GeForce GT 430 1GB vs GeForce GT 440 1.5GB

Intro

Compare that to the GeForce GT 440 1.5GB, which features GPU clock speed of 594 MHz, and 1536 MB of GDDR3 memory set to run at 900 MHz through a 192-bit bus. It also is comprised of 144 SPUs, 24 TAUs, 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 430 1GB		60 Watts
	Difference: 4 Watts (7%)

Memory Bandwidth

In theory, the GeForce GT 440 1.5GB will be 50% faster than the GeForce GT 430 1GB overall, due to its higher bandwidth. (explain)

GeForce GT 440 1.5GB		43200 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 14400 (50%)

Texel Rate

The GeForce GT 440 1.5GB should be much (about 27%) more effective at anisotropic filtering than the GeForce GT 430 1GB. (explain)

GeForce GT 440 1.5GB		14256 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 3056 (27%)

Pixel Rate

The GeForce GT 440 1.5GB should be much (about 409%) more effective at FSAA than the GeForce GT 430 1GB, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 11456 (409%)

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 largest amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its 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 outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.