Radeon HD 6670 (OEM) vs Radeon HD 6970

Intro

Compare that to the Radeon HD 6970, which features a GPU core clock speed of 880 MHz, and 2048 MB of GDDR5 RAM running at 1375 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 96 Texture Address Units, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 6970		3470 points
Radeon HD 6670 (OEM)		1120 points
	Difference: 2350 (210%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
Radeon HD 6970		250 Watts
	Difference: 187 Watts (297%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6970 should in theory be a lot better than the Radeon HD 6670 (OEM) in general. (explain)

Radeon HD 6970		176000 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 112000 (175%)

Texel Rate

The Radeon HD 6970 is quite a bit (more or less 340%) more effective at anisotropic filtering than the Radeon HD 6670 (OEM). (explain)

Radeon HD 6970		84480 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 65280 (340%)

Pixel Rate

The Radeon HD 6970 is quite a bit (about 340%) better at anti-aliasing than the Radeon HD 6670 (OEM), and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 6970		28160 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 21760 (340%)

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 (in units of MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.