GeForce RTX 3090 vs Radeon RX Vega 64

Intro

Compare those specs to the Radeon RX Vega 64, which has a GPU core clock speed of 1247 MHz, and 8192 MB of HBM2 memory set to run at 1890 MHz through a 2048-bit bus. It also is made up of 4096 Stream Processors, 256 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX Vega 64		295 Watts
GeForce RTX 3090		350 Watts
	Difference: 55 Watts (19%)

Memory Bandwidth

In theory, the GeForce RTX 3090 will be 94% quicker than the Radeon RX Vega 64 in general, due to its higher bandwidth. (explain)

GeForce RTX 3090		958668 MB/sec
Radeon RX Vega 64		495411 MB/sec
	Difference: 463257 (94%)

Texel Rate

The GeForce RTX 3090 should be much (approximately 43%) better at AF than the Radeon RX Vega 64. (explain)

GeForce RTX 3090		457560 Mtexels/sec
Radeon RX Vega 64		319232 Mtexels/sec
	Difference: 138328 (43%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce RTX 3090 is the winner, and very much so. (explain)

GeForce RTX 3090		156240 Mpixels/sec
Radeon RX Vega 64		79808 Mpixels/sec
	Difference: 76432 (96%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.