GeForce GTX 275 vs Radeon R7 260X

Intro

Compare those specifications to the Radeon R7 260X, which features a core clock speed of 1100 MHz and a GDDR5 memory frequency of 1625 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 260X		115 Watts
GeForce GTX 275		219 Watts
	Difference: 104 Watts (90%)

Memory Bandwidth

In theory, the GeForce GTX 275 will be 22% quicker than the Radeon R7 260X overall, due to its greater data rate. (explain)

GeForce GTX 275		127008 MB/sec
Radeon R7 260X		104000 MB/sec
	Difference: 23008 (22%)

Texel Rate

The Radeon R7 260X is a lot (approximately 22%) more effective at AF than the GeForce GTX 275. (explain)

Radeon R7 260X		61600 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 10960 (22%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 275 is superior to the Radeon R7 260X, though only just barely. (explain)

GeForce GTX 275		17724 Mpixels/sec
Radeon R7 260X		17600 Mpixels/sec
	Difference: 124 (1%)

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 largest amount of information (in units of megabytes per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics 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 most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.