Ryzen 2700 overclocking temp issue

error8

Diamond Member
Nov 28, 2007
3,202
0
71
#1
Hello,

I have a problem and I don't really understand which is the cause of it. Maybe someone has had a similar issue!?

I have the following system:
MSI B450 Gaming Pro Carbon AC;
2x8 gb Kingston HyperX @3466 mhz;
Ryzen 2700 non X;
Thermalright Le Grand Macho.
Cougar Challenger case with two intake fans and two exhaust ( very well ventilated ) room temp is 24 C

So, as I've tried to overclock the CPU, I have very high temperatures once I go above 1.35 V. For instance, for 4 ghz on all cores I use 1.37 V and I have 92-95 C in Prime95 and Aida64. I've installed twice the cooler, first by using liquid metal and second by using the supplied thermalright paste of the cooler. No difference between temperatures in both cases.
As this cooler is rated for 300 W TDP, I don't seem to understand why I'm reaching such high temps bellow 1.4 V. Do these octo cores need only AIOs for OC?

Any ideas?
Thanks
 
Mar 10, 2004
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#2
It's probably not the issue, but there is a 8/15/2018 BIOS release.
 

error8

Diamond Member
Nov 28, 2007
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71
#3
Thanks for the info. I'll update as soon as I'll get home.
 

guskline

Diamond Member
Apr 17, 2006
5,254
13
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#4
error8: I'm running my 2700x at stock even under a custom waterblock with plenty of cooling capacity (2-360mm rads for cpu and gpu). The small gains I made OC were not worth the extra heat.
I think the 2700x at stock was pushed much closer to the upper limit.

You have the 2700 which is clocked lower. It is probably binned so pushing all 8 cores to 4Ghz is quite a chore. The 2700 is rated 3.2Ghz all cores and 4.1 boost on some cores while the 2700x is rated 3.7 Ghz all cores and 4.3 some cores.

Update your bios and try running at 3.9GHZ all cores and see the temp differential.
 

error8

Diamond Member
Nov 28, 2007
3,202
0
71
#5
To be honest after reading all the reviews and tests, I thought that 4.1-4.2 ghz is a breeze, even under air for 2700. But it does look like I've lost the silicon lottery with this one.
 

Markfw

CPU Moderator, VC&G Moderator, Elite Member
Super Moderator
May 16, 2002
17,087
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#6
Mine was 1.35 vcore stock, thats why mine was hot. I updated the bios, and then it was like 1,05 vcore, and it was stable at 3.9 ghz on the stock cooler.

Ryzen 2 hates vcore.
 

error8

Diamond Member
Nov 28, 2007
3,202
0
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#7
I'm at 3.9 ghz now with 1.25 V@77 C in Prime95 and it looks like I have a bit of room to drop it even further. I have to be happy with this,no!? :)
 

Markfw

CPU Moderator, VC&G Moderator, Elite Member
Super Moderator
May 16, 2002
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#8
I'm at 3.9 ghz now with 1.25 V@77 C in Prime95 and it looks like I have a bit of room to drop it even further. I have to be happy with this,no!? :)
I wouldn't be. OK, I am running 1.28 vcore (per cpuz) and 4.1 ghz and its 65c per Ryzen master. You should be able to get close to that. At 1.25 vcore what are your temps ? If they are below 65c, tyhen go up 50 mhz at a time until its stable and the temps are good.
 

error8

Diamond Member
Nov 28, 2007
3,202
0
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#9
I'm at 77 C at 1.25 V. No way I will ever be bellow 65 C, maybe only at stock. I've tried 3.95 ghz at 1.25 v and Prime95 froze instantly. As I've observed, probably 4.0 ghz is stable at 1.4 V and maybe 4.1 ghz is achievable beyond 1.45 V. But there is no chance I can cool it at those voltages with my current cooler. I'll settle for 3.9 ghz. It's all I can do...
 

Markfw

CPU Moderator, VC&G Moderator, Elite Member
Super Moderator
May 16, 2002
17,087
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#10
I'm at 77 C at 1.25 V. No way I will ever be bellow 65 C, maybe only at stock. I've tried 3.95 ghz at 1.25 v and Prime95 froze instantly. As I've observed, probably 4.0 ghz is stable at 1.4 V and maybe 4.1 ghz is achievable beyond 1.45 V. But there is no chance I can cool it at those voltages with my current cooler. I'll settle for 3.9 ghz. It's all I can do...
OK< then next, its about lowering the vcore to lower temps. Try 1.225, and check stability, Keep lowering just a little and keep checking stability.
 

error8

Diamond Member
Nov 28, 2007
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#11
Made a quick Prime95 test at 1.2 V and it was a no-go. So probably 1.25 V is as stable as it can be.
I've also put the ram to 3466 mhz@16-21-21-42 2T from 19-23-23-42 2T . Tested it at 3733 mhz and it booted fine, but crashed in AC Origins. Might be stable at more volts ( 1.45 V ) but I won't go there.

