GeForce GT 440 3GB vs Radeon HD 5670

Intro

Compare that to the Radeon HD 5670, which makes use of a 40 nm design. AMD has clocked the core speed at 775 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this particular model. It features 400(80x5) SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon HD 5670		61 Watts
	Difference: 5 Watts (9%)

Memory Bandwidth

Theoretically, the Radeon HD 5670 should be quite a bit faster than the GeForce GT 440 3GB in general. (explain)

Radeon HD 5670		64000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 20800 (48%)

Texel Rate

The Radeon HD 5670 is a small bit (more or less 9%) better at anisotropic filtering than the GeForce GT 440 3GB. (explain)

Radeon HD 5670		15500 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 1244 (9%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 440 3GB is the winner, and very much so. (explain)

GeForce GT 440 3GB		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: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 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 applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, 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 amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out 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 filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.