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HP Recommended

Don't know how to append a note if a thread is marked solved. This one (https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/Z2-G5-heatsink-fan...) was not really solved. Instead some know-it-alls from people who better stick to the beer. Well, I want to give back some experience to the community: 

If using a i9 10900K in a HP Z2 G5 TWR, the 5-pin CPU fan connector needs the speed signal on 2 pins (pin 3 and pin 5, instead of only pin 3). That is, you need to bridge pin 3 and pin 5, if using a non-HP standard pwm fan.

Be aware that the fan adapter needs to be connected via #6-32 screws directly to the housing under the mainboard. Many commercial pwm fans come with metric screws and mounting plates, which practically can not be used here. And the fan can be max. 92mm. Larger fans/cooler don't fit into the housing.

And of course: using original HP parts is always the preferable way, for everything else there is no warranty and everything you do is on your own risk. 🙂 Unfortunately the original HP fan was not available at the time when I needed it. That's why I used a non-HP fan. 

 

1 ACCEPTED SOLUTION

Accepted Solutions
HP Recommended

I stand corrected... I'm one of the know-it-all beer drinkers 03HT refers to.  My wife thinks so too.

 

It is good to finally have this corrected because some of us will be wanting to soup up the Z2 G5 "Tower" workstations with one of the most powerful CPUs HP certified for it, which requires that highest cooling capacity CPU heatsink/fan combo.  I've tried to figure these things out for that purpose.

 

The reason HP seems to have added to its usual wiring schemes for the different cooler's fan plugs in this case is because there are 3 separate official heatsink/fan combos for the Z2 G5 Tower form factor... rated for 65W, 80W, and 125W, respectively.  You can see those 3 listed in the HP Partsurfer PDF for the Z2 G5 TWR attached at the bottom of this post, all 3 highlighted together in yellow. The little camera icons there to see the 65W and 125W versions are active links.

 

M10275-001 = 65W "mainstream" cooler (flat round type of heatsink with top-mounted fan)
https://partsurfer.hp.com/ShowPhoto.aspx?partnumber=M10275-001

 

M10276-001 = 80W "performance" cooler (flat round type of heatsink with top-mounted fan having a ground jumper from pin 1 to pin 5)

 

M10277-001 = 125W super performance cooler (taller rectangular type of heatsink with 3 cooling tubes and side-mounted fan)
https://partsurfer.hp.com/ShowPhoto.aspx?partnumber=M10277-001

 

The 65W one uses the standard 4-wire approach of a HP "mainstream" fan plug, with socket 5 on the plug empty.  The 80W one uses the standard 5-wire approach of a HP "performance" fan plug with socket 5 now occupied by a little ground jumper wire carrying ground contact from pin 1 to 5.  The 125W one uses a new super-performance approach with socket 3 (RPM rotor sense signal, the PWM fan wiring standard) which gets its RPM signal via the long black wire that comes first to socket 5 and then is jumpered over to socket 3.  It this way both pin 3 and pin 5 on the motherboard's CPU fan header are seeing the fan's rotor RPM signal.  Pin 1 is ground, pin 2 is +12VDC, and pin 4 is for PMW control feedback from the motherboard out to the fan's rotor control circuitry.

 

The key to figuring out the images is to always rotate the plug end pictures so that the little side orientation tabs on the plug are directed down, the wires directed up, and the orientation tabs also are facing you. I failed to do this orientation the first time around. See the 3 pics below for examples. When you do that the plug sockets/wires will be 1-5, left to right.  The reverse face of the plug is just flat, and you can partially see the metal fan wire inserts from that side.

 

Here are the 3 versions of these heatsink/fan combos for the Z2 G5 tower, and note that I found a pic for the 80W version in the HP breakdown document for this workstation via the link HERE.  Subsequently I found some added pics of that heatsink/fan/plug proving it is the 80W rated version.  Note that the HP Partsurfer PDF attached below only lists the "Spares" P/Ns while the part itself will often only have the "Assembly" P/N on its label (or embossed into its plastic/metal).  That can make things confusing.  Here's access to the latest QuickSpecs for that workstation, from January 2022, which shows a good number of processors that would need the 125W cooling capacity heatsink/fan:

https://www8.hp.com/h20195/v2/GetPDF.aspx/c06912216.pdf

 

Thanks again to 03HT... I tried to edit my info on the prior mistaken post but it is locked down for me too.

