Radeon HD 6950 vs Radeon HD 7790

Intro

Compare all of that to the Radeon HD 7790, which features a core clock speed of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It is comprised of 896 SPUs, 56 Texture Address Units, 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 7790		4330 points
Radeon HD 6950		3240 points
	Difference: 1090 (34%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon HD 6950		200 Watts
	Difference: 115 Watts (135%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6950 should be a lot faster than the Radeon HD 7790 in general. (explain)

Radeon HD 6950		160000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 64000 (67%)

Texel Rate

The Radeon HD 6950 should be a lot (about 26%) better at anisotropic filtering than the Radeon HD 7790. (explain)

Radeon HD 6950		70400 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 14400 (26%)

Pixel Rate

The Radeon HD 6950 is much (more or less 60%) faster with regards to FSAA than the Radeon HD 7790, and should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 6950		25600 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 9600 (60%)

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 (counted in MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 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 by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's 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 output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.