Discussion Power supply / PSU models - What to buy, what to avoid - And PSU discussion thread

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4745454b

Titan
Moderator
I could see someone choosing to SLI or CF as a reason to return. By a 500W PSU now only to decide to take the step and needing to return it to get a 750+. (or not CF/SLI and need to step down to a 550.)

It is a judgement call. I've ran used PSUs before. Never had anything bad happen.
 

Rogue Leader

It's a trap!
Moderator
There's another thing to think about. Refurbished PSU means that original purchaser returned the PSU for some reason. If the PSU is solid, why get rid of it? Also, how proud you'd feel if you're using someone else's junk?
I sold (but would have returned if I could) my Seasonic Prime Titanium 650 because I understimated how hard the Radeon RX Vega 64 LC was on PSU's. Kept hitting OCP in some games. Got a 750 and I'm all good now.

With components frying during lightning strike - here, i'd look towards electricity grid itself.

1st line of defense: properly installed lightning rod(s)
2nd line: underground power lines (no air lines)
3rd line: up-to-the-date and good quality breakers inside electrical substation and every home as well

With all those in place, everyone's hardware would be safe.
Theres no way to be 100% safe. All of those are great however not everyone has those options available to them. Also you never know what can happen. In the early 2000's my parents house got hit by lightning and it actually hit the cable TV line. Since we had cable internet it actually fried my cable modem, router, and everything connected to the router including the network adapter in my pc, the network adapter on my PS2, and so on. Surprisingly it didn't damage the TVs or cable boxes as all of them were connected to a distributor box that basically just blew up (and thankfully my dad was home to put out the fire before it went anywhere). The line coming into the house was split, 1 to the box, and 1 direct to the modem.
 

Saga Lout

Olde English
Moderator
I have to stand for the defence of Corsair to a certain length. CX is the only PSU you can buy in the town I live near in England. Records show that in the last six years I've bought forty seven from the trade counter.

The earliest ones must be working fine or I have would have heard from my customers. I concede that lightning strikes are rare in the UK and the majority of those I bought are 450s. My main business doesn't attract many gamers or high end builders but for me, Corsair are pretty strong units.
 

Darkbreeze

Titan
Moderator
For the same reason someone gets rid of an older car, to upgrade.

Not saying this applies to all PSUs, but people upgrading GPUs in prebuilt usually upgrade the working OEM PSU in favor of higher wattage.
And better quality. While some OEMs ship their units with half decent Delta or Seasonic or a few other semi-quality units, not all do, and not all do on ALL of their prebuilts. Obviously at some price point something has to give, and it's usually the power supply. So, that is always a good place to start upgrading if you don't have a proprietary form factor.
 

Rogue Leader

It's a trap!
Moderator
Wasnt there some issues with the focus units? Like ripple and ocp issues?
Some of the FOCUS Plus models IIRC had issues powering Vega 64 and 56 as well as certain GTX 970 models. The GTX 970 problem was solved with a replacement cable, the Vegas were not. Mine will pull down almost 400w on a spike which is insane.

But i digress, the FOCUS and Prime are different platforms. In my case my whole system was pulling down around 700w while gaming, meaning 650w won't do. While its a quality PSU it was able to handle it, spikes would often trigger OCP as expected of course.
 

Rogue Leader

It's a trap!
Moderator
Wow.

I thought it was crazy when I say my RX480 hit 200w when I flashed an RX580 bios it didn't like.
Yes AMD is lucky Vega was never that popular or you'd have a lot of unhappy customers with systems that crash a lot. I am very happy with the performance and compatibility of my Vega 64, it really crushes everything I throw at it, but the power usage when you have it at its best performance settings is absurd.
 

