Radeon HD 4870 X2 vs Radeon RX 6600

Intro

Compare all of that to the Radeon RX 6600, which comes with a clock speed of 1626 MHz and a GDDR6 memory speed of 1750 MHz. It also uses a 128-bit bus, and makes use of a 7 nm design. It 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 4870 X2		350 Watts
	Difference: 218 Watts (165%)

Memory Bandwidth

Theoretically, the Radeon HD 4870 X2 should be a bit faster than the Radeon RX 6600 in general. (explain)

Radeon HD 4870 X2		230400 MB/sec
Radeon RX 6600		229376 MB/sec
	Difference: 1024 (0%)

Texel Rate

The Radeon RX 6600 should be much (more or less 204%) faster with regards to AF than the Radeon HD 4870 X2. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon HD 4870 X2		60000 Mtexels/sec
	Difference: 122112 (204%)

Pixel Rate

The Radeon RX 6600 will be a lot (approximately 334%) more effective at AA than the Radeon HD 4870 X2, and also able to handle higher resolutions while still performing well. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon HD 4870 X2		24000 Mpixels/sec
	Difference: 80064 (334%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.