GeForce GTS 450 1GB vs GeForce GTX 285 1GB

Intro

Compare those specs to the GeForce GTX 285 1GB, which comes with GPU core speed of 648 MHz, and 1024 MB of GDDR3 memory set to run at 1242 MHz through a 512-bit bus. It also is made up of 240 Stream Processors, 80 TAUs, 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

In theory, the GeForce GTX 285 1GB is 175% faster than the GeForce GTS 450 1GB overall, due to its higher data rate. (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 (more or less 107%) more effective at texture 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 using a high screen resolution is important to you, then the GeForce GTX 285 1GB is superior to the GeForce GTS 450 1GB, and very much so. (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 (measured in megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 can be applied in one second. This number is calculated 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 handling 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 chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines 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 also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.