GeForce GT 450 (OEM) vs GeForce GTX 285 1GB

Intro

Compare those specifications to the GeForce GTX 285 1GB, which uses a 55 nm design. nVidia has clocked the core speed at 648 MHz. The GDDR3 memory runs at a frequency of 1242 MHz on this particular card. It features 240 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 98 Watts (92%)

Memory Bandwidth

The GeForce GTX 285 1GB should theoretically be quite a bit faster than the GeForce GT 450 (OEM) in general. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 62976 (66%)

Texel Rate

The GeForce GTX 285 1GB will be a lot (about 173%) faster with regards to texture filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 32880 (173%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 285 1GB is superior to the GeForce GT 450 (OEM), but not by far. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 1776 (9%)

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 (measured in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, 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 maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.