GeForce GT 440 1.5GB vs Radeon HD 5830

Intro

Compare those specifications to the Radeon HD 5830, which uses a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this specific model. It features 1120(224x5) SPUs as well as 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
Radeon HD 5830		175 Watts
	Difference: 119 Watts (213%)

Memory Bandwidth

Performance-wise, the Radeon HD 5830 should theoretically be quite a bit superior to the GeForce GT 440 1.5GB in general. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 84800 (196%)

Texel Rate

The Radeon HD 5830 should be much (approximately 214%) faster with regards to anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 30544 (214%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 440 1.5GB is the winner, not by a very large margin though. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 1456 (11%)

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 max amount of information (counted in megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.