Radeon HD 6670 (OEM) vs Radeon R9 Nano

Intro

Compare that to the Radeon R9 Nano, which uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The HBM memory works at a frequency of 500 MHz on this particular card. It features 4096 SPUs along with 256 TAUs 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 Nano		14918 points
Radeon HD 6670 (OEM)		1120 points
	Difference: 13798 (1232%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
Radeon R9 Nano		175 Watts
	Difference: 112 Watts (178%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 Nano should be 700% quicker than the Radeon HD 6670 (OEM) in general, due to its greater bandwidth. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 448000 (700%)

Texel Rate

The Radeon R9 Nano will be a lot (approximately 1233%) faster with regards to anisotropic filtering than the Radeon HD 6670 (OEM). (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 236800 (1233%)

Pixel Rate

The Radeon R9 Nano is much (approximately 900%) more effective at anti-aliasing than the Radeon HD 6670 (OEM), and also will be able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 Nano		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 largest amount of data (counted in MB per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units by the core clock 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes 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 bandwidth is, the lower the potential to get to the max fill rate.