GeForce GTX 285 1GB vs GeForce GTX 465

Intro

Compare those specs to the GeForce GTX 465, which comes with GPU clock speed of 607 MHz, and 1024 MB of GDDR5 RAM running at 802 MHz through a 256-bit bus. It also is comprised of 352 Stream Processors, 44 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465		200 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 4 Watts (2%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 285 1GB should theoretically be much better than the GeForce GTX 465 in general. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 56384 (55%)

Texel Rate

The GeForce GTX 285 1GB should be a lot (approximately 94%) faster with regards to texture filtering than the GeForce GTX 465. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 25132 (94%)

Pixel Rate

The GeForce GTX 285 1GB will be just a bit (approximately 7%) better at AA than the GeForce GTX 465, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 1312 (7%)

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 data (measured in megabytes per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.