PSU Upgrade Options for HP EliteDesk 800 G5 Base Model Tower PC Product No. 6BD61AV

[deskuser]

PSU Upgrade Options for
HP EliteDesk 800 G5 Base Model Tower PC
Product No. 6BD61AV

I have an HP EliteDesk 800 G5 Desktop PC (Product No: 6BD61AV)

I would like to add a Graphics card / Graphics Processing Unit (GPU)
For the upgrade I considered upgrading the Power Supply Unit (PSU)

The PC shipped with a 250W PSU,
while most graphics cards recommend at least 300W PSU,
some GPU models need either a 400W or a 500W power supply. 

In two different documents associated with this particular PC model, 
an option for a 500W PSU is mentioned: 

[1] 

HP EliteDesk 800 G5 Tower PC Data sheet

Page 2, HP EliteDesk 800 G5 Tower PC Specifications Table

"Power", "250 W internal power supply, up to 92% efficiency, active PFC;"
"500 W internal power supply, up to 90% efficiency, active PFC"

https://www8.hp.com/h20195/v2/GetPDF.aspx/4AA7-5400EEAP.pdf

https://duckduckgo.com/?q=HP+EliteDesk+800+G5+6BD61AV+datasheet+filetype%3Apdf&ia=web

Filename: 4AA7-5400EEAP.pdf

MD5: 09a61bb08c27088e00fe19beec15e359
SHA-1: 496dd9abd9622d2c15fc8e4954826cd9602ba831
SHA-256: 4d75976a00b705a87c2397f780406f93f4eec8d5bb7ccf15b906b7071d52aed2
SHA3-512: 9b4c4334816c72f47339e93cbf2effd74903c5566780f06407f30191ed568c36836c0d02002b9c8ad40afb40307d748734b22c9f04bb8768d950eceb1cd55f31

[2] 

Maintenance and Service Guide HP EliteDesk 800 G5 TWR Business PC
Page 5, Illustrated parts catalog, Computer major components, (2) "Power supply", "500 W"

http://h10032.www1.hp.com/ctg/Manual/c06440900.pdf

https://support.hp.com/us-en/product/hp-elitedesk-800-g5-tower-pc/27066682/model/27066685/manuals?sk...

Filename: c06440900.pdf
MD5: cdd96834eb4cc2442af67c72c7e0b48b
SHA-1: 44f34c334f8c3f4eb744a5471935cb81c3da2932
SHA-256: e2a1a17ecf95fc7ef5fcaf8e801716b7cce2da1bf8d4a0a9282fcfa5ba67cda9
SHA3-512: e122c04a589a0d3cbed26e05cbbe2c9ce065fe0faeda270c4b359b5e4ba44394c5fda073c67db042b186f27bbb966df11de2d3878f2f377735f1c1c5da97374e

These desktops use proprietary PSUs from HP (instead of a standard ATX power supply)

from [2]
"NOTE:
HP continually improves and changes product parts. For complete and current information on supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions."

https://partsurfer.hp.com/partsurfer?searchtext=6BD61AV

However, HP Partsurfer does not list any 500W PSU units in this case, 
even if I input the Serial no. instead of the Product no.

Is there a 500W PSU unit for the specific PC model (6BD61AV) available? 

If yes, then what is its Part Number and where to get one such PSU from?

I found the following on the HP Support Community Forum relating to this question: 

[3] (This is my primary experience as well)

"Really disappointed to find that my EliteDesk 800 G5 full size tower only comes with a 250W PSU. What's the point in selling a case with expansion potential when the PSU can't cope with a graphics card? [...]

I understand that HP sell a 500W PSU upgrade but I can't for the life of me find a part number or stockist."

EliteDesk 800 G5 i7 Full Tower PSU Upgrade Options

https://h30434.www3.hp.com/t5/Unanswered-Topics-Desktops/EliteDesk-800-G5-i7-Full-Tower-PSU-Upgrade-...

[4] (This is the closest hit and most useful post that I could find on the topic)

PSU Upgrade [Product: Hp Elitedesk 800 G5 Sff I7 9700]

https://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/PSU-Upgrade/m-p/8525373/highlig...

The above message also references this: 
HP EliteDesk 800 G5 SFF – Specification and Upgrade Options – Hardware Corner

https://www.hardware-corner.net/desktop-models/HP-EliteDesk-800-G5-SFF/

[5] (There are clever and advanced hacks
e.g. adding an 'external' PSU with a sync module as a workaround, 
like this one, for example: )

[5A] Upgrading PC PSU

https://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/Upgrading-PC-PSU/m-p/8619417/hi...

