What kind of case do you have and how is your airflow within? The switch from a 1080 to 3080 will introduce more heat into the case and some of that heat is being exhausted directly over the RAM area. If your RAM was already close enough to its limit then even a small amount of additional heat may well have been enough to cause these issues as you suspect. Is your CPU air or water cooled as this can make a difference to how this heat is handled.
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New 3080 and suddenly problems
- Thread starter opethdisciple
- Start date
Case is a P400a and being winter a chilly ambient temperature as well.
I always run my case fans fill speed for max cooling.
I always run my case fans fill speed for max cooling.
Soldato
- Joined
- 6 Jan 2012
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4 rails on mine and works fine, mind you 40A each rail.
Is your cpu air or water cooled?
It may be something as simple as the 3080 running in PCIE 4.0 through lanes that are connected to the CPU and putting more stress on the Infinity Fabric/Data Fabric. If I ever get a 3080 I know that my 3600MHz RAM might become unstable with my 3900X as it's on the limits of stability right now (I had to adjust my VDDG and VDDP to get it stable but it's as stable as a rock now with my 1080).Yes it's high. But the cpu will never boost that high before it hits one of the pbo limits.
It's not the CPU that's the problem it was my ram overclock. I've toned it down to cl16 and so far it's all good.
But it makes me wonder why it worked before and now after installing 3080 it doesn't.
Heat?
But if that's the case what of ram sticks like the 8 Pack cl14 3600 ram that is 1.45v out of the box?
They gonna overheat too?
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Soldato
- Joined
- 21 Apr 2007
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- 2,544
tbh if its a P400a case with the fans cranked up it will blast the warm air out pretty damn quick
I think you need to turn PBO off and return your ram speeds back to their XMP profile, and keep the IF speeds sensible to see if that helps with stability first. If it does start to raise them back up one by one.
Air
Switching to CL16 ram timings seems (finger crossed) to have solved it.
You know what it's like though when you tinker. I keep wanting to put it back to CL14 and adjust more voltages.
Previously I left my VDDG and SOC on auto (it was fine)
But it's interesting you mention that because adjusting VDDG was something I was thinking of trying.
Ryzen Master documentation even says "when overclocking ram VDDG and SOC should typically start at 1.1v)
Have a look at page 39.
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Bah... you now I have to try it.
Cool, if heat related then this is likely to reduce any heat build up slightly. Sounds like you have it sorted though.
I was running my ram CL14 at 1.47v though.
At CL16 mine are now 1.35v.
But I keep asking this question... If I am getting what we imagine is temperature related instability on my ram, then where does that leave sticks like the CL14 8 Pack stuff that is 1.45v out of the box?
I've seen only one kit out there on the internet which is similar timings that is at 1.40v every other kit is 1.45v plus.
In my case I actually had to reduce VDDP to 900mV and VDDG to 950mV which are the stock settings. Counterintuitively, reducing these voltages to stock made the PC stable. My RAM is 32GB 3600MHz CL16 of Crucial Ballistix (4*8GB).You know what it's like though when you tinker. I keep wanting to put it back to CL14 and adjust more voltages.
Previously I left my VDDG and SOC on auto (it was fine)
But it's interesting you mention that because adjusting VDDG was something I was thinking of trying.
Ryzen Master documentation even says "when overclocking ram VDDG and SOC should typically start at 1.1v)
Have a look at page 39.
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Bah... you now I have to try it.
Soldato
- Joined
- 21 Apr 2007
- Posts
- 2,544
My Teamgroup 8pack CL14 3600 ram does what it says at 1.45v with its XMP profile in my system (x570 MEG Unify and a 5800X)
If you have 3200 CL16 ram set at 3600 CL14 and experiencing instability then.... sorry I don't mean to be mean but wtf?
I ran it at those settings for a year. Things changed only when I installed the 3080.
Yup, on my x370 I had to use 1.1v VDDG to get it to work.
When I bought my x570 I thought I had to use the same settings on my ram so set it to 1.1v on the VDDG. What was stable on x370 was no longer working on x570. Leaving VDDG on stock did the trick.
So that's the same experience as me.
1.1v SOC and 1.5v DRAM
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Cheers
This is the RAM model https://www.corsair.com/ca/en/Categ.../Vengeance-PRO-RGB-Black/p/CMW32GX4M4C3200C14
Its rated for XMP 3200 CL14, but it's running stable at 3600 14-15-15-30
As mentioned it does get a little bit toasty while gaming (50c), it's due to the GPU dumping 410w of hot air into the chassis, on my previous GPU it would sit at 40c. But the extra 10c hasn't caused any instability for me.
never the less I am moving the GPU to water cooling soon and expect the RAM temp will come back down again