AMD introduces the first four mobile graphics chips from the Radeon RX 7000 series. They all use the new Navi33 GPU – a smaller version of the Navi31 GPU that sits on the Radeon RX 7900 XTX and RX 7900 XT desktop graphics cards. The newcomers thus also give an outlook on what AMD’s future entry-level desktop class could look like.
Two series appear first: the RX 7000M for the masses and the RX 7000S as slightly more efficient versions for slimmer gaming notebooks. The respective top models Radeon RX 7600M XT and Radeon RX 7700S use an expansion with 32 compute units, i.e. 2048 shader cores.
Four similar notebook GPUs
The slimmed down versions Radeon RX 7600M and Radeon RX 7600S are a bit weaker with 28 compute units (1792 shader cores). They also use slower GDDR6 memory chips with 16 instead of 18 GBit/s, which reduces the transfer rate from 288 to 256 GB/s. The memory capacity is identical with 8 GB on 128 data lines in all models, as well as the 32 MB Infinity Cache.
Specifications of the RX-7000 mobile chips. AMD continues to carry some 6000 models under it.
Meanwhile, the multimedia engine is up to date: all the important decoders and encoders for converting videos are included, including the AV1 encoder.
As with Nvidia’s GeForce mobile series RX 4000, the real performance depends on the power limit granted in the respective notebook. For example, manufacturers can configure the Radeon RX 7600M XT with 75 to 120 watts, the sister model Radeon RX 7700S with 75 to 100 watts. In return, the Radeon RX 7700S loses some of its maximum clock – AMD calls a boost of 2200 instead of 2300 MHz, which means that the computing power falls from 21.4 to 20.5 FP32 teraflops. The weaker GPUs go down to 50 watts.
6 instead of 5 nm
Unlike the previously introduced Navi31 GPU (Radeon RX 7900 XT[X]) and according to rumors the Navi32 GPU, which has not yet been presented, Navi33 is built monolithically. The Infinity Cache and the memory controller are therefore in the same die as the arithmetic units. The chip order manufacturer TSMC produces the Navi33 chips with 6-nanometer structures, i.e. an improved 7-nm process. Compared to the 5 nm technology used by Navi31, this saves production costs.
AMD expects the first notebooks with RX 7000 graphics chips in the first half of 2023. Asus, for example, builds the GPUs into its TUF Gaming A16, Dell into the so-called Advantage versions of the Alienware m18 and m16.
(mma)
