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GeForce GT 320 vs GeForce GTX 260

Intro

The GeForce GT 320 has a core clock speed of 540 MHz and a GDDR3 memory frequency of 790 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It features 72 SPUs, 24 TAUs, and 8 ROPs.

Compare those specifications to the GeForce GTX 260, which has GPU core speed of 576 MHz, and 896 MB of GDDR3 memory running at 999 MHz through a 448-bit bus. It also features 192 Stream Processors, 64 TAUs, and 28 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320 43 Watts
GeForce GTX 260 182 Watts
Difference: 139 Watts (323%)

Memory Bandwidth

In theory, the GeForce GTX 260 is 343% quicker than the GeForce GT 320 in general, due to its higher data rate. (explain)

GeForce GTX 260 111888 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 86608 (343%)

Texel Rate

The GeForce GTX 260 will be much (about 184%) faster with regards to texture filtering than the GeForce GT 320. (explain)

GeForce GTX 260 36864 Mtexels/sec
GeForce GT 320 12960 Mtexels/sec
Difference: 23904 (184%)

Pixel Rate

The GeForce GTX 260 will be quite a bit (about 273%) better at anti-aliasing than the GeForce GT 320, and should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 260 16128 Mpixels/sec
GeForce GT 320 4320 Mpixels/sec
Difference: 11808 (273%)

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

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GeForce GTX 260

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 320 GeForce GTX 260
Manufacturer nVidia nVidia
Year February 2010 June 16, 2008
Code Name GT215 G200
Memory 1024 MB 896 MB
Core Speed 540 MHz 576 MHz
Memory Speed 1580 MHz 1998 MHz
Power (Max TDP) 43 watts 182 watts
Bandwidth 25280 MB/sec 111888 MB/sec
Texel Rate 12960 Mtexels/sec 36864 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 16128 Mpixels/sec
Unified Shaders 72 192
Texture Mapping Units 24 64
Render Output Units 8 28
Bus Type GDDR3 GDDR3
Bus Width 128-bit 448-bit
Fab Process 40 nm 65 nm
Transistors 727 million 1400 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10.1 DirectX 10
OpenGL Version OpenGL 3.3 OpenGL 3.1

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units of the card 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core 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 fill rate also depends 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 320

Amazon.com

Check prices at:

GeForce GTX 260

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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