GeForce GTX 970M vs Radeon RX 470 4GB

Intro

Compare all that to the Radeon RX 470 4GB, which comes with clock speeds of 926 MHz on the GPU, and 1650 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M		75 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 45 Watts (60%)

Memory Bandwidth

The Radeon RX 470 4GB, in theory, should be quite a bit faster than the GeForce GTX 970M overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
GeForce GTX 970M		96000 MB/sec
	Difference: 115200 (120%)

Texel Rate

The Radeon RX 470 4GB is a lot (more or less 60%) better at texture filtering than the GeForce GTX 970M. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
GeForce GTX 970M		73920 Mtexels/sec
	Difference: 44608 (60%)

Pixel Rate

The GeForce GTX 970M is quite a bit (about 50%) more effective at FSAA than the Radeon RX 470 4GB, and able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 970M		44352 Mpixels/sec
Radeon RX 470 4GB		29632 Mpixels/sec
	Difference: 14720 (50%)

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: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at 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 the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock 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 rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.