Hp prodesk 600 g3 mt psu upgrade

[Samedd23]

hey i bought a hp prodesk 600 g3 mt from ebay to make a gaming pc but it only has a 250w psu which will not work with a gtx 1660 ti i considered about changing the psu with my old atx one but it doesnt have the compatible cables cuz i found a 7 pin i think i dont know i have never seen that one and my atx psu only has 2 4 pin connectors i dont think it will be enough

[BeemerBiker · Accepted solution]

Possibly this will work as I see 600 g3 listed

https://www.ebay.com/itm/195871755950?_skw=hp+prodesk+600+g3+power+supply

look at the picture to check the connectors.

[Samedd23]

Its kinda expensive but will it be able to handle 24gb ddr4,2tb hdd,128gb ssd,gtx 1660ti?

[BeemerBiker]

The 1660Ti consumes 120 watts max and 300 watt power supply is recommended according to TPU

I spent some time looking for HP part number for alternative power supplies.   I did not find anything listed at the HP parts finder

https://partsurfer.hp.com/

The vendor lists a lot of HP systems and the 600 G3 is one of them but I was unable to find proof that it fits.

Our upgrade expert @NonSequitur777 found that a 250 watt was best fit here and recommended the RTX-3050 due to it lower power consumption.  I am only guessing the 400 will fit due to the vendor listing it.

I have GTX-1660Ti in an HP Z400 system and it is big and does put out a lot of heat. 

[Samedd23]

I found a 400watt psu on aliexpress that is compatible with the prodesk and ordered it should be here at 22 december- 1 january

[NonSequitur777]

@BeemerBiker,

An HP ProDesk 600 G3 MT was one of my upgrade projects, and the OP can use a 400-watt power supply with p/n: 942332-001.  This power supply can power up to a smaller-sized (dual fan) RTX 4060.

Kind Regards,

NonSequitur777

[miniture768]

It sounds like you're running into a bit of a compatibility issue with the PSU and the cables needed for your GTX 1660 Ti. The HP ProDesk 600 G3 MT typically uses a 250W PSU, which is indeed underpowered for gaming, especially with a GPU like the GTX 1660 Ti. You’re right to consider upgrading the PSU, but the cable and connector situation can be tricky.

Here’s a breakdown of what you can do:

1. Upgrade the PSU:
   You’ll need to get a more powerful PSU (at least 500W) that is capable of supporting your GPU. A standard ATX PSU should work, but you'll need to ensure it's the correct size for your case (the HP ProDesk 600 G3 MT uses a smaller form factor PSU).

2. Connector Compatibility:
   The "7-pin" connector you mentioned is likely a proprietary connector used by HP’s original PSU. Most modern ATX PSUs won’t come with these connectors.

   • Solution: You can buy an adapter that converts the proprietary HP 7-pin connector to a standard 24-pin ATX connector