GeForce 920M vs Radeon HD 3850 512MB

Intro

Compare all that to the Radeon HD 3850 512MB, which has a GPU core clock speed of 668 MHz, and 512 MB of GDDR3 memory running at 828 MHz through a 256-bit bus. It also is made up of 320(64x5) SPUs, 16 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3850 512MB should theoretically perform a lot faster than the GeForce 920M overall. (explain)

Radeon HD 3850 512MB		52992 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 38592 (268%)

Texel Rate

The GeForce 920M will be quite a bit (about 186%) better at texture filtering than the Radeon HD 3850 512MB. (explain)

GeForce 920M		30528 Mtexels/sec
Radeon HD 3850 512MB		10688 Mtexels/sec
	Difference: 19840 (186%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 3850 512MB is a better choice, by a large margin. (explain)

Radeon HD 3850 512MB		10688 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 3056 (40%)

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 information (measured in MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.