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HD 5850 (x3) TriFire? - Page 4

post #31 of 39
Quote:
Originally Posted by Vagrant Storm View Post

i think you'd be OK with your current CPU, but you should know that the third GPU added doesn't help as much as when you added the second. If I were in your shoes i would look into selling one or both of the GPUs and just going with one more powerful GPU.
Plus it seems that Crossfire and SLI are having more issues these days. You think it would be getting almost main stream, but it seems like there are more troubles today then there was a year ago.
If I was to buy a single GPU to play 1080P...I think i'd go with a 6970...or a GTX 580. A 6950 or 570/560ti might do the job too. You'll be fine as long as you don't want to max out Metro 2033
Quote:
Originally Posted by Vagrant Storm View Post

pretty much any CPU temp monitoring software will be compatible. I personally use some windows 7 gadgets for such things, but there are all sorts of monitoring software out there...just try some out and should find one that you like. The only difference is the display. Unless you dig up something that is really old, but that would be hard to do by accident.
Note that your CPU would probably have more troubles with 5850 crossfire than it would with just a single 6950. The crossfire takes some horse power to pull off.
Quote:
Originally Posted by Just a nickname View Post

The third card will only adds something between 25%-35% overall performance. Trifire scaling on 5000 serie is kinda bad.
With only 1Gb of Vram, this setup will be extremely limited by this, not by the GPUs power. So even if you cards can handle more, you won't be able to max everything as now most game require more than 1Gb Vram everything maxed.
So really, I would just stick with a single 5850 overclock it as much as you can. Hell, I am still able to max most of the game I play with my 5870! I will wait one more year or so, when the price of the current gen (7000 & GTX600) will drop, then I will probably buy a new card.
If you want to play Metro2033 *maxed* just disable Advanced DOF. I find this feature interesting but quite useless, it is just a FPS eater... The difference is quite minimal and isn't worth the huge amount of FPS you lose!

I'm of the opinion that not everything here is right.
In defense of tri fire, it actually solves most of the problems with a dual card setup, like I mentioned: micro stuttering and eve driver issues. The drawback would be power draw and head generation, obviously.

The scale is actually pretty good, as those 30% numbers doesn't really represent very well the reality.
What really happens is that a tri fire setup will have a minimum FPS much better than a dual card setup, which is more important than the maximum FPS, IMO.

Still, I wouldn't go with tri fire if I was OP simply because of his motherboard.

I would do:
1 - Buy aftermarket coolers for the 5850s, if there is room between the cards. And overclock the hell out of those cards (like 300 extra mhz on the cores). (consider that these aftermarket coolers will fit newer cards as well, so it's an investment)
OR
2 - Sell them and spend some more for a 7000 series card.
Quote:
Originally Posted by Wildcard36qs View Post

Yea I agree with everyone. Sell those 5850s for like $150 a pop and grab a 6970.

Actually 5870s are going for around 150USD shipped
5850s will have to be sold for less.

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post #32 of 39
Thread Starter 
yea I think Ill wait on the next gen....Now I just have to work on overclocking my CPU...not something I really want to mess with aside from CCC overdrive...because thats easy..
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post #33 of 39
Quote:
Originally Posted by EduFurtado View Post

I'm of the opinion that not everything here is right.
In defense of tri fire, it actually solves most of the problems with a dual card setup, like I mentioned: micro stuttering and eve driver issues. The drawback would be power draw and head generation, obviously.
The scale is actually pretty good, as those 30% numbers doesn't really represent very well the reality.
What really happens is that a tri fire setup will have a minimum FPS much better than a dual card setup, which is more important than the maximum FPS, IMO.
Still, I wouldn't go with tri fire if I was OP simply because of his motherboard.
I would do:
1 - Buy aftermarket coolers for the 5850s, if there is room between the cards. And overclock the hell out of those cards (like 300 extra mhz on the cores). (consider that these aftermarket coolers will fit newer cards as well, so it's an investment)
OR
2 - Sell them and spend some more for a 7000 series card.
Actually 5870s are going for around 150USD shipped
5850s will have to be sold for less.
Quote:
Originally Posted by Just a Nickname View Post

I'm of the opinion that everything here is right.

473

2.13/1.34 = 1.5895 so 59% performance increase for CF vs a single card
2.71/2.13 = 1.2723 sp 28% performance increase for CFX vs crossfire

If you have anything to back-up your statement, share it with us!

Average_Dual.jpg
Average_Tri.jpg
Edited by Just a nickname - 1/25/12 at 1:38pm
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post #34 of 39
Quote:
Originally Posted by Just a nickname View Post

473
2.13/1.34 = 1.5895 so 59% performance increase for CF vs a single card
2.71/2.13 = 1.2723 sp 28% performance increase for CFX vs crossfire
If you have anything to back-up your statement, share it with us!
Average_Dual.jpg
Average_Tri.jpg

All of those screenshots are of average FPS.
They don't mention minimun FPS.
They are also old.
Why would I want numbers after comparing to some other card?
They also don't represent the effect of tri GPUs on micro stuttering and driver issues.

I would have to google for the sources... If you want to do it, you are welcome. Just look for the latest ones, also look for "5870 tri crossfire review" or something like that.
post #35 of 39
I had 3x 5850s on a i7-920 @ 4.2 no bottleneck but the scaling still sucked and it wasn't worth it.

I never saw all 3 cards at 100% usage. the 3rd card would normally be around 50%.

I would recommend just hanging with the 2 and getting a nicer card with more memory in the future.
post #36 of 39
437
384


http://benchmarkextreme.com/Articles/Radeon%205850%20Trifire/Overall%20CF.jpg - this gy had micro stuttering but turned out to be not the card's fault. he was also running a 5970+5870 setup

unfortunetely I couldn't find the review I read that made up my mind about tri GPU setups on how they solve driver and micro stuttering issues.

I'm not just talking about the 5850s or 5870s, but about tri cards in general
post #37 of 39
Quote:
Originally Posted by EduFurtado View Post

All of those screenshots are of average FPS.
They don't mention minimun FPS.
They are also old.
Why would I want numbers after comparing to some other card?
They also don't represent the effect of tri GPUs on micro stuttering and driver issues.
I would have to google for the sources... If you want to do it, you are welcome. Just look for the latest ones, also look for "5870 tri crossfire review" or something like that.

Now you critic my source! Even on yours you barely see a 50% performance increase. I just don't understand why you stand on your position when the 5850 is getting useless, limited by its Vram... Whatever is the good numbers (either 30 or 50%) point is you won't get much from a third card. If you want to spend on something, spend for a new card with more memory. I think everyone can agree on that wink.gif
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post #38 of 39
Instead of taking another 5850 n do trifire sell ur 5850 n take single 7970 n after some time CF 7970 .
post #39 of 39
Quote:
Originally Posted by Just a nickname View Post

Just disable Advanced DOF and you will be fine on Ultra 1920*1080... This card is still quite capable lol

yeh my bad i lost track of what thread i was on, i thought this was the 6770 thread tongue.gif and yeh disable DOF, i honestly dont see a difference when i do, check my updated post, honestly your system prob had a CPU bottleneck more than anything else, getting a third card will not do much, OC your CPU i bet you will get noticeably more FPS thumb.gif
Edited by Pentium4 531 overclocker - 1/26/12 at 12:12pm
    
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