Question Is my 430W PSU enough for this upgrade?

Jan 21, 2020
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Hey guys,

I am planning to upgrade several parts of my PC and I am not sure if I have to get a new PSU or the current one will handle the new stuff as well.
My current PSU model: HKC SZU-430 LPDR


The future upgrades:
So I will change my motherboard, since I am getting an Intel i5-2400 CPU instead of my AMD Athlon II X4 631.
I am also getting 2x4GB Corsair CMX4GX3M1A1600C9 RAM instead of my current 2x2GB (unknown).
I am also planning a new 1TB 7200RPM HDD to change the now used 500GB 5400RMP HDD.
And I will also get some new fans on my case, now the only fans are the CPU cooler (basic AMD, and i will buy basic Intel) and the GPU's fan. I will buy 3pcs of these Xilence COO-XPF80.R for the case.
And the most important part, the GPU itself. Now I have an AMD Radeon HD 7750 GPU, and I am planning to buy a 2GB model of the RX series, probably RX 550 or RX 560. As I checked the AMD's site it said 450W PSU for this RX model. Is that 20W difference that big, or my 430W should be enough?

I also did a calculation with the two setups:
Current: https://outervision.com/b/mi2tcA
Planned: https://outervision.com/b/XtIXGN

So guys what do you recommend? Can I keep my current PSU or should I upgrade to a bigger one?

Thank you for your help in advance!
Have a great day!
 

R_1

Illustrious
Herald
12V x 15A =180W
you need a new PSU.
that one is woefully underpowered for anything but USB devices, look at all the 5V power it can provide, unfortunately the GPU and CPU rely on the 12V rail.
 
Jan 21, 2020
7
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10
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12V x 15A =180W
you need a new PSU.
that one is woefully underpowered for anything but USB devices, look at all the 5V power it can provide, unfortunately the GPU and CPU rely on the 12V rail.
Ohh, I see!
Could you help me what should I look for on the label to get the best replacement?
 
Last edited:

R_1

Illustrious
Herald
so you know V x A = W a handy formula
you want a 500W psu to have almost all that wattage on the 12V rail. my 600W unit has 50A on the 12V for 600W that are actually usable. having all the power on 3.3 or 5 is a dead giveaway of an inferior unit.
what country are you in and what is the budget?
the CX series by corsair is my go to budget suggestion (gray labeled units only - green labeled units are inferior)
 
Jan 21, 2020
7
0
10
0
so you know V x A = W a handy formula
you want a 500W psu to have almost all that wattage on the 12V rail. my 600W unit has 50A on the 12V for 600W that are actually usable. having all the power on 3.3 or 5 is a dead giveaway of an inferior unit.
what country are you in and what is the budget?
the CX series by corsair is my go to budget suggestion (gray labeled units only - green labeled units are inferior)
I really appreciate your help, now I fully get what you are saying. :)
I'm in Hungary, but I can get new stuff from a good source here, under the market price. That's why I asked what should I look for on the label to know which would be suitable. So most of the juice should be on the 12V, now I got that! :D
I will try to hunt down a gray labeled CX then!

Thank you again for helping me out, I guess I will be fine now!
 
Feb 28, 2019
214
9
115
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Hey guys,

I am planning to upgrade several parts of my PC and I am not sure if I have to get a new PSU or the current one will handle the new stuff as well.
My current PSU model: HKC SZU-430 LPDR


The future upgrades:
So I will change my motherboard, since I am getting an Intel i5-2400 CPU instead of my AMD Athlon II X4 631.
I am also getting 2x4GB Corsair CMX4GX3M1A1600C9 RAM instead of my current 2x2GB (unknown).
I am also planning a new 1TB 7200RPM HDD to change the now used 500GB 5400RMP HDD.
And I will also get some new fans on my case, now the only fans are the CPU cooler (basic AMD, and i will buy basic Intel) and the GPU's fan. I will buy 3pcs of these Xilence COO-XPF80.R for the case.
And the most important part, the GPU itself. Now I have an AMD Radeon HD 7750 GPU, and I am planning to buy a 2GB model of the RX series, probably RX 550 or RX 560. As I checked the AMD's site it said 450W PSU for this RX model. Is that 20W difference that big, or my 430W should be enough?

I also did a calculation with the two setups:
Current: https://outervision.com/b/mi2tcA
Planned: https://outervision.com/b/XtIXGN

So guys what do you recommend? Can I keep my current PSU or should I upgrade to a bigger one?

Thank you for your help in advance!
Have a great day!
I would HIGHLY recommend to check out the PSU TIER LIST -

https://linustechtips.com/main/topic/1116640-psu-tier-list-40/

Go tier B and above, as for wattage, your pc can get away with a 450w, however i'd recommend a 550w / 650w for future proofing / possible overclocking.

Also i see you want to upgrade your gpu, i personally recommend to get a RX 570 / 580 (4gb or 8gb) if you can as they are fantastic cards.

Good luck man!
 

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