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01-27-2021 05:42 PM #11New ROGer Array yanivfridman PC Specs
yanivfridman PC Specs Motherboard Asus ROG Crosshair VIII Dark Hero Processor 5950X AMD Ryzen 9 Memory (part number) HX436C18FB3K4/128, Graphics Card #1 RTX 3080 EVGA Ultra Monitor Dell u3415w Storage #1 WD SN850 2TB Storage #2 WD SN850 1TB CPU Cooler Noctua NH D15 Case Define R6 — Fractal Design Power Supply EVGA 1000 P2
- Join Date
- Nov 2018
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UPDATE: I received my 5950x RMA replacement yesterday, six weeks after I started the RMA process. I have been testing for the past 8 hours. So far everything seems stable at bios default settings and DOCP 3600. No random reboots at idle compared to the previous cpu.
The new processor is from the same batch as the previous one, 2043PGS
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01-27-2021 08:50 PM #12ROG Enthusiast Array
- Join Date
- Mar 2012
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I've "fixed" 3 5000 series systems with curve optimizer, all where having random reboots at idle and was very difficult to run at DOCP settings or some memory OC. Basically the issue is that 1 or more cores are unstable at the stock voltages/curves.
To identify the weak cores is easy, start by undervolting 1 at time or half of them and identify which cores are unstable (undervolting will exaggerate the issue, making it more easy to spot the weak cores). Then use curve optimiser to give these weak cores a curve positve value of +5-10.
Of cause you can RMA the processers since this is obviously bad QA/QC by AMD but that takes time
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03-07-2021 05:28 PM #13ROG Enthusiast Array Wayâ„¢ PC Specs
Wayâ„¢ PC Specs Motherboard ASUS Maximus X670E HERO Processor AMD Ryzen 9 7850X Memory (part number) F5-6400JJ3239G16G Graphics Card #1 ASUS RTX 4090 OC Monitor Alienware AW3824 Storage #1 Samsung 980Pro 2TB CPU Cooler NZXT Kraken Z73 Case Lian-Li 011 Dynamic EVO Power Supply Corsair AX1600i Keyboard Logitech G915 Lightspeed Mouse Logitech G Pro Lightspeed Headset Logitech G Pro X Lightspeed Mouse Pad Logitech G840 XL Headset/Speakers Logitech Z906 5.1 OS Windows 11 Accessory #1 Elgato Stream Deck Accessory #2 Elgato Camlink 4K Accessory #3 Blue Yeti X
- Join Date
- Sep 2013
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Quick reply for the guys struggling with constant random reboots ...
I've tested a 5950x on an ASUS Crosshair VIII Hero in the following configurations:
All settings not mentioned at left at default values
DOCP Enabled
Mem @ 3600Mhz C14
Voltage Auto
SOC 1.1v
Fmax Enhancer Enabled
PBO Enabled
No issues or reboots experienced
Running the same CPU installed on a Crosshair VIII Dark Hero i was experiencing random reboots during idle / light load straight off the bat. I started looking at which settings could be causing this in the BIOS and found that disabling Fmax Enhancer immediately stopped the random reboots.
I haven't spent any time trying to figure out why this is happening, but i would suggest if you are experiencing the reboot issue, to disable this.
Having PBO enabled didn't affect the rebooting, it was only the Fmax enhancer.
Best of luck to you all out there, chances are there's nothing wrong with your CPU and it's something to do with power delivery and Fmax enhancer.
May the force be with you !
CP out
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