GeForce 9500 GT DDR2 vs GeForce GT 320

Intro

Compare that to the GeForce GT 320, which features GPU core speed of 540 MHz, and 1024 MB of GDDR3 memory set to run at 790 MHz through a 128-bit bus. It also is made up of 72 SPUs, 24 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

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

Theoretically speaking, the GeForce GT 320 should perform quite a bit faster 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 should be a lot (about 47%) more effective at AF 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 lots of anti-aliasing is important to you, then the GeForce 9500 GT DDR2 is the winner, but only just. (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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, 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 better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the video 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 colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.