GeForce GT 320 vs GeForce GT 450 (OEM)

Intro

Compare that to the GeForce GT 450 (OEM), which features core clock speeds of 790 MHz on the GPU, and 1000 MHz on the 1536 MB of GDDR5 memory. It features 144 SPUs along with 24 TAUs and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 63 Watts (147%)

Memory Bandwidth

The GeForce GT 450 (OEM), in theory, should be much faster than the GeForce GT 320 overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 70720 (280%)

Texel Rate

The GeForce GT 450 (OEM) should be a lot (more or less 46%) better at anisotropic filtering than the GeForce GT 320. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 6000 (46%)

Pixel Rate

The GeForce GT 450 (OEM) is quite a bit (approximately 339%) more effective at AA than the GeForce GT 320, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 14640 (339%)

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 largest amount of information (counted in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 in one second. This number is calculated by multiplying the total number of texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated 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 outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.