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GeForce GTX 550 Ti vs Radeon HD 6770 1GB

Intro

The GeForce GTX 550 Ti features a GPU clock speed of 900 MHz, and the 1024 MB of GDDR5 RAM runs at 1026 MHz through a 192-bit bus. It also is comprised of 192 SPUs, 32 TAUs, and 24 Raster Operation Units.

Compare those specifications to the Radeon HD 6770 1GB, which features core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 800 SPUs along with 40 TAUs and 16 ROPs.

(No game benchmarks for this combination yet.)

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

In theory, the GeForce GTX 550 Ti should perform quite a bit faster than the Radeon HD 6770 1GB overall. (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 much (more or less 25%) more effective at texture filtering 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%) faster with regards to anti-aliasing than the Radeon HD 6770 1GB, and able to handle higher screen resolutions without losing too much performance. (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

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

Model GeForce GTX 550 Ti Radeon HD 6770 1GB
Manufacturer nVidia AMD
Year March 2011 January 2011
Code Name GF116 Juniper XT
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe x16
Memory 1024 MB 1024 MB
Core Speed 900 MHz 900 MHz
Shader Speed 1800 MHz (N/A) MHz
Memory Speed 1026 MHz (4104 MHz effective) 1050 MHz (4200 MHz effective)
Unified Shaders 192 800
Texture Mapping Units 32 40
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 116 watts 108 watts
Shader Model 5.0 5.0
Bandwidth 98496 MB/sec 67200 MB/sec
Texel Rate 28800 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 14400 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better 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 can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max 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..:)
[...] 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
[...] 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.
[...] 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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