Radeon RX 6950 XT vs Radeon RX Vega 64

Intro

Compare those specifications to the Radeon RX Vega 64, which has a clock frequency of 1247 MHz and a HBM2 memory speed of 1890 MHz. It also features a 2048-bit bus, and makes use of a 14 nm design. It is comprised 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

Theoretically, the Radeon RX 6950 XT should perform 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 will be a lot (about 93%) faster with regards to AF 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 is quite a bit (more or less 209%) more effective at FSAA than the Radeon RX Vega 64, and also will be able to handle higher screen resolutions better. (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: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core 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 processed in a second.

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