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Very unstable Threadripper 2990WX OC

 
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post #1 of 8 (permalink) Old 04-09-2019, 03:07 AM - Thread Starter
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Very unstable Threadripper 2990WX OC

Hi all,
We have recently bought a AMD Threadripper rig for our parallel algorithm workloads, to test scaling and such. My goal is getting maximum multi-core performance possible, but I am having hard time overclocking this CPU. Here is my setup :

CPU : AMD Ryzen Threadripper 2990WX
MB: ASUS PRIME X399-A
RAM: HyperX Predator 64GB (Kit 4x16GB) 3000MHz DDR4, CL15 XMP
GPU: MSI GeForce GTX 710 1GD3H LP
SSD: 2x Samsung SSD 970 PRO 512GB Nvme M.2 (AMD RAID 0)
PSU: ZALMAN 850W eff. 88% 80Plus Bronze, ZM850-GVM
CASE: Fractal Design Define R5
CPU AIO: ENERMAX ELC-LTTR240-TBP

Fan configuration:
3x 140mm Filtered intake (2x Front, 1x Bottom)
2x 120mm AIO Push Top Outake
4x 60mm Top outake(VRM, RAM, CPU socket airflow)

MEM OC Settings:

D.O.C.P. Standard
XMP CL15 profile
DDR4-3133 MHz

I have studied several OC guides and reviews like Der8auer or Gamers Nexus and expected to reach manual OC settings around 3.8-3.9 GHz. Unfortunately my PC freezes when I try to apply fixed core multiplier and I am unable to find root cause. At first it seems stable, Cinebench blasts, our ninja builds are stressing 100% cpu for several minutes, but when you start our parallel algorithm PC lasts for about 30 seconds, based on how high the clock is. My CPU temp was around 75C. At first I was suspecting VRM since it had poor airflow then, after I added 4x 60 mm fans to get all hot air out of the board the result was the same. So I started to push VCORE voltage, still no difference. When I started to lower frequency down to 3.6 GHz with VCORE to 1.100V I saw it freezing when CPU and VRM temp was 60C.

When I installed PRIME95 and run "Small FTTs" test PC crashes in 2-3 seconds when on 3.8 GHz and VCORE 1.175V.

My current "safe" settings are:
LLC Level 2
Performance enhancer Level 2
CPU VCORE Offset -0.025V

With this CPU setting I can do any load I want, but during our algorithm load cpu runs max at 3.3-3.4 GHz.

I would be grateful if someone could help me diagnosing what is wrong with my setup or tell me that my expectations are too high from the CPU. I am happy to provide any output or info you may need, just ask
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post #2 of 8 (permalink) Old 04-10-2019, 01:26 PM
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I would be willing to suggest the points of failure are:
1) AIO (I have Enermax 360 liqtech ii with thermal grizzly kryonaut + noctua a12x25) [email protected] idle:34C prime95: 63C
2) MOBO, VRM might not supply sufficient or reliable current (for my 1950x on ZE I had this exact point issue freezing got the new mobo ZEA with 16 phases and so far all good [RMA my OG 1950x just in case it was faulty])
3) PSU might not be enough for GPU + THREADRIPPER; other post I asked and the minimum I was told was 1000+ PSU (I went with EVGA [custom cables otherwise I would have gone with seasonic or be quiet dark power 11] 1200+ P2 PSU)

I just got my rig running so still working on OC, so far I got GPU to clock high and currently working on Ram OC b4 I hit CPU OC (test if ram is faulty tho it runs all benchmarks fine at JDEC 2133 but want the 3200 as advertised).

If you want send me the programs and steps you want me to test so I can give you a point of reference from my system.