So the bottom line is: Ryzen 2700 doesn't like additional voltage, runs hot as hell and can't really be efficiently cooled on air. It's a hell of a CPU. But since it was a bargain, I have no complains. :)
 

Guru

Senior member
May 5, 2017
494
88
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#12
Try different thermalpaste, maybe the Thermal Grizzly Kryonaut, I've heard from most experts that its the best one or at least one of the top 3 of all thermalpastes. The cooler on that heatsink is also quite weak, don't know if you can replace it with a better cooler and more aggressive one.
 
Mar 24, 2017
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#13
To be honest after reading all the reviews and tests, I thought that 4.1-4.2 ghz is a breeze, even under air for 2700. But it does look like I've lost the silicon lottery with this one.
I have bought two 2700x chips and neither have come close to 4.3ghz all core. I assume the reviewers got golden samples similar what Intel has done in the past.
 

error8

Diamond Member
Nov 28, 2007
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#14
Try different thermalpaste, maybe the Thermal Grizzly Kryonaut, I've heard from most experts that its the best one or at least one of the top 3 of all thermalpastes. The cooler on that heatsink is also quite weak, don't know if you can replace it with a better cooler and more aggressive one.
Regarding thermal paste, since at first I've used Coollaboratory Liquid Pro and the temps were still very high, I don't think that Grizzly Kryonaut will make much of a difference, if any, from the provided Thermalright Chill Factor 3, which is quite good.
Anyways I've reseated the cooler once again last night and no change in temps whatsoever.
But I will probably replace the stock fan with a higher RPM 140mm to see if that can make a difference.

Or, does anyone have any idea if it will make a large difference to replace the Le Grand Macho with some 2X120/140mm rad AIO? I can't seem to find an answer anywhere regarding this. I'm still in my full refund time frame for the Macho if I send it back, although I scratched the hell out of the fins with the stupid metal clips that hold the fan.
 
Last edited:

guskline

Diamond Member
Apr 17, 2006
5,254
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#15
error8, the law of diminishing returns kicks in here to gain that last few ticks of cpu clock speed. I originally had a 1800x in my C6H mb when the Ryzen came out and swapped it out for a 2700x because gift cards made it about a zero cost upgrade.

I fool around with custom water cooling (very expensive hobby) so when I built the original Ryzen 1800x rig I had 2 RX 480s in CF along with the 1800x- all water cooled with EK custom water blocks. I use 2- 360mm Magiccool rads (they fit nice in my case) with plenty of rad fans and an EK D5 140 pump/reservoir combo.

I was able to push my 1800x to the limit at 4Ghz all cores but it really was on the edge, both temp and vcorewise.

I first sold off the 2 480s and went to a single GTX 1080 gpu with I custom water cooled EK block.

When the 2700x came out, I switched to it from the 1800x and noticed that though I could overclock it, the gap from stock to unstable was much less than the 1800x. Of course the 1800x had a much lower stock clock speed than the 2700x. In addition the 1800x stock would not OC as many cores as the 2700x stock does. In fact, my tests showed the 2700x stock was actually faster than the 1800x at 4Ghz on all cores.

In light of all of this, and despite a custom water cooling system with decent cooling capacity, I opted to keep the 2700x stock.

If I was you, I would wait until the 2700x goes on sale and swap it out for your 2700.

BTW, what gpu are you running?
 

error8

Diamond Member
Nov 28, 2007
3,202
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#16
I'm running a GTX 1080 overclocked with an Arctic Cooling Xtreme III strapped on it.

You're right, I should probably be happy with what I have now and wait for Zen 2 on 7 nm next year. Or who knows, maybe the 2700X will have a massive discount after Intel releases its 9900K. So much hassle for 200 mhz. :)
 
Apr 27, 2000
10,790
533
126
#17
Try different thermalpaste, maybe the Thermal Grizzly Kryonaut, I've heard from most experts that its the best one or at least one of the top 3 of all thermalpastes. The cooler on that heatsink is also quite weak, don't know if you can replace it with a better cooler and more aggressive one.
Kryonaut is the best non-metal paste out there. CLU should provide better temps.

If OP wants a better paste, he can try Conductonaut, though it isn't much better than CLU (if at all).

I have bought two 2700x chips and neither have come close to 4.3ghz all core. I assume the reviewers got golden samples similar what Intel has done in the past.
Interesting. I haven't seen a lot of data on the 2950X, but my hope that the chip would hit 4.4 GHz all cores regularly seems already to be dashed. 4.2 GHz under custom water seems to be a struggle. So I guess it makes sense that only a few 2700X chips could hit 4.3 GHz (or higher).
 

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