GeForce GTX 750 Ti vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which uses a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 RAM runs at a frequency of 1375 MHz on this model. It features 896 SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
Radeon R9 M280X		75 Watts
	Difference: 15 Watts (25%)

Memory Bandwidth

The Radeon R9 M280X should theoretically be a bit faster than the GeForce GTX 750 Ti in general. (explain)

Radeon R9 M280X		88000 MB/sec
GeForce GTX 750 Ti		86400 MB/sec
	Difference: 1600 (2%)

Texel Rate

The Radeon R9 M280X is a lot (approximately 24%) more effective at texture filtering than the GeForce GTX 750 Ti. (explain)

Radeon R9 M280X		50400 Mtexels/sec
GeForce GTX 750 Ti		40800 Mtexels/sec
	Difference: 9600 (24%)

Pixel Rate

The GeForce GTX 750 Ti should be a bit (more or less 13%) better at FSAA than the Radeon R9 M280X, and able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 750 Ti		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 largest amount of data (measured in MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high 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 by the core clock 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines 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 is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.