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

Intro

Compare all of that to the Radeon R9 280X, which features a clock frequency of 850 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 384-bit memory bus, and makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

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

In theory, the Radeon R9 280X will be 350% faster than the Radeon HD 6670 (OEM) 1GB in general, 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 should be a lot (more or less 467%) faster with regards to anisotropic filtering 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

The Radeon R9 280X should be quite a bit (approximately 325%) better at anti-aliasing than the Radeon HD 6670 (OEM) 1GB, and also should be capable of handling higher resolutions while still performing well. (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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 number of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.