GeForce GTX 285 1GB vs GeForce GTX 590

Intro

Compare those specifications to the GeForce GTX 590, which features a clock frequency of 607 MHz and a GDDR5 memory speed of 855 MHz. It also makes use of a 384-bit memory bus, and uses a 40 nm design. It is comprised of 512 SPUs, 64 TAUs, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 1GB		204 Watts
GeForce GTX 590		365 Watts
	Difference: 161 Watts (79%)

Memory Bandwidth

The GeForce GTX 590 should theoretically be a lot faster than the GeForce GTX 285 1GB overall. (explain)

GeForce GTX 590		328320 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 169344 (107%)

Texel Rate

The GeForce GTX 590 will be much (more or less 50%) more effective at anisotropic filtering than the GeForce GTX 285 1GB. (explain)

GeForce GTX 590		77696 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 25856 (50%)

Pixel Rate

The GeForce GTX 590 should be a lot (approximately 181%) faster with regards to AA than the GeForce GTX 285 1GB, and should be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 590		58272 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 37536 (181%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses 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 number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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