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GeForce 9500 GT 1GB GDDR3 vs GeForce GT 320

Intro

The GeForce 9500 GT 1GB GDDR3 has a clock frequency of 550 MHz and a GDDR3 memory frequency of 800 MHz. It also uses a 128-bit bus, and uses 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 features a core clock frequency of 540 MHz and a GDDR3 memory speed of 790 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It features 72 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320 43 Watts
GeForce 9500 GT 1GB GDDR3 50 Watts
Difference: 7 Watts (16%)

Memory Bandwidth

Performance-wise, the GeForce 9500 GT 1GB GDDR3 should in theory be just a bit better than the GeForce GT 320 in general. (explain)

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

Texel Rate

The GeForce GT 320 is quite a bit (approximately 47%) faster with regards to AF than the GeForce 9500 GT 1GB GDDR3. (explain)

GeForce GT 320 12960 Mtexels/sec
GeForce 9500 GT 1GB GDDR3 8800 Mtexels/sec
Difference: 4160 (47%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 9500 GT 1GB GDDR3 is superior to the GeForce GT 320, but it probably won't make a huge difference. (explain)

GeForce 9500 GT 1GB 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 1GB GDDR3

Amazon.com

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GeForce GT 320

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 9500 GT 1GB GDDR3 GeForce GT 320
Manufacturer nVidia nVidia
Year July 2008 February 2010
Code Name G96b GT215
Memory 1024 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 max amount of information (in units of megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 are processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better 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 most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines 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 output rate is also dependant on lots of other factors, most notably 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 1GB 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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