GeForce GT 440 3GB vs GeForce GTX 285 1GB

Intro

Compare those specs to the GeForce GTX 285 1GB, which features core clock speeds of 648 MHz on the GPU, and 1242 MHz on the 1024 MB of GDDR3 memory. It features 240 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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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 will be much (approximately 264%) more effective at anisotropic 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 using a high resolution is important to you, then the GeForce GTX 285 1GB is superior to the GeForce GT 440 3GB, by a large margin. (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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling 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 can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.