GeForce GTX 750 vs Radeon R9 M280X

Intro

Compare all that to the Radeon R9 M280X, which makes use of a 28 nm design. AMD has set the core frequency at 900 MHz. The GDDR5 RAM runs at a frequency of 1375 MHz on this particular model. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon R9 M280X		75 Watts
	Difference: 20 Watts (36%)

Memory Bandwidth

In theory, the Radeon R9 M280X should be a small bit faster than the GeForce GTX 750 overall. (explain)

Radeon R9 M280X		88000 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 8000 (10%)

Texel Rate

The Radeon R9 M280X will be much (more or less 54%) faster with regards to anisotropic filtering than the GeForce GTX 750. (explain)

Radeon R9 M280X		50400 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 17760 (54%)

Pixel Rate

The GeForce GTX 750 is a bit (about 13%) faster with regards to FSAA than the Radeon R9 M280X, and capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 750		16320 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 1920 (13%)

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 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 card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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