GeForce GT 430 (OEM) vs GeForce GT 440 3GB

Intro

Compare those specs to the GeForce GT 440 3GB, which uses a 40 nm design. nVidia has clocked the core frequency at 594 MHz. The GDDR3 RAM works at a speed of 900 MHz on this model. It features 144 SPUs as well as 24 Texture Address Units and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GT 430 (OEM)		60 Watts
	Difference: 4 Watts (7%)

Memory Bandwidth

As far as performance goes, the GeForce GT 440 3GB should theoretically be quite a bit better than the GeForce GT 430 (OEM) overall. (explain)

GeForce GT 440 3GB		43200 MB/sec
GeForce GT 430 (OEM)		28800 MB/sec
	Difference: 14400 (50%)

Texel Rate

The GeForce GT 440 3GB should be a lot (about 27%) more effective at anisotropic filtering than the GeForce GT 430 (OEM). (explain)

GeForce GT 440 3GB		14256 Mtexels/sec
GeForce GT 430 (OEM)		11200 Mtexels/sec
	Difference: 3056 (27%)

Pixel Rate

The GeForce GT 440 3GB should be much (more or less 409%) better at anti-aliasing than the GeForce GT 430 (OEM), and also should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
GeForce GT 430 (OEM)		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 max amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the 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 amount of texture map elements (texels) that are processed per second. This 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 a second.

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