Overclocking the Ryzen 5 1500X causes voltage issues for lower power states.
Overclocking the Ryzen 5 1500X causes voltage issues for lower power states.
So I really appreciate the extra performance boost from overclocking, but I've noticed that when I increase the voltages on Pstate 2 and 3 during OC, the power limits stop working properly.
Normal voltages without PBO and OC
- 1550MHz: 0.88v = 20W
- 3000MHz: 0.98v = 31W
- 3500MHz: 1.15v = 46W
Voltages when OC is applied
- 1550MHz: 1.35v = 32W
- 3000MHz: 1.35v = 47W
- 3900MHz: 1.35v = 67W
I've experimented with applying OC from Pstates, leaving Pstate 2 and 3 in auto mode, and also tried custom mode, but the voltages stay constant at 1.35 without dropping. I want to keep my PC running smoothly at 3000MHz with 0.98v for browsing, and only increase it to 3900MHz at 1.35v for gaming because the power draw from 31W to 67W is more than double, making the performance gain less than worth it—especially if I'm just browsing or doing light multitasking.
I believe that's another issue you're facing. Standard motherboards are quite difficult to overclock on, especially when you're looking for advanced features. Also, regarding those high power outputs—tests indicate that lowering the clock speed has minimal impact on consumption, possibly only around 5W or 10W at most. This level of power is mainly seen in laptops and tablets; desktops include it because adding it doesn't significantly affect performance.
In general, the amount of current drawn by the CPU—measured in amperage—is what accounts for about 95% of its power usage. I've confirmed this myself when running pure manual voltage settings without any downclocking or undervolting. The results in terms of wattage and temperature are nearly identical compared to when Pstates are enabled.
Hey there,
I'm curious about why you're using pstate for OC. Are you aiming to boost clock speed? Wouldn't it be simpler just to directly change the OC settings and tweak the CPU voltage and multiplier instead? You mentioned you could easily get a 3.9ghz with around 1.3v without complicating other aspects. Also, could you share your full PC specifications?
As discussed in the thread, the goal is to maintain low power consumption at a lower frequency of 3ghz @0.98v while achieving high performance for gaming at 3.9ghz @1.35v. This is why I opted for custom Pstates OC, since simply adjusting the multiplier and voltage results in consistent 3.9ghz output even with cool'n quiet enabled. However, using custom Pstates still keeps the frequencies stable despite attempts to lower them.
Not all chips behave the same; my model crashes at 3.9ghz @1.34v due to the lack of an LLC option on my motherboard and voltage drops affecting chip stability.
Components used:
- Asrock HVD B450m R4.0
- Ryzen 5 1500x
- 16gb DDR4 @2400mhz
- Cooler Master 550w
- Zotac GTX 1050ti
I believe that's another issue you're facing too. Standard motherboards are quite difficult to overclock on, especially when you're looking for advanced features. Also, regarding those high power outputs—tests indicate that lowering the clock speed has minimal impact on consumption, usually around 5W or less. This is mainly seen in laptops and tablets; desktops include it because adding more power doesn't significantly affect performance.
In essence, the amount of current drawn by the CPU (amperage) accounts for about 95% of its power usage. I've confirmed this by running pure manual voltage tests without any downclocking or undervolting. The results in terms of wattage and temperature are nearly identical compared to when Pstates is enabled.
From hwmonitor, even though it isn't the most accurate method, it shows the shifts in voltages related to wattage, giving me a rough sense of the power usage reported by my motherboard or CPU. I believe it's better not to overclock; I'll keep it stock and avoid pushing it above 400mhz.
I understand, just run stock. Particularly on a budget board. The VRMs seem a bit unreliable.