GeForce RTX 4090 vs Radeon VII

Intro

Compare those specs to the Radeon VII, which has clock speeds of 1400 MHz on the GPU, and 1000 MHz on the 16384 MB of HBM2 RAM. It features 3840 SPUs as well as 240 TAUs and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon VII		295 Watts
GeForce RTX 4090		450 Watts
	Difference: 155 Watts (53%)

Memory Bandwidth

Performance-wise, the Radeon VII should theoretically be a bit better than the GeForce RTX 4090 overall. (explain)

Radeon VII		1048576 MB/sec
GeForce RTX 4090		1042432 MB/sec
	Difference: 6144 (1%)

Texel Rate

The GeForce RTX 4090 should be quite a bit (more or less 241%) better at texture filtering than the Radeon VII. (explain)

GeForce RTX 4090		1144320 Mtexels/sec
Radeon VII		336000 Mtexels/sec
	Difference: 808320 (241%)

Pixel Rate

The GeForce RTX 4090 will be a lot (more or less 339%) better at full screen anti-aliasing than the Radeon VII, and also will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce RTX 4090		393360 Mpixels/sec
Radeon VII		89600 Mpixels/sec
	Difference: 303760 (339%)

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 MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.