Rogue Leader

It's a trap!
Moderator
Given the Vega 64 LC is a 350W TDP card, 400W doesn't seem like it would be that unusual unfortunately.
Right, I built the system about 6 months before its release and believed the hype that it wouldn't be "that bad". Then i preordered one and had it on launch day. I was clearly wrong and ended up having to replace a fairly expensive only 6 month old PSU. That said at first it didn't nearly pull down as much power as later driver updates allowed it to. Performance on it went up, at the expense of power usage. I did get $100 for the old one on eBay though so my net loss was only about $50 after rebates and stuff on the 750w unit.
 
Reactions: TJ Hooker

Darkbreeze

Titan
Moderator
Which is ANOTHER reason why, despite what some people, even some in positions of experience and knowledge that should know better, say, regarding what a system actually needs, I STILL tend to over exaggerate the recommendation on capacity for systems even beyond what is already exaggerated at RealhardtechX for a given graphics card, because Vega isn't the only GPU architecture that has been known to creep up in power demand over time due to changes in drivers. If you base the GPU requirements off the connectors, not off the initial review testing recommendations, and then add about 40% to THAT in addition to the requirements of the rest of the system, you'll probably never run into a situation where that happens.
 
Oct 1, 2019
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FYI to everyone: the EVGA G5 is an FSP Active Clamp platform, NOT the Super Flower Leadex III as was claimed in the original post.
Also, there is a pretty big difference in the quality between CX and CXm black label, being that CX is better due to its HBLLC primary topology vs the CXm's DF.
One last thing everyone should know is that according to computerbase.de, the Seasonic S12II (can be extrapolated to M12II and evo, as they also use the HY-510N supervisor IC) drops to 8.7V under a 12V overload, which as can be imagined is pretty bad.
 
FYI to everyone: the EVGA G5 is an FSP Active Clamp platform, NOT the Super Flower Leadex III as was claimed in the original post.
Also, there is a pretty big difference in the quality between CX and CXm black label, being that CX is better due to its HBLLC primary topology vs the CXm's DF.
One last thing everyone should know is that according to computerbase.de, the Seasonic S12II (can be extrapolated to M12II and evo, as they also use the HY-510N supervisor IC) drops to 8.7V under a 12V overload, which as can be imagined is pretty bad.
Dude, this isn't the Linus forum. We actually know what we are talking about. Repeating the same half dozen talking points in a loop doesn't make you a PSU expert.
 

Darkbreeze

Titan
Moderator
Speaking of which, a review, and it's NOT promising. At least not for this model and likely, not for the rest of the lineup if it's anything like this.

The SuperNOVA 1000 G5 costs about the same as the similar-capacity G3 model that it is destined to replace in EVGA's portfolio. Unfortunately, its performance is not up to the G3 unit's levels and to make matters worse, the overall noise output exceeds 43 dB(A), so this is not the ideal power supply for silent operating systems. U.S. tariffs put an end to EVGA's close cooperation with Super Flower, so EVGA turned to FSP which is a good OEM with reliable products, but it cannot meet the performance levels of the Leadex platforms, used in the G3 models.
https://www.tomshardware.com/reviews/evga-supernova-1000-g5-power-supply,6337.html
 

Rogue Leader

It's a trap!
Moderator

Darkbreeze

Titan
Moderator
Yes, I think this is the beginning of seeing EVGA become more like FSP in the way of "Yeah, they COULD offer better units but don't". I think this is on EVGA this time, not FSP, because FSP has some very good models out there so we know they CAN do it. EVGA just didn't require them to do it.
 

4745454b

Titan
Moderator
I wonder why they didn't get a better FSP model. Don't they make better?

Anyone hear from Delta in awhile? I miss them. Which they'd come back to the consumer space. We could use a another player.
 

Darkbreeze

Titan
Moderator
Delta probably makes plenty in the enterprise and industrial sectors, since they fairly well have a big chunk of that market locked down, not to mention making OEM units for many of the prebuilt manufacturers. They're probably like, pfffft, why would we? Plus, as a company, they have their fingers into a lot of other areas than just power supplies. Probably industrial fans is big for them as well, among other things.
 

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