GeForce GTS 450 vs GeForce GTX 285 2GB

Intro

Compare that to the GeForce GTX 285 2GB, which uses a 55 nm design. nVidia has clocked the core frequency at 648 MHz. The GDDR3 memory runs at a frequency of 1242 MHz on this model. 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 GTS 450		106 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 98 Watts (92%)

Memory Bandwidth

Performance-wise, the GeForce GTX 285 2GB should in theory be quite a bit better than the GeForce GTS 450 overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 101248 (175%)

Texel Rate

The GeForce GTX 285 2GB should be much (about 107%) more effective at texture filtering than the GeForce GTS 450. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 26784 (107%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 285 2GB is the winner, by far. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 8208 (66%)

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 (counted in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most 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 ROPs by the clock 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 rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.