Geforce GTX 760 vs Radeon R9 M390X

Intro

Compare those specs to the Radeon R9 M390X, which makes use of a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 memory works at a speed of 1250 MHz on this particular card. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
Geforce GTX 760		170 Watts
	Difference: 45 Watts (36%)

Memory Bandwidth

In theory, the Geforce GTX 760 is 20% faster than the Radeon R9 M390X in general, due to its higher data rate. (explain)

Geforce GTX 760		192256 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 32256 (20%)

Texel Rate

The Geforce GTX 760 is a little bit (approximately 2%) more effective at anisotropic filtering than the Radeon R9 M390X. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon R9 M390X		92544 Mtexels/sec
	Difference: 1536 (2%)

Pixel Rate

The Geforce GTX 760 should be a lot (approximately 36%) faster with regards to anti-aliasing than the Radeon R9 M390X, and capable of handling higher resolutions without losing too much performance. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 8224 (36%)

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 (counted 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. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per 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 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 write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. 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 also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.