Buildripper
(17 items)
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Threadripper 1950x
Motherboard
Asus Zenith Extreme Alpha
GPU
EVGA 1080 Ti FTW3
RAM
G.skill
Hard Drive
Samsung 970 Pro
Hard Drive
Adata SX8200 Pro
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EVGA 1200W P2
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Enermax Liqtech 360 TR4
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Lian Li PC-O11 Dynamic
Operating System
Arch Linux
Monitor
Alienware AW3418DW
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Asus 24' TN
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Corsair K95 Platinum Gunmetal
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post #3 of 8 (permalink) Old 04-10-2019, 01:51 PM
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ASUS PRIME X399-A is a reason, you just need to change it on any top mobo
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post #4 of 8 (permalink) Old 04-10-2019, 01:54 PM
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The PSU used in the system is pretty mediocre so that might be why
The amount of wattage is not the problem you dont need a 1000 watt PSU for a Threadripper system with a GTX 710 the quality of the PSU is problem

Seravee
(32 items)
CPU
Intel Core I7 6850K
Motherboard
Gigabyte X99 Ultra Gaming
GPU
EVGA GTX 1080 FTW2
RAM
Kingston HyperX DDR4 Savage 3000 MHz
Hard Drive
Samsung 840 Evo 500 GB
Hard Drive
Samsung 860 Evo 1 TB
Hard Drive
Seagate Ironwolf Pro 8 TB
Hard Drive
Seagate Ironwolf 12 TB
Hard Drive
Seagate Ironwolf Pro 10 TB
Hard Drive
Seagate Ironwolf Pro 12 TB
Hard Drive
WD Ultrastar DC HC530 14 TB
Optical Drive
LG CH12NS30
Power Supply
EVGA SuperNova G2 750 watt
Cooling
x5 Noctua NF-A14 FLX
Cooling
Noctua NH-D15S
Case
Phanteks Enthoo Luxe Tempered Glass
Operating System
Windows 7 Ultimate 64 bit
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Windows 10 Home 64 bit
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Asus PG279Q
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LG 55C8 OLED TV
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Corsair Gaming Strafe RGB
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Last edited by shilka; 04-10-2019 at 02:06 PM.
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post #5 of 8 (permalink) Old 04-15-2019, 12:20 AM - Thread Starter
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Thank you all for you replies. I have been suspecting a PSU, so I played with LLC and the problem does not seem to be affected by voltage.. when running on Performance enhancer 2, system is stable but the voltage seems to be too high IMHO and I am not getting the expected results..

I there is notning else to try, other then buying new mobo and psu, then it does not worth the invesment now to

Maybe new PSU, I could put old one into other PC, but mobo is unusable for ther rig.. which PSU would you recommend?
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post #6 of 8 (permalink) Old 04-15-2019, 12:24 AM
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Depends on where you are from where you want to order from and how much you can spend

Seravee
(32 items)
CPU
Intel Core I7 6850K
Motherboard
Gigabyte X99 Ultra Gaming
GPU
EVGA GTX 1080 FTW2
RAM
Kingston HyperX DDR4 Savage 3000 MHz
Hard Drive
Samsung 840 Evo 500 GB
Hard Drive
Samsung 860 Evo 1 TB
Hard Drive
Seagate Ironwolf Pro 8 TB
Hard Drive
Seagate Ironwolf 12 TB
Hard Drive
Seagate Ironwolf Pro 10 TB
Hard Drive
Seagate Ironwolf Pro 12 TB
Hard Drive
WD Ultrastar DC HC530 14 TB
Optical Drive
LG CH12NS30
Power Supply
EVGA SuperNova G2 750 watt
Cooling
x5 Noctua NF-A14 FLX
Cooling
Noctua NH-D15S
Case
Phanteks Enthoo Luxe Tempered Glass
Operating System
Windows 7 Ultimate 64 bit
Operating System
Windows 10 Home 64 bit
Monitor
Asus PG279Q
Monitor
LG 55C8 OLED TV
Keyboard
Corsair Gaming Strafe RGB
Mouse
Roccat Kone EMP
Mouse
Roccat Sense Metor
Audio
Sennheiser HD 598
Audio
Onkyo TX NR646
Audio
Dali Opticon Vokal
Audio
x2 Dali Opticon 2
Audio
x2 Dali Opticon 1
Audio
Dali E12 F Subwoofer
Audio
Sennheiser HD-599
Other
CableMod E series PSU cable set
Other
CableMod LED Strips
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post #7 of 8 (permalink) Old 04-20-2019, 04:48 PM
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Quote: Originally Posted by dit3 View Post
Thank you all for you replies. I have been suspecting a PSU, so I played with LLC and the problem does not seem to be affected by voltage.. when running on Performance enhancer 2, system is stable but the voltage seems to be too high IMHO and I am not getting the expected results..