[5B] [How to] upgrade an HP EliteDesk 800 G3 SFF

HP ELITEDESK 800 G3 SFF UPDATE VIDEO CARD (GPU) AND POWER SUPPLY (PSU)

https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/HP-ELITEDESK-800-G...

[5C] Upgrading HP EliteDesk 800 G4 SFF

https://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/Upgrading-HP-EliteDesk-800-G4-S...

[These hacks involve a lot of parts that I would rather avoid them:

• a standard ATX power supply placed outside the PC case
  as an additional, 'secondary' or 'external' ("discrete") PSU
  
• an ATX 24-Pin Power Supply Adapter / ATX power adapter card 
  to connecting and sync / "daisy chain" the additional PSU
  with the 'main' / 'primary' one
• An A40cm PCIe x16 riser extension cable 
  to connect the GPU to the mainboard 
• 'base-board' for the graphics card
  that holds the GPU outside the PC case
• a graphics card backplate radiator
  PWM dual fan cooling heatsink kit
• etc

]

I would prefer to simply swap the current 250W HP PSU with a 500W HP PSU.

(If there is an option for that)

Another important resource often referenced on the forum: 
[6] Power Supply Cross Reference for specific models

https://h30434.www3.hp.com/t5/Desktop-Knowledge-Base/Power-Supply-Cross-Reference-for-specific-model...

(Unfortunately, I cannot find my specific PC model in this chart)

Most helpful HP Support Community Forum Members
who posted answers and information on the topic:

NonSequitur777

https://h30434.www3.hp.com/t5/user/viewprofilepage/user-id/4187452

Informative support answers and external secondary PSU hack projects

Wb2001

https://h30434.www3.hp.com/t5/user/viewprofilepage/user-id/203970

Power Supply Cross Reference for specific models

Information about NVidia GPUs

[7] NVidia Graphics Card Specification Chart - Studio 1 Productions and David Knarr

https://www.studio1productions.com/Articles/NVidia-GPU-Chart.htm

[8] NVIDIA GPUs – endoflife_date

https://endoflife.date/nvidia-gpu

[9] List of desktop Nvidia GPUS ordered by CUDA core count

https://duckduckgo.com/?q=List+of+desktop+Nvidia+GPUS+ordered+by+CUDA+core+count+standaloneSA+site%3...

https://github.com/AutoSDWorkflow/gpus-by-cuda-cores

[10] Nvidia Graphics Cards List In Order Of Performance

https://www.cgdirector.com/nvidia-graphics-cards-order-performance/

[11] List of Nvidia graphics processing units – Wikipedia

https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units

[12] GPU comparison tool to choose an optimal graphics card – Technical City

https://technical.city/en/video

[13] Nvidia CUDA Cores Explained: How are they different – Tech Centurion

https://www.techcenturion.com/nvidia-cuda-cores/

[14] NVIDIA GPU Architecture: from Pascal to Turing to Ampere – WOLF Advanced Technology

https://wolfadvancedtechnology.com/articles/nvidia-gpu-architecture

[15] NVIDIA’s Mainstream GeForce GPU Performance Per Dollar Visualized Over The Years [...]

https://wccftech.com/nvidia-geforce-gpu-generational-performance-per-dollar-gains-visualized/

[16] NVIDIA - ArchWiki

https://wiki.archlinux.org/title/NVIDIA

My goal is to speed up, accelerate specific mathematics calculations using parallel GPU computing in MATLAB.

[17] GPU Support by Release – MATLAB – MathWorks

https://www.mathworks.com/help/releases/R2021b/parallel-computing/gpu-support-by-release.html

[18] GPU acceleration options – gives an overview of NVIDIA cards that can be used for GPU processing

https://svi.nl/GPUCards

Any help would be much appreciated.
(Information, recommendations, ideas, ...)

Kind Regards, 
Deskuser

[NonSequitur777]

@deskuser,

Welcome to our HP User Forum!

You have come to the right place.

Forget about finding the elusive 500-watt proprietary power supply -which would still impose a rather modest wattage limit.

Instead, use a secondary synced ATX power supply like I did with my HP EliteDesk 800 G3/G4/G5 SFF upgrade projects.

