GeForce GT 440 1.5GB vs Radeon HD 5750 512MB

Intro

Compare that to the Radeon HD 5750 512MB, which features GPU core speed of 700 MHz, and 512 MB of GDDR5 memory running at 1150 MHz through a 128-bit bus. It also is comprised of 720(144x5) SPUs, 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 5750 512MB		86 Watts
	Difference: 30 Watts (54%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5750 512MB should be 70% quicker than the GeForce GT 440 1.5GB in general, because of its greater bandwidth. (explain)

Radeon HD 5750 512MB		73600 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 30400 (70%)

Texel Rate

The Radeon HD 5750 512MB will be quite a bit (approximately 77%) more effective at texture filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 10944 (77%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 440 1.5GB is the winner, and very much so. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 3056 (27%)

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 information (in units of megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 texture map elements (texels) that are processed per 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.