GeForce RTX 4080 vs Radeon VII

Intro

Compare those specs to the Radeon VII, which has GPU clock speed of 1400 MHz, and 16384 MB of HBM2 memory set to run at 1000 MHz through a 4096-bit bus. It also is made up of 3840 Stream Processors, 240 Texture Address Units, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon VII		295 Watts
GeForce RTX 4080		320 Watts
	Difference: 25 Watts (8%)

Memory Bandwidth

Theoretically speaking, the Radeon VII should perform quite a bit faster than the GeForce RTX 4080 in general. (explain)

Radeon VII		1048576 MB/sec
GeForce RTX 4080		734003 MB/sec
	Difference: 314573 (43%)

Texel Rate

The GeForce RTX 4080 will be much (more or less 100%) more effective at AF than the Radeon VII. (explain)

GeForce RTX 4080		670320 Mtexels/sec
Radeon VII		336000 Mtexels/sec
	Difference: 334320 (100%)

Pixel Rate

The GeForce RTX 4080 is a lot (approximately 176%) better at anti-aliasing than the Radeon VII, and also capable of handling higher resolutions without slowing down too much. (explain)

GeForce RTX 4080		246960 Mpixels/sec
Radeon VII		89600 Mpixels/sec
	Difference: 157360 (176%)

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 largest amount of information (measured in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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