VDDC in sapphire Trixx on r9 290 vapor-x

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SHADE117

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Mar 14, 2014
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So I´m an overclocking noob this is the first time I´m overclocking.
I have a Sapphire R9 290 Vapor-X and I´m using Sapphire Trixx.
I haven´t touched the VDDC offset but I have managed to get 1150mhz on the core and 1490mhz on the memory with the VDDC set at the stock 25.
I have seen this card clock higher than that though: is it because of my VDDC setting?
How do I use it safely, If I max it out will I fry my card?
All the examples explaining VDDC in Trixx are on HD 7xxx series cards so I don´t know how similar the settings can be
also what exactly is the power limit setting in Trixx mine is set to 0, that can´t mean 0 power consumption?
(btw: yes I understand that some cards can clock higher than others)
Thanks for any advice in advance
 
Solution
unknownofprob
I realise that, though you could use an answer. The VDDC shouldn't be an issue, try putting the card under load and see what Voltage reading your getting. If quite low, when card is under load, increase the voltage when you have increased speed.

Also saw you wanted to know about power set to 0, this does not mean that power is at 0, this means you have not increased power from stock settings.
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unknownofprob

unknownofprob

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bumping is against the forum rules, try not to do it.

The R9 290 series cards are poor overclocking cards, I am extremely lucky to get mine to 1295MHz core clock stable, many get stuck at 1150Mhz core clock, and can't go any higher. i'd leave it at 1150MHz, some of the R9 290 cards can't cope very well with anything above.
 
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SHADE117

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sorry been waiting for a week though, but can you explain the VDDC I read somewhere that it can be maxed out no worries but that was on a HD7970
 
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unknownofprob

unknownofprob

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Oct 3, 2013
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I realise that, though you could use an answer. The VDDC shouldn't be an issue, try putting the card under load and see what Voltage reading your getting. If quite low, when card is under load, increase the voltage when you have increased speed.

Also saw you wanted to know about power set to 0, this does not mean that power is at 0, this means you have not increased power from stock settings.
 
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Breelly

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I'm running the exact same card and have so far have 1200 on the core, 1510 on the memory and have the vddc set at 156. The card doesn't seem to get over 65 Celsius and haven't seen any artefacts yet. Vapor x are binned cards so they should be cherry picked from the best silicon but it's still pot luck if you get a good one. Yours was clocking better than mine at stock voltages. Good luck
 
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SHADE117

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Since this post I´ve played around with my VDDC but didn´t do more than 31 because my room was getting 27-29C hot and my card was in the high 70s, when the weather gets cooler I´ll try going higher on the VDDC.
My latest OC was 1140mhz core, 1500mhz memory at 31 VDDC -it was glitching in firestrike so I quit
but seeing you went up to 156 I guess I was being very conservative ;)
 
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WINTERLORD

WINTERLORD

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I am wondering because I installed trix and VDDC starts at 850 and max is 1200 by default my gigabyte 280x windforce VDCC says its at 1200 what exactly is VDDC also how are u guys getting these low VDDC numbers when it starts at 850 and goes up what am I missing? and yes its VDDC im seeing not anything else has all the above gpu speed mem speed and vddc
 
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scullfire

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Mar 26, 2015
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gpu1210
mem clock 1505
vddc 156
power limit at 50

im using the trixx utility so i don't know if there is a difference other then mine not being the vapor mine is the r9 290x tri oc version its steady and running nice and cool and no gitches or anything if it was doing that thing fire strike maybe you should up it a little bit till you find the sweet spot
im pretty sure i could get more out of it but i've been running it this way all day for almost 3 days straight and gaming as usual i understand too why not to push it but i'm glad i did and i would like to go farther but if i do i'd need a cooler for it which i dont think it could be applied to this card. just ordered another one of these cards to maybe do a crossfire but i'm running on a new built from scratch rig before i would think about all that i need to boot my cpu which i'am gonna do as soon as i feel confident in the card and my adjustment
 
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