GeForce GTX 285 2GB vs GeForce GTX 480

Intro

Compare those specs to the GeForce GTX 480, which has core speeds of 700 MHz on the GPU, and 924 MHz on the 1536 MB of GDDR5 RAM. It features 480 SPUs as well as 60 TAUs and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 2GB		204 Watts
GeForce GTX 480		250 Watts
	Difference: 46 Watts (23%)

Memory Bandwidth

In theory, the GeForce GTX 480 should perform a bit faster than the GeForce GTX 285 2GB overall. (explain)

GeForce GTX 480		177408 MB/sec
GeForce GTX 285 2GB		158976 MB/sec
	Difference: 18432 (12%)

Texel Rate

The GeForce GTX 285 2GB is a lot (about 23%) more effective at anisotropic filtering than the GeForce GTX 480. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GTX 480		42000 Mtexels/sec
	Difference: 9840 (23%)

Pixel Rate

The GeForce GTX 480 is a lot (about 62%) better at FSAA than the GeForce GTX 285 2GB, and also will be able to handle higher resolutions better. (explain)

GeForce GTX 480		33600 Mpixels/sec
GeForce GTX 285 2GB		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 max amount of information (counted in megabytes per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core 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 lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.