PSU/GPU upgrade

[RyanjIIS]

Hello all, looking to upgrade the GPU from the RX 550. I understand this will almost certainly require upgrading the PSU. 

Here are the specs- 

HP-Pavillion-tp01-0066

MOBO- HP 8643 (Erica?)
GPU- AMD Radeon RX 550 ( 50W?)
CPU-Ryzen 5 3600 6 core
RAM-2x8 GB
PSU-310W PSU, the L63964-004

My questions are as follows-
What PSU options do I have that will fit directly without modifications?
What GPU's will fit into the case and mesh with whatever PSU options I have?

For an estimate of what I'm looking for in the GPU, something comparable to the RX 580 or 590.

Huge thanks in advance

[NonSequitur777]

@RyanjIIS,

The fastest processor compatible with your Erica MOBO is either the AMD Ryzen 7 3700X (3.60 GHz Base up to 4.40 GHz max boost) OR, upon further inquiry aka digging a little bit, the non-HP-mentioned AMD Ryzen 5 3600 (3.60 GHz Base up to 4.20 GHz max boost). Reference: HP Desktop PCs - motherboard specifications, Erica | HP® Customer Support.

The fastest GPU for your rig -assuming keeping your existing 310 watt PSU, would be the low-profile/low-power GIGABYTE GeForce GTX 1650 OC 4GB in my opinion.  Disclaimer: as whenever you buy an upgraded GPU, you would still have to check that the GTX 1650's dimensions would fit in your chassis. Reference: Amazon.com: GIGABYTE GeForce GTX 1650 OC Low Profile 4G NVIDIA 4 GB GDDR5 Graphics Card : Electronic....

There is a 400 watt HP proprietary PSU which is compatible with your Erica MOBO: p/n L04618-800 which are going for a minimum of $130 ~ $140 on eBay: l04618-800: Search Result | eBay these days.  Reference: Power Supply Cross Reference for specific models - HP Support Community - 7483923.

Interestingly, as per UserBenchMark [dot] com, Users of your specific rig have been able to make an RTX 2060 work, see: UserBenchmark: HP Pavilion tp01-0066 Desktop Rfrbd PC Compatible Components.  Unfortunately, the aforementioned link doesn't reveal what PSU they are using, or even if they parked their RTX 2060 outside the chassis, powered by a secondary PSU.  Who knows.

Hope this helps.

Kind Regards,

NonSequitur777