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91
Hardware projects / Re: HP Z440 12 pin Memory conn...
Last post by Roy - February 13, 2018, 08:48:51 am
Thanks a lot,

I have tested the P1 , it is total different to z420... I could not find any 11 V and there is a special problem for the 5V - only one cable, the motherboard decided, "now I give 5V free for using".

The boot process stopped by switching on the cpufan, no voltage on USB for making bios update and no signal to the nvidia p1000 graphic card.

I will check the connection of 6.5.1 and try it again. I hope, the mainboard is not defect. I am angry because of chassi ID or other blocking ideas of HP engineers.

I am able to give you the pinout of P1 but some pins are going directly to sata...
92
Hardware projects / Re: HP Z440 12 pin Memory conn...
Last post by hen6e - February 12, 2018, 10:05:35 pm
Thank you Roy.
I think the 6-pin fan's pinout  is connecting 6.5.1 together as groung, other pins are like generic 4-pin fan.
Because of Chinese Spring Festival I can't test it in about 10 days.
We can communicate with each other with a instant messaging software.
As for power supply I want to use a server psu DPS-800GBA so I don't want to use that adapter although that seller is close to me.
Thank you for your pinout again.
Here is a photo of the orignal fan from Taobao.

93
Hardware projects / HP Z800 ATX Power good signal ...
Last post by Prettypicturegirl - February 11, 2018, 06:44:18 am
Hi Andy,

maybe you can point a "non techy" in the right direction? I'd really appreciate it.

I have an HP Z800 of which I want to upgrade the graphics card to one, or possibly later two, GTX 1080Ti or GTX1080.
The cards draw 250watt each and require two 8pin power connectors each. Clearly to much for the 850watt psu inside the machine.

I was thinking of upgrading to HP's internal 1250watt psu, but it has a number of drawbacks.
-very expensive 503€
-Not enough & not the right connectors
-Not a good reputation in terms of reliability
-More heat builtup inside the machine
+Lives inside the box

So I plan to add an external 600watt ATX power supply for the graphics cards. The rest (motherboard & Co) will continue to run over the internal HP psu.
Result:

+Enough reliable power (2x 300watt)
+Correct number and correct type of power connectors (4x 8Pin)
+65€ only
-External box (it "lives" under the table so i do not mind at all.).
-Needs ATX "power good signal to work"

Here is my question.
I need to branch off the "power good" signal to sent it to the ATX connector of the external psu.
All adapters I have seen so far only allow either an ATX Y or plug into the HP power supply connector which would than be occupied by it. Still, I need this plug to be fully functionally attached to the motherboard.

Can you tell me please, if I could connect the two "power good" pins of the ATX (14 green & 15 black) on the external PSU to two pins on the memory power supply cable of the Z800?
Which two pins on the HP cable should/could I use in this case?
I think the easiest would be to simply solder two cables to the HP cable and attach them to an ATX connector which plugs into the external psu.


Once this ATX connection is made I would connect the two cards to the external PSU and leave the external psu in standby.
When the Z800 gets switched on, the "power good" signal goes to the external psu, switches it on and supplies power to the two graphic cards.
Would that work?

Last question.
Do you think the 850Watt HP internal PSU would have enough power for a processor upgrade from dual X5650 to dual X5690 remaining if the graphics cards are  not attached to it?
I have the dual X5650 version right now. Do i need to upgrade cooling then?


Thanks so much,

prettypicturegirl
94
Hardware projects / Re: HP Z440 12 pin Memory conn...
Last post by Roy - February 10, 2018, 03:55:27 am
May be I found the answer for the cpu fan 6 pin connector?

Could be the same like z800, found in mobohack z800
95
Hardware projects / Re: HP Z440 12 pin Memory conn...
Last post by Roy - February 10, 2018, 03:25:42 am
I have attached pictures from the power supply.

P2 Connector

upper row
green green white white orange orange 
   1       2        3      4        5         6
down row 1-4 connected together in one point grnd connected together in second point (all black)


see attached pictures

green V12-CPU2
white V12-CPU0
orange V12-M

I have found only this adapter, but long time delivery

https://www.aliexpress.com/item/High-Quality-new-ATX-24Pin-to-18Pin-8pin-to-12pin-Adapter-Power-Supply-Cable-for-HP/32830069041.html


96
Hardware projects / Re: HP Z440 12 pin Memory conn...
Last post by Roy - February 10, 2018, 01:36:37 am
Excuse for late reply, I was on holiday trip.

Thank you for the pinout you are right, I have checked it with the cables of the original power supply. For the 18 pin connector I cannot find out the pinout on this way, but I think it is the same like for older version z620 z820. It is possible to by adapter for low price (company adaptere).

The next problem is the cpu fan, 6 pin ! My fan has only 4 pin.



97
Hardware projects / Re: HP Z440 12 pin Memory conn...
Last post by hen6e - January 30, 2018, 11:23:17 pm
here is the attachment
98
Hardware projects / Re: HP Z440 12 pin Memory conn...
Last post by hen6e - January 30, 2018, 11:20:46 pm
I just bought this board a few days ago.By measuring the impedance of pins from the connector , I guess the pinout is as shown in the attachment.But I cannot confirm that.So, your measurement will be the final result.
Finally, Can you share the pinout of  24pin-to-18pin adaptor?
99
Hardware projects / Re: HP Z440 12 pin Memory conn...
Last post by Roy - January 30, 2018, 02:32:21 pm
see attachments
100
Hardware projects / Re: HP Z440 12 pin Memory conn...
Last post by Roy - January 30, 2018, 02:00:24 pm
I have bought a power supply for z440 and I will make a measure.

some pictures in attechement

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