GeForce 9500 GT DDR2 vs GeForce GT 320

Intro

Compare that to the GeForce GT 320, which uses a 40 nm design. nVidia has set the core frequency at 540 MHz. The GDDR3 RAM works at a speed of 790 MHz on this model. It features 72 SPUs along with 24 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce 9500 GT DDR2		50 Watts
	Difference: 7 Watts (16%)

Memory Bandwidth

As far as performance goes, the GeForce GT 320 should theoretically be quite a bit better than the GeForce 9500 GT DDR2 overall. (explain)

GeForce GT 320		25280 MB/sec
GeForce 9500 GT DDR2		16000 MB/sec
	Difference: 9280 (58%)

Texel Rate

The GeForce GT 320 will be quite a bit (more or less 47%) faster with regards to texture filtering than the GeForce 9500 GT DDR2. (explain)

GeForce GT 320		12960 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 4160 (47%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 9500 GT DDR2 is a better choice, though not by far. (explain)

GeForce 9500 GT DDR2		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

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.