AMD Radeon RX Vega 8 (Ryzen 4000/5000) vs NVIDIA GeForce RTX 4080 Super vs AMD Radeon RX Vega 7

AMD Radeon RX Vega 8 (Ryzen 4000/5000)

The AMD Radeon RX Vega 8 is an integrated GPU for notebooks. It is used for the Ryzen 7 APUs of the Renoir generation (Ryzen 4000 Mobile) and Cezanne (Ryzen 5000 Mobile). The GPU is based on the Vega architecture (5th generation GCN) and has 8 CUs (= 512 of the 704 shaders) clocked at up to 1,750 MHz (Ryzen 7 4800U) or 2,100 MHz (Ryzen 9 5980HX). The performance depends on the configured TDP (12-25 W at launch), the clocks, the cooling, and the memory configuration). The GPU should benefit from fast dual-channel DDR4-3200 RAM (contrary to DDR4-2133 single-channel, which is also possible). Compared to the similar Radeon RX Vega 8 in the Raven Ridge generation (Ryzen 2000 Mobile), the GPU is clocked significantly higher (1.750 versus 1.100 MHz Boost, +59%).

The Vega architecture offers some improvements over the Polaris generation and now supports DirectX 12 Feature Level 12_1. More information is available in our dedicated article about the Raven Ridge architecture.

The performance is clearly faster than the old RX Vega 8 thanks to the higher clock speed and faster main memory (if used). Still it is positioned in the entry level (compared to dedicated graphics cards) and only suited for low demanding games.

Thanks to the modern 7nm process and clever power-saving features, the power consumption is comparatively low (according to AMD), so the graphics card can also be used for slim and light notebooks.

NVIDIA GeForce RTX 4080 Super

The Nvidia GeForce RTX 4080 Super is a high-end desktop graphics card based on the Ada Lovelace architecture. It uses the AD103 chip in full configuration with 10,240 cores and 16 GB GDDR6X graphics memory (256-bit bus with 23 Gbits).

Performance

The ray tracing performance is outstanding, thanks to 80 dedicated cores, and the 320 Tensor cores can be used for DLSS 3.

The gaming performance without DLSS is ideal for 4k with around 60fps and 2k with higher frame rates in demanding games without ray tracing effects (e.g. F1 22 or Cyberpunk 2077). With ray tracing, the use of DLSS is recommended. Compared to the competition, the performance without DLSS and ray tracing is slightly better than the significantly cheaper AMD Radeon RX 7900 XT.

The currently available RTX 4080 cards are very large (2.5 or 3 slots) and use the new 12VHPWR connector (which has caused some problems with adapters).

Power consumption

The AD103 chip is produced at TSMC in 5nm (4N with EUV) and is specified with a TGP (Total Graphics Power) of 320 watts (Nvidia recommends at least a 750-watt power supply).

AMD Radeon RX Vega 7

The AMD Radeon RX Vega 7 is an integrated GPU for notebooks. It is used in the Ryzen 4000 and Ryzen 5000 mobile APUs. The GPU is based on the Vega architecture (5th generation GCN) and has 7 CUs (= 448 shaders) clocked at up to 1,800 MHz. The iGPU's performance depends on the TDP of an APU (15, 35, 45 W or cTDP), the clocks, the cooling, and the memory configuration). The GPU should benefit from fast dual-channel DDR4-3200 RAM (contrary to DDR4-2133 single-channel, which is also possible).

The Vega architecture offers some improvements over the Polaris generation and now supports DirectX 12 Feature Level 12_1. More information is available in our dedicated article about the Raven Ridge architecture.

The performance should be slightly lower than the older RX Vega 8 GPU (1 CU more, but lower clock speed). That means, only some demanding games of 2019 will run in lowest detail settings. Less demanding games like Fifa 20 or Dirt Rally 2.0 should run in higher settings and 1920 x 1080.

Thanks to the 7 nm process and clever power-saving features, the power consumption is comparatively low (according to AMD), so the iGPU won't look out of place in a slimmer, lighter laptop.