GeForce GTX 750 vs Radeon R9 M275X

Intro

Compare those specifications to the Radeon R9 M275X, which features core speeds of 900 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
GeForce GTX 750		55 Watts
	Difference: 5 Watts (10%)

Memory Bandwidth

In theory, the GeForce GTX 750 will be 11% quicker than the Radeon R9 M275X overall, because of its higher data rate. (explain)

GeForce GTX 750		80000 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 8000 (11%)

Texel Rate

The Radeon R9 M275X should be a bit (approximately 10%) better at anisotropic filtering than the GeForce GTX 750. (explain)

Radeon R9 M275X		36000 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 3360 (10%)

Pixel Rate

The GeForce GTX 750 should be a small bit (more or less 13%) faster with regards to anti-aliasing than the Radeon R9 M275X, and also will be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 750		16320 Mpixels/sec
Radeon R9 M275X		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: Bandwidth is the max amount of data (in units of MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 applied per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.