Radeon RX 7900 XT vs Radeon VII

Intro

Compare that to the Radeon VII, which makes use of a 7 nm design. AMD has set the core speed at 1400 MHz. The HBM2 RAM runs at a speed of 1000 MHz on this particular card. It features 3840 SPUs along with 240 Texture Address Units and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon VII		295 Watts
Radeon RX 7900 XT		300 Watts
	Difference: 5 Watts (2%)

Memory Bandwidth

Theoretically, the Radeon VII should be quite a bit faster than the Radeon RX 7900 XT overall. (explain)

Radeon VII		1048576 MB/sec
Radeon RX 7900 XT		819200 MB/sec
	Difference: 229376 (28%)

Texel Rate

The Radeon RX 7900 XT is a lot (about 50%) more effective at anisotropic filtering than the Radeon VII. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
Radeon VII		336000 Mtexels/sec
	Difference: 168000 (50%)

Pixel Rate

The Radeon RX 7900 XT is a lot (more or less 221%) more effective at full screen anti-aliasing than the Radeon VII, and should be able to handle higher screen resolutions better. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
Radeon VII		89600 Mpixels/sec
	Difference: 198400 (221%)

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 data (measured in megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

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