GeForce GTX 275 vs Radeon R7 240

Intro

Compare those specifications to the Radeon R7 240, which uses a 28 nm design. AMD has clocked the core speed at 730 MHz. The DDR3 RAM runs at a speed of 900 MHz on this particular model. It features 320 SPUs as well as 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

Performance-wise, the GeForce GTX 275 should theoretically be quite a bit better than the Radeon R7 240 overall. (explain)

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

Texel Rate

The GeForce GTX 275 will be a lot (more or less 247%) more effective at AF than the Radeon R7 240. (explain)

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

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 275 is a better choice, and very much so. (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: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.