GeForce 825M vs Radeon R5 M230

Intro

Compare all that to the Radeon R5 M230, which comes with a clock frequency of 780 MHz and a DDR3 memory speed of 1000 MHz. It also makes use of a 64-bit bus, and makes use of a 28 nm design. It is made up of 320 SPUs, 20 TAUs, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R5 M230 should theoretically be a little bit faster than the GeForce 825M overall. (explain)

Radeon R5 M230		16000 MB/sec
GeForce 825M		14400 MB/sec
	Difference: 1600 (11%)

Texel Rate

The Radeon R5 M230 is just a bit (more or less 15%) faster with regards to AF than the GeForce 825M. (explain)

Radeon R5 M230		15600 Mtexels/sec
GeForce 825M		13600 Mtexels/sec
	Difference: 2000 (15%)

Pixel Rate

The GeForce 825M is much (about 118%) more effective at full screen anti-aliasing than the Radeon R5 M230, and will be capable of handling higher resolutions while still performing well. (explain)

GeForce 825M		6800 Mpixels/sec
Radeon R5 M230		3120 Mpixels/sec
	Difference: 3680 (118%)

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 (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.