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GeForce GT 320 vs Geforce GTX 680

Intro

The GeForce GT 320 has a clock frequency of 540 MHz and a GDDR3 memory frequency of 790 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is made up of 72 SPUs, 24 TAUs, and 8 Raster Operation Units.

Compare all that to the Geforce GTX 680, which makes use of a 28 nm design. nVidia has set the core frequency at 1006 MHz. The GDDR5 memory works at a frequency of 1502 MHz on this specific model. 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 320 43 Watts
Geforce GTX 680 195 Watts
Difference: 152 Watts (353%)

Memory Bandwidth

Performance-wise, the Geforce GTX 680 should theoretically be a lot better than the GeForce GT 320 overall. (explain)

Geforce GTX 680 192256 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 166976 (661%)

Texel Rate

The Geforce GTX 680 should be a lot (more or less 894%) more effective at texture filtering than the GeForce GT 320. (explain)

Geforce GTX 680 128768 Mtexels/sec
GeForce GT 320 12960 Mtexels/sec
Difference: 115808 (894%)

Pixel Rate

If running with high levels of AA is important to you, then the Geforce GTX 680 is a better choice, by a large margin. (explain)

Geforce GTX 680 32192 Mpixels/sec
GeForce GT 320 4320 Mpixels/sec
Difference: 27872 (645%)

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 320

Amazon.com

Check prices at:

Geforce GTX 680

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.

Specifications

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Model GeForce GT 320 Geforce GTX 680
Manufacturer nVidia nVidia
Year February 2010 March 2012
Code Name GT215 GK104
Memory 1024 MB 2048 MB
Core Speed 540 MHz 1006 MHz
Memory Speed 1580 MHz 6008 MHz
Power (Max TDP) 43 watts 195 watts
Bandwidth 25280 MB/sec 192256 MB/sec
Texel Rate 12960 Mtexels/sec 128768 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 32192 Mpixels/sec
Unified Shaders 72 1536
Texture Mapping Units 24 128
Render Output Units 8 32
Bus Type GDDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 727 million 3540 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.0
OpenGL Version OpenGL 3.3 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GT 320

Amazon.com

Check prices at:

Geforce GTX 680

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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