GeForce GT 220 GDDR3 vs Radeon R7 240

Intro

Compare all 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 along with 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 220 GDDR3		58 Watts
	Difference: 28 Watts (93%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 220 GDDR3 should perform a little 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 much (more or less 46%) faster with regards to AF 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

If using a high screen resolution is important to you, then the Radeon R7 240 is a better choice, not by a very large margin though. (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: Bandwidth is the max amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video 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 the video card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.