GeForce GTX 870M vs Radeon RX 5500

Intro

Compare that to the Radeon RX 5500, which features a core clock speed of 1670 MHz and a GDDR6 memory speed of 1750 MHz. It also makes use of a 128-bit bus, and uses a 7 nm design. It is made up of 1408 SPUs, 88 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
Radeon RX 5500		150 Watts
	Difference: 40 Watts (36%)

Memory Bandwidth

In theory, the Radeon RX 5500 will be 139% faster than the GeForce GTX 870M in general, because of its greater data rate. (explain)

Radeon RX 5500		229376 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 133376 (139%)

Texel Rate

The Radeon RX 5500 will be quite a bit (about 39%) more effective at anisotropic filtering than the GeForce GTX 870M. (explain)

Radeon RX 5500		146960 Mtexels/sec
GeForce GTX 870M		105392 Mtexels/sec
	Difference: 41568 (39%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 5500 is the winner, by a large margin. (explain)

Radeon RX 5500		53440 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 30856 (137%)

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 largest amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.