AMD Radeon RX Vega Mobile vs AMD Radeon RX Vega 8 (Ryzen 4000/5000) vs AMD Radeon RX Vega 64

AMD Radeon RX Vega Mobile

The AMD Radeon Vega Mobile is a dedicated graphics card for laptops. It most likely uses the same chip as the Kaby-Lake-G graphics part. Rumors currently speak of 28 CUs (= 1792 shaders) instead of the 24 CUs in the Kaby-Lake-G top model. The clock speed should be also around 1 GHz. As graphics memory, the GPU most likely also uses 4 GB HMB2.

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 power consumption should be similar to the Kaby-Lake-G chips (altough this may be more efficient due to power sharing and distribution). The Kaby-Lake-G is rated at 100 Watt including a 35-45 Watt processor.

The Radeon Vega Mobile was announced one day before CES at a press event by Lisa Su. 

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.

AMD Radeon RX Vega 64

The AMD Radeon RX Vega 64 is a high-end desktop graphics card that was announced in August 2017. It uses the Vega 10 chip and is the top model of the AMD desktop graphics cards (through 2018). It offers 64 CUs clocked at 1247 - 1546 MHz (Boost) and 8 GB HBM2 graphics memory. In games, the Vega 64 offers a similar performance as a Nvidia GeForce GTX 1080 on average.