GeForce GT 310 vs GeForce GT 320

Intro

Compare all of that to the GeForce GT 320, which comes with core clock speeds of 540 MHz on the GPU, and 790 MHz on the 1024 MB of GDDR3 RAM. It features 72 SPUs along with 24 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 310		31 Watts
GeForce GT 320		43 Watts
	Difference: 12 Watts (39%)

Memory Bandwidth

In theory, the GeForce GT 320 is 58% faster than the GeForce GT 310 in general, because of its greater bandwidth. (explain)

GeForce GT 320		25280 MB/sec
GeForce GT 310		16000 MB/sec
	Difference: 9280 (58%)

Texel Rate

The GeForce GT 320 will be quite a bit (approximately 175%) faster with regards to anisotropic filtering than the GeForce GT 310. (explain)

GeForce GT 320		12960 Mtexels/sec
GeForce GT 310		4712 Mtexels/sec
	Difference: 8248 (175%)

Pixel Rate

The GeForce GT 320 will be a lot (about 83%) better at FSAA than the GeForce GT 310, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GT 320		4320 Mpixels/sec
GeForce GT 310		2356 Mpixels/sec
	Difference: 1964 (83%)

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 information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.