Hp tower z2 i9 14900 overheat problem

[Tomchoww]

I need help on overheating Workstation.

The comnputer is barely under 10% cpu usage and it runs at high tempeture of 74celcius

with a slight demand it hits 100Celcius easily.

is this a case of HP insufficient cooling for this high performance CPU.

[BeemerBiker]

Some temp tests on i9-14900 at TechPowerUp

Throttling starts at 95c but you can limit the power using INTEL XTU to, say 125 watts, or what you are comfortable with.

I use %99 for CPU Performance myself:  It keeps the CPU out of turbo speed which make a huge difference and no need to download 3rd party software.

Enter the phrase 'edit power plan' in the window search box
Then select the 'Advanced' tab

To keep the CPU from overheating , consider
using %99 instead of %100.

[Tomchoww]

as you can see the cpu usage is barely at 20% in totality and watt usage is already 82Watt

simple math means that 50% I will laready exceed 125watts.

at this rate I can only use 30-36% cpu usage before hitting some sort of limit or burn the cpu on a constant usage

this unacceptable for a workstation

is this a poor HP design for this CPU?

[BeemerBiker]

 According to Intel Employee quote

'your processor supports up to 100°C and any temperatures below it are normal and expected. '

Try to keep it under 100c. I recommend the %99 setting to disable turbo.

If it still overheats (100+) with turbo disabled return it for warranty work or add (or fix) the water cooling problem.

[Tomchoww]

thanks for advice.

I cannot add an unrealiable water cooling solution for a workstation.

[SDH]

Tomchoww, (Edited with better link added)

This is a thing I'd try if I was you. There is an excellent high cooling capacity heatsink/fan that HP developed for the Z440 workstations that I've experimented with. You can find those on eBay for as low as 15.00 USD here in the US including shipping (look for 749554-001). Those have twice the cooling fin surface area of many mainstream HP processor heatsinks, and 4 large instead of 3 smaller heat tubes. I've used those on our single processor souped up Z420/Z620 workstations, in our Z440 and single processor Z640 builds, and now also in my personal Z4 G4 workstation instead of using the smaller stock Z4 G4 heatsink that looks very similar. Recently I also found that HP is using those Z440 ones in an official kit for the greater than140W max TDP newer processors in the Z4 G4 workstations... that kit is for the newer Z4 G4 processors that run hot, up to 168W currently.

This has been posted about in the forum here, LINK. The reason this works despite those multiple workstations using different processor families (with different motherboard pad pinouts for the different processors) is that the stainless-steel socket over the different processors appears to be identical. That might also work for you, providing significantly higher cooling capacity than what you currently have.

I'd spend the 15.00 to get one and see if it will fit. By the way, there are two heatsink versions with the same part number... one has 2 mounting screws on the rear, and one has 1 screw front and 1 back. I like the second type because it seems to attach the big cooler box/fan to the base plate in a stronger way. We've posted on the fan plug pinout for these and use of the provided 6-hole fan plug on 5 pin motherboard headers, and more regarding a copy of the HP plug adapter if needed.

A bit more in this link too: Solved: Z2 G5 heatsink fan 4 pin to 5 pin - HP Support Community - 8317706

[Tomchoww]

found this item on Ebay.

HP Z440 / Z640 LGA 2011 Heatsink and Fan 749554-001 

but it looks like it comes with a 6 pin plug and also its for intel LGA 2011.. those this matter?

Thanks

[SDH]

It will be your job to buy one and see if it will fit. That is what I've done for my projects in the past. Then I report back here yes or no so others can benefit.

A forum friend here, NonSequitur777, has posted some on these issues too. I've spent years figuring out HP heatsink/fan engineering. They generally use PWM fans specially selected for long life and apply a motherboard PWM strategy to use a higher amperage rated fan and then slow it down via PWM so there is a range of RPMs available to the motherboard and to you via BIOS. HP has called these Mainstream, Performance, and Premium rated heatsink/fan combinations. The wiring of the fan plug is related to those ratings. Standard PWM wire order (which is what HP uses) is pin 1-4 ground/ 12VDC/ RPM sense back into the motherboard from the fan rotor/ PWM control from motherboard out to the rotor controller in the fan. They use a 5th or even a 6th pin in addition to those 4 for the Performance and Premium ratings.

The fans always blow towards their rotor label and usually have a specific HP part number on that label. The same fan may have a tiny subscript on the label for exact ID related to lead wire length and plug end type. The label virtually always is facing up against the cooling fins, so you have to take the fan off to see its part number. There are different amperage fans for different cooling performance. Slow quiet PWM fans like from Noctua will run too slow when the HP PWM control is applied to them (unless you compensate for that in your BIOS settings for fan speed). I just stick with the ones HP chose instead now.

For most workstations there is a 5 pin header on the motherboard and a 5 hole fan plug. For "Mainstream" coolers HP has usually left the 5th hole empty. For "Performance" coolers HP generally runs a ground jumper from hole 1 to hole 5. This way the motherboard sees ground on its pin 5 trace and knows a Performance heatsink/fan is attached. For a "Premium" heatsink/fan HP has been instead running a RPM sense jumper from hole 3 to hole 5. If the motherboard sees RPM sense signals on its pin 5 trace (instead of ground) it then knows it has the highest rated cooling heatsink/fan combo over the processor. In BIOS or firmware HP has ways to identify very hot processors and the motherboard may then demand a Premium rated wiring. Once you know the wiring tricks you can spoof the motherboard's demands, but I don't recommend that at all. Your particular workstation may not need the "Premium" type of wiring, however, because it is already set up to run the "Performance" wiring way (with ground jumper from 1 to 5). The HP Premium kit I've mentioned includes a little wiring adapter to get RPM sense pin 3 signals over to pin 5 correct, and modDIY copied that and has that available but I don't think you'd need it. I've used those and they are excellent quality.

You'll need to do some work here, and then share your knowledge. As I already said in my post above for hole 6 of your Z440 heatsink fan plug you just use holes 1-5 on your motherboard's 5-pin header and hang hole 6 out in space by 1/8"... it fits fine that way. The 6-hole white fan plug wiring has one ground jumper from hole 1 to 5 and then a second ground jumper from hole 5 to hole 6. You could cut off that last jumper if you wish... it does nothing on a 5-pin header. I used to swap on a 5-hole HP white plug until I realized that the 6th hole could just hang out in space there.

The big question is whether that Z440 high cooling capacity heatsink/fan will fit in height and width in your case, and if the attachment screws line up with the threaded holes in your stainless-steel processor cover. You can use a cut piece of paper between the top of the processor and the bottom of the heatsink plate to make sure you have good contact before you screw down the heatsink (with no thermal paste yet present). I did that once for NS777 to prove there was no empty gap that resulted and could hold my spare motherboard up by that paper strip.

You may not have the experience or desire to do this project. If that is the case hopefully others here can benefit from these details.

Below are 2 pics of your current 125W rated heatsink/fan. Note it only has 3 smaller heat tubes while the Z440 heatsink has 4 big ones. HP has the Z440 one rated for at least 198W cooling capacity for use in the kit they have for the Z4 G4 newest hottest processors. Hopefully it fits for you...

HP part number N10072-001

From old eBay ad cached in Google