Radeon RX 7900 XTX vs Radeon VII

Intro

Compare all that to the Radeon VII, which features a core clock speed of 1400 MHz and a HBM2 memory frequency of 1000 MHz. It also uses a 4096-bit memory bus, and makes use of a 7 nm design. It is made up of 3840 SPUs, 240 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon VII		295 Watts
Radeon RX 7900 XTX		355 Watts
	Difference: 60 Watts (20%)

Memory Bandwidth

As far as performance goes, the Radeon VII should theoretically be a little bit better than the Radeon RX 7900 XTX in general. (explain)

Radeon VII		1048576 MB/sec
Radeon RX 7900 XTX		983040 MB/sec
	Difference: 65536 (7%)

Texel Rate

The Radeon RX 7900 XTX will be much (approximately 112%) more effective at texture filtering than the Radeon VII. (explain)

Radeon RX 7900 XTX		712320 Mtexels/sec
Radeon VII		336000 Mtexels/sec
	Difference: 376320 (112%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 7900 XTX is the winner, by a large margin. (explain)

Radeon RX 7900 XTX		356160 Mpixels/sec
Radeon VII		89600 Mpixels/sec
	Difference: 266560 (298%)

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 (measured in MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units of the card by the core 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 a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.