GeForce GT 440 1.5GB vs Radeon HD 5670

Intro

Compare all of that to the Radeon HD 5670, which comes with core clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 400(80x5) SPUs as well as 20 TAUs and 8 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 5670		61 Watts
	Difference: 5 Watts (9%)

Memory Bandwidth

The Radeon HD 5670 should in theory be much faster than the GeForce GT 440 1.5GB in general. (explain)

Radeon HD 5670		64000 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 20800 (48%)

Texel Rate

The Radeon HD 5670 should be a little bit (more or less 9%) better at texture filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 5670		15500 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 1244 (9%)

Pixel Rate

The GeForce GT 440 1.5GB will be quite a bit (approximately 130%) faster with regards to full screen anti-aliasing than the Radeon HD 5670, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 8056 (130%)

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 data (counted in MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the 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 number of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number 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 rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.