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[Official] The AMD Radeon 7800 Owners Club - Page 222

post #2211 of 4099
Quote:
Originally Posted by jellybeans69 View Post

+20% power using SappTrix , so obviously not stock.
Max i can bench 3dmark11 , as i was testing it yesterday is around 1215/1449 , this is not stable for games though. Also maximum graphic score i could get with Cpu being @ 4.2 and card at 1215/1449 - 7990 or so. If i'll have more time during weekend might bench it with cpu @ 5 ghz due to cold winter air now. And yes 12.11 beta 11
I'll edit my post when i get home with exact voltage of card.
Edit: Looks like card might be voltage locked @1.210 , power at 0 +20% or -20% doesn't seem to change it, tried monitoring trough hardwaremonitor/gpu-z. So seems like all my results were for stock volts. So i guess i was just lucky with high enough stock volts =/

Power setting does not adjust the voltage. it allows your card to operate within +/- % of the set voltage. Meaning it allows for fluctuations. You should always have it cranked up, that way your card can take more power and not have an issue. But it is not, itself, a voltage adjustment.

Meaning it could be at stock and be at +20%, as you have found out. If you want to adjust the voltage try GPU tweak. It is the ONLY program I have gotten to work in setting my 7850 voltage.

I also would suggest lowering your MEMORY oc, as I think you'll get higher scores/FPS memory checking starts to decrease performance at those speeds; the specific speed where your card starts to lose performance varies from card to card. Also if your OC is not stable for games, I would recommend you lower it anyway. Being unstable in any area can cause issues down the road.

Just my input man. Hope it all helps.

Quote:
Originally Posted by emeraldage View Post

Well I've never heard of that power allowance option causing instability it's more about voltages I thought. And I'm so jealous of you haha..

Why does CCC say I have 6 graphics cards? lol

As I've said the power allowance CAN cause instability, especially when overclock. If your card needs more power, but the power allowance doesn't allow for it, it can cause some issues.

Also those 6 things look like cards but they're actually catalyst PROFILES that you can set and change and whatever. They're all your card.


Hope I've helped you guys.
Edited by kmac20 - 12/21/12 at 10:15am
    
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post #2212 of 4099
^
Yeah already guessed so , is there any way of going past 1.225 with gpu tweak? As it allows max of 1225 , while my stock is already 1.21 and temps are not the issue? I was testing maximum benchability so thats why i said it was only good up to 1215/1450 , forgot to tune it down to playable settings and crashed Dota 2 within ~10 mins.
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post #2213 of 4099
Quote:
Originally Posted by kmac20 View Post

Power setting does not adjust the voltage. it allows your card to operate within +/- % of the set voltage. Meaning it allows for fluctuations. You should always have it cranked up, that way your card can take more power and not have an issue. But it is not, itself, a voltage adjustment.

the power control has nothing to do with voltage. its completely related to power supplied to board. if you have a HD 7970 Ghz with 250w TDP then +20% allows the power draw to go upto 300w. When you overclock if you don't max out power to +20% the clocks can be throttled .
Quote:
Originally Posted by jellybeans69 View Post

I was testing maximum benchability so thats why i said it was only good up to 1215/1450 , forgot to tune it down to playable settings and crashed Dota 2 within ~10 mins.

for testing stability Heaven,3D Mark 11, BF3, Farcry 3 can be used. they are quite demanding and can easily indicate if the overclock is unstable. 1200 Mhz is a very good overclock. make sure you monitor core and vrm temps.
Edited by raghu78 - 12/21/12 at 10:37am
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post #2214 of 4099
Quote:
Originally Posted by emeraldage View Post

So still having issues with my card if anyone knows the answer. Can't even get 1020mhz to stick anymore. Everything else is stock, after awhile it just randomly reverts to 860mhz which is stock clock, and never goes back until I restart... Just stupid drivers?

could be your power supply as its just over the min spec for the card.
post #2215 of 4099
Quote:
Originally Posted by raghu78 View Post

the power control has nothing to do with voltage. its completely related to power supplied to board. if you have a HD 7970 Ghz with 250w TDP then +20% allows the power draw to go upto 300w. When you overclock if you don't max out power to +20% the clocks can be throttled .
for testing stability Heaven,3D Mark 11, BF3, Farcry 3 can be used. they are quite demanding and can easily indicate if the overclock is unstable. 1200 Mhz is a very good overclock. make sure you monitor core and vrm temps.

So is there any way to get my card past 1.225v? Except bios flash that is.

I know it's good , i don't have VRM sensors so i can only monitor core temps either way they ain't the issue tongue.gif

Here goes as promised , please note cpu-z is showing low voltages due to C states enabled.

http://www.3dmark.com/3dm11/5299969




No matter how much vcore i gave cpu it didn't want to log on into windows with 5,3, even +0.6 offset and 1.9 pll mad.gif Please note , everything is on air , just opened balcony that's in my room thats why temps are so low from chilled air coming in. smile.gif
Edited by jellybeans69 - 12/21/12 at 12:21pm
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post #2216 of 4099
Count me in. I love my Sapphire 7850, especially since I got it for $200 after rebate. I am glad I stumbled across this club.

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post #2217 of 4099
Does the 7850 AMD OEM (reference card) suport voltage control?

Im going to buy 2 for crossfire with watercooling so the cooler doesn't matter for me, I'm just buyng the cheapest card

Tnx
post #2218 of 4099
Quote:
Originally Posted by andrenoites View Post

Does the 7850 AMD OEM (reference card) suport voltage control?
Im going to buy 2 for crossfire with watercooling so the cooler doesn't matter for me, I'm just buyng the cheapest card
Tnx

They all only go up to 1.225V

There is no card out there that can go higher i think......

Btw, WC on these cards look good but they wont help you getting a higher overclock at all, the heat from these cards is nothing and even the crappy reference cooler on it can handle that and it doesnt matter how high you OC them.
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post #2219 of 4099
ya sry i wrote voltage instead of power on that second line. Mis-typed. Rest was correct (I said power after ).

1.225V is a lot for that card.
    
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post #2220 of 4099
I already have the WC system with 2 GPU blocks from EK

Since they all have voltage control then I will order 2 x AMD OEM 7850 2GB

I can buy them for 165€ each, at 330€ is much more powerfull and cheaper than a single 7970

Don't you think it's a good deal?
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