GeForce GT 440 3GB vs GeForce GTX 285 1GB

Intro

Compare all of that to the GeForce GTX 285 1GB, which makes use of a 55 nm design. nVidia has set the core speed at 648 MHz. The GDDR3 RAM runs at a speed of 1242 MHz on this specific card. It features 240 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 148 Watts (264%)

Memory Bandwidth

The GeForce GTX 285 1GB should in theory perform quite a bit faster than the GeForce GT 440 3GB overall. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 115776 (268%)

Texel Rate

The GeForce GTX 285 1GB is much (about 264%) faster with regards to texture filtering than the GeForce GT 440 3GB. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 37584 (264%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 285 1GB is the winner, and very much so. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 6480 (45%)

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 (counted in MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. 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 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.