Radeon HD 6970 vs Radeon HD 7770

Intro

Compare those specs to the Radeon HD 7770, which has a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 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 7770		3180 points
	Difference: 290 (9%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon HD 6970		250 Watts
	Difference: 170 Watts (213%)

Memory Bandwidth

Performance-wise, the Radeon HD 6970 should in theory be much better than the Radeon HD 7770 in general. (explain)

Radeon HD 6970		176000 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 104000 (144%)

Texel Rate

The Radeon HD 6970 should be a lot (more or less 111%) better at AF than the Radeon HD 7770. (explain)

Radeon HD 6970		84480 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 44480 (111%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6970 is superior to the Radeon HD 7770, by far. (explain)

Radeon HD 6970		28160 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 12160 (76%)

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 moved past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 texture map elements (texels) that can be applied per 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 better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.