GeForce 920M vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which uses a 40 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 RAM runs at a frequency of 1200 MHz on this particular card. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 5770 should be much faster than the GeForce 920M overall. (explain)

Radeon HD 5770		76800 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 62400 (433%)

Texel Rate

The Radeon HD 5770 should be a small bit (more or less 11%) more effective at anisotropic filtering than the GeForce 920M. (explain)

Radeon HD 5770		34000 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 3472 (11%)

Pixel Rate

The Radeon HD 5770 should be quite a bit (approximately 78%) better at anti-aliasing than the GeForce 920M, and also able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 5770		13600 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 5968 (78%)

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 (measured in MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. 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 rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.