GeForce 940M vs Radeon HD 3850 1GB

Intro

Compare all that to the Radeon HD 3850 1GB, which has core speeds of 668 MHz on the GPU, and 828 MHz on the 1024 MB of GDDR3 RAM. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 3850 1GB should theoretically be a lot superior to the GeForce 940M overall. (explain)

Radeon HD 3850 1GB		52992 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 36992 (231%)

Texel Rate

The GeForce 940M is a lot (about 141%) faster with regards to texture filtering than the Radeon HD 3850 1GB. (explain)

GeForce 940M		25728 Mtexels/sec
Radeon HD 3850 1GB		10688 Mtexels/sec
	Difference: 15040 (141%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 3850 1GB is superior to the GeForce 940M, by far. (explain)

Radeon HD 3850 1GB		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 (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR memory, the result should 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, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.