GeForce GT 440 1.5GB vs Radeon HD 3850 1GB

Intro

Compare those specifications to the Radeon HD 3850 1GB, which features a clock frequency of 668 MHz and a GDDR3 memory speed of 828 MHz. It also features a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 320(64x5) SPUs, 16 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 3850 1GB		75 Watts
	Difference: 19 Watts (34%)

Memory Bandwidth

As far as performance goes, the Radeon HD 3850 1GB should theoretically be much better than the GeForce GT 440 1.5GB overall. (explain)

Radeon HD 3850 1GB		52992 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 9792 (23%)

Texel Rate

The GeForce GT 440 1.5GB will be much (more or less 33%) faster with regards to anisotropic filtering than the Radeon HD 3850 1GB. (explain)

GeForce GT 440 1.5GB		14256 Mtexels/sec
Radeon HD 3850 1GB		10688 Mtexels/sec
	Difference: 3568 (33%)

Pixel Rate

The GeForce GT 440 1.5GB should be a lot (more or less 33%) faster with regards to full screen anti-aliasing than the Radeon HD 3850 1GB, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 3850 1GB		10688 Mpixels/sec
	Difference: 3568 (33%)

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 maximum amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, 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 number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.