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[Official] AMD R9 390/390X Owners Club - Page 281

post #2801 of 11890
Quote:
Originally Posted by navjack27 View Post

sanity check. thx. http://www.3dmark.com/3dm/8662632
+50 core voltage
+13 aux
+50 power limit
1140/1650

How do you know when to start adding AUX voltage? For example why did you +13 aux instead of increasing the core voltage more?
post #2802 of 11890
okay, how i overclock.

start with memory at a known max, which is 1650.
start with core at factory overclock. which was 1100.
run with power limit at max, it don't hurt nuffin.
set up my fan curve to go up to 100% when its at 55c
set it up so it 0% at 40c
run a baseline benchmark

go up by 10mhz on core until i get a crash
go down by 5mhz and add +5 volts on core
keep adding the latched voltages until i get a run with minimal artifacts
keep going up on core mhz until i just don't feel comfortable anymore
aux, i'm still not sure about. i think its like voltage that helps the stability of the other voltages being supplied. but it never goes down when i run at full load. the core voltage fluctuates like CRAZY.
post #2803 of 11890
Quote:
Originally Posted by Noirgheos View Post

Alright, I've asked this multiple times, but I want a definite answer. The XFX is 10MHz less than the MSI. Will that even make a 1FPS difference?

Just buy XFX 390. The base one not the overclocked one becsuse the PCB might he different I'm not sure. The XFX has great cooling, a back plate and the card itself looks sweet PLUS ek has a waterblock for it. So if you ever decided to go full watercooling in the future then you can actually watercool your gpu. That's the problem I have right now....no waterblock for my nitro 390.
post #2804 of 11890
Quote:
Originally Posted by navjack27 View Post

sanity check. thx. http://www.3dmark.com/3dm/8662632
+50 core voltage
+13 aux
+50 power limit
1140/1650

my room is hot and it got to 75c on the card and around that speed, even with power play disabled it clocks down at or near that temp

going up to 1150/1650
+75 core voltage
+25 aux
+50 power limit
hit about 78-80c
no down clocking
some artifacts.
http://www.3dmark.com/3dm/8662741

Same here, cant pass 1150 when regular 390 does
post #2805 of 11890
Quote:
Originally Posted by Geoclock View Post

Same here, cant pass 1150 when regular 390 does

Yep, out of all the 390X cards, the MSI one seems to have the most failures, or issues.
post #2806 of 11890
Quote:
Originally Posted by Noirgheos View Post

Yep, out of all the 390X cards, the MSI one seems to have the most failures, or issues.

They have to fix cooling i guess and then we'll RMA it.
That's why they have on sale.
post #2807 of 11890
Only gained 46 points on 3Dmark with core clock @ 1200 from 1180 , thats the max I can get with msi afterburner. I thought the old 95w 8120 would hold me back, alot more , but was pleasantly surprised. For stock i run @ 1125 /1620 no core voltage.


EDIT: Next upgrade https://www.youtube.com/watch?t=24&v=3AtBE9BOvvk
Edited by bazookatooths - 9/22/15 at 8:41pm
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post #2808 of 11890
Quote:
Originally Posted by bazookatooths View Post

Only gained 46 points on 3Dmark with core clock @ 1200 from 1180 , thats the max I can get with msi afterburner. I thought the old 95w 8120 would hold me back, alot more , but was pleasantly surprised. For stock i run @ 1125 /1620 no core voltage.

Nice, what's your graphics scores look like?
post #2809 of 11890
Quote:
Originally Posted by Dundundata View Post

Nice, what's your graphics scores look like?

14065

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post #2810 of 11890
Personally I prefer running my Sapphire R9 390x at default clocks of 1055 / 1500 for gaming/daily use as I feel its more than enough for me and I can easily keep my core and VRM temps in the mid 60c's with a quiet fan Profile.

But this is overclock.net and "if everyone else jumped off a bridge....?" biggrin.gif

So this is just for fun of course.
Here is what I would consider my GPUs max limits of 1180 / 1700 with +100mv / 100% fan / +50% PWR
Any more on the core I get artifacts.
Any more on memory I get black screens.
GPU temp - 75c / VRM1 temp - 102c / VRM2 temp -98c (remember 100% fan speed & +100mv)
So there is no way on earth I'd even try using Trixx to get more voltage and try for 1200 core with these kind of VRM temps, besides as I said I think these kinds of overclocks have no real use for me anyway other than for testing, because I consider these clocks unrealistic for any prolonged use.
1180 / 1700 Firestrike

1100 / 1700 is what I would consider my GPUs "sweet spot" since I can hit that without a voltage increase while easily keeping the core and VRM temps under 70c with a quiet fan profile.
Now If I was told I had to overclock, these are the clocks I would personally choose for daily use.
So for those who were asking for 1100/1700 scores to use for comparison a few pages back, here is mine.
1100 / 1700 Firestrike

1140 / 1700 isn't too bad either but requires a mild voltage increase of +30mv....Anything over 1140 requires +50mv or more and my VRM temps start to climb fast.
1140 / 1700 Firestrike

Notice how my physics score actually goes down after 1100mhz on my setup? Odd

Anyway, I'm done "testing" and I'm back to gaming at my default 1055 / 1500 clocks and couldn't be happier for the perf/price I paid.
(I got my Sapphire 390x for $399 with free shipping and free Mad Max game on Newegg....I see the price is back up now and the MSI is now $399 instead, so one could assume that 4th QTR prices/deals should be even better yet)

If you could combine Sapphires core cooling with MSI or XFX VRM cooling, you'd have the perfect air cooled 390/390x IMO.
Edited by MTDEW - 9/23/15 at 6:33am
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