Radeon HD 4870 X2 vs Radeon RX 6500 XT

Intro

Compare those specifications to the Radeon RX 6500 XT, which makes use of a 6 nm design. AMD has set the core speed at 2200 MHz. The GDDR6 RAM runs at a speed of 2250 MHz on this card. It features 1024 SPUs as well as 64 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon HD 4870 X2		350 Watts
	Difference: 243 Watts (227%)

Memory Bandwidth

Performance-wise, the Radeon HD 4870 X2 should in theory be quite a bit better than the Radeon RX 6500 XT overall. (explain)

Radeon HD 4870 X2		230400 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 82944 (56%)

Texel Rate

The Radeon RX 6500 XT will be a lot (approximately 135%) more effective at texture filtering than the Radeon HD 4870 X2. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon HD 4870 X2		60000 Mtexels/sec
	Difference: 80800 (135%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6500 XT is a better choice, by far. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon HD 4870 X2		24000 Mpixels/sec
	Difference: 46400 (193%)

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: Bandwidth is the max amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, 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 number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many 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.