Radeon HD 3690/3830 vs Radeon R9 M365X

Intro

Compare those specs to the Radeon R9 M365X, which makes use of a 28 nm design. AMD has set the core frequency at 925 MHz. The GDDR5 RAM runs at a frequency of 1125 MHz on this card. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M365X should be much faster than the Radeon HD 3690/3830 in general. (explain)

Radeon R9 M365X		72000 MB/sec
Radeon HD 3690/3830		26496 MB/sec
	Difference: 45504 (172%)

Texel Rate

The Radeon R9 M365X is much (approximately 246%) more effective at AF than the Radeon HD 3690/3830. (explain)

Radeon R9 M365X		37000 Mtexels/sec
Radeon HD 3690/3830		10688 Mtexels/sec
	Difference: 26312 (246%)

Pixel Rate

The Radeon R9 M365X should be quite a bit (more or less 38%) more effective at AA than the Radeon HD 3690/3830, and also should be capable of handling higher screen resolutions better. (explain)

Radeon R9 M365X		14800 Mpixels/sec
Radeon HD 3690/3830		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 data (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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 get to the maximum fill rate.