GeForce GT 320 vs GeForce GTX 465

Intro

Compare those specifications to the GeForce GTX 465, which features a core clock speed of 607 MHz and a GDDR5 memory frequency of 802 MHz. It also features a 256-bit bus, and uses a 40 nm design. It is comprised of 352 SPUs, 44 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 465		200 Watts
	Difference: 157 Watts (365%)

Memory Bandwidth

In theory, the GeForce GTX 465 is 306% quicker than the GeForce GT 320 in general, due to its higher bandwidth. (explain)

GeForce GTX 465		102592 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 77312 (306%)

Texel Rate

The GeForce GTX 465 will be much (about 106%) better at anisotropic filtering than the GeForce GT 320. (explain)

GeForce GTX 465		26708 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 13748 (106%)

Pixel Rate

The GeForce GTX 465 should be a lot (approximately 350%) faster with regards to AA than the GeForce GT 320, and also capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 15104 (350%)

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 maximum amount of information (counted in MB per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip 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 Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.