Radeon HD 6670 (OEM) vs Radeon R9 M295X

Intro

Compare those specifications to the Radeon R9 M295X, which comes with a clock speed of 750 MHz and a GDDR5 memory speed of 1375 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically, the Radeon R9 M295X should be much faster than the Radeon HD 6670 (OEM) in general. (explain)

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

Texel Rate

The Radeon R9 M295X is a lot (approximately 400%) more effective at AF than the Radeon HD 6670 (OEM). (explain)

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

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M295X is a better choice, by a large margin. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon HD 6670 (OEM)		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 MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's 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 is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.