GeForce GTX 280 vs Radeon R7 240

Intro

Compare those specifications to the Radeon R7 240, which features GPU clock speed of 730 MHz, and 2048 MB of DDR3 memory running at 900 MHz through a 128-bit bus. It also features 320 SPUs, 20 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GTX 280		236 Watts
	Difference: 206 Watts (687%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 280 should theoretically be much better than the Radeon R7 240 overall. (explain)

GeForce GTX 280		141696 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 112896 (392%)

Texel Rate

The GeForce GTX 280 is much (about 230%) better at anisotropic filtering than the Radeon R7 240. (explain)

GeForce GTX 280		48160 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 33560 (230%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 280 is a better choice, by far. (explain)

GeForce GTX 280		19264 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 13424 (230%)

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 information (measured in MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka 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 of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.