GeForce GTX 285 1GB vs GeForce GTX 480

Intro

Compare all that to the GeForce GTX 480, which features GPU clock speed of 700 MHz, and 1536 MB of GDDR5 memory running at 924 MHz through a 384-bit bus. It also is made up of 480 SPUs, 60 TAUs, and 48 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 1GB		204 Watts
GeForce GTX 480		250 Watts
	Difference: 46 Watts (23%)

Memory Bandwidth

The GeForce GTX 480 should theoretically be just a bit faster than the GeForce GTX 285 1GB overall. (explain)

GeForce GTX 480		177408 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 18432 (12%)

Texel Rate

The GeForce GTX 285 1GB should be a lot (more or less 23%) better at texture filtering than the GeForce GTX 480. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GTX 480		42000 Mtexels/sec
	Difference: 9840 (23%)

Pixel Rate

The GeForce GTX 480 is a lot (more or less 62%) faster with regards to FSAA than the GeForce GTX 285 1GB, and should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 480		33600 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 12864 (62%)

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 transported across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs 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 fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.