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Maximum 5850 clocks?

mobius1

mobius1

mobius1

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Joined
18 Oct 2009
Posts
135
Location
Liverpool
Not sure if there's already a thread on this

but does anybody have one and has overclocked it to its full potential?

Currently on 815 and 1195

seems decent but I feel the need for more :)

Cheers
 
hi

i think a lot of people are getting 1gig on the core and about the same as you on the ram . ive not tried pushing mine yet . only had it to 775/100 so far

cheers
 
My max OC at stock volts seems to be 825/1200.

How much would I need to up the volts to get 950Mhz on the core?
 
Are different make cards different? Or is it heat that's the limiting factor in some of these. I'm really tempted to overclock mine, but I don't have the guts to do it. Given that its the single most expensive component I've ever bought.
 
1100/1300 is my max but that's on water at 1.3v

However, it wasn;t worth the cost of the waterblock except for silence as on stock cooler with voltage adjusted, 1050/1300 was my max.

1000 is easy with just a small voltage bump. 1000 to 1100 in stages needs more and more voltage.
 
Its either to do with the fact that you can't help messing around with stuff (like me), or you want the maximum the card can do, or another reason - feel free to add your own.
 
albert said:
daft question but why would you want to overclock this card....

It plays everything maxed out at stock speeds ......
Click to expand...

Value for money or getting the best out of your hardware?

Lets face it a 5850 running at 1000/1300 which is so simple to do and practicularly every one is capable of doing it, makes it as quick or quicker than a stock 5870.

At 1100/1300 it certainly is quicker and hence is on par with a gtx295.

Therefore why run your 5850 at stock when you can have gtx295 performance for free?

Also depending on res, a stock 5850 does not run everything maxed out.
 
I'm running 825/1170 now at stock volts (1087) yet MW2 seems to crash at the moment so I'm wondering if highering the voltage will solve this?
(sorry if it's a noob question :P)
Cheers
 
Last edited:
mobius1 said:
I use MSI Afterburner
Click to expand...

Me too. And the lastest beta version you can download a furmark based stability testing tool as well.

Mobius, tweak the voltage up slightly. I found with my card I had to do that at stock clocks just to avoid the GSOD anyway.
 
Using afterburner i use 1.125v for 825/1150, 1.162v for 850/1250 and 1.175v for 900/1300. 1000 on the core is tough for me - even at 1.3v it's not stable.

Keep an eye on or vddc temps (gpu-z shows them) when upping the voltage - they can get above 100C if you dont have a custom fan profile set.

BFBC2 responds nicely to the OC with this card. 900/1300 with c2q at 3.6 gets ~70fps average at 1680x1050 4xAA 8xAF, all high, HBAO off.
 
I got mine up to 900/1300 at 1.175v, temperature stabilises around the 75 degree mark at full load with the fan at 40% (which is still reasonably loud).

I'd try to push it further but there'd be no point as it'd mean higher fan speed and hairdryer noise territory. :p
 
I set my card to the clocks Raves said (1162 for 850/1250) and a section (all along the bottom, about 1/6th of the screen, was just flickering and jumping so I immediately set them back, running on 1125 for 825/1150 for now so I'll see how that goes :)
 
Right, tried to overclock my 5850 to what Raves put (1.125v for 825/1150) Change everything on msi afterburner and click apply and the voltage stays the same and the clocks reset to normal. Am I been silly and missing a step or something?
 
I got my 5850 at 870/1200 with stock voltage. Mind you it is the XXX edition so it has been factory OCed slightly anyway. I've used FurMark's stabilty test and played BC2 beta for few hours, no issues.

The thing you should know about overclocking 5850 that's not made by MSI using MSI afterburner without flashing the GPU's bios, is that you loose powerplay (ie no power-saving mode, your card will run at the speed you set in afterburner in 3D and 2D, which means higher temps and shorter life span). I only use Afterburner when playing games, so in web-browsing or general 2D stuff I still got CCC's powerplay.
 
RBL said:
The thing you should know about overclocking 5850 that's not made by MSI using MSI afterburner without flashing the GPU's bios, is that you loose powerplay (ie no power-saving mode, your card will run at the speed you set in afterburner in 3D and 2D, which means higher temps and shorter life span). I only use Afterburner when playing games, so in web-browsing or general 2D stuff I still got CCC's powerplay.
Click to expand...

You are supposed to set up 2 profiles, one stock and one OC so Powerplay can still work. Afterburner detects 3D applications and switches to your OC profile, then loads your stock settings back once all 3D apps are quit. Powerplay will then kick in like normal. No need to load Afterburner every time you play a game.

I have mine @ 1050 / 1200 / 1.3v. Will try for more this afternoon, however I don't see the point of clocking the memory at all - it makes no difference and creates an unnecessary point of failure for your OC, PLUS it's hard to tell when the error detection is kicking in, resending data and causing framedrops.
 
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