Radeon HD 3850 512MB vs Radeon R9 M385X

Intro

Compare all that to the Radeon R9 M385X, which has clock speeds of 1100 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 memory. It features 896 SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M385X should theoretically be much faster than the Radeon HD 3850 512MB in general. (explain)

Radeon R9 M385X		96000 MB/sec
Radeon HD 3850 512MB		52992 MB/sec
	Difference: 43008 (81%)

Texel Rate

The Radeon R9 M385X is a lot (approximately 476%) faster with regards to texture filtering than the Radeon HD 3850 512MB. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon HD 3850 512MB		10688 Mtexels/sec
	Difference: 50912 (476%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M385X is superior to the Radeon HD 3850 512MB, by a large margin. (explain)

Radeon R9 M385X		17600 Mpixels/sec
Radeon HD 3850 512MB		10688 Mpixels/sec
	Difference: 6912 (65%)

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 max amount of information (counted in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.