GeForce 920M vs Radeon HD 3850 1GB

Intro

Compare that to the Radeon HD 3850 1GB, which features core clock 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

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 3850 1GB should perform a lot faster than the GeForce 920M in general. (explain)

Radeon HD 3850 1GB		52992 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 38592 (268%)

Texel Rate

The GeForce 920M will be much (approximately 186%) faster with regards to texture filtering than the Radeon HD 3850 1GB. (explain)

GeForce 920M		30528 Mtexels/sec
Radeon HD 3850 1GB		10688 Mtexels/sec
	Difference: 19840 (186%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 3850 1GB is the winner, by a large margin. (explain)

Radeon HD 3850 1GB		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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the 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 maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.