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GeForce GT 220 GDDR3 vs GeForce GTX 660

Intro

The GeForce GT 220 GDDR3 uses a 40 nm design. nVidia has set the core speed at 625 MHz. The GDDR3 memory works at a frequency of 1012 MHz on this card. It features 48 SPUs as well as 16 Texture Address Units and 8 ROPs.

Compare all of that to the GeForce GTX 660, which uses a 28 nm design. nVidia has clocked the core speed at 980 MHz. The GDDR5 memory works at a speed of 1502 MHz on this model. It features 960 SPUs as well as 80 Texture Address Units and 24 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3 58 Watts
GeForce GTX 660 140 Watts
Difference: 82 Watts (141%)

Memory Bandwidth

Performance-wise, the GeForce GTX 660 should theoretically be quite a bit superior to the GeForce GT 220 GDDR3 in general. (explain)

GeForce GTX 660 144192 MB/sec
GeForce GT 220 GDDR3 32384 MB/sec
Difference: 111808 (345%)

Texel Rate

The GeForce GTX 660 will be quite a bit (more or less 684%) faster with regards to AF than the GeForce GT 220 GDDR3. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GT 220 GDDR3 10000 Mtexels/sec
Difference: 68400 (684%)

Pixel Rate

The GeForce GTX 660 is much (more or less 370%) better at FSAA than the GeForce GT 220 GDDR3, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce GT 220 GDDR3 5000 Mpixels/sec
Difference: 18520 (370%)

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

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GeForce GT 220 GDDR3

Amazon.com

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GeForce GTX 660

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GT 220 GDDR3 GeForce GTX 660
Manufacturer nVidia nVidia
Year October 2009 September 2012
Code Name GT216 GK106
Memory 512 MB 2048 MB
Core Speed 625 MHz 980 MHz
Memory Speed 2024 MHz 6008 MHz
Power (Max TDP) 58 watts 140 watts
Bandwidth 32384 MB/sec 144192 MB/sec
Texel Rate 10000 Mtexels/sec 78400 Mtexels/sec
Pixel Rate 5000 Mpixels/sec 23520 Mpixels/sec
Unified Shaders 48 960
Texture Mapping Units 16 80
Render Output Units 8 24
Bus Type GDDR3 GDDR5
Bus Width 128-bit 192-bit
Fab Process 40 nm 28 nm
Transistors 486 million 2540 million
Bus PCIe 2.0 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.0
OpenGL Version OpenGL 3.2 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out 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 filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GT 220 GDDR3

Amazon.com

Check prices at:

GeForce GTX 660

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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