RX 7800M [amd.com]. The new GPU is AMD's second mobile RDNA 3 GPU to arrive with a chipset-style architecture and is the runner-up to the flagship RX 7900M.
The RX 7800M is armed with 60 RDNA 3 compute units, 96 ROPS, 3,840 stream processors, 48MB of Infinity Cache, and a game clock of 2,145MHz. Bus width was not mentioned, but we suspect it is using a 192-bit interface. Memory bandwidth is rated at up to 432GB/s, memory capacity is 12GB, and GDDR6 ICs operate at up to 18 Gbps. GPU power consumption is rated at up to 180W.
AMD's new chipset-style mobile GPU is essentially a stripped-down RX 7800 XT [tomshardware.com] operating at lower clock speeds and power consumption combined with lower memory specs from the RX 7700 XT [tomshardware.com]. The GPU's compute unit count also aligns perfectly with the new Sony [tomshardware.com] PS5 Pro [tomshardware.com]'s Compute Units, meaning the 7800M most likely would have the same compute power as the PS5 Pro in a theoretical scenario where GPU clocks and power consumption were the same.
We previously discovered [tomshardware.com] that the RX 7800M performs very similarly to AMD’s desktop RX 7700 XT in some vendor-provided benchmarks [tomshardware.com]. This is unsurprising since both GPUs share the same memory configuration, and the GPU’s superior core count configuration offsets the 7700 XT’s low power/clock speed. Compared to Nvidia, the RX 7800M performs faster than its RTX 4070 laptop GPU but is slower than its RTX 4080 mobile counterpart. Performance was also a touch behind Nvidia’s desktop RTX 4070 [tomshardware.com].
It remains to be seen how popular AMD’s RX 7800M will be. Even though AMD’s mobile RDNA 3 GPUs are pretty competitive in specs, it is rare to see any discrete AMD GPU in the laptop market, with only a few brands, such as Asus, putting much effort into AMD mobile GPU adoption. For instance, AMD’s RX 7900M was an exclusive GPU for the Dell Alienware M18 at launch [tomshardware.com], and AMD’s RX 7700S can only be found in select Asus and Framework laptops.
