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Max safe voltage for Ryzen CPU's?

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Erasmus_Tycho View Drop Down
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    Posted: 19 Jul 2018 at 1:58am
Well, I feel like I lost the silicon lottery.  I have been trying to get my 1800x to get through a sustained run of Prime95 at 4ghz, and still haven't been able to even at 1.425v.  For reference, I can run 3.9ghz at 1.35v (P-states with vcore offset at 0.00 - auto) with 8+ hours of Prime95.

Cooling isn't a problem here, at the highest temps in Prime95 at 1.425v, it tops out at 76c, but ONLY on the harshest calculations with cinebench runs topping out in high 60's.  

I'm cool with my daily setup running at 3.9ghz @ 1.35v (core performance boost enabled up to 4ghz) afterall, it is suuuch a small performance boost it only translates to a 20-30 point increase in cinebench. I'm just chasing benchmarks really at this point and it seems the highest scores require at least 4ghz with the highest scores up to 4.1.  

I guess the reason for this post is, I can't seem to find a straight answer on the subject of what voltages I should limit myself to, even on a temporary timeframe.  I've seen 1.35 all the way up to 1.5... 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gizmic Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jul 2018 at 10:52am
There is no straight answer 
if the voltage requirement to run 4.1ghz needs way more than 4.0ghz then the extra heat is not worth it.

better tune the system elsewhere to get a higher score.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Reinvented Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jul 2018 at 11:53am
Originally posted by Erasmus_Tycho Erasmus_Tycho wrote:

Well, I feel like I lost the silicon lottery.  I have been trying to get my 1800x to get through a sustained run of Prime95 at 4ghz, and still haven't been able to even at 1.425v.  For reference, I can run 3.9ghz at 1.35v (P-states with vcore offset at 0.00 - auto) with 8+ hours of Prime95.

Cooling isn't a problem here, at the highest temps in Prime95 at 1.425v, it tops out at 76c, but ONLY on the harshest calculations with cinebench runs topping out in high 60's.  

I'm cool with my daily setup running at 3.9ghz @ 1.35v (core performance boost enabled up to 4ghz) afterall, it is suuuch a small performance boost it only translates to a 20-30 point increase in cinebench. I'm just chasing benchmarks really at this point and it seems the highest scores require at least 4ghz with the highest scores up to 4.1.  

I guess the reason for this post is, I can't seem to find a straight answer on the subject of what voltages I should limit myself to, even on a temporary timeframe.  I've seen 1.35 all the way up to 1.5... 

That's what we call in overclocking a voltage wall.  If there's a significant jump in voltage required for a small MHz increase, then the chip is at it's limit.  And AMD has stated that with Ryzen 1st Generation, the max voltage that should be used is 1.425v, and no more than 1.2v SoC voltage. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Erasmus_Tycho Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jul 2018 at 4:08pm
Originally posted by Reinvented Reinvented wrote:

Originally posted by Erasmus_Tycho Erasmus_Tycho wrote:

Well, I feel like I lost the silicon lottery.  I have been trying to get my 1800x to get through a sustained run of Prime95 at 4ghz, and still haven't been able to even at 1.425v.  For reference, I can run 3.9ghz at 1.35v (P-states with vcore offset at 0.00 - auto) with 8+ hours of Prime95.

Cooling isn't a problem here, at the highest temps in Prime95 at 1.425v, it tops out at 76c, but ONLY on the harshest calculations with cinebench runs topping out in high 60's.  

I'm cool with my daily setup running at 3.9ghz @ 1.35v (core performance boost enabled up to 4ghz) afterall, it is suuuch a small performance boost it only translates to a 20-30 point increase in cinebench. I'm just chasing benchmarks really at this point and it seems the highest scores require at least 4ghz with the highest scores up to 4.1.  

I guess the reason for this post is, I can't seem to find a straight answer on the subject of what voltages I should limit myself to, even on a temporary timeframe.  I've seen 1.35 all the way up to 1.5... 

That's what we call in overclocking a voltage wall.  If there's a significant jump in voltage required for a small MHz increase, then the chip is at it's limit.  And AMD has stated that with Ryzen 1st Generation, the max voltage that should be used is 1.425v, and no more than 1.2v SoC voltage. 

