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

Intro

Compare those specifications to the Radeon R9 280, which features a core clock frequency of 933 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 384-bit memory bus, and makes use of a 28 nm design. It features 1792 SPUs, 112 TAUs, 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 280		250 Watts
	Difference: 187 Watts (297%)

Memory Bandwidth

Performance-wise, the Radeon R9 280 should in theory be quite a bit better than the Radeon HD 6670 (OEM) 1GB in general. (explain)

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

Texel Rate

The Radeon R9 280 will be much (more or less 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

The Radeon R9 280 should be a lot (approximately 367%) faster with regards to AA than the Radeon HD 6670 (OEM) 1GB, and also will be capable of handling higher screen resolutions more effectively. (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: Bandwidth is the max amount of data (measured in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the 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 called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.