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

Intro

Compare those specifications to the Radeon R9 280X, which has clock speeds of 850 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the Radeon R9 280X is 350% quicker than the Radeon HD 6670 (OEM) 1GB overall, due to its higher bandwidth. (explain)

Radeon R9 280X		288000 MB/sec
Radeon HD 6670 (OEM) 1GB		64000 MB/sec
	Difference: 224000 (350%)

Texel Rate

The Radeon R9 280X is much (about 467%) better at AF than the Radeon HD 6670 (OEM) 1GB. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
	Difference: 89600 (467%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 280X is the winner, by a large margin. (explain)

Radeon R9 280X		27200 Mpixels/sec
Radeon HD 6670 (OEM) 1GB		6400 Mpixels/sec
	Difference: 20800 (325%)

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 (measured in megabytes per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.