Radeon HD 3850 512MB vs Radeon R9 M370X

Intro

Compare those specs to the Radeon R9 M370X, which has GPU clock speed of 800 MHz, and 2048 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 M370X should perform much faster than the Radeon HD 3850 512MB in general. (explain)

Radeon R9 M370X		72000 MB/sec
Radeon HD 3850 512MB		52992 MB/sec
	Difference: 19008 (36%)

Texel Rate

The Radeon R9 M370X will be much (approximately 199%) more effective at AF than the Radeon HD 3850 512MB. (explain)

Radeon R9 M370X		32000 Mtexels/sec
Radeon HD 3850 512MB		10688 Mtexels/sec
	Difference: 21312 (199%)

Pixel Rate

The Radeon R9 M370X is a small bit (about 20%) better at anti-aliasing than the Radeon HD 3850 512MB, and also able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 M370X		12800 Mpixels/sec
Radeon HD 3850 512MB		10688 Mpixels/sec
	Difference: 2112 (20%)

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 maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units by the core clock 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 per second.

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