GeForce GTX 970M vs Radeon R9 M265X

Intro

Compare that to the Radeon R9 M265X, which features a clock frequency of 575 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 970M is 33% faster than the Radeon R9 M265X overall, because of its greater bandwidth. (explain)

GeForce GTX 970M		96000 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 24000 (33%)

Texel Rate

The GeForce GTX 970M should be quite a bit (more or less 221%) faster with regards to texture filtering than the Radeon R9 M265X. (explain)

GeForce GTX 970M		73920 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 50920 (221%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 970M is superior to the Radeon R9 M265X, by a large margin. (explain)

GeForce GTX 970M		44352 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 35152 (382%)

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 max amount of data (counted in MB per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it 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 anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock 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 output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.