Radeon HD 3690/3830 vs Radeon R7 M260

Intro

Compare all of that to the Radeon R7 M260, which features a core clock speed of 715 MHz and a DDR3 memory speed of 1000 MHz. It also makes use of a 64-bit bus, and makes use of a 28 nm design. It is comprised of 384 SPUs, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3690/3830 should in theory perform a lot faster than the Radeon R7 M260 overall. (explain)

Radeon HD 3690/3830		26496 MB/sec
Radeon R7 M260		16000 MB/sec
	Difference: 10496 (66%)

Texel Rate

The Radeon R7 M260 is a lot (approximately 61%) faster with regards to AF than the Radeon HD 3690/3830. (explain)

Radeon R7 M260		17160 Mtexels/sec
Radeon HD 3690/3830		10688 Mtexels/sec
	Difference: 6472 (61%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 3690/3830 is superior to the Radeon R7 M260, by a large margin. (explain)

Radeon HD 3690/3830		10688 Mpixels/sec
Radeon R7 M260		5720 Mpixels/sec
	Difference: 4968 (87%)

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: Bandwidth is the max amount of data (in units of MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video 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 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 calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.