Radeon HD 6670 (OEM) 1GB vs Radeon R9 M295X

Intro

Compare all of that to the Radeon R9 M295X, which comes with core clock speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB		63 Watts
Radeon R9 M295X		125 Watts
	Difference: 62 Watts (98%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M295X should theoretically be much better than the Radeon HD 6670 (OEM) 1GB in general. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon HD 6670 (OEM) 1GB		64000 MB/sec
	Difference: 112000 (175%)

Texel Rate

The Radeon R9 M295X should be a lot (approximately 400%) faster with regards to anisotropic filtering than the Radeon HD 6670 (OEM) 1GB. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
	Difference: 76800 (400%)

Pixel Rate

The Radeon R9 M295X should be much (more or less 275%) faster with regards to FSAA than the Radeon HD 6670 (OEM) 1GB, and also will be able to handle higher screen resolutions better. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon HD 6670 (OEM) 1GB		6400 Mpixels/sec
	Difference: 17600 (275%)

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 data (counted in megabytes per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated 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 outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.