GeForce GTX 880M vs Radeon HD 3850 256MB

Intro

Compare those specs to the Radeon HD 3850 256MB, which comes with a GPU core clock speed of 668 MHz, and 256 MB of GDDR3 memory running at 828 MHz through a 256-bit bus. It also is made up of 320(64x5) SPUs, 16 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3850 256MB		75 Watts
GeForce GTX 880M		130 Watts
	Difference: 55 Watts (73%)

Memory Bandwidth

Performance-wise, the GeForce GTX 880M should theoretically be much superior to the Radeon HD 3850 256MB in general. (explain)

GeForce GTX 880M		128000 MB/sec
Radeon HD 3850 256MB		52992 MB/sec
	Difference: 75008 (142%)

Texel Rate

The GeForce GTX 880M should be quite a bit (about 1043%) faster with regards to anisotropic filtering than the Radeon HD 3850 256MB. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 3850 256MB		10688 Mtexels/sec
	Difference: 111424 (1043%)

Pixel Rate

The GeForce GTX 880M will be much (more or less 186%) more effective at anti-aliasing than the Radeon HD 3850 256MB, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 3850 256MB		10688 Mpixels/sec
	Difference: 19840 (186%)

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 largest amount of data (in units of MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.