How does it work: you keep the original OEM HP power supply (probably the 250-watt PSU) to continue powering your desktop (including the PCIe x16 graphics slot) and your PSU also syncs an externally parked ATX power supply through one of its 15-pin SATA power cable which you connect to an ATX PSU 24-Pin to SATA power supply adapter card, which looks like this:

This power adapter card provides a signal to power up a secondary ATX PSU (up to 1,000 watt) whenever you turn on your PC.

With this ATX power adapter card, you are adding a discrete ATX power supply to your PC.  Again, all you have to do is connect a standard ATX PSU's 24-pin power cable to the 24-pin slot on the adapter card and connect the adapter's 15-pin SATA connection to one of your proprietary's PSU 15-pin SATA power cable connectors. Done. Once connected, the secondary PSU is synced with your PC -meaning, that when you start up or power down your PC, the secondary power supply switches on and off at the same time, and powers a high-end graphics card seamlessly and perfectly synchronized.

Your HP EliteDesk 800 G5 Tower Business PC can easily be fitted with a high(er) end graphics card, to be powered by the secondary ATX power supply.  You route the various power cables through the back of your PC by removing one or more PCI brackets.

Summarizing:
1.) - Your existing PSU stays and powers everything except your GPU's PCIe 6/8-pin(s) power cable(s).
2.) - Connect one of your proprietary HP PSU 15-pin SATA connectors into the corresponding power adapter card plug.
3.) - Connect the Secondary PSU's 24-pin ATX power connector into the adapter card's 24-pin plug.
4.) - Connect your GPU (parked out/inside) with the secondary PSU's 6/8-pin(s) PCIe power connector cable(s).
5.) - Whenever you turn on your HP EliteDesk 800 G5 Tower Business PC (and thus power on your Primary PSU) this adapter will automatically turn on your secondary PSU, powering whatever is plugged into it. And when you power off your computer, it will automatically power off your secondary PSU.
6.) - It is SAFE: the ATX to SATA adapter card has power isolation technology built in to prevent any power issues.

Link: https://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/Upgrading-HP-EliteDesk-800-G5-S....

Hope this will be helpful.

Kind Regards,

NonSequitur777

[NonSequitur777]

@deskuser,

Btw, I found the part number of the 500-watt HP power supply for an HP EliteDesk 800 G5 Tower: 901759-013 "Power Supply - TWR, 500W ENT17, 90% EFF, 12V".

You can purchase one of these PSUs, for example, through eBay-Germany: https://www.ebay.de/sch/i.html?_from=R40&_nkw=HP+901759-013&_sacat=0&LH_PrefLoc=2&_sop=15, or Amazon-Germany: HP 901759-013 Original Desktop PC Power Supply 500 Watt for EliteDesk 800 G4 Tower PC: Amazon.de: Co.... 

Kind Regards,

NonSequitur777

[deskuser]

@NonSequitur777, 

Thank you for your informative and helpful answers and quick reply!

(I received these answers in a very short time, less than a day) 

The advantage of the approach outlined above (adding a 2nd PSU) 

to my understanding, is that it further extends the capabilities of the PC

in the sense that it widens the range (choice) of gpus

that can be installed and used in the given system, 

even beyond the limits of the original parts provided by the manufacturer.

The other option (replacing the 250W PSU with a 500W PSU from HP)

is just quick and easy, although it imposes its limitations (narrows

the range of GPUs that can be installed)

I would accept both as a fair solution. 

(Both having its advantages and disadvantages)

I am going to test one of the options

and then post another reply

based on fresh experience... 

Best Regards,

Deskuser

[NonSequitur777]

@deskuser,

Yes, you absolutely nailed it: both options have their pros and cons.

It looks like* the 500-watt power supply (p/n: 901759-013) comes with one 6-pin PCIe and one 6+2-pin PCIe power cables, identical to another (probably not compatible) 500-watt power supply with p/n: L05757-800.

Point is though, that a 500-watt power supply is not sufficient, say for an RTX 3070 and up, especially if a graphics card requires a 12-pin PCIe power cable.  Then again, if, say an ASUS Dual GeForce RTX 3060 Ti 8GB GDDR6 (which only requires one 8-pin PCIe power cable) is good enough for your gaming/rendering needs, then the 500-watt PSU would be A-OK.

* Online HP information challenging to find/verify.

Kind Regards,

NonSequitur777