Radeon HD 6790 vs Radeon RX 6700 XT

Intro

Compare those specifications to the Radeon RX 6700 XT, which makes use of a 7 nm design. AMD has clocked the core frequency at 2321 MHz. The GDDR6 memory works at a speed of 2000 MHz on this card. It features 2560 SPUs along with 160 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790		150 Watts
Radeon RX 6700 XT		230 Watts
	Difference: 80 Watts (53%)

Memory Bandwidth

As far as performance goes, the Radeon RX 6700 XT should theoretically be much superior to the Radeon HD 6790 overall. (explain)

Radeon RX 6700 XT		393216 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 258816 (193%)

Texel Rate

The Radeon RX 6700 XT should be much (more or less 1005%) better at AF than the Radeon HD 6790. (explain)

Radeon RX 6700 XT		371360 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 337760 (1005%)

Pixel Rate

The Radeon RX 6700 XT should be a lot (approximately 1005%) faster with regards to anti-aliasing than the Radeon HD 6790, and also should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon RX 6700 XT		148544 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 135104 (1005%)

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 megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.