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

Intro

Compare those specifications to the Radeon R9 Nano, which comes with a clock speed of 1000 MHz and a HBM memory speed of 500 MHz. It also makes use of a 4096-bit bus, and makes use of a 28 nm design. It is comprised of 4096 SPUs, 256 TAUs, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB		63 Watts
Radeon R9 Nano		175 Watts
	Difference: 112 Watts (178%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 Nano is 700% faster than the Radeon HD 6670 (OEM) 1GB overall, because of its greater data rate. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon HD 6670 (OEM) 1GB		64000 MB/sec
	Difference: 448000 (700%)

Texel Rate

The Radeon R9 Nano will be a lot (about 1233%) more effective at texture filtering than the Radeon HD 6670 (OEM) 1GB. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
	Difference: 236800 (1233%)

Pixel Rate

The Radeon R9 Nano will be much (more or less 900%) faster with regards to AA than the Radeon HD 6670 (OEM) 1GB, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon HD 6670 (OEM) 1GB		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 information (in units of MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.