GeForce 920M vs Radeon HD 3850 1GB

Intro

Compare that to the Radeon HD 3850 1GB, which makes use of a 55 nm design. AMD has set the core frequency at 668 MHz. The GDDR3 RAM is set to run at a speed of 828 MHz on this particular model. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 3850 1GB should perform quite a bit 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 should be quite a bit (approximately 186%) better at AF than the Radeon HD 3850 1GB. (explain)

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

Pixel Rate

The Radeon HD 3850 1GB is much (approximately 40%) more effective at full screen anti-aliasing than the GeForce 920M, and capable of handling higher resolutions better. (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 largest amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. In the case of 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 AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units 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 fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.