Radeon HD 6670 (OEM) 1GB vs Radeon R7 M260

Intro

Compare those specs to the Radeon R7 M260, which has a core clock frequency of 715 MHz and a DDR3 memory frequency of 1000 MHz. It also uses a 64-bit bus, and uses a 28 nm design. It is made up of 384 SPUs, 24 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 6670 (OEM) 1GB should in theory perform much faster than the Radeon R7 M260 overall. (explain)

Radeon HD 6670 (OEM) 1GB		64000 MB/sec
Radeon R7 M260		16000 MB/sec
	Difference: 48000 (300%)

Texel Rate

The Radeon HD 6670 (OEM) 1GB will be a bit (approximately 12%) faster with regards to texture filtering than the Radeon R7 M260. (explain)

Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
Radeon R7 M260		17160 Mtexels/sec
	Difference: 2040 (12%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 6670 (OEM) 1GB is the winner, but only just. (explain)

Radeon HD 6670 (OEM) 1GB		6400 Mpixels/sec
Radeon R7 M260		5720 Mpixels/sec
	Difference: 680 (12%)

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 information (counted in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 high resolutions.

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

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