GeForce GT 440 3GB vs Radeon HD 3850 1GB

Intro

Compare all of that to the Radeon HD 3850 1GB, which comes with a GPU core clock speed of 668 MHz, and 1024 MB of GDDR3 memory running at 828 MHz through a 256-bit bus. It also is comprised 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 3GB		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 in theory be quite a bit better than the GeForce GT 440 3GB in general. (explain)

Radeon HD 3850 1GB		52992 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 9792 (23%)

Texel Rate

The GeForce GT 440 3GB will be a lot (about 33%) more effective at texture filtering than the Radeon HD 3850 1GB. (explain)

GeForce GT 440 3GB		14256 Mtexels/sec
Radeon HD 3850 1GB		10688 Mtexels/sec
	Difference: 3568 (33%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GT 440 3GB is superior to the Radeon HD 3850 1GB, by far. (explain)

GeForce GT 440 3GB		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 largest amount of data (in units of MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 number 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 speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.