Kinda what I thought unfortunately.  Going to skip the 2xxx series and wait for Ryzen 2. This 1800x is still a pretty solid chip.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cx5 Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jul 2018 at 8:30pm
@Erasmus

Look again, this gives me bravery to go higher everywhere else. https://www.tomshardware.com/reviews/overclocking-amd-ryzen,5011-2.html

Most shockingly 1.9V Ram for ambient cooling.

And 1.3v soc

I'm especially convinced after bios upgrade to 4.7 where soc only shows red warning at 1.55v

But disclaimer as usual, if it dies, burnt and explode I take no responsibility.

Good luck.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Erasmus_Tycho Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2018 at 1:22am
Originally posted by cx5 cx5 wrote:

@Erasmus

Look again, this gives me bravery to go higher everywhere else. https://www.tomshardware.com/reviews/overclocking-amd-ryzen,5011-2.html

Most shockingly 1.9V Ram for ambient cooling.

And 1.3v soc

I'm especially convinced after bios upgrade to 4.7 where soc only shows red warning at 1.55v

But disclaimer as usual, if it dies, burnt and explode I take no responsibility.

Good luck.

Have you had luck with a higher SoC voltage?  I haven't increased mine from 1.1v.
ASRock x370 Taichi V4.4| Ryzen 1800x | 16GB x 2 DDR4 3200 (14cas) | GTX 1080 Ti K|NGP|N | WD NVMe Black 512GB | 2 x 500GB Samsung EVO 960 | Corsair HX1000 | EK Custom Loop (360mm rad + 280mm rad)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Reinvented Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2018 at 4:59am
Originally posted by Erasmus_Tycho Erasmus_Tycho wrote:

Originally posted by cx5 cx5 wrote:

@Erasmus

Look again, this gives me bravery to go higher everywhere else. https://www.tomshardware.com/reviews/overclocking-amd-ryzen,5011-2.html

Most shockingly 1.9V Ram for ambient cooling.

And 1.3v soc

I'm especially convinced after bios upgrade to 4.7 where soc only shows red warning at 1.55v

But disclaimer as usual, if it dies, burnt and explode I take no responsibility.

Good luck.

Have you had luck with a higher SoC voltage?  I haven't increased mine from 1.1v.

That's generally bad advice.  SoC voltage is usually for higher memory clocks/IMC control.  If you are after 24/7 stability, find your maximum overclock, and back down slightly till it's stable without a voltage wall.  Those values that he gave you are very very wrong, and should not be used for 24/7 usage.  You are simply at the chips limit. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Erasmus_Tycho Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2018 at 6:04am
Originally posted by Reinvented Reinvented wrote:

Originally posted by Erasmus_Tycho Erasmus_Tycho wrote:

Originally posted by cx5 cx5 wrote:

@Erasmus

Look again, this gives me bravery to go higher everywhere else. https://www.tomshardware.com/reviews/overclocking-amd-ryzen,5011-2.html

Most shockingly 1.9V Ram for ambient cooling.

And 1.3v soc

I'm especially convinced after bios upgrade to 4.7 where soc only shows red warning at 1.55v

But disclaimer as usual, if it dies, burnt and explode I take no responsibility.

Good luck.

Have you had luck with a higher SoC voltage?  I haven't increased mine from 1.1v.

That's generally bad advice.  SoC voltage is usually for higher memory clocks/IMC control.  If you are after 24/7 stability, find your maximum overclock, and back down slightly till it's stable without a voltage wall.  Those values that he gave you are very very wrong, and should not be used for 24/7 usage.  You are simply at the chips limit. 

I wasn't planning on it, those numbers looked like they were for LN2 overclocking.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote noxinthebox Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2018 at 6:42am
I got my ryzen 7 1700 to 4.0 with a 1.44375v at max temp runs at 71c which is perfectly fine in my opinion. It's pretty stable but can't push any higher without getting into a boot loop.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gizmic Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2018 at 11:06am
my auto defaults are in that area except for the ram 
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