GeForce GTX 275 vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which comes with GPU core speed of 730 MHz, and 2048 MB of DDR3 memory running at 900 MHz through a 128-bit bus. It also is made up of 320 SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GTX 275		219 Watts
	Difference: 189 Watts (630%)

Memory Bandwidth

The GeForce GTX 275 should theoretically perform quite a bit faster than the Radeon R7 240 in general. (explain)

GeForce GTX 275		127008 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 98208 (341%)

Texel Rate

The GeForce GTX 275 should be a lot (approximately 247%) more effective at anisotropic filtering than the Radeon R7 240. (explain)

GeForce GTX 275		50640 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 36040 (247%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 275 is a better choice, by a large margin. (explain)

GeForce GTX 275		17724 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 11884 (203%)

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 (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.