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GeForce GT 320 vs GeForce GTX 650

Intro

The GeForce GT 320 comes with a GPU clock speed of 540 MHz, and the 1024 MB of GDDR3 memory is set to run at 790 MHz through a 128-bit bus. It also features 72 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

Compare all of that to the GeForce GTX 650, which comes with core clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs along with 32 TAUs and 16 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 650 64 Watts
Difference: 21 Watts (49%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 should be 216% faster than the GeForce GT 320 overall, because of its greater data rate. (explain)

GeForce GTX 650 80000 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 54720 (216%)

Texel Rate

The GeForce GTX 650 is quite a bit (approximately 161%) better at anisotropic filtering than the GeForce GT 320. (explain)

GeForce GTX 650 33856 Mtexels/sec
GeForce GT 320 12960 Mtexels/sec
Difference: 20896 (161%)

Pixel Rate

The GeForce GTX 650 should be quite a bit (about 292%) faster with regards to AA than the GeForce GT 320, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce GT 320 4320 Mpixels/sec
Difference: 12608 (292%)

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 650

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

Display Specifications

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Model GeForce GT 320 GeForce GTX 650
Manufacturer nVidia nVidia
Year February 2010 September 2012
Code Name GT215 GK107
Memory 1024 MB 1024 MB
Core Speed 540 MHz 1058 MHz
Memory Speed 1580 MHz 5000 MHz
Power (Max TDP) 43 watts 64 watts
Bandwidth 25280 MB/sec 80000 MB/sec
Texel Rate 12960 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 72 384
Texture Mapping Units 24 32
Render Output Units 8 16
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 727 million 1300 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.0
OpenGL Version OpenGL 3.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses 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 AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 320

Amazon.com

Check prices at:

GeForce GTX 650

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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