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 The newbie guide to power supply units, Questions and comments are welcomed

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PJng
post Jun 29 2023, 11:35 AM

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QUOTE(Andrewtst @ Jun 29 2023, 11:22 AM)
Yup MAX output for GPU is 320W only. This same as CPU as well.
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Look like is safe, to install GPU around that 200w
CPU is i5 12400F, don think can use until 300w

This post has been edited by PJng: Jun 29 2023, 11:35 AM
Andrewtst
post Jun 29 2023, 01:04 PM

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QUOTE(PJng @ Jun 29 2023, 11:35 AM)
Look like is safe, to install GPU around that 200w
CPU is i5 12400F, don think can use until 300w
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I think should be enough. 😊
babylon52281
post Jun 29 2023, 09:57 PM

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QUOTE(PJng @ Jun 29 2023, 11:35 AM)
Look like is safe, to install GPU around that 200w
CPU is i5 12400F, don think can use until 300w
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Becareful if you try to use a 200W GPU esp from Ampere gen, what the PSU needed ie 500W is not factored in transient spikes which could go way up. Lets say for 3060Ti, you will need a 650W PSU.
PJng
post Jun 29 2023, 09:59 PM

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QUOTE(babylon52281 @ Jun 29 2023, 09:57 PM)
Becareful if you try to use a 200W GPU esp from Ampere gen, what the PSU needed ie 500W is not factored in transient spikes which could go way up. Lets say for 3060Ti, you will need a 650W PSU.
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Not to upgrade right now, pc in warranty not sure can upgrade GPU or not
So is safe max 3050 or 3060, not higher than that
TSchocobo7779
post Jun 30 2023, 12:47 AM

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QUOTE(munchoong @ May 14 2023, 12:16 PM)
I am seriously considering the Corsair RM850X

It's more than enough to run my rig right?

Asus Prime X470 Pro
Ryzen 5 1600
Radeon RX6600XT
3pc 120mm fans
2pc 80mm fans
1pc 200mm fan
1 5.25" BD-ROM drive
1 5.25" card reader
1 3.5" mechanical drive
2 2.5" SATA SSD
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Plenty, even if you go for a high end GPU in the future icon_idea.gif

This post has been edited by chocobo7779: Jun 30 2023, 01:00 AM
TSchocobo7779
post Jun 30 2023, 01:39 AM

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QUOTE(yellowflashdude @ May 14 2023, 12:24 PM)
I currently have a 550w 80+ bronze psu. Planning to upgrade to a 4070 which doesn't draw more than 200w at load for gaming (based on benchmarking videos).
https://www.techpowerup.com/gpu-specs/geforce-rtx-4070.c3924

Please advise whether Im being stupid or not over this?
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Exact make and model of the PSU itself? hmm.gif
A 4070 isn't a power demanding GPU, so a 550W unit is plenty sufficient provided that it's a quality unit icon_idea.gif
babylon52281
post Jun 30 2023, 09:16 AM

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QUOTE(chocobo7779 @ Jun 30 2023, 01:39 AM)
Exact make and model of the PSU itself? hmm.gif
A 4070 isn't a power demanding GPU, so a 550W unit is plenty sufficient provided that it's a quality unit icon_idea.gif
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Dont look at the TDP on paper, real world measurement a 4070 "eats" nearly 50% more

user posted image

This not yet factored in transient spikes, and depending on which CPU & other components. Even a decent 13500 system will overload a 550W PSU once it PL2 turbo for 60 secs.
TSchocobo7779
post Jul 1 2023, 10:40 AM

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QUOTE(babylon52281 @ Jun 30 2023, 09:16 AM)
Dont look at the TDP on paper, real world measurement a 4070 "eats" nearly 50% more

user posted image

This not yet factored in transient spikes, and depending on which CPU & other components. Even a decent 13500 system will overload a 550W PSU once it PL2 turbo for 60 secs.
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The transient power spikes of a 4070 isn't as much as you think:

user posted image

If you are only gaming a 550W unit is going to be fine for a 4070, as long as it's a quality unit icon_idea.gif

QUOTE
Even a decent 13500 system will overload a 550W PSU once it PL2 turbo for 60 secs.

That depends on the load, as power consumption of modern CPUs in gaming is actually quite low (compared to the rated TDP), unless you are talking about very intensive, multithreaded workloads (like 3D work) icon_idea.gif

This post has been edited by chocobo7779: Jul 1 2023, 10:56 AM
peter32
post Jul 5 2023, 03:35 PM

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- message cancelled -

This post has been edited by peter32: Jul 5 2023, 04:28 PM
babylon52281
post Jul 5 2023, 05:22 PM

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QUOTE(peter32 @ Jul 5 2023, 03:35 PM)
My current project requiring me to power dual Xeon CPU on motherboard. So I got myself a FSP HV PRO 85+ Bronze 650W, which was described to have 2 8 and 4+4 EPS connectors built-in.

