GeForce GTX 550 Ti vs Radeon HD 7770

Intro

Compare those specs to the Radeon HD 7770, which features GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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 7770		3180 points
GeForce GTX 550 Ti		1897 points
	Difference: 1283 (68%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 36 Watts (45%)

Memory Bandwidth

Theoretically, the GeForce GTX 550 Ti should be much faster than the Radeon HD 7770 in general. (explain)

GeForce GTX 550 Ti		98496 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 26496 (37%)

Texel Rate

The Radeon HD 7770 is much (approximately 39%) better at AF than the GeForce GTX 550 Ti. (explain)

Radeon HD 7770		40000 Mtexels/sec
GeForce GTX 550 Ti		28800 Mtexels/sec
	Difference: 11200 (39%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 550 Ti is the winner, by far. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 5600 (35%)

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 maximum amount of data (counted in MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number 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 fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.