GeForce GT 220 GDDR3 vs GeForce GTX 650 Ti

Intro

Compare those specs to the GeForce GTX 650 Ti, which uses a 28 nm design. nVidia has clocked the core frequency at 928 MHz. The GDDR5 RAM is set to run at a frequency of 1350 MHz on this particular model. It features 768 SPUs along with 64 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 52 Watts (90%)

Memory Bandwidth

Performance-wise, the GeForce GTX 650 Ti should theoretically be much better than the GeForce GT 220 GDDR3 overall. (explain)

GeForce GTX 650 Ti		86400 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 54016 (167%)

Texel Rate

The GeForce GTX 650 Ti is quite a bit (about 494%) faster with regards to anisotropic filtering than the GeForce GT 220 GDDR3. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 49392 (494%)

Pixel Rate

The GeForce GTX 650 Ti will be much (approximately 197%) faster with regards to anti-aliasing than the GeForce GT 220 GDDR3, and also will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 9848 (197%)

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 megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 are applied in one second. This figure 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.