Radeon HD 7870 vs Radeon RX 6600

Intro

Compare those specifications to the Radeon RX 6600, which has clock speeds of 1626 MHz on the GPU, and 1750 MHz on the 8192 MB of GDDR6 memory. It features 1792 SPUs along with 112 Texture Address Units and 64 Rasterization Operator 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

Performance-wise, the Radeon RX 6600 should in theory be a lot better than the Radeon HD 7870 overall. (explain)

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

Texel Rate

The Radeon RX 6600 will be quite a bit (about 128%) better at texture filtering 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 a high screen resolution is important to you, then the Radeon RX 6600 is superior to the Radeon HD 7870, by a large margin. (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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high 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 clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.