Geforce RTX 4000 and Radeon RX 7000: Leaks with new spectable


from Maximilian Hohm
AMD’s RDNA 3 and Nvidia’s Ada Lovelace are long awaited new graphics cards that have already been the subject of many rumors. Most of them have in common a relatively high power consumption and at the same time a high performance. In the case of RDNA 3, a chiplet design is also assumed, which should be cheaper to manufacture than a giant monolithic matrix. From this point on, most rumors differ on many points, such as memory speed and expansion, exact designation, TBP and more.

The reader “Kepler_L2” partly agrees with “kopite7kimi” in his assumptions, but also has some opinions of his own. He sees a Geforce RTX 4090 Ti based on an AD102 with 144 computer units and 24 GiB GDDR6X with 24 Gbps and a Radeon RX 7970XT3D based on a Navi 31 with 96 computer units and 24 GiB GDDR6 memory with 18 Gbps. The TDPs are said to be 600 and 450 watts, respectively, and the computing units are obviously not directly comparable.

One step below is the RTX 4090 and RX 7950XT, both of which should still have the same memory expansion, even if the Geforce clock drops to 21 Gbps. The GPUs are also still the same, but these are lower expansion steps. This reduces the clock frequencies and power consumption, the TDPs are said to be 450 and 400 watts respectively. Here it seems very possible that this level will represent the flagships so far, and that the RTX 4090 Ti and RX 7970XT3D will only come on the market later.

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The RTX 4080 Ti and RX 7900XT should represent the smallest expansion steps of the AD102 and Navi 31. They lack additional execution devices, and the memory interfaces should be only 320 bits wide instead of 384 bits. Therefore, the memory expansion also drops from 24 GiB to 20 GiB. The clock frequencies and TDPs continue to fall, with Geforce it should still be 420 watts, while the AMD card should get up to 350 watts.

From RTX 4080 and RX 7800XT it could be more interesting for the wide mass of gamers. Compared to the current generation, however, both models no longer use the “big” graphics chip, but a smaller model. AD 103 and Navi 32 should fix that and offer significantly fewer execution units than the flagship ship’s small expansion steps. The memory interface on both models should shrink to 256 bits and therefore 16 GiB of graphics memory will be installed. Nvidia is said to have a TDP of 400 watts due to a very high core clock, while AMD’s RX 7800XT is said to cope with 320 watts. As with the Radeon RX 6800, there should be no direct Nvidia counterpart to the Radeon RX 7800 that has a comparable memory expansion.

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Only the RTX 4070 and Radeon RX 7700XT had to compete with each other again. This time, however, the Radeon card does not appear to have its own mid-range chip, but to rely on a sleek Navi 32, whose memory interface is reduced to 192 bits. That would mean a draw with Geforce, and both cards would have to be equipped with 12 GiB GDDR6, while all Nvidia cards still get GDDR6X memory. The TDPs should be 300 or 250 watts for Nvidia and AMD.

According to Kepler_L2, Nvidia was to launch the RTX 4060 Ti without a direct AMD opponent and equip it with 10 GiB Vram. It is said to have a TDP of 275 watts. AMD is following the same schedule with the Radeon RX 7600 XT, which carries the small Navi 33 and is equipped with 8 GiB Vram. Under this card, competition is again planned between the Radeon RX 7600 and the Geforce RTX 4060. Both cards must use 8 GiB Vram and provide them with a 128-bit memory interface. The TDPs are said to be 200 watts (AMD) and 240 watts (Nvidia).

According to Kepler_L2’s information, all cards appear to be dependent on different amounts of (infinite) cache and in some cases they have significantly higher TDPs than their predecessor models. The most economical AMD card would still have 200 watts, while Nvidia would have nothing below 240 watts according to this information.

Source: Kepler_L2

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