GeForce 920M vs Radeon R5 M255

Intro

Compare those specifications to the Radeon R5 M255, which uses a 28 nm design. AMD has clocked the core frequency at 940 MHz. The DDR3 memory works at a frequency of 1000 MHz on this model. It features 320 SPUs along with 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R5 M255 should theoretically be a bit better than the GeForce 920M in general. (explain)

Radeon R5 M255		16000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 1600 (11%)

Texel Rate

The GeForce 920M should be a lot (approximately 62%) more effective at anisotropic filtering than the Radeon R5 M255. (explain)

GeForce 920M		30528 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 11728 (62%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 920M is a better choice, though only just barely. (explain)

GeForce 920M		7632 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 112 (1%)

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 information (in units of MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

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