Radeon HD 6670 (OEM) 1GB vs Radeon R9 280

Intro

Compare all that to the Radeon R9 280, which uses a 28 nm design. AMD has clocked the core frequency at 933 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this specific card. It features 1792 SPUs as well as 112 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB		63 Watts
Radeon R9 280		250 Watts
	Difference: 187 Watts (297%)

Memory Bandwidth

In theory, the Radeon R9 280 should perform a lot faster than the Radeon HD 6670 (OEM) 1GB overall. (explain)

Radeon R9 280		240000 MB/sec
Radeon HD 6670 (OEM) 1GB		64000 MB/sec
	Difference: 176000 (275%)

Texel Rate

The Radeon R9 280 is much (about 444%) better at AF than the Radeon HD 6670 (OEM) 1GB. (explain)

Radeon R9 280		104496 Mtexels/sec
Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
	Difference: 85296 (444%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 280 is the winner, by a large margin. (explain)

Radeon R9 280		29856 Mpixels/sec
Radeon HD 6670 (OEM) 1GB		6400 Mpixels/sec
	Difference: 23456 (367%)

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 max amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 reach the max fill rate.