Radeon HD 7970 vs Radeon RX 6600

Intro

Compare all that to the Radeon RX 6600, which features a clock frequency of 1626 MHz and a GDDR6 memory speed of 1750 MHz. It also uses a 128-bit memory bus, and uses a 7 nm design. It is made up of 1792 SPUs, 112 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600		132 Watts
Radeon HD 7970		250 Watts
	Difference: 118 Watts (89%)

Memory Bandwidth

Theoretically, the Radeon HD 7970 should perform a small bit faster than the Radeon RX 6600 in general. (explain)

Radeon HD 7970		264000 MB/sec
Radeon RX 6600		229376 MB/sec
	Difference: 34624 (15%)

Texel Rate

The Radeon RX 6600 is a lot (about 54%) more effective at texture filtering than the Radeon HD 7970. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon HD 7970		118400 Mtexels/sec
	Difference: 63712 (54%)

Pixel Rate

The Radeon RX 6600 will be much (about 252%) more effective at FSAA than the Radeon HD 7970, and also will be capable of handling higher resolutions more effectively. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon HD 7970		29600 Mpixels/sec
	Difference: 74464 (252%)

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 max amount of information (in units of MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

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