GeForce GT 240 GDDR5 1GB vs Radeon R7 240

Intro

Compare all that to the Radeon R7 240, which makes use of a 28 nm design. AMD has clocked the core speed at 730 MHz. The DDR3 memory is set to run at a frequency of 900 MHz on this card. It features 320 SPUs as well as 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GT 240 GDDR5 1GB		70 Watts
	Difference: 40 Watts (133%)

Memory Bandwidth

Performance-wise, the GeForce GT 240 GDDR5 1GB should in theory be much better than the Radeon R7 240 in general. (explain)

GeForce GT 240 GDDR5 1GB		54400 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 25600 (89%)

Texel Rate

The GeForce GT 240 GDDR5 1GB should be a lot (more or less 21%) better at anisotropic filtering than the Radeon R7 240. (explain)

GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 3000 (21%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R7 240 is a better choice, and very much so. (explain)

Radeon R7 240		5840 Mpixels/sec
GeForce GT 240 GDDR5 1GB		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 largest amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed 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 better the texel rate, the better the graphics 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 amount of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to 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 ability to reach the maximum fill rate.