GeForce 940M vs Radeon HD 3850 512MB

Intro

Compare that to the Radeon HD 3850 512MB, which features core clock speeds of 668 MHz on the GPU, and 828 MHz on the 512 MB of GDDR3 RAM. It features 320(64x5) SPUs along with 16 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3850 512MB, in theory, should perform much faster than the GeForce 940M overall. (explain)

Radeon HD 3850 512MB		52992 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 36992 (231%)

Texel Rate

The GeForce 940M will be much (about 141%) better at texture filtering than the Radeon HD 3850 512MB. (explain)

GeForce 940M		25728 Mtexels/sec
Radeon HD 3850 512MB		10688 Mtexels/sec
	Difference: 15040 (141%)

Pixel Rate

The Radeon HD 3850 512MB is a lot (more or less 25%) faster with regards to FSAA than the GeForce 940M, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 3850 512MB		10688 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 2112 (25%)

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 data (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.