GeForce RTX 3090 vs Radeon RX Vega 56

Intro

Compare those specifications to the Radeon RX Vega 56, which features GPU core speed of 1156 MHz, and 8192 MB of HBM2 RAM set to run at 1600 MHz through a 2048-bit bus. It also features 3584 SPUs, 224 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX Vega 56		210 Watts
GeForce RTX 3090		350 Watts
	Difference: 140 Watts (67%)

Memory Bandwidth

The GeForce RTX 3090 should theoretically perform much faster than the Radeon RX Vega 56 in general. (explain)

GeForce RTX 3090		958668 MB/sec
Radeon RX Vega 56		419430 MB/sec
	Difference: 539238 (129%)

Texel Rate

The GeForce RTX 3090 is quite a bit (approximately 77%) faster with regards to AF than the Radeon RX Vega 56. (explain)

GeForce RTX 3090		457560 Mtexels/sec
Radeon RX Vega 56		258944 Mtexels/sec
	Difference: 198616 (77%)

Pixel Rate

The GeForce RTX 3090 should be much (more or less 111%) more effective at anti-aliasing than the Radeon RX Vega 56, and capable of handling higher screen resolutions better. (explain)

GeForce RTX 3090		156240 Mpixels/sec
Radeon RX Vega 56		73984 Mpixels/sec
	Difference: 82256 (111%)

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: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.