GeForce GT 220 GDDR3 vs Radeon R7 240

Intro

Compare all that to the Radeon R7 240, which features GPU core speed of 730 MHz, and 2048 MB of DDR3 memory set to run at 900 MHz through a 128-bit bus. It also is made up of 320 SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GT 220 GDDR3		58 Watts
	Difference: 28 Watts (93%)

Memory Bandwidth

Theoretically, the GeForce GT 220 GDDR3 should be a bit faster than the Radeon R7 240 in general. (explain)

GeForce GT 220 GDDR3		32384 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 3584 (12%)

Texel Rate

The Radeon R7 240 is quite a bit (about 46%) better at texture filtering than the GeForce GT 220 GDDR3. (explain)

Radeon R7 240		14600 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 4600 (46%)

Pixel Rate

The Radeon R7 240 is a little bit (approximately 17%) more effective at AA than the GeForce GT 220 GDDR3, and also will be capable of handling higher resolutions more effectively. (explain)

Radeon R7 240		5840 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 840 (17%)

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 (counted in MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.