GeForce GT 340 1GB vs GeForce GT 440 3GB

Intro

Compare all of that to the GeForce GT 440 3GB, which makes use of a 40 nm design. nVidia has clocked the core frequency at 594 MHz. The GDDR3 memory works at a frequency of 900 MHz on this particular model. It features 144 SPUs along with 24 Texture Address Units and 24 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GT 340 1GB		69 Watts
	Difference: 13 Watts (23%)

Memory Bandwidth

The GeForce GT 340 1GB, in theory, should be quite a bit faster than the GeForce GT 440 3GB overall. (explain)

GeForce GT 340 1GB		54400 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 11200 (26%)

Texel Rate

The GeForce GT 340 1GB should be a lot (more or less 23%) more effective at texture filtering than the GeForce GT 440 3GB. (explain)

GeForce GT 340 1GB		17600 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 3344 (23%)

Pixel Rate

The GeForce GT 440 3GB should be quite a bit (more or less 224%) better at FSAA than the GeForce GT 340 1GB, and should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
GeForce GT 340 1GB		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: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's 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 amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.