Radeon RX 7900 XT vs Radeon VII

Intro

Compare all that to the Radeon VII, which features a clock speed of 1400 MHz and a HBM2 memory speed of 1000 MHz. It also features a 4096-bit bus, and uses a 7 nm design. It is made up of 3840 SPUs, 240 Texture Address Units, and 64 Raster Operation Units.

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 speaking, the Radeon VII should perform much 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 much (about 50%) faster with regards to anisotropic filtering than the Radeon VII. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 7900 XT is the winner, by a large margin. (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 largest amount of information (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.