GeForce GT 220 GDDR3 vs Geforce GTX 770

Intro

Compare all of that to the Geforce GTX 770, which comes with clock speeds of 1046 MHz on the GPU, and 1753 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
Geforce GTX 770		230 Watts
	Difference: 172 Watts (297%)

Memory Bandwidth

The Geforce GTX 770 should in theory perform much faster than the GeForce GT 220 GDDR3 overall. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 192000 (593%)

Texel Rate

The Geforce GTX 770 should be a lot (about 1239%) more effective at AF than the GeForce GT 220 GDDR3. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 123888 (1239%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 770 is the winner, and very much so. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 28472 (569%)

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 (counted in MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics 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 most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel 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 reach the maximum fill rate.