GeForce GTX 550 Ti vs Radeon HD 6990

Intro

Compare those specifications to the Radeon HD 6990, which uses a 40 nm design. AMD has clocked the core frequency at 830 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this particular card. It features 1536 SPUs along with 96 TAUs 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 6990		5820 points
GeForce GTX 550 Ti		1897 points
	Difference: 3923 (207%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 550 Ti		116 Watts
Radeon HD 6990		375 Watts
	Difference: 259 Watts (223%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6990 will be 225% quicker than the GeForce GTX 550 Ti in general, due to its higher bandwidth. (explain)

Radeon HD 6990		320000 MB/sec
GeForce GTX 550 Ti		98496 MB/sec
	Difference: 221504 (225%)

Texel Rate

The Radeon HD 6990 will be much (about 453%) better at AF than the GeForce GTX 550 Ti. (explain)

Radeon HD 6990		159360 Mtexels/sec
GeForce GTX 550 Ti		28800 Mtexels/sec
	Difference: 130560 (453%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6990 is superior to the GeForce GTX 550 Ti, by a large margin. (explain)

Radeon HD 6990		53120 Mpixels/sec
GeForce GTX 550 Ti		21600 Mpixels/sec
	Difference: 31520 (146%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at 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 its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.