GeForce GTX 970M vs Radeon R9 M270X

Intro

Compare those specs to the Radeon R9 M270X, which features a clock speed of 725 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit memory 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

The GeForce GTX 970M, in theory, should be a lot faster than the Radeon R9 M270X in general. (explain)

GeForce GTX 970M		96000 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 24000 (33%)

Texel Rate

The GeForce GTX 970M should be quite a bit (approximately 155%) more effective at AF than the Radeon R9 M270X. (explain)

GeForce GTX 970M		73920 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 44920 (155%)

Pixel Rate

The GeForce GTX 970M will be much (approximately 282%) more effective at FSAA than the Radeon R9 M270X, and also capable of handling higher resolutions more effectively. (explain)

GeForce GTX 970M		44352 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 32752 (282%)

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 across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of 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.