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GeForce GTX 550 Ti vs Radeon HD 6770

Intro

The GeForce GTX 550 Ti makes use of a 40 nm design. nVidia has clocked the core speed at 900 MHz. The GDDR5 RAM runs at a frequency of 1026 MHz on this particular model. It features 192 SPUs along with 32 TAUs and 24 Rasterization Operator Units.

Compare those specifications to the Radeon HD 6770, which comes with a core clock speed of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is comprised of 800 SPUs, 40 Texture Address Units, and 16 Raster Operation 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 theoretically be a lot superior to the Radeon HD 6770 in general. (explain)

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

Texel Rate

The Radeon HD 6770 should be much (about 25%) better at anisotropic filtering 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

The GeForce GTX 550 Ti should be much (more or less 50%) faster with regards to AA than the Radeon HD 6770, and also able to handle higher resolutions better. (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: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 processed per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, 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 the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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 rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum 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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