GeForce GT 220 GDDR3 vs Radeon R7 240

Intro

Compare those specifications to the Radeon R7 240, which has clock speeds of 730 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs along with 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 GT 220 GDDR3		58 Watts
	Difference: 28 Watts (93%)

Memory Bandwidth

The GeForce GT 220 GDDR3, in theory, should perform a little bit faster than the Radeon R7 240 overall. (explain)

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

Texel Rate

The Radeon R7 240 will be a lot (approximately 46%) better at anisotropic 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 will be a little bit (approximately 17%) better at FSAA than the GeForce GT 220 GDDR3, and also will be capable of handling higher resolutions without slowing down too much. (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 maximum amount of information (counted in megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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.