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Cap_peeps

Finally DONE - CPU upgrade, Noctua FAN

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Cap_peeps

Hellooooo everybody.

 

As time has finally come and all required parts has arrived, I am presenting you my long struggling upgrade of the CPU + Noctua cooler.

All is reversible with no permanent destruction. (At least, I hope :)). And CPU fan is working according main case FAN.

 

Upgrade is about to have a new CPU: Xeon E3-1270 V2 with noctua fan: NH-L9i, installed together and cpu fan would work according main case fan.

(so if case fan spinning fast, cpu fan too. And vice versa).

 

1, CASE:

-------------

At first, the case needed to be modified little bit. I didnt want to drill out the original passive cooler mounting holders so I did a small workaround.

I filed a holes for the screw headers on the outside frame (1) and also a longer hole in the ("I dont know reason why is there" ) "mountain" below CPU (2).

 

pic 1:

https://ibb.co/FBxC04k

 

pic 2:

https://ibb.co/bJdb0gG

 

2, SCREWS:

------------------

As there was a hole in the screw holder on the motherboard plate, I had to find out the size of the screws, thread, diameter and so on.

But in another topic on this forum I was asking for the help with that, and somebody replied that I can use application and screw compared with different sizes.

So I did that and found out that the right size of screw is: #6-32.  So I had to ordered them (toghether with screw nuts) from China because I couldnt find them in our country stores.

 

3, BRACKETS:

----------------------

It is known, that Noctua original brackets were longer in size, 75 vs 65 mm. So I had a luck and asked our local CNC machining store if they could make a new brackets for reasonable price.

So here we are: 65 mm brackets for Noctua fan.

 

pic 3:

https://ibb.co/DVBM8Qt

(The new ones are not labeled)

 

4, COMPLETING:

---------------------------

After months of waiting, I've got all necessary parts and installed them together:

 

https://ibb.co/0D2rN5g - screws in the motherboard plate.

https://ibb.co/w74Z27B - Noctua fan cooler mounted with screws and nuts.

https://ibb.co/RBNMfRX - with fan.

https://ibb.co/nC94fs1 - reason for the hole.

 

5, FAN - Most tricky part

-------------------------------------

This was interesting part as we all know that the signal in the case fan is inverted and it is hard to workaround it. But after some hours of googling I found the solution.

There is IC chip existing which can invert the signal in the opposite way. The chip is: 74HC04 and you should be able to get it easily.

 

So with this scheme I found, it was really simple to create a new CPU fan cable: 

https://electronics.stackexchange.com/questions/322390/12v-pwm-fan-seems-to-be-running-inversely-of-what-it-should-be

 

Here is mine: (I also used the mentioned guide with power sourcing from separate molex, another topic on this forum)

 

https://ibb.co/YfKZWh8 - on the left - it is first attempt. I didnt like it much so I created a new one on the right. Much better result.

https://ibb.co/CQ5Kw0z - completed setup. I changed the case fan connector to usual one. The cable with chip inside was put into shrinking tube. 

 

So with all this, I installed everything together and now the new CPU fan works the exactly same way as the main case fan.

 

The next steps I would like to finish are: (probably more software-ish).

 

As I still have the original BIOS, firmware and all this, I would like to update them.

So maybe the question will be put here: what do you recommend to update first ? Or is there any guide how to update all possible things on this server ? in the correct way ? is it deppend on the right order ?

Also I realized that I am still using the system SSD disk on the first slot in the bay, so is there any way how to use SSD disk independently and the whole 4 bay slots for the storage disks ?

Another thing is that when I run some "stress" test on the server, all 8 cores at 100%, they went to 80 degrees and increasing, but when I checked the iLO, I saw the the fan was spinning only on 18%.

After some time on 21%, what I guess is not much. So I need to check the cooling options which are in BIOS, I guess. Also I am not sure if this is because the old BIOS ? Shouldnt be fan spinning more if the CPU has big load ? 

 

I think that's all my thoughts, ideas and I hope that maybe it helps somebody.

 

Many thanks again for all your hints and help.

 

Have a great days. cheers

 

 

 

 

 

 

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Claudio

Hello, congratulations for the work and commitment, which I imagine it takes to complete such a project.

 

As for what to update first (BIOS or iLO4) I would update the iLO4 first as the old firmware has serious known problems, then I would update the BIOS with the latest version you can find for free on the HPE website.

For the fan speed this depends on many sensors that are on the server motherboard and you can see them from the iLO4. The CPU-specific sensor that is inside the Intel CPU is not what the system reads, instead the system reads a sensor that is placed near the CPU soket.
The BIOS has other fan settings which are fixed but cause increased noise

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kiler129
On 9/9/2020 at 3:16 AM, Cap_peeps said:

3, BRACKETS:

----------------------

It is known, that Noctua original brackets were longer in size, 75 vs 65 mm. So I had a luck and asked our local CNC machining store if they could make a new brackets for reasonable price.

So here we are: 65 mm brackets for Noctua fan.

 

pic 3:

https://ibb.co/DVBM8Qt

(The new ones are not labeled)

 

wohoo! Definitely congratulations on the mod!


Can you maybe reveal how much did it cost you for these brackets? Some people use two screws but it’s... well, horrible.

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