Now I have the items with me, turned out that the so-called 2 EPS is actually an extension of the 8pin to another 4+4 pins.

Question1; can I use both connectors from the same cable to power up dual CPU? Can the cable sustain the potential power that might flow through the same cable.

Question 2: This China made motherboard gave instructions that if our PSU  has only one EPS, we can use one PCI4 6+2 pins, connect the 6 pins into the CPU connector but reverse the orientation, ie. face the clip opposite to the clip on the CPU connector.  Has anyone done this before and how safe it is. I tried to search online but such tweak is hard to find online. 

Thank you and have a great day.
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I have that HV Pro, its just a cheapish but usable desktop PSU for mid lower tier PC not something I would put into a server grade workstation ie dual Xeons.
Yes the 'dual' EPS is coming from single rail and so I guess its not really meant to power separate CPUs.

You will need something in Gold or Platinum level and around 1000W or so depending on how may addons. A server PSU is meant for this mobo but if buying off market, then get a modular cable PSU that has separate dual EPS connections.

Something like this
user posted image

And please DO NOT try connect PCIE power to EPS. Physically they are keyed differently no matter how you orient, and they are wired differently so it will short the mobo if you tried.
peter32
post Jul 6 2023, 12:55 PM

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Thank you very much for the input. Looks like changing the PSU is the only way forward. Its confusing because the spec of this HV Pro said it came with dua EPS connector, thats why I bought it. Besides, I do not use high end graphic card nor many hardisk for the tsk, so in terms of wattage its more than enough for my usage.
Skylinestar
post Sep 5 2023, 03:02 PM

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currently, do all mid-high end psu come with 12vhpwr cable?
myway1985
post Sep 5 2023, 08:50 PM

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QUOTE(Skylinestar @ Sep 5 2023, 03:02 PM)
currently, do all mid-high end psu come with 12vhpwr cable?
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YES N its phase out soon..
babylon52281
post Sep 7 2023, 12:09 AM

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QUOTE(Skylinestar @ Sep 5 2023, 03:02 PM)
currently, do all mid-high end psu come with 12vhpwr cable?
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If by high end means modular, most of these are configured to output to PCIE or 12VHPWR and some have dedicated 12VHPWR rails. As myway said, 12VHPWR will be replaced by 12V 2x6 but not so soonish https://www.pcgamer.com/thank-the-gpu-gods-...hpwr-connector/

Duckies
post Sep 19 2023, 03:25 PM

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QUOTE(babylon52281 @ Sep 7 2023, 12:09 AM)
If by high end means modular, most of these are configured to output to PCIE or 12VHPWR and some have dedicated 12VHPWR rails. As myway said, 12VHPWR will be replaced by 12V 2x6 but not so soonish https://www.pcgamer.com/thank-the-gpu-gods-...hpwr-connector/
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Is the port same? If not should I wait for new one comes out then only buy the new PSU? Is FSP Hydro TI Pro 1000W a good ATX 3.0 PSU?
babylon52281
post Sep 19 2023, 06:23 PM

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QUOTE(Duckies @ Sep 19 2023, 03:25 PM)
Is the port same? If not should I wait for new one comes out then only buy the new PSU? Is FSP Hydro TI Pro 1000W a good ATX 3.0 PSU?
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Nobody outside knows the details for sure but it would appear to be backwards compatible with 12VHPWR just redesigned to have better safety margins. If can wait until 2025 why not, if cannot wait then why not buy now?

Call me biased as I have an FSP PSU myself (not this unit mentioned thou) but here is what Aris of HWB have to say: "There is a new king in the 1000W category. The FSP Hydro Ti Pro 1000W unit offers jaw-dropping performance in almost every area, especially transient response, which matters the most in real-life conditions."

He is undisputedly the PSU God and you can read his review here https://hwbusters.com/psus/fsp-hydro-ti-pro...-psu-review/11/
iZuDeeN
post Jan 4 2024, 12:40 PM

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Guys my PSU just died.. I think

I’m using seasonic 850w platinum series… any recommendations replacement.


If possible platinum rated as well pair with 3080 and 3600x.. and lots of rgb

user posted image

This post has been edited by iZuDeeN: Jan 4 2024, 12:49 PM
babylon52281
post Jan 5 2024, 01:34 AM

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QUOTE(iZuDeeN @ Jan 4 2024, 12:40 PM)
Guys my PSU just died.. I think

I’m using seasonic 850w platinum series… any recommendations replacement.
If possible platinum rated as well pair with 3080 and 3600x.. and lots of rgb

user posted image
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https://cultists.network/140/psu-tier-list/
adamtayy
post Jan 9 2024, 04:34 PM

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Nice.. X-silent
adamtayy
post Jan 9 2024, 04:41 PM

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QUOTE(Duckies @ Sep 19 2023, 03:25 PM)
Is the port same? If not should I wait for new one comes out then only buy the new PSU? Is FSP Hydro TI Pro 1000W a good ATX 3.0 PSU?
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Why choose 1000 watt

Sub 750watt cannot?

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