[SOLVED] Query: Max voltage for stock Ryzen 2700

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eszed556

eszed556

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Hello. Recently installed a Ryzen 2700 on an X470 board.

I'm curious about safe voltage to the cores and have linked a screenshot ( https://ibb.co/ejuLwK ). Please let me know if these max voltages are within acceptable limits as I gather 1.45V is considered safe.
I do see some spikes which are <1% over 1.45V.

Supporting information:

- CPU has stock Wraith cooler.
- BIOS is up to date.
- Everything is stock, I do not intend to overclock.
- My casing (HAF 912) is air cooled with 3 x 120MM intakes and 3 x 120MM exhausts.
- Using an EVGA 1000W SuperNOVA P2

I suppose these voltage spikes are normal when the CPU boosts in demanding tasks?

Thanks


 
Solution
Roland Of Gilead
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Roland Of Gilead

Roland Of Gilead

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Yes, you're right. The voltage on auto settings will fluctuate like that. It's totally normal and occurs under load.

You can use CPUID to get the VID for your chip which is the max voltage to sustain rated clockspeeds for your chip.

Edit: although you are not OC'ing, you an get the Vcore down a bit. By taking the vcore of auto, you could start about 0.05 down from your VID. So lets you VID is 1.375v for the chip. Use the offset feature to reduce the Vcore to 1.325 or something. Run prime 95 small fft's, and if it passes with no errors, then your good to go. Your chip will use the set value you've entered (1.325 or whatever) rather than fluctuating wildly on auto.
 
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eszed556

eszed556

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keith12, thanks for your input.

CPUID HWMonitor is now reporting 1.469V across all 8 cores and core clock speeds in excess of 5,500MHz for a few cores. This leads to me believe that CPUID HWMonitor isn't really optimized to report Ryzen zen+ readings.

HWiNFO64 is somewhat in line with CPU specs although reporting some cores in excess of 1.45V. Core clock speeds do not exceed 4.1GHz as indicated in CPU specs.

Comparison of the 2 uploaded here https://ibb.co/esx7Tz

Seems erratic. Could this still be a voltage issue or unreliable reporting tools?

 
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eszed556

eszed556

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I assume this is a BIOS config?

Setting 'auto' to say 1.375V would mean that the upper limit for the CPU is now 1.375V as a threshold? Will that prevent the CPU from hitting 4.1GHz (upper limit as per spec sheet)?

Or does it mean the CPU will constantly be working at 1.375V?
 
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Roland Of Gilead

Roland Of Gilead

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The difference in reporting will be normal, as long as they are roughly the same. Which they are for the most part. I'm sorry, I must be missing something, but you said HWMon was reporting clockspeed of 5.5ghz on some cores, but I don't see that in the shot.

 
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Roland Of Gilead

Roland Of Gilead

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Yes, it's a bios config.Yes, it manually sets the vcore at 1.375. No, it won't stop the CPU hitting 4.1 as such, but could do. On auto the vcore will fluctuate wildly depending on load. Be setting it manually you are setting a threshold as such, but there will still be some fluctuation. If you run coretemp, you can see the VID for your chip. So this is a good starting point for setting the vcore at. If you find the chip can complete all it's test like stability testing etc at the manually set voltage, then that good.

But either way, on auto those voltages you are hitting (1.45) are absolute normal. It only happens for a split second and does not affect the life of the chip or do any harm at all. So nothing to worry about.

 
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eszed556

eszed556

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Here is a screenshot between the inconsistent max core speed readings between the 2 programs. https://ibb.co/bKUnBK
If I'm reading this right, one core hit 6.5Ghz which is clearly inaccurate.

I would rather not manually do anything at this point because I do agree with you that these auto voltage spikes are normal and within range.

The spikes are for a few seconds at most. I believe the board I have is solid (ASRock Taichi X470) and with the temps being reported I should not worry about it.

Below is a link to the AMD forum where an AMD Technical Support Engineer (username amdmatt) sheds lights on these voltage spikes and their impact on the chip. It seems this is by design.
https://community.amd.com/thread/228343
 
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Roland Of Gilead

Roland Of Gilead

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You most likely don't have the most up to date drivers for the system, or the most recent version of HWMon. It's a software glitch. I've seen it often.

Yes, like i said, these spikes are normal. Nothing to worry about. The point I was making about setting the vcore manually, is purely for an exercise. The benefits being lower CPU temps, and a consistent vcore. But makes no difference if you do or don't.

Good luck with the system. The X470 Tacichi is a highly rated board. Along with the 2700 you have a great system going. Have fun :)
 
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eszed556

eszed556

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Its certainly something I'd like to try in the future.
Thanks for your help.
 
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Roland Of Gilead

Roland Of Gilead

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No probs. You're very welcome. Have a good evening :)
 
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