Radeon HD 6670 (OEM) vs Radeon R9 M270X

Intro

Compare those specifications to the Radeon R9 M270X, which makes use of a 28 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 RAM is set to run at a speed of 1125 MHz on this particular model. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M270X, in theory, should be a small bit faster than the Radeon HD 6670 (OEM) in general. (explain)

Radeon R9 M270X		72000 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 8000 (13%)

Texel Rate

The Radeon R9 M270X should be much (approximately 51%) more effective at texture filtering than the Radeon HD 6670 (OEM). (explain)

Radeon R9 M270X		29000 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 9800 (51%)

Pixel Rate

The Radeon R9 M270X is a lot (more or less 81%) faster with regards to full screen anti-aliasing than the Radeon HD 6670 (OEM), and will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 M270X		11600 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 5200 (81%)

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 (measured in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, 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 most pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.