GeForce GT 220 GDDR3 vs GeForce GTX 460

Intro

Compare those specifications to the GeForce GTX 460, which has clock speeds of 675 MHz on the GPU, and 900 MHz on the 768 MB of GDDR5 memory. It features 336 SPUs along with 56 TAUs and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GTX 460		150 Watts
	Difference: 92 Watts (159%)

Memory Bandwidth

The GeForce GTX 460 should in theory be much faster than the GeForce GT 220 GDDR3 overall. (explain)

GeForce GTX 460		86400 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 54016 (167%)

Texel Rate

The GeForce GTX 460 should be much (more or less 278%) faster with regards to AF than the GeForce GT 220 GDDR3. (explain)

GeForce GTX 460		37800 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 27800 (278%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 460 is the winner, by a large margin. (explain)

GeForce GTX 460		16200 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 11200 (224%)

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 megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.