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GeForce GTX 550 Ti vs Radeon HD 6770

Intro

The GeForce GTX 550 Ti has a core clock frequency of 900 MHz and a GDDR5 memory speed of 1026 MHz. It also features a 192-bit memory bus, and uses a 40 nm design. It is made up of 192 SPUs, 32 Texture Address Units, and 24 ROPs.

Compare those specs to the Radeon HD 6770, which uses a 40 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory is set to run at a speed of 1050 MHz on this specific model. It features 800 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

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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

GeForce GTX 550 Ti 1897 points
Radeon HD 6770 1520 points
Difference: 377 (25%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 108 Watts
GeForce GTX 550 Ti 116 Watts
Difference: 8 Watts (7%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 550 Ti should in theory be a lot better than the Radeon HD 6770 overall. (explain)

GeForce GTX 550 Ti 98496 MB/sec
Radeon HD 6770 67200 MB/sec
Difference: 31296 (47%)

Texel Rate

The Radeon HD 6770 will be much (more or less 25%) better at AF than the GeForce GTX 550 Ti. (explain)

Radeon HD 6770 36000 Mtexels/sec
GeForce GTX 550 Ti 28800 Mtexels/sec
Difference: 7200 (25%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 550 Ti is a better choice, by a large margin. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
Radeon HD 6770 14400 Mpixels/sec
Difference: 7200 (50%)

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

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GeForce GTX 550 Ti

Amazon.com

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Radeon HD 6770

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 550 Ti Radeon HD 6770
Manufacturer nVidia AMD
Year March 2011 January 2011
Code Name GF116 Juniper XT
Memory 1024 MB 512 MB
Core Speed 900 MHz 900 MHz
Memory Speed 4104 MHz 4200 MHz
Power (Max TDP) 116 watts 108 watts
Bandwidth 98496 MB/sec 67200 MB/sec
Texel Rate 28800 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 192 800
Texture Mapping Units 32 40
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 1040 million
Bus PCIe 2.1 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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

Display Prices

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GeForce GTX 550 Ti

Amazon.com

Check prices at:

Radeon HD 6770

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Comments

8 Responses to “GeForce GTX 550 Ti vs Radeon HD 6770”
murcie says:

The Radeon HD 6770 has memory of 1024 MB not 512, as mentioned in the review.

Me says:

There's a separate 1GB version.

Subrat says:

That's true
I gb gddr5 version is available for Ati radeon hd 6770

Subrat says:

Nvidia geforce 550 ti requires Pci-e 2.0 not 2.1

Saurav says:

i want to know wheather 550ti in compaitable wth dual core processor . my mothebord's model is ASUS-P5KPL-AM-PS please help me

ghostblaster says:

the 1 gb version of the 6770 has a core speed of 850 mhz

ironphoenix says:

i just returned my radeon HD 6770 1GB and its core speed was 775 and 1000 im getting the 550 TI and its clocked for 950 and 4355

fahim says:

550ti is prefarable

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