RYZEN 5 1600 AF NEEDS HIGH VOLTAGE ON THE CORE
RYZEN 5 1600 AF NEEDS HIGH VOLTAGE ON THE CORE
I run this on 3.9GHz using 1.275V average but I have to raise it to 1.375V if I want 3.9GHz and the relationship is proportional. They run at 3.75GHz without any voltage, yet I had to add it. Why? If I don't give enough voltage, my monitor shows errors like no cable connected, no signal, or no display. USB ports on the back panel stop working too, as does the ethernet port. The GPU fans spin at full capacity and everything resets to default after a reboot. Why do I need so much extra voltage?
Well, it was just a guess but good to know it's an AF model anyway. And at any rate... do you see that line labeled "CPU Core Voltage (SVI2 TFN)"? That one is showing your core voltage around 1.075 volts right in the middle of the stress test. You're running heavy loads, which should be about 1.2 to 1.3 volts, maybe closer to 1.2 during small FFTs at P95, so it's no surprise you crashed. What does that voltage line look like when your computer is just sitting there idle? It probably will bounce around a bit, but focus on the maximum column. You don't want that going over 1.38 volts while it's not working hard. If you have to increase VCore above 1.41 volts, as long as...
First off is to understand "too high" a voltage is relative as every CPU is different, some with less leakage current that can function with lower voltage and some with more leakage current that needs more voltage. Second is that you need to make sure you're reading the same voltage reading as they are. In most motherboards you can read out Vcore which is the output of the VRM somewhere between between the capacitor bank and the CPU base, and there is SVI2 voltage which is the actual core voltage inside the CPU. At various loads they can be vastly different. And then there's something called 'VID' which isn't really a voltage readout at all but people erroneously use it anyway. Third is your motherboard VRM can have poor power delivery so you'll need a higher voltage to avoid low-side dropouts that make the CPU unstable.
First things first, my English isn't very good. I will answer you as soon as I figure out what's happening. If I get something wrong, don't worry, just say sorry. My motherboard is a Gigabyte B450M S2H. You know that "too high" goes with the word low because every CPU is different. Even though nobody passes over 1.4V and gets slow speeds like 3.7-3.8-3.9-4.0GHz, my mobo won't let me go higher than 1.41V. People suggest maxing it at 1.425V to get 4.2GHz on that voltage, but I can't even pull off 3.9GHz with just 1.4V. 😞 As I was going along, you seem to have checked the numbers wrong before. I watched some videos showing how to overclock and what values to use for my CPU and my mobo. Third thing is related already: Yes, I agree that my motherboard isn't great at over-cranking, but it doesn't mean I should never be able to do it.
First you need HWInfo64. That tool shows you the SVI2 core voltage. Next put a lot of work on your system, so use CPUz right now because it has a section for BENCH and STRESS that works well enough to begin with. Now just set the voltage at 1.41 or 1.425 V and clock speed at 3.9Ghz which is what you can achieve. Then run HWINfo and look at the SVI2 core voltage reading in Windows when it sits idle, and also under load during a CPUz stress test to see how much power your processor actually uses. EDIT: I just thought about one more thing though... do you have an AF? Did you get it inside a sealed box with a cooler? And did you check the heatspreader for marks? Also, turning AE's into AF's is probably easy with a certain kind of etching laser, but I haven't heard about that before or know if it would be worth it at all. I think HWInfo might help with some CPU info though.
I have an AF that's showing up on the screen and my CPUz report says it's a 12nm Pinnacle Ridge chip. I'm pretty sure this is what it is because HWInfo also confirms it. It was inside a sealed box with a cooler attached, but I couldn't get the rest of my setup to work right now. On prime95 small FFTs test, my PC crashed again at 1.41V and 3,9GHz settings.
It was just a thought but I'm glad to know it's an AF model. And anyway... do you see the line labeled 'CPU Core Voltage (SVI2 TFN)'? The one showing your core voltage at about 1.075 volts in the middle of the stress test? Running extreme heavy loads that should be around 1.2-1.3 volts, maybe closer to 1.2 for P95 small FFT's. So it crashed easily. What does that line read when idle? It will probably bounce a bit so just look at the maximum column. You don't want that going over 1.38V while idle. If you have to raise whatever you think is your VCore above 1.41 then it should be okay as long as the SVI2 TFN voltage isn't over 1.38V. When you get it down to about 1.38V when idle, and if it doesn't stay stable then you have to lower the clocks until it works better. And oh yeah, if it gets way too hot (like up to 90C or more) then you also have to lower the clocks until your cooling is better. So that's the voltage line you should look at now.
hi, good day. I'm new here and also brand new to overclocking Ryzen CPUs. Recently switched my computer from an old Intel i7-3770 to a newer Ryzen 5 1600 AF and decided to try doing an OC for gaming. A long time ago, I did OCs on LGA775 chips before the Ryzen era and got really good OCs on older CPUs like the 2500k back then. I was also running my i7-3770 at high turbo frequencies with only a little voltage overclocking.
I looked at this thread and found that HWinfo showed me an SVI2 TFN (a specific sensor value) for the CPU. Back in the day, I always checked core voltage using the app called CPUz. That's when it happened: my CPU seemed pretty bad just because it was getting an OC of 3800MHz at almost 1.4V in CPUz. But then I checked HWinfo and saw that the reading there was actually different by 0.1V compared to what CPUz showed me.
Now I'm confused: which one is right for Ryzen? In my BIOS, I also see a way lower voltage value than what I have in CPUz. The actual core voltage looks really high here. Under stress testing with OCCT at 3800MHz, the readings are quite different on screen: HWinfo shows about 1.287V while CPUZ reads around 1.363V and occt reads even higher at roughly 1.37V.
Question is which voltage should I trust more? Should I lower it down to match BIOS, or stick with what my sensors say in HWinfo since that's where the big jump from CPUz happened?