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GeForce GTX 550 Ti vs Radeon HD 6770 1GB

Intro

The GeForce GTX 550 Ti makes use of a 40 nm design. nVidia has set the core frequency at 900 MHz. The GDDR5 RAM works at a frequency of 1026 MHz on this specific model. It features 192 SPUs as well as 32 Texture Address Units and 24 ROPs.

Compare all of that to the Radeon HD 6770 1GB, which features a core clock frequency of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also features a 128-bit bus, and uses a 40 nm design. It features 800 SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB 108 Watts
GeForce GTX 550 Ti 116 Watts
Difference: 8 Watts (7%)

Memory Bandwidth

Performance-wise, the GeForce GTX 550 Ti should in theory be much superior to the Radeon HD 6770 1GB in general. (explain)

GeForce GTX 550 Ti 98496 MB/sec
Radeon HD 6770 1GB 67200 MB/sec
Difference: 31296 (47%)

Texel Rate

The Radeon HD 6770 1GB is quite a bit (approximately 25%) better at AF than the GeForce GTX 550 Ti. (explain)

Radeon HD 6770 1GB 36000 Mtexels/sec
GeForce GTX 550 Ti 28800 Mtexels/sec
Difference: 7200 (25%)

Pixel Rate

The GeForce GTX 550 Ti will be a lot (approximately 50%) better at FSAA than the Radeon HD 6770 1GB, and also able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
Radeon HD 6770 1GB 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

Radeon HD 6770 1GB

Amazon.com

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 1GB
Manufacturer nVidia AMD
Year March 2011 January 2011
Code Name GF116 Juniper XT
Memory 1024 MB 1024 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 (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units 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 in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Comments

11 Responses to “GeForce GTX 550 Ti vs Radeon HD 6770 1GB”
Anonymous says:

Which of these two would you get?

rasta says:

550..def..:)

upgrade placa video - My Garage says:

[...] GTX550Ti consuma cu 20W mai mult. da varianta cu OC, varianta stoc e aproape identica +5W Consum __________________ Din explozie de caucuic te nasti... si tot din explozie de cauciuc mori [...]

Tobias says:

The 550 generally outperforms This ATI card but it is a bit more expensive. The 550 is somewhere in between the 6770 and the 6850.. If you have a little extra cash to fork out. I would suggest getting a ATI HD 6850 Radeon. But as of this comparison with the 6770. Gtx 550 Ti is most definitely the winner.

Anonymous says:

People looking for a Graphics card. Should already have gotten a decent power supply(PSU) first. Power consumption should not be an issue.

Bob says:

hey admin I think that your specs on the 6770 are differing from the 6770s we know today, and changing them would ensure a fair comparison :) btw good job on the website

Ajutor. Placa video. - My Garage says:

[...] din plin diferenţa de 50 RON. Sursa o să ţină. Antec sunt surse OK. Uite o comparaţie la frecvenţe stock. Nu uita că GTX 550 Ti-ul de mai sus e overclocked. __________________ Nu răspund la [...]

Jeremy says:

the benchmark that you are showing is wrong, the 560 is at 33fps not the 550, the 550 is at 22, the 6770 is at 19 from toms hardware(these are from the specific cards i was looking at) http://www.tomshardware.com/charts/2011-gaming-graphics-charts/compare,2661.html?prod4973=on&prod5248=on

admin says:

Indeed you are correct. No idea how that happened, seems all the numbers in that entire benchmark got screwed up. I've deleted the whole benchmark and will redo later.

[NBA]Gpu 12k max For core i3 2100 - Page 4 says:

[...] PC , PS3 My PC Specs Monitor: Samsung LED BX2250 21.5" CPU: Intel i7 2600K 3.40Ghtz Cooler: Stock Motherboard: Asus P8Z68V-Pro Memory: 8Gb Vengence 2000htz GPU: Nvidia Geforce 560Ti TwinFrozr 1GB HDD: 750 WD Chassis: Haf 922 PSU: Cooler Master GX Series 750W Soundcard: Realtek 8.1 Channel Surround Sound OS: Window 7 Ultimate 64bit Originally Posted by Serious Sam Don't spread lies. 6770 is slower than 550Ti. Like i said both are good cards, performance totally depends on the drivers used by the software engine in this case may be its games.. check below benchmarks to be clear GeForce GTX 550 Ti vs Radeon HD 6770 1GB – Performance Comparison Benchmarks @ Hardware Compar... [...]

max says:

550 ti defiantly better

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