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2x 5770's or 1x 5850?

TaKeN said:
I'm sorry but I'm going to correct you here.. its called Crossfire not SLi ;)

Lots of people here are Happy with their 5770 Crossfire setups, I've not found one review that suggests 'Choppy Framerates' or naff performance from them.

Yet the 5870 & 5850 owners seem to make out that the 5770 CF suffers from this.

We need Martin1991? in here.. he sold his 5870 and bought 2 x 5770s.
Click to expand...

Well I sold my crossfire 5770 setup, performance was good but... if you pplay a lot of fps like I would avoid crossfire or SLI altogether. When you get flash banged in CSS/cod4/mw2 etc the screen flickers uncontrollably for the duration of the flash. Googled revealed this is a product of dual graphics cards and nothing can be done.

If this doesn't both you, buy away as 2 x 5770's were great. Although made no visible difference in the games I play outside of benchmarking :)
 
Oxy said:
Well I sold my crossfire 5770 setup, performance was good but... if you pplay a lot of fps like I would avoid crossfire or SLI altogether. When you get flash banged in CSS/cod4/mw2 etc the screen flickers uncontrollably for the duration of the flash. Googled revealed this is a product of dual graphics cards and nothing can be done.

If this doesn't both you, buy away as 2 x 5770's were great. Although made no visible difference in the games I play outside of benchmarking :)
Click to expand...

Good call :) also some older games don't support CF very well
i have lots of old games i still love to play.
I also play a lot of FPS games

It's true tho twin 5770's give worse minimum frames per second. That is more important to me than maximum anyday or anyway i look at it

imagine your playing cod 4 you get flash banged screen flickers, frames per second droops to the 20 mark

now if that had been a single 5850/5870 it would have been a different story.

i was gonna go the twin 5770 route myself but reading all the stuff all over the web really put me off.
 
Although the CrossFireX configuration built out of two Radeon HD 5750 was overall superior to the single Radeon HD 5850 and the two Radeon HD 5770 were faster than the single Radeon HD 5870, I wouldn’t say that they are preferable. The problem is that the CrossFireX tandems are often inferior in terms of bottom speed due to the AFR rendering mode and 128-bit memory bus. The latter shows up in high-quality modes and at high resolutions. So, while CrossFireX boosts the average frame rate to the level of top-end graphics cards, the bottom frame rate remains rather low. And it is the bottom speed that determines the level of playing comfort.
 
Wasnt the flashbang flicker due to drivers, as im allmost sure its in the release notes for the latest drivers from ATI

Edit, cant see it in the release notes, so i must be mistaken, hopefully this issue will be fixed soon though as looking forward getting this title.
 
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bigjimmyauk said:
It wouldn't 45 minutes is nothing in the long run, run furmark for 6 hours, then do a furmark burn for a while with VPU recover enabled. I doubt your card will last 6 months (what make is it)
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But why do this!!!
Any card put under unreal amount of stress would be in danger of failing, in normal usage there is a 99% chance it wouldn't.
As for the 5850 is a 5870, this obviously isnt true as you can clock them both, is the 5850 better value of course it is i wouldnt buy a direct x 11 card until i see what nvidea come up with (and there are more than 5 games)!! personally i wouldn't pay over £200 for a GFX card, tbh there's nothing my 4890 O/C to 1000/1200 (under water) can't play at max on my lil screen.
to the OP there will always be more problems with xfired cards i would go for the best single card solution you can afford, you can always xfire later if you feel the need, but there will always be a better card just round the corner.....games haven't yet caught up with the power we now have in our PCs due to 95% being console conversions this sorry state of affairs doesn't look like changing, we will never see another Crysis situation and GTA4 was just badly optimised for PC and there the only games that would push last gens top cards.


Rant over :)

sayso
 
Nothing is wrong with the 5870, it's the price difference between the 5850 and 5870 for what is a very minimal performance gain that makes it very unattractive for us consumers to buy. A 5850 on it's own will eat through any games with max setting on 1900x1200 resolutions!

My honest opinion is, if you don't care about the cost and just want the best, then crossfire a 5870. If you want to cut down the cost for other things but still want similar 5870x fire performance, go and x fire a 5850. As for single card option, the idea is the same, if you want the best and not fussed with the cost, then get a single 5870. I wouldn't bother with x firing the 1st generation dx11 card "5770" even though it is cheap.

Bear in mind that you will need at least a 600w PSU and have your CPU set to run at 3Ghz+ in order for if not to bottleneck the x fired 5800 cards.
 
by the way my crossfire 5770's perform very good in high graphics settings in dirt 2, if set to ultra it can get a little stuttery but im more than happy with the graphics on high and the way it plays is perfect all the way through.
but i think even the 5850/5870 are not silky smooth with everything set to ultra, please correct me if this is not the case, all you 5850/5870 owners.
 
hyperst said:
Wasnt the flashbang flicker due to drivers, as im allmost sure its in the release notes for the latest drivers from ATI

Edit, cant see it in the release notes, so i must be mistaken, hopefully this issue will be fixed soon though as looking forward getting this title.
Click to expand...

