Generic CPU discussion

Tom M
Tom M
Joined: 2 Feb 06
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Tom M wrote:Keith Myers

Tom M wrote:

Keith Myers wrote:

General advice is fit the largest radiator your case will allow.  Plenty of 360mm AIO kits out there now.  Some even with full coverage Threadripper coldplates.

Just ordered a MasterLiquid ML360 Mirror ARGB for just under $100 from NewEgg

Installed.  OC at 4.225 Right now.  CPU temp is around 89 C. 1.42 volts/auto with high LLC settings.  Going to let this run a while longer.  Still trying to see how high the OC can go before I start lowering the cpu volts.

It previously has overheated with the best of the Air Cooled CPU coolers at this OC.

Tom M

 

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Tom M
Tom M
Joined: 2 Feb 06
Posts: 6438
Credit: 9566379789
RAC: 8800029

Tom M wrote: It previously

Tom M wrote:

It previously has overheated with the best of the Air Cooled CPU coolers at this OC.

It got as high as 93 C but was back down to 89 C before I bumped the OC 4.250 this time.

Tom M

 

 

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Tom M
Tom M
Joined: 2 Feb 06
Posts: 6438
Credit: 9566379789
RAC: 8800029

This system is stable but

This system is stable but running hot.  But at least I am still able to OC it to 4.224 GHz without it crashing.

The CPU voltage set in the bios is a fixed 1.40  As you can see it is "sagging" to 1.37

I have had limited success in dropping the fix voltage very much without it sagging to the point where the system reboots.

I see the following paths going forward.

  1. Stand pat.
  2. Try to drop the voltage a little to cool it down.
  3. Drop back to all "auto" and enable the PBO with the Cpu Boost.  The major advantage here is it runs cooler and I won't loose a lot of production.
  4. Switch to my Taichi X570 MB with more granular LLC controls and try again.

========

tlgalenson@Moonglow-CPU:~$ sensors
nouveau-pci-0a00
Adapter: PCI adapter
GPU core:    912.00 mV (min =  +0.80 V, max =  +1.19 V)
temp1:        +40.0°C  (high = +95.0°C, hyst =  +3.0°C)
                       (crit = +105.0°C, hyst =  +5.0°C)
                       (emerg = +135.0°C, hyst =  +5.0°C)

k10temp-pci-00c3
Adapter: PCI adapter
Tctl:         +87.2°C  
Tdie:         +87.2°C  
Tccd1:        +86.8°C  
Tccd2:        +84.8°C  

nvme-pci-0100
Adapter: PCI adapter
Composite:    +52.9°C  (low  = -273.1°C, high = +84.8°C)
                       (crit = +84.8°C)
Sensor 1:     +52.9°C  (low  = -273.1°C, high = +65261.8°C)
Sensor 2:     +60.9°C  (low  = -273.1°C, high = +65261.8°C)

asuswmisensors-isa-0000
Adapter: ISA adapter
CPU Core Voltage:          1.37 V  
VPP MEM Voltage:           2.52 V  
+12V Voltage:             10.14 V  
+5V Voltage:               5.01 V  
3VSB Voltage:              3.31 V  
VBAT Voltage:              3.18 V  
AVCC3 Voltage:             3.33 V  
SB 1.05V Voltage:          1.04 V  
CPU Core Voltage:          0.00 V  
CPU SOC Voltage:           0.00 V  
CPU Fan:                 1869 RPM
Chassis Fan 1:              0 RPM
Chassis Fan 2:              0 RPM
Chassis Fan 3:              0 RPM
AIO Pump:                   0 RPM
Water Pump:              2368 RPM
CPU OPT:                    0 RPM
CPU Temperature:          +87.0°C  
CPU Socket Temperature:   +37.0°C  
Motherboard Temperature:  +58.0°C  
Chipset Temperature:      +46.0°C  
Tsensor 1 Temperature:   +216.0°C  
CPU VRM Temperature:       +0.0°C  
CPU VRM Output Current:    0.00 A  

tlgalenson@Moonglow-CPU:~$

 

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Keith Myers
Keith Myers
Joined: 11 Feb 11
Posts: 4964
Credit: 18713127873
RAC: 6376560

The reason it runs cooler

The reason it runs cooler under Auto PBO is because it runs much, much lower voltages under all-core loads and a lot lower core clocks. Look at the running voltage under load with the sensors command for the CPU Core Voltage and you will see it running around 1.17-1.24V but only at ~4Ghz clocks.

