Maximum reccomended volts for a 5850

[bigjimmyauk]

Just curious what people call a safe limit. Now temps are not really a problem at all on my direct cu TOP inside my HAF 932 and temps even seem to be getting lower probably due to thermal paste settling in.

So do just wondered how far is a safe limit for voltage and how far is pushing your luck Think Smart doctors limit is 1.35 Volts

 

[jigger]

I overclock checking the heat and add voltage to keep things stable. Heat is the deciding factor for when I stop adding voltage.

 

[bigjimmyauk]

I overclock checking the heat and add voltage to keep things stable. Heat is the deciding factor for when I stop adding voltage.

So if heat is not a problem then 1.35 volts would be ok

i ask becaue i took my direct cue to 950/1200 while stable enought to benchmark crysis,eunigene 2.1 etc etc when gaming after about an hour of gaming it started artifacting so i upped the voltage to 1.28 and it was fine once again if i lower it back down below 1.28 it artifacts again after an hour or so.

pefectly stable at stock clocks and volts even looping benchmarks for 3-4 hours

 

[Phoenixdancer]

yea as long as the heat is below say 60c i WOULD NOT do this unless your on water.

Plus make sure the VRM's done go over 80c as they will heat up like a biatch under 1.35v

 

[bigjimmyauk]

yea as long as the heat is below say 60c i WOULD NOT do this unless your on water.

Plus make sure the VRM's done go over 80c as they will heat up like a biatch under 1.35v

i don't think my 5850 has VRM temp measuring

what does it come under in gpu-z

 

[Phoenixdancer]

im unsure but i think its number 2 or 3 under GPU temp...

 

[RavenXXX2]

VDDC are the volt regulators in GPU-Z.

 

[wolvers]

Looks like you have a non-reference card with different VDDCs. If you've got no temps sensor reading for them I would stay under 1.25v.

 

[bigjimmyauk]

Looks like you have a non-reference card with different VDDCs. If you've got no temps sensor reading for them I would stay under 1.25v.

yeah it's asus's own direct cu TOP i'll take what you said under advisement tho and try to see what i can get stable with as low as a voltage as possible.

When people say they use furmark to check for artifacts do they mean the one with the brown ring or are they talking about msi kombuster with the msi furry logo as of yet i've never seen kombuster artifact

 

[wolvers]

I never use my brown ring to check for artifacts

Seriously though, AFAIK they are one and the same.

 

[bigjimmyauk]

I never use my brown ring to check for artifacts

Seriously though, AFAIK they are one and the same.

made me laugh well i ran a 1920x1080 with 8xAA stability test @ 1.22v @950/1200 no artifacts after 20 minutes GPU temp was 69 degrees ran a few games and crysis,eunigene 2.1,resi 5,3d mark 06 all came back ok with no problems artifacts or anything.


Seems pretty stable will be playing some games tonight so will keep my eyes peeled. Whats a sign that the VRM's are overheating just in case

 

[Raves]

1.2 - 1.25 prolly safe if your core is <80C under load. Your vddc will prolly be at like 100C, which is about as far as I would push them. Some peeps say vddc thermal downclock occurs at 120C, but I wouldn't push it that far tbh.

Your cooler have sinks on the voltage regulators?

edit: I found that I got teh GSOD when my vrm's overheated.

 

[wolvers]

made me laugh well i ran a 1920x1080 with 8xAA stability test @ 1.22v @950/1200 no artifacts after 20 minutes GPU temp was 69 degrees ran a few games and crysis,eunigene 2.1,resi 5,3d mark 06 all came back ok with no problems artifacts or anything.


Seems pretty stable will be playing some games tonight so will keep my eyes peeled. Whats a sign that the VRM's are overheating just in case

That's a good clock, I'd be happy with that. I run both of my 5850s at 950 core.