I think it's in all FPS's, it isn't a driver issue from what I read. Something about the way SLi/Xfire has to split the data between the cards.


Drivers can't fix it is the short of it.
 
bigjimmyauk said:
what a load of **** they don't consistantly outperform the 5870 there are plent of test out there that prove that think you talking about the fact the 3 main testers alll use nearly the same set-up and games/benchmarks to test lets face it what are the common ones

crysis,far cry,cod,vantage u know them all

it makes me laugh you cf5770 owners never seem to mention the minimum frame rates the 5870 out performs the 5770CF on nearly all but a few test
think i'd sooner have the gpu thats gives me better min FPS and maybe 2-3 less fps max
Click to expand...

I have been meaning to reply to this but xbitlabs site has not been working correctly till now

Crysis - min fps is no more than 5fps slower than a 5870 and is actually higher at lower res with no aa
http://www.xbitlabs.com/articles/video/display/radeon-hd5770-hd5750-crossfirex_7.html#sect1

Far cry - Min fps upto 15fps higher on the cf5770 setup with no aa, with aa its equal.
http://www.xbitlabs.com/articles/video/display/radeon-hd5770-hd5750-crossfirex_8.html#sect2

Vantage, not that its a game you can actually play... 700 points in it.
http://www.xbitlabs.com/articles/video/display/radeon-hd5770-hd5750-crossfirex_6.html#sect2
oh and see how the cf5770 beat the 5870 at heaven.

And look 2 games that shows the 5870 with lower min framerate than cf5770
http://www.xbitlabs.com/articles/video/display/radeon-hd5770-hd5750-crossfirex_10.html

and to summerise, looks like more win to the cf5770.
http://www.xbitlabs.com/misc/pictur...hd5750-crossfirex/diagr/22_57vs58_big.png&1=1
 
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I would definitely go for the one card option.

Reasons for this.

1. Many games do not support crossfire, therefore you will only get the performance of one 5770.

2. The Power requirements of your PC will be considerably more crossfiring two cards. As will the heat in your case. So your electric bill will go right up, and you will notice the heat in the summer months.
 
I spent all me cash getting a bigger case, then the prices went up :( now i got to wait even longer till they come down again :( £300 was a steel at launch
 
hyperst said:
Wasnt the flashbang flicker due to drivers, as im allmost sure its in the release notes for the latest drivers from ATI

Edit, cant see it in the release notes, so i must be mistaken, hopefully this issue will be fixed soon though as looking forward getting this title.
Click to expand...

It is drivers as it used to happen in CF on the 3XXX when they first came out & then fixed soon after in the drivers.
 
Here in the Netherlands lots of webstores are getting 5850's in stock now or soon, if you want one directly you can have them from 207 Pounds incl. vat... I heard Germany is getting a lot of them as well so maybe soon UK (ocuk) is getting a lot of them to? Most webshops put around 30 Pounds on top of the normal price when they get stock here, some shops don't.

I can get a 5770 for 107 pounds so 2x 107 = 214 pounds
1x 5850 = 207 pounds

I'll go for the 5850 ;)
 
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Anth said:
I would definitely go for the one card option.

Reasons for this.

1. Many games do not support crossfire, therefore you will only get the performance of one 5770.

2. The Power requirements of your PC will be considerably more crossfiring two cards. As will the heat in your case. So your electric bill will go right up, and you will notice the heat in the summer months.
Click to expand...

These are the same answers so many give and they are simply not true.

1. I have search a lot for games that don't support crossfire and can only find lists with a handful of older titles that a single 5770 would run easily anyway.
If its really an issue simply use agentgods ATI CrossFire Xtension program that uses profiles to force crossfire on any game (i think ati are doing profiles in the next catalyst).

2. CF5770 consume 20-30w more than a 5870 depending on what review you look at, hardly going to make your bill shoot up. 5770's are also quieter than a 5870 i cannot hear mine above cards above my low speed case fans, in reviews the 5770 is about 2-3db quieter. Temperature wise my top card peaks at about 65 degrees.

http://www.xbitlabs.com/articles/video/display/radeon-hd5770-hd5750-crossfirex_13.html#sect0
 
bigjimmyauk said:
I now have £200 for a new gpu after todays auction sales But i'm not buying into anything and i'm stuck with a 2600XT lol
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Thats your choice big jimmy. From what I can gather for the last two weeks you have tied yourself in knots looking for the ideal card. Its well spoken about that generally people posting on this forum have problems with their hardware. It can look like certain graphics cards have a lot of problems, whether it be single or crossfire and at one point the 5850 seemed to have some problems and then the 5770. I don't buy into all that, in my opinion most people are having no problems but few post to tell you that. It doesn't matter what you buy just now, 5850\5870\5770 CF, chances are you'll have no problems like me and many others and they are all good cards. Just make your choice and enjoy as the perfect card does not exist.:)
 
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