I have no idea what tuning controls you have on that motherboard with respect to the LLC section.  I know you stated you only have 4 levels of Auto, Low, Medium and High.

But do you have any other controls like setting the current levels for the cpu and SoC?  I set mine to 120% current limits and also the vrm phase controls to either Extreme or Optimized.  I doubt your BIOS has those controls.

You will need to move to the x570 board to pick up those controls probably.

 

Tom M
Tom M
Joined: 2 Feb 06
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Credit: 9566379789
RAC: 8800029

Can anyone explain "what is

Can anyone explain "what is an amd epyc 7d12 cpu"?

Some information says its "locked" other listings claim will work on any MB.  I am assuming this is a gen 2 Epyc cpu.

And it has a really low cpu idle listed.  Depending on the vendor they are claiming upto 3Ghz for boost.

It is significantly cheaper on the eBay listings.  And I want to know what the gotcha is :)

Tom M

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Ian&Steve C.
Ian&Steve C.
Joined: 19 Jan 20
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it's a Dell OEM part. 32c64t.

it's a Dell OEM part. 32c64t. 85W

 

if it's "new" never been installed, it might work in any board.

if it's a used pull from a Dell system, itll be locked to Dell only.

_________________________________________________________________________

Tom M
Tom M
Joined: 2 Feb 06
Posts: 6438
Credit: 9566379789
RAC: 8800029

Ian&Steve C. wrote: it's a

Ian&Steve C. wrote:

it's a Dell OEM part. 32c64t. 85W

 

if it's "new" never been installed, it might work in any board.

if it's a used pull from a Dell system, itll be locked to Dell only.

If the naming conventions are being followed then this CPU would run on a dual-cpu Motherboard.

There are some listings for New cpu's on eBay.

It looks like this is a lower-powered/cheaper/slower version of the 120W CPU with the same core/thread count.

So would it be a good buy for a 2 two CPU system?

Hmmmm......

Tom M

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Ian&Steve C.
Ian&Steve C.
Joined: 19 Jan 20
Posts: 3945
Credit: 46732292642
RAC: 64191920

I imagine that at 85W, it

I imagine that at 85W, it will run very slow clock speed under full load. personally I wouldn't go for something this low clock speed.

if you decide to go for it, make sure you get one that explicitly states that its NOT Dell locked. the cheaper ones will undoubtedly be locked, the more expensive ones look to be the non-locked ones. but for the price they're asking, id probably go for something with less cores and higher clocks

_________________________________________________________________________

Tom M
Tom M
Joined: 2 Feb 06
Posts: 6438
Credit: 9566379789
RAC: 8800029

Ian&Steve C. wrote: I

Ian&Steve C. wrote:

I imagine that at 85W, it will run very slow clock speed under full load. personally I wouldn't go for something this low clock speed.

if you decide to go for it, make sure you get one that explicitly states that its NOT Dell locked. the cheaper ones will undoubtedly be locked, the more expensive ones look to be the non-locked ones. but for the price they're asking, id probably go for something with less cores and higher clocks

I would be seriously tempted to go for a (or a pair of) Epyc 7601 cpus (32c/64t) with higher clocks.  It just wouldn't have a good efficiency as the 2nd Gen cpus.

Tom M

 

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

Tom M
Tom M
Joined: 2 Feb 06
Posts: 6438
Credit: 9566379789
RAC: 8800029

Keith Myers wrote: The

Keith Myers wrote:

The reason it runs cooler under Auto PBO is because it runs much, much lower voltages under all-core loads and a lot lower core clocks. Look at the running voltage under load with the sensors command for the CPU Core Voltage and you will see it running around 1.17-1.24V but only at ~4Ghz clocks.

I have no idea what tuning controls you have on that motherboard with respect to the LLC section.  I know you stated you only have 4 levels of Auto, Low, Medium and High.

But do you have any other controls like setting the current levels for the cpu and SoC?  I set mine to 120% current limits and also the vrm phase controls to either Extreme or Optimized.  I doubt your BIOS has those controls.

You will need to move to the x570 board to pick up those controls probably.

I put my Taichi x570 up for bid on eBay and someone did finally bid on it.  I am pleased to be getting rid of that temptation to try to make it useful (again).

I just found a new Asus X570 MB for under $100 on eBay.  I am highly tempted because this MB only needs a primary gpu slot, an X570 chip set and the best Bios interface (with more granular control) that I have experimented with.

Tom M

 

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)  I want some more patience. RIGHT NOW!

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