Radeon RX 7900 XTX vs Radeon VII

Intro

Compare all that to the Radeon VII, which has GPU core speed of 1400 MHz, and 16384 MB of HBM2 memory set to run at 1000 MHz through a 4096-bit bus. It also is comprised of 3840 SPUs, 240 TAUs, and 64 Raster Operation Units.

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

Theoretically speaking, the Radeon VII should be a small bit faster 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 should be quite a bit (approximately 112%) better at anisotropic filtering than the Radeon VII. (explain)

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

Pixel Rate

The Radeon RX 7900 XTX is a lot (about 298%) more effective at AA than the Radeon VII, and will be capable of handling higher resolutions without losing too much performance. (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: Bandwidth is the max amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

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