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post #11 of 31
Quote:
Originally Posted by blkdoutgsxr View Post

Also I have a couple questions regaurding cards
1. If I get another 5850 and have it non reference, can I overclock them to different clocks and see an advantage?

2. Will my 965 @ 3.7 bottleneck either xfire 5850s or a 6950?


Also, how do I know what 6950s are reference for voltage overclocks? Please link any suggestions

1. As I understand it, in crossfire the 2nd card will take the clocks from the first card in order to match.

2. not at any perceivable level...probably would "bottleneck" crossfire 6970's at some ridiculous framerate of like 230 something which you'd never be able to see anyway

Reference designs are ones that maintain the release card's cooling solution and clocks with just the brand's sticker on the outside more or less.

I also find it hard to believe that there are many games out there that a 5850 will only do 19 fps on...maybe like metro 2033 completely maxed out or something
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post #12 of 31
Thread Starter 
For the reference design, I'm just trying to see which ones are currently ref, I thought the xfx 5850 was a ref but it is not, ie it wont let me play with voltages like other 5850s



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post #13 of 31
I could be wrong, but I don't think many reference cards let you play with the voltage unless they are from asus or msi, or you flash a different bios on to it
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post #14 of 31
Thread Starter 
Quote:
Originally Posted by trulsrohk View Post
I could be wrong, but I don't think many reference cards let you play with the voltage unless they are from asus or msi, or you flash a different bios on to it
From what I know all reference cards will with MSI afterburner 'enableoverclocking1' mod
post #15 of 31
I stand corrected...must learn to filter what I read better sometimes.
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post #16 of 31
Quote:
Originally Posted by trulsrohk View Post
I could be wrong, but I don't think many reference cards let you play with the voltage unless they are from asus or msi, or you flash a different bios on to it
All reference 5850's have voltage control. Reference means they are all built using ATI's original reference design so they are all made the same.

The original question is one i have been asking myself for a while now and I've come to the conclusion that buying a second 5850 is definitely the way to go. Considering how cheap they can be purschased second hand balanced with the performance increase (only a few fps below a single 580 and blows a 6950 away). As for bottlencking on your cpu I seriously doubt it at those clocks.
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post #17 of 31
5850 Crossfire user here, No regrets from me at all

You're CPU will hold them back but only in certain circumstances which you won't notice for 95% of the time.

Also my 5850's aren't reference and reviews said they have no voltage control ability...

I can change Voltage with Sapphire Trixx
Edited by almighty15 - 2/27/11 at 4:22am
post #18 of 31
Where are you getting the information that his cpu will be a bottleneck? Got any benchmarks please?
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post #19 of 31
Quote:
Originally Posted by fashric View Post
Where are you getting the information that his cpu will be a bottleneck? Got any benchmarks please?
I said it would for around 5% of the time or less.... God I wish people would learn to read

And information? It's called PERSONAL experience, In some rare instances my CPU that's more over clocked then his does cause slow down because it can't keep up.

But as I said these are few and far between.....
post #20 of 31
Wow chill out mate, was just asking because I'm interested for my own future reference. Was hoping you had some benchmarks where this had been tested. Honestly its fine that its from your own experience learn to be a little less defensive
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