I there is notning else to try, other then buying new mobo and psu, then it does not worth the invesment now to

Maybe new PSU, I could put old one into other PC, but mobo is unusable for ther rig.. which PSU would you recommend?
The early Asus Motherboards based on the X399 were indeed not up to power VRM wise. There have been several sites conduct testing and the way Asus implemented their power draw and such proved to cause issues, especially with heat. Many sites were unable to get a stable OC on those boards. However, they have corrected this and their latest X399 top end board can perform well, Asus ROG Zenith Extreme Alpha. Make sure to note the "Alpha", as there was an earlier version without that word nearly identical.

I would also suggest the MSI Meg Creation as they are indeed geared for better VRM in how they implement it with enough power draw and layout.

Next up is the PSU and personally when I build a custom high end water cooled system I stay with Corsair, Seasonic and eVGA brands at their Platinum or Titanium levels. In fact, Seasonic has worked with Corsair for their designs and basically you are just buying straight from the design team at Seasonic vs Corsair aftermarket. If you want custom cables, all three have them in most common colors. For Seasonic, look at CableMod web site and you will find a list of PSU for what you need to buy.

Hope that helps some.
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post #8 of 8 (permalink) Old 04-21-2019, 04:38 AM
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Quote: Originally Posted by HiTekJeff View Post
The early Asus Motherboards based on the X399 were indeed not up to power VRM wise. There have been several sites conduct testing and the way Asus implemented their power draw and such proved to cause issues, especially with heat. Many sites were unable to get a stable OC on those boards. However, they have corrected this and their latest X399 top end board can perform well, Asus ROG Zenith Extreme Alpha. Make sure to note the "Alpha", as there was an earlier version without that word nearly identical.

I would also suggest the MSI Meg Creation as they are indeed geared for better VRM in how they implement it with enough power draw and layout.

Next up is the PSU and personally when I build a custom high end water cooled system I stay with Corsair, Seasonic and eVGA brands at their Platinum or Titanium levels. In fact, Seasonic has worked with Corsair for their designs and basically you are just buying straight from the design team at Seasonic vs Corsair aftermarket. If you want custom cables, all three have them in most common colors. For Seasonic, look at CableMod web site and you will find a list of PSU for what you need to buy.

Hope that helps some.
Only the newest AXi are Seasonic made everything else is made by other OEM´s such as CWT
You have to go all the way back to the first AX to find another Seasonic rebrand

Seravee
(32 items)
CPU
Intel Core I7 6850K
Motherboard
Gigabyte X99 Ultra Gaming
GPU
EVGA GTX 1080 FTW2
RAM
Kingston HyperX DDR4 Savage 3000 MHz
Hard Drive
Samsung 840 Evo 500 GB
Hard Drive
Samsung 860 Evo 1 TB
Hard Drive
Seagate Ironwolf Pro 8 TB
Hard Drive
Seagate Ironwolf 12 TB
Hard Drive
Seagate Ironwolf Pro 10 TB
Hard Drive
Seagate Ironwolf Pro 12 TB
Hard Drive
WD Ultrastar DC HC530 14 TB
Optical Drive
LG CH12NS30
Power Supply
EVGA SuperNova G2 750 watt
Cooling
x5 Noctua NF-A14 FLX
Cooling
Noctua NH-D15S
Case
Phanteks Enthoo Luxe Tempered Glass
Operating System
Windows 7 Ultimate 64 bit
Operating System
Windows 10 Home 64 bit
Monitor
Asus PG279Q
Monitor
LG 55C8 OLED TV
Keyboard
Corsair Gaming Strafe RGB
Mouse
Roccat Kone EMP
Mouse
Roccat Sense Metor
Audio
Sennheiser HD 598
Audio
Onkyo TX NR646
Audio
Dali Opticon Vokal
Audio
x2 Dali Opticon 2
Audio
x2 Dali Opticon 1
Audio
Dali E12 F Subwoofer
Audio
Sennheiser HD-599
Other
CableMod E series PSU cable set
Other
CableMod LED Strips
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