 

65W Mainstream65W Mainstream80W Performance80W Performance125W SuperPerformance125W SuperPerformance

 

See attached PDF...

 

View solution in original post

1 REPLY 1
HP Recommended

I stand corrected... I'm one of the know-it-all beer drinkers 03HT refers to.  My wife thinks so too.

 

It is good to finally have this corrected because some of us will be wanting to soup up the Z2 G5 "Tower" workstations with one of the most powerful CPUs HP certified for it, which requires that highest cooling capacity CPU heatsink/fan combo.  I've tried to figure these things out for that purpose.

 

The reason HP seems to have added to its usual wiring schemes for the different cooler's fan plugs in this case is because there are 3 separate official heatsink/fan combos for the Z2 G5 Tower form factor... rated for 65W, 80W, and 125W, respectively.  You can see those 3 listed in the HP Partsurfer PDF for the Z2 G5 TWR attached at the bottom of this post, all 3 highlighted together in yellow. The little camera icons there to see the 65W and 125W versions are active links.

 

M10275-001 = 65W "mainstream" cooler (flat round type of heatsink with top-mounted fan)
https://partsurfer.hp.com/ShowPhoto.aspx?partnumber=M10275-001

 

M10276-001 = 80W "performance" cooler (flat round type of heatsink with top-mounted fan having a ground jumper from pin 1 to pin 5)

 

M10277-001 = 125W super performance cooler (taller rectangular type of heatsink with 3 cooling tubes and side-mounted fan)
https://partsurfer.hp.com/ShowPhoto.aspx?partnumber=M10277-001

 

The 65W one uses the standard 4-wire approach of a HP "mainstream" fan plug, with socket 5 on the plug empty.  The 80W one uses the standard 5-wire approach of a HP "performance" fan plug with socket 5 now occupied by a little ground jumper wire carrying ground contact from pin 1 to 5.  The 125W one uses a new super-performance approach with socket 3 (RPM rotor sense signal, the PWM fan wiring standard) which gets its RPM signal via the long black wire that comes first to socket 5 and then is jumpered over to socket 3.  It this way both pin 3 and pin 5 on the motherboard's CPU fan header are seeing the fan's rotor RPM signal.  Pin 1 is ground, pin 2 is +12VDC, and pin 4 is for PMW control feedback from the motherboard out to the fan's rotor control circuitry.

 

The key to figuring out the images is to always rotate the plug end pictures so that the little side orientation tabs on the plug are directed down, the wires directed up, and the orientation tabs also are facing you. I failed to do this orientation the first time around. See the 3 pics below for examples. When you do that the plug sockets/wires will be 1-5, left to right.  The reverse face of the plug is just flat, and you can partially see the metal fan wire inserts from that side.

 

Here are the 3 versions of these heatsink/fan combos for the Z2 G5 tower, and note that I found a pic for the 80W version in the HP breakdown document for this workstation via the link HERE.  Subsequently I found some added pics of that heatsink/fan/plug proving it is the 80W rated version.  Note that the HP Partsurfer PDF attached below only lists the "Spares" P/Ns while the part itself will often only have the "Assembly" P/N on its label (or embossed into its plastic/metal).  That can make things confusing.  Here's access to the latest QuickSpecs for that workstation, from January 2022, which shows a good number of processors that would need the 125W cooling capacity heatsink/fan:

https://www8.hp.com/h20195/v2/GetPDF.aspx/c06912216.pdf

 

Thanks again to 03HT... I tried to edit my info on the prior mistaken post but it is locked down for me too.

 

65W Mainstream65W Mainstream80W Performance80W Performance125W SuperPerformance125W SuperPerformance

 

See attached PDF...

 

† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the <a href="https://www8.hp.com/us/en/terms-of-use.html" class="udrlinesmall">Terms of Use</a> and <a href="/t5/custom/page/page-id/hp.rulespage" class="udrlinesmall"> Rules of Participation</a>.