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GeForce 9500 GT 512MB GDDR3 vs GeForce GT 320

Intro

The GeForce 9500 GT 512MB GDDR3 comes with a core clock frequency of 550 MHz and a GDDR3 memory frequency of 800 MHz. It also uses a 128-bit memory bus, and makes use of a 55 nm design. It is comprised of 32 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare all that to the GeForce GT 320, which comes with core speeds of 540 MHz on the GPU, and 790 MHz on the 1024 MB of GDDR3 memory. It features 72 SPUs as well as 24 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320 43 Watts
GeForce 9500 GT 512MB GDDR3 50 Watts
Difference: 7 Watts (16%)

Memory Bandwidth

In theory, the GeForce 9500 GT 512MB GDDR3 will be 1% faster than the GeForce GT 320 in general, because of its higher data rate. (explain)

GeForce 9500 GT 512MB GDDR3 25600 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 320 (1%)

Texel Rate

The GeForce GT 320 is much (about 47%) better at anisotropic filtering than the GeForce 9500 GT 512MB GDDR3. (explain)

GeForce GT 320 12960 Mtexels/sec
GeForce 9500 GT 512MB GDDR3 8800 Mtexels/sec
Difference: 4160 (47%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 9500 GT 512MB GDDR3 is the winner, but only just. (explain)

GeForce 9500 GT 512MB GDDR3 4400 Mpixels/sec
GeForce GT 320 4320 Mpixels/sec
Difference: 80 (2%)

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 9500 GT 512MB GDDR3

Amazon.com

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GeForce GT 320

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 9500 GT 512MB GDDR3 GeForce GT 320
Manufacturer nVidia nVidia
Year July 2008 February 2010
Code Name G96b GT215
Memory 512 MB 1024 MB
Core Speed 550 MHz 540 MHz
Memory Speed 1600 MHz 1580 MHz
Power (Max TDP) 50 watts 43 watts
Bandwidth 25600 MB/sec 25280 MB/sec
Texel Rate 8800 Mtexels/sec 12960 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 4320 Mpixels/sec
Unified Shaders 32 72
Texture Mapping Units 16 24
Render Output Units 8 8
Bus Type GDDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 40 nm
Transistors 314 million 727 million
Bus PCIe x16 2.0, PCI PCIe x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

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

Display Prices

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GeForce 9500 GT 512MB GDDR3

Amazon.com

Check prices at:

GeForce GT 320

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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