Radeon RX 6700 XT vs Radeon RX Vega 64

Intro

Compare all of that to the Radeon RX Vega 64, which comes with 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 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 6700 XT		230 Watts
Radeon RX Vega 64		295 Watts
	Difference: 65 Watts (28%)

Memory Bandwidth

As far as performance goes, the Radeon RX Vega 64 should theoretically be quite a bit better than the Radeon RX 6700 XT in general. (explain)

Radeon RX Vega 64		495411 MB/sec
Radeon RX 6700 XT		393216 MB/sec
	Difference: 102195 (26%)

Texel Rate

The Radeon RX 6700 XT should be a bit (about 16%) better at AF than the Radeon RX Vega 64. (explain)

Radeon RX 6700 XT		371360 Mtexels/sec
Radeon RX Vega 64		319232 Mtexels/sec
	Difference: 52128 (16%)

Pixel Rate

The Radeon RX 6700 XT should be a lot (approximately 86%) more effective at FSAA than the Radeon RX Vega 64, and also will be capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 6700 XT		148544 Mpixels/sec
Radeon RX Vega 64		79808 Mpixels/sec
	Difference: 68736 (86%)

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 data (measured in MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed 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 calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.