GeForce GTX 870M vs Radeon RX 6500 XT

Intro

Compare that to the Radeon RX 6500 XT, which comes with a core clock speed of 2200 MHz and a GDDR6 memory speed of 2250 MHz. It also makes use of a 64-bit memory bus, and makes use of a 6 nm design. It is made up of 1024 SPUs, 64 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
GeForce GTX 870M		110 Watts
	Difference: 3 Watts (3%)

Memory Bandwidth

The Radeon RX 6500 XT, in theory, should perform quite a bit faster than the GeForce GTX 870M overall. (explain)

Radeon RX 6500 XT		147456 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 51456 (54%)

Texel Rate

The Radeon RX 6500 XT should be much (more or less 34%) more effective at texture filtering than the GeForce GTX 870M. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
GeForce GTX 870M		105392 Mtexels/sec
	Difference: 35408 (34%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 6500 XT is superior to the GeForce GTX 870M, by a large margin. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 47816 (212%)

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 data (counted in MB per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.