I'm also trying to upgrade this HP EliteDesk 800 G1 TWR to a gaming computer.

[NonSequitur777]

@AsianJuju,

Do you need assistance with swapping RAM and or the processor?

Kind Regards,

NonSequitur777

[AsianJuju]

I found a video thank you very much but was that all I needed?

[NonSequitur777]

@AsianJuju,

No, that is not all that is needed.  I need to know the wattage or part number of your power supply, and I still don't know if we are talking about an SFF (Small Form Factor) or a TWR (Tower) model.  Please clarify.

You'll need a graphics card to make the HP EliteDesk 800 G1 TWR/SFF playable for games.  Knowing what the wattage of your PC is as well if it is a TWR/SFF, will assist me to suggest a couple of options.  Also, could you please tell me what games your child wants to play?

In addition, it would be very helpful to know the part number/model of the primary (boot) drive currently installed.  You may have to upgrade that as well, depending on what you have.

Kind Regards,

NonSequitur777

[AsianJuju]

My apologies but can you tell me where I can locate this information so I can let my son know. Thanks a million and again I'm sorry for my ignorance.

[NonSequitur777]

@AsianJuju,

Assuming your son is already in possession of the PC, perhaps your good son or a trusted PC-savvy family acquaintance could answer my questions?

Kind Regards,

NonSequitur777

[AsianJuju]

Ok provided my login information so they can directly send that over. But it's definitely a TWR!

[NonSequitur777]

@AsianJuju,

OK, an HP EliteDesk 800 G1 TWR is powered by a 320-watt power supply.

Personally, I would recommend this particular RTX 3050 graphics card model, which has a low TDP (Total Design Power) of just 70-watt, and does not need a PCIe power cable: https://www.amazon.com/GIGABYTE-GeForce-Graphics-WINDFORCE-GV-N3050OC-6GL/dp/B0CVHD8PLP/ref=sr_1_3?c....

Kind Regards,

NonSequitur777