GeForce GTX 285 2GB vs GeForce GTX 480

Intro

Compare all that to the GeForce GTX 480, which has a core clock frequency of 700 MHz and a GDDR5 memory frequency of 924 MHz. It also uses a 384-bit bus, and uses a 40 nm design. It 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 2GB		204 Watts
GeForce GTX 480		250 Watts
	Difference: 46 Watts (23%)

Memory Bandwidth

The GeForce GTX 480, in theory, should perform a little bit faster than the GeForce GTX 285 2GB in general. (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 (more or less 23%) faster with regards to texture 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

If using a high screen resolution is important to you, then the GeForce GTX 480 is a better choice, by a large margin. (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: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount of 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.