The Ryzen 5 1600AF requires a high voltage at the output capacitance.
The Ryzen 5 1600AF requires a high voltage at the output capacitance.
People adjust the settings for 3.9GHz using 1.275V as a baseline, but I need to raise it to 1.375V if I want that frequency. It seems the relationship between voltage and frequency is proportional. During operation at 3.75GHz without voltage, I had to provide the required voltage, but now I’m getting error messages like "no cable connected" or "no signal." The USB ports, Ethernet port, and GPU fans are functioning normally, yet the system resets to default after a reboot. Why is the voltage so high?
Well, it was just a thought but it's good to be certain it's an AF model in any case.
And at any rate... do you notice the line marked 'CPU Core Voltage (SVI2 TFN)? The one displaying your core voltage as around 1.075 volts during the stress test? Under extreme heavy loads, which should fall within the 1.2-1.3 volt range, possibly nearer to 1.2 in P95 small FFTs? It's no surprise it crashed.
What does that voltage reading look like when idle? It’s likely to fluctuate, so pay attention to the peak column. You shouldn’t see it exceeding 1.38V at idle. If you think the VCore is above 1.41, it should be fine as long as...
Initially, it's important to recognize that what counts as a high voltage varies depending on the CPU, with some models tolerating lower voltages due to reduced leakage and others requiring more because of higher leakage.
Second, ensure you're measuring the same voltage consistently. Most motherboards provide Vcore readings, which represent the VRM output between the capacitor bank and the CPU base, along with SVI2, the actual core voltage inside the CPU. These values can change significantly under different loads. Additionally, 'VID' is often misunderstood as a voltage measurement but is actually used incorrectly by some users.
Lastly, your motherboard's VRM might not deliver power efficiently, necessitating a higher voltage to prevent instability caused by low-side drops.
First of all, my English isn't very strong. I'm going to answer you as I understand it, and if I make any mistakes, I'm sorry.
My mobile is a Gigabyte B450M S2H.
Of course, I know that "too high" depends on the specific CPU. Everyone uses around 1.4V, and they get speeds from 3.7 to 4.9 GHz. My mobile doesn't support going above 1.41V, but people say you can get up to 4.2 GHz at that voltage. I can't even reach 3.9 GHz with 1.4V.
🙁
From what I see, you might have made the wrong measurements. I watched videos explaining how to overclock and what settings work best for my CPU and mobile. Also, this is related. I agree my mobile isn't perfect for overclocking, but it shouldn't stop me from trying.
First step is to obtain HWInfo64, which is the monitoring tool for determining the SVI2 core voltage.
Next, something that significantly increases system demand is CPUz, offering both a BENCH and STRESS mode that can be used right away.
Just set the values to 1.41 or 1.425 V and 3.9Ghz overclocking you can achieve. Then run HWINfo and observe the SVI2 core voltage readings to see the actual voltage your processor receives while idle in Windows and under load during the CPUz stress test.
EDIT: I also noticed... are you certain you have an AF? Did you install it in a sealed case with a cooler? Have you inspected the heat spreader for any markings?
Additionally, it might be feasible to convert AE into AF using the appropriate etching laser. I haven’t heard much about this method or its potential value, just curious if it’s worth exploring. I’m mainly wondering if HWInfo could provide useful CPU information.
3,9 - 1.41V set. During CPUz stress test; https://imgur.com/y640aUP View: https://imgur.com/y640aUP I'm certain I have an AF. It appears on CPUz as "12nm" and "Pinnacle Ridge". HWInfo matches too. It was in a sealed box with the cooler. I couldn't get the rest. Edit: On prime95 small FFTs test, the PC crashed again at 1.41V 3,9GHz.
Well, it was just a thought but it's good to confirm it's an AF model in any case.
And at any rate... do you notice the line marked 'CPU Core Voltage (SVI2 TFN)? The one displaying your core voltage as around 1.075 volts during the stress test? Under extreme heavy loads, which should fall within the 1.2-1.3 volt range, possibly closer to 1.2 in P95 small FFTs? It's no surprise it crashed.
What is the expected reading for that voltage when the system is idle? It’s likely to fluctuate, so pay attention to the peak column. You shouldn’t see it exceeding 1.38V at idle.
If you need to increase the VCore above 1.41, it should be fine as long as the SVI2 TFN stays under 1.38V.
When it stabilizes around 1.38V during idle, if it doesn’t hold steady, reduce the clocks until it does.
And definitely, if temperatures rise significantly (up to 90+C), you’ll need to cut back the clocks until better cooling is achieved.
That’s the voltage information you should be checking now.
Hi, welcome! I'm just starting out here and also new to OC for Ryzen CPUs. I recently switched my platform from the old Intel i7 3770 to the Ryzen 5 1600 AF and wanted to explore some performance improvements. A few years ago I had done similar work on an LGA775 to C2D board and achieved good results with a 2500k processor, but I was mostly using an i7 3770 with only turbo OC enabled.
I came across a discussion where someone mentioned the SVI2 TFN in the HWinfo. In the past, I always relied on CPUz core voltage settings. But now I'm wondering if the correct voltage for Ryzen is different. After checking my BIOS, I found a lower voltage setting and noticed that CPUZ's Vcore seems too high.
During OCCT testing at 3800, the readings were:
- screen: ~1,287V
- cpuz: 1,363V
- occt: 1,37V
Which value should I use for Ryzen?