GeForce GTX 970M vs Radeon RX 580

Intro

Compare all that to the Radeon RX 580, which comes with GPU core speed of 1257 MHz, and 8192 MB of GDDR5 memory set to run at 2000 MHz through a 256-bit bus. It also is comprised of 2304 SPUs, 144 Texture Address Units, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX 580		13630 points
GeForce GTX 970M		7520 points
	Difference: 6110 (81%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M		75 Watts
Radeon RX 580		185 Watts
	Difference: 110 Watts (147%)

Memory Bandwidth

In theory, the Radeon RX 580 will be 173% quicker than the GeForce GTX 970M overall, due to its higher bandwidth. (explain)

Radeon RX 580		262144 MB/sec
GeForce GTX 970M		96000 MB/sec
	Difference: 166144 (173%)

Texel Rate

The Radeon RX 580 will be a lot (approximately 145%) more effective at AF than the GeForce GTX 970M. (explain)

Radeon RX 580		181008 Mtexels/sec
GeForce GTX 970M		73920 Mtexels/sec
	Difference: 107088 (145%)

Pixel Rate

The GeForce GTX 970M will be a bit (approximately 10%) more effective at FSAA than the Radeon RX 580, and able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 970M		44352 Mpixels/sec
Radeon RX 580		40224 Mpixels/sec
	Difference: 4128 (10%)

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 (counted in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.