GeForce GTX 980 Ti vs Radeon R9 M270X

Intro

Compare all of that to the Radeon R9 M270X, which comes with a core clock frequency of 725 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 features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 980 Ti should perform much faster than the Radeon R9 M270X overall. (explain)

GeForce GTX 980 Ti		336000 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 264000 (367%)

Texel Rate

The GeForce GTX 980 Ti will be much (about 507%) better at texture filtering than the Radeon R9 M270X. (explain)

GeForce GTX 980 Ti		176000 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 147000 (507%)

Pixel Rate

The GeForce GTX 980 Ti should be quite a bit (more or less 728%) more effective at FSAA than the Radeon R9 M270X, and also able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 980 Ti		96000 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 84400 (728%)

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 (in units of MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.