GeForce GT 240 GDDR5 vs Radeon R7 240

Intro

Compare that to the Radeon R7 240, which features core speeds of 730 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs as well as 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 40 Watts (133%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 240 GDDR5 should be much faster than the Radeon R7 240 in general. (explain)

GeForce GT 240 GDDR5		54400 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 25600 (89%)

Texel Rate

The GeForce GT 240 GDDR5 is quite a bit (more or less 21%) better at anisotropic filtering than the Radeon R7 240. (explain)

GeForce GT 240 GDDR5		17600 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 3000 (21%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R7 240 is the winner, by a large margin. (explain)

Radeon R7 240		5840 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 1440 (33%)

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 (counted in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, 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 is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.