Have two 5770's and will run them in crossfire. They need Crossfire bridge?

[The_Golden_Man]

Hey, you should know that when you mix red and green you get brown

http://www.enchantedlearning.com/crafts/Colormixing.shtml

Nahh... I get golden

 

[Gordon Freemen]

If there is a connector for a bridge, then use a bridge.

The only cards that are really meant to be run in crossfire without a bridge are the ones that don't have the bridge connectors on top anyway.

The ones without a bridge connector on top CANNOT be run in CF that's why they have no CF bridge. These are always low end cards that are not even worth it to CF such as 7750 ect because it would be cheaper to just buy a single card that would have more performance anyway. There are some version of the 7750 that do come with a CF bridge but I would highly recommend just getting a better card.

 

[The_Golden_Man]

2 x 5770 Crossfire@900/1250, P5Q-E. Q9650@4GHz, Catalyst 12.7 Beta

3DMark11 Performance: 5348

This is not bad at all. This is closing in on my dead GTX 570 score. 5770 in crossfire is clearly playing with the big boys. Also, look at this 6770 crossfire review. They are just a tad behind GTX 580 and faster than a GTX 570. 6770 is almost the same as mine 5770 cards.

 

[Gordon Freemen]

2 x 5770 Crossfire@900/1250, P5Q-E. Q9650@4GHz, Catalyst 12.7 Beta

3DMark11 Performance: 5348

This is not bad at all. This is closing in on my dead GTX 570 score. 5770 in crossfire is clearly playing with the big boys. Also, look at this 6770 crossfire review. They are just a tad behind GTX 580 and faster than a GTX 570. 6770 is almost the same as mine 5770 cards.

6770 is just a re branded 5770 they are the same card but a 6870 or 560 is still a better solution all around but 5770 CF is not bad at all.

 

[Red Hawk]

The 5770 is essentially half of a 5870, so I would expect two 5770s to perform as such.

 

[Gordon Freemen]

The 5770 is essentially half of a 5870, so I would expect two 5770s to perform as such.

5770 is alright for source games.

A GPU is not about conserving electricity it is about playing games LOL.

 

[Gordon Freemen]

The 5770 is essentially half of a 5870, so I would expect two 5770s to perform as such.

half is about right.
http://www.hwcompare.com/982/radeon-hd-5770-vs-radeon-hd-5870/

 

[Termie]

2 x 5770 Crossfire@900/1250, P5Q-E. Q9650@4GHz, Catalyst 12.7 Beta

3DMark11 Performance: 5348

This is not bad at all. This is closing in on my dead GTX 570 score. 5770 in crossfire is clearly playing with the big boys. Also, look at this 6770 crossfire review. They are just a tad behind GTX 580 and faster than a GTX 570. 6770 is almost the same as mine 5770 cards.

Great score. 5770 crossfire still has enough power to play most modern games.

 

[The_Golden_Man]

What's funny is that 6770's are the same as 5770's. And in Guru3D's test the 6770 Crossfire setup beats both the GTX 480 and GTX 570. Those IceQX Turbo cards have a 880/1250 factory overclock, but still. I've heard that 5770/6770 crossfire equals to 5870 and are slower than both GTX 480 and GTX 570. So only thing I can think of is that since Guru3D tested this in mid 2011 the Catalyst drivers had matured enough to allow the 6770 Crossfire setup to beat both the GTX 480 and the GTX 570.

 

[Termie]

That's not too surprising.

The problem for the 5870 was always that despite its impressive hardware, somehow it simply didn't reach its potential. It was twice a 4870, but didn't perform that way. Thus, you can sneak by with two 5770s and actually get better performance, which defies logic (as it has the hardware of one 5870 and the overhead of crossfire). Doesn't work in all games (BC2, for example), but it's still amazing.

Note that according to Guru3d, your 3dMark11 score would already beat the 570: http://www.guru3d.com/article/his-radeon-6770-iceqx-turbo-crossfire-review/19

Of course, I thought you weren't going to do any gaming on this system, so all this power doesn't really matter, does it?

 

[The_Golden_Man]

That's not too surprising.

The problem for the 5870 was always that despite its impressive hardware, somehow it simply didn't reach its potential. It was twice a 4870, but didn't perform that way. Thus, you can sneak by with two 5770s and actually get better performance, which defies logic (as it has the hardware of one 5870 and the overhead of crossfire). Doesn't work in all games (BC2, for example), but it's still amazing.

Note that according to Guru3d, your 3dMark11 score would already beat the 570: http://www.guru3d.com/article/his-radeon-6770-iceqx-turbo-crossfire-review/19

Of course, I thought you weren't going to do any gaming on this system, so all this power doesn't really matter, does it?

I think I said something like: I may play a game or two on it This PC is connected to my TV, so I may play a few games

But the cool thing about all this (which I've mentioned earlier in this thread), is the fact that this makes me a very special man. Since I'm on both the AMD and Nvidia team now, I don't get biased to either side I had tendencies to be an Nvidia fanboy I tried not to be, but I think I actually was a little biased towards Nvidia D: Now I can be a better man with regards to this "issue".