Radeon HD 3850 1GB vs Radeon R7 M260X

Intro

Compare that to the Radeon R7 M260X, which makes use of a 28 nm design. AMD has set the core speed at 825 MHz. The GDDR5 memory works at a speed of 1000 MHz on this specific card. It features 384 SPUs along with 24 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R7 M260X should in theory be much superior to the Radeon HD 3850 1GB in general. (explain)

Radeon R7 M260X		64000 MB/sec
Radeon HD 3850 1GB		52992 MB/sec
	Difference: 11008 (21%)

Texel Rate

The Radeon R7 M260X is much (approximately 85%) faster with regards to texture filtering than the Radeon HD 3850 1GB. (explain)

Radeon R7 M260X		19800 Mtexels/sec
Radeon HD 3850 1GB		10688 Mtexels/sec
	Difference: 9112 (85%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 3850 1GB is superior to the Radeon R7 M260X, and very much so. (explain)

Radeon HD 3850 1GB		10688 Mpixels/sec
Radeon R7 M260X		6600 Mpixels/sec
	Difference: 4088 (62%)

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 (measured in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 can be processed per 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 this number, the better the 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 amount of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.