GeForce GT 220 GDDR3 vs Geforce GTX 770

Intro

Compare those specifications to the Geforce GTX 770, which makes use of a 28 nm design. nVidia has set the core frequency at 1046 MHz. The GDDR5 RAM runs at a speed of 1753 MHz on this particular model. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

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 theoretically perform a lot faster than the GeForce GT 220 GDDR3 in general. (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 much (more or less 1239%) better 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 lots of anti-aliasing is important to you, then the Geforce GTX 770 is superior to the GeForce GT 220 GDDR3, 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: Memory bandwidth is the max amount of data (measured in MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better 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 amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number 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 filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.