Radeon RX 6950 XT vs Radeon RX Vega 64

Intro

Compare that to the Radeon RX Vega 64, which features a clock frequency of 1247 MHz and a HBM2 memory speed of 1890 MHz. It also uses a 2048-bit memory bus, and uses a 14 nm design. It is made up of 4096 SPUs, 256 Texture Address Units, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX Vega 64		295 Watts
Radeon RX 6950 XT		335 Watts
	Difference: 40 Watts (14%)

Memory Bandwidth

The Radeon RX 6950 XT should in theory be a little bit faster than the Radeon RX Vega 64 in general. (explain)

Radeon RX 6950 XT		589824 MB/sec
Radeon RX Vega 64		495411 MB/sec
	Difference: 94413 (19%)

Texel Rate

The Radeon RX 6950 XT is a lot (about 93%) better at texture filtering than the Radeon RX Vega 64. (explain)

Radeon RX 6950 XT		616000 Mtexels/sec
Radeon RX Vega 64		319232 Mtexels/sec
	Difference: 296768 (93%)

Pixel Rate

The Radeon RX 6950 XT will be quite a bit (approximately 209%) more effective at FSAA than the Radeon RX Vega 64, and also able to handle higher resolutions while still performing well. (explain)

Radeon RX 6950 XT		246400 Mpixels/sec
Radeon RX Vega 64		79808 Mpixels/sec
	Difference: 166592 (209%)

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 (counted in MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is calculated 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.