GeForce GT 440 3GB vs GeForce GTX 275

Intro

Compare those specifications to the GeForce GTX 275, which features core speeds of 633 MHz on the GPU, and 1134 MHz on the 896 MB of GDDR3 RAM. It features 240 SPUs along with 80 TAUs and 28 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 275		219 Watts
	Difference: 163 Watts (291%)

Memory Bandwidth

In theory, the GeForce GTX 275 should perform quite a bit faster than the GeForce GT 440 3GB overall. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 83808 (194%)

Texel Rate

The GeForce GTX 275 is much (approximately 255%) better at anisotropic filtering than the GeForce GT 440 3GB. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 36384 (255%)

Pixel Rate

The GeForce GTX 275 is quite a bit (about 24%) more effective at anti-aliasing than the GeForce GT 440 3GB, and also will be capable of handling higher screen resolutions better. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 3468 (24%)

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 information (in units of megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video 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 maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.