GeForce GT 240 GDDR5 vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which has a clock frequency of 900 MHz and a GDDR5 memory speed of 1375 MHz. It also features 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)

GeForce GT 240 GDDR5		70 Watts
Radeon R9 M280X		75 Watts
	Difference: 5 Watts (7%)

Memory Bandwidth

In theory, the Radeon R9 M280X will be 62% faster than the GeForce GT 240 GDDR5 in general, because of its greater data rate. (explain)

Radeon R9 M280X		88000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 33600 (62%)

Texel Rate

The Radeon R9 M280X will be a lot (more or less 186%) better at AF than the GeForce GT 240 GDDR5. (explain)

Radeon R9 M280X		50400 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 32800 (186%)

Pixel Rate

The Radeon R9 M280X should be quite a bit (more or less 227%) better at AA than the GeForce GT 240 GDDR5, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 M280X		14400 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 10000 (227%)

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 megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's 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 fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.