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GeForce GTX 550 Ti vs Radeon HD 6770

Intro

The GeForce GTX 550 Ti comes with core speeds of 900 MHz on the GPU, and 1026 MHz on the 1024 MB of GDDR5 memory. It features 192 SPUs as well as 32 TAUs and 24 Rasterization Operator Units.

Compare those specs to the Radeon HD 6770, which has core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 RAM. It features 800 SPUs along with 40 Texture Address Units and 16 ROPs.

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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

Theoretically speaking, the GeForce GTX 550 Ti should be quite a bit faster 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 a lot (about 25%) more effective 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

The GeForce GTX 550 Ti should be much (about 50%) better at anti-aliasing than the Radeon HD 6770, and should be capable of handling higher resolutions without losing too much performance. (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 largest amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out 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 outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach 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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