GeForce GTS 450 1GB vs GeForce GTX 285 1GB

Intro

Compare those specs to the GeForce GTX 285 1GB, which uses a 55 nm design. nVidia has clocked the core speed at 648 MHz. The GDDR3 memory works at a frequency of 1242 MHz on this card. It features 240 SPUs along with 80 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB should be 175% quicker than the GeForce GTS 450 1GB overall, due to its higher bandwidth. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 101248 (175%)

Texel Rate

The GeForce GTX 285 1GB should be quite a bit (about 107%) more effective at anisotropic filtering than the GeForce GTS 450 1GB. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 26784 (107%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 285 1GB is superior to the GeForce GTS 450 1GB, by a large margin. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce GTS 450 1GB		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: Bandwidth is the largest amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 figure is worked out by multiplying the total amount of texture units by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.