GeForce GT 440 1.5GB vs Radeon HD 6750 1GB

Intro

Compare those specs to the Radeon HD 6750 1GB, which uses a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this card. It features 720 SPUs along with 36 Texture Address Units 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 6750 1GB		86 Watts
	Difference: 30 Watts (54%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6750 1GB should perform a lot faster than the GeForce GT 440 1.5GB in general. (explain)

Radeon HD 6750 1GB		64000 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 20800 (48%)

Texel Rate

The Radeon HD 6750 1GB will be a lot (about 83%) more effective at texture filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 6750 1GB		26100 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 11844 (83%)

Pixel Rate

The GeForce GT 440 1.5GB should be a lot (approximately 23%) better at anti-aliasing than the Radeon HD 6750 1GB, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 2656 (23%)

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 (measured in MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that can be 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 better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. 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 fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.