GeForce GT 240 GDDR5 vs GeForce GT 440 1.5GB

Intro

Compare all that to the GeForce GT 440 1.5GB, which has a clock frequency of 594 MHz and a GDDR3 memory frequency of 900 MHz. It also makes use of a 192-bit bus, and makes use of a 40 nm design. It is made up of 144 SPUs, 24 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 14 Watts (25%)

Memory Bandwidth

The GeForce GT 240 GDDR5, in theory, should perform much faster than the GeForce GT 440 1.5GB overall. (explain)

GeForce GT 240 GDDR5		54400 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 11200 (26%)

Texel Rate

The GeForce GT 240 GDDR5 will be quite a bit (more or less 23%) more effective at AF than the GeForce GT 440 1.5GB. (explain)

GeForce GT 240 GDDR5		17600 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 3344 (23%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GT 440 1.5GB is the winner, by far. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 9856 (224%)

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 one second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units of the card 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.