GeForce GTX 285 2GB vs GeForce GTX 550 Ti

Intro

Compare all that to the GeForce GTX 550 Ti, which features a GPU core clock speed of 900 MHz, and 1024 MB of GDDR5 memory running at 1026 MHz through a 192-bit bus. It also is comprised of 192 Stream Processors, 32 TAUs, and 24 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 550 Ti		116 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 88 Watts (76%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 2GB will be 61% quicker than the GeForce GTX 550 Ti overall, because of its higher data rate. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GTX 550 Ti		98496 MB/sec
	Difference: 60480 (61%)

Texel Rate

The GeForce GTX 285 2GB is much (approximately 80%) more effective at AF than the GeForce GTX 550 Ti. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GTX 550 Ti		28800 Mtexels/sec
	Difference: 23040 (80%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 550 Ti is a better choice, but only just. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
GeForce GTX 285 2GB		20736 Mpixels/sec
	Difference: 864 (4%)

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 data (counted in MB per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units 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 quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.