GeForce GTX 750 vs Radeon R9 M390X

Intro

Compare those specs to the Radeon R9 M390X, which has a core clock frequency of 723 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon R9 M390X		125 Watts
	Difference: 70 Watts (127%)

Memory Bandwidth

The Radeon R9 M390X should in theory perform a lot faster than the GeForce GTX 750 overall. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 80000 (100%)

Texel Rate

The Radeon R9 M390X will be a lot (more or less 184%) better at AF than the GeForce GTX 750. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 59904 (184%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M390X is a better choice, and very much so. (explain)

Radeon R9 M390X		23136 Mpixels/sec
GeForce GTX 750		16320 Mpixels/sec
	Difference: 6816 (42%)

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 information (counted in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.