Radeon HD 3850 512MB vs Radeon R9 M365X

Intro

Compare those specs to the Radeon R9 M365X, which has a core clock frequency of 925 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M365X is 36% quicker than the Radeon HD 3850 512MB overall, because of its greater bandwidth. (explain)

Radeon R9 M365X		72000 MB/sec
Radeon HD 3850 512MB		52992 MB/sec
	Difference: 19008 (36%)

Texel Rate

The Radeon R9 M365X should be much (more or less 246%) more effective at AF than the Radeon HD 3850 512MB. (explain)

Radeon R9 M365X		37000 Mtexels/sec
Radeon HD 3850 512MB		10688 Mtexels/sec
	Difference: 26312 (246%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M365X is the winner, by far. (explain)

Radeon R9 M365X		14800 Mpixels/sec
Radeon HD 3850 512MB		10688 Mpixels/sec
	Difference: 4112 (38%)

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 (counted in MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at 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 the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.