Radeon HD 7870 vs Radeon RX 6600

Intro

Compare that to the Radeon RX 6600, which features GPU clock speed of 1626 MHz, and 8192 MB of GDDR6 memory running at 1750 MHz through a 128-bit bus. It also features 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 7870		175 Watts
	Difference: 43 Watts (33%)

Memory Bandwidth

The Radeon RX 6600, in theory, should perform quite a bit faster than the Radeon HD 7870 in general. (explain)

Radeon RX 6600		229376 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 75776 (49%)

Texel Rate

The Radeon RX 6600 is a lot (approximately 128%) faster with regards to AF than the Radeon HD 7870. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 102112 (128%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 6600 is superior to the Radeon HD 7870, and very much so. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon HD 7870		32000 Mpixels/sec
	Difference: 72064 (225%)

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 transferred over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics 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 number of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.