why hp uses wierd proprietary connections for its pc without offering a upgrade?

[Sarathi123]

Why in the world they dont offer an upgrade( a paid one) when we want to upgrade the psu from 320 watt to a 450 watt with dedicated psu connector? or why in the first place remove the dedicated pcie 6 pin connector from a 320 watt psu?  the cpu uses 65 watt(its a i7 4770)  and the other components might add upto 55 watts. that places it at around 120 watts! .  for a fact i know that hp's z420 lineup features this exact same 12 volt psu with 400 watts with a dedicated pcie connector! . i can understand the reason they use a 12 volt standard as it saves a lot of power when computer is idle or doing light work . and business need to save much power as they can! but removing the pcie connector doesnt give a excuse! if i wanted to add a quadro card . i cant due to the crappy move they made on hp pcie power connectors! attleast offer an upgrade path to that 400 watt psu with dedicated connector! 

[DGroves]

first of all HP (and other OEM retailers "DO" offer systems that use the ATX standard for their parts but thes systems cost more than the HP designed systems

the question is why you choose to acquire a  non ATX system if you are unhappy with it you can simply replace it with a  system that uses the atx standard parts by buying a "boutique"  high end system or buying the parts at retail prices from places like amazon/new egg

OEM's use non ATX designs because when they design a system they have FULL CONTROL over all parts in the system and this allows them to make systems that have power supplies that fit non std cases, and/or design power supplies that are more efficient and cheaper

last, your G1 system can use a aftermarket power supply adapter that allows the usage of a ATX supply so you post in this case is moot.

https://www.amazon.com/COMeap-Power-Adapter-Workstation-12-inch/dp/B06XW7RWNH?source=ps-sl-shoppinga...

[Sarathi123]

replace this pc? Bruh. you expect me to throw this pc away and buy a new pc just because hp made a move that makes every part in this pc a E waste? and why should i be dependent on aftermarket solution for a problem that hp created and they has the solutions to it. all they has to do is to offer an z420's 400 watt psu for sale!

[NonSequitur777]

@Sarathi123,

I wholeheartedly second @DGroves's observations.  Either you accept the fact that aftermarket non-OEM HP parts are required to upgrade your desktop, or please move on and let HP do what it does.

NonSequitur777