Question Replacement for Gamdias Kratos P1-750 80+ Gold PSU ?

[JP705]

First, thanks in advance for the help. My young nephew’s gaming PC won’t power up, and we decided it’s the PSU. I have enough knowledge to physically replace it, but not much more. The PC was purchased, built by a third party. Any recommendations on budget friendly replacement would be much appreciated. Thanks!

Specs:
AMD Ryzen 7 3800XT 3.9GHz Octa-Core
ASRock B550 Phantom Gamimg 4 ATX
(2) 16GB DDR4-3200 Corsair Vengance LPX
NVIDIA GeForce RTX 3070 8gb GDDR6
500GB M.2 PCle 3.0 NVMe SSD Major Brand
CLX Quench 120 Closed Liquid Cooler
2TB 3.5in Seagate Barracuda HDD
SET P400A Mid Tower White
(3) CLX RGB Fan
PSU: 750w Gamdias Kratos P1 80+ Gold
Windows 10 Home

 

[Aeacus]

budget friendly replacement

Take your pick: https://hwbusters.com/best_picks/best-atxv3-pcie5-ready-psus-picks-hardware-busters/3/

Since PSU powers everything, it is the most important component inside the PC.
Hence why NEVER cheap out on PSU! Also, never buy used PSU either.

If you want good and cheap PSU, you have to buy two PSUs: the cheap one and the good one.

You already bought the cheap one, that Gamidas PSU. So, if you again want cheap PSU, get the Gamidas again (how long the build lasts - no-one can tell. Maybe days, maybe months. The uncertainty with cheap PSU still remains, whereby question isn't IF the PSU goes belly up, but WHEN PSU goes belly up.).

But if you're now serious about getting a good PSU, rather than the cheap one, pick any from the article i linked. Those there are all good/great PSUs, lasting easy 7-10 years (most likely even longer than that).


Oh, do note that even when you get a new PSU, build may still not power on due to other components the Gamidas PSU killed. And that's the magical power of PSUs - they are capable of killing everything they are connected to (aka whole PC). And the lower the PSU's build quality is - the higher the chance of it happening when PSU goes belly up.

 

[dark_globe]

First, thanks in advance for the help. My young nephew’s gaming PC won’t power up, and we decided it’s the PSU. I have enough knowledge to physically replace it, but not much more. The PC was purchased, built by a third party. Any recommendations on budget friendly replacement would be much appreciated. Thanks!

Specs:
AMD Ryzen 7 3800XT 3.9GHz Octa-Core
ASRock B550 Phantom Gamimg 4 ATX
(2) 16GB DDR4-3200 Corsair Vengance LPX
NVIDIA GeForce RTX 3070 8gb GDDR6
500GB M.2 PCle 3.0 NVMe SSD Major Brand
CLX Quench 120 Closed Liquid Cooler
2TB 3.5in Seagate Barracuda HDD
SET P400A Mid Tower White
(3) CLX RGB Fan
750 Watt Gamdias Kratos P1 80+ Gold
Windows 10 Home

it largely depends on your location
and which psus are available to you in your region and also at what price .
can you elaborate ?

 

[JP705]

it largely depends on your location
and which psus are available to you in your region and also at what price .
can you elaborate ?

I’m in Virginia, US.

Looking at the Corsair 750x. One more question. For his lighting effects to work, do we need a psu with RGB?

 

[dark_globe]

PCPartPicker Part List

Power Supply: NZXT C850 (2024) 850 W 80+ Gold Certified Fully Modular ATX Power Supply ($129.99 @ Best Buy)
Total: $129.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2025-05-18 14:45 EDT-0400

corsair RM850X (2024)
or XPG core reactor II 850w
are also very good units if you can get them at reasonable price

 

[USAFRet]

And....

Whatever PSU you get, you MUST remove all the modular cables from the old one, and use only the cables that come with the new one.

This is not optional.

 

[Aeacus]

Looking at the Corsair 750x.

Corsair RMx is solid PSU to use. 👍 Good quality unit with 10 year warranty and fully-modular cables. Also, the best price-to-performance ratio Corsair PSU you can get.

For his lighting effects to work, do we need a psu with RGB?

No.

PSUs with RGB, for the most part, are crap PSUs. Since their selling point is the flashy RGB, rather than the actual build quality of the PSU.

To get the lighting effects work (i assume RGB fans?), it comes down to MoBo. Though, it depends mostly on the fans on question. Cheaper RGB fans have their own controller unit (usually with a remote) and do not connect to MoBo 4-pin +12V RGB or 3-pin +5V ARGB header.

So, what fans you are exactly talking about (make and model or part number)?

Gave a quick look and your MoBo does have the two different RGB headers, two each.
MoBo specs: https://pg.asrock.com/mb/AMD/B550 Phantom Gaming 4/index.asp#Specification

- 2 x RGB LED Headers*
- 2 x Addressable LED Headers**

*Support in total up to 12V/3A, 36W LED Strip
**Support in total up to 5V/3A, 15W LED Strip

Also, once you have fans connected to the (A)RGB header, you also need dedicated software to control them. For your MoBo, default program would be: ASRock Polychrome RGB ver:2.0.190.
Download link: https://pg.asrock.com/mb/AMD/B550 Phantom Gaming 4/index.asp#Download
2nd last one in there.