Radeon HD 6670 (OEM) vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which comes with a GPU core clock speed of 1000 MHz, and 8192 MB of GDDR5 memory running at 1500 MHz through a 512-bit bus. It also is comprised of 2560 SPUs, 160 Texture Address Units, and 64 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 390 8G		12733 points
Radeon HD 6670 (OEM)		1120 points
	Difference: 11613 (1037%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
Radeon R9 390 8G		275 Watts
	Difference: 212 Watts (337%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 390 8G is 500% quicker than the Radeon HD 6670 (OEM) overall, because of its greater bandwidth. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 320000 (500%)

Texel Rate

The Radeon R9 390 8G is much (approximately 733%) more effective at texture filtering than the Radeon HD 6670 (OEM). (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 140800 (733%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 390 8G is superior to the Radeon HD 6670 (OEM), and very much so. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 57600 (900%)

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 (counted in MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen 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 texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at 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 video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.