Rexper

You are thinking about the hold up time. The hold up time affects how long the PSU can last with the input power switched off. The hold up time is kinda low in this PSU, but that's not what OP was asking about.
 
The PWR OK signal is the power good signal. It's the signal the PSU outputs that says if it's power delivery is, well, good.
 
What Ari's tested in the review is the 'PWR_OK inactive to DC loss delay'. Intel requires atleast 1ms, whereas Aris measured -0.2ms, to which he calls the PWR OK signal "fake". What does this mean?
 
Imagine your computers running, and your AC power suddenly drops out. There is some power stored in your PSU caps (about 11ms worth), but eventually the PSU voltages will go out of spec and DC output will stop. The PWR OK should go inactive before the voltages go out of spec.
 
If there is no DC output, would you say the power is good or bad? Obviously is bad, but as the review measured -0.2ms on that PSU it means the PSU is saying no DC output is good (for 0.2ms).
 
For a fraction of a second, whatever is using the PSU sense wires (motherboard) thinks the power supply is feeding it good power when there actually isn't any power.
 
In the end, your computer components could be damaged whenever your AC suddenly drops out.
 
That is my understanding.

The RMx uses in-cable capacitors. They don't really help anything and just make cable managing harder. The RM doesn't have these.

The Asus ROG Strix has specified input voltage as 100V-240V. That will work in any country so long as you have the right power cord.

I would go for the Be Quiet U9.
 
be Quiet U9 review
MWE V2 review
 
The MWE V2 lacks an MOV. This is the component responsible for protection against voltage spikes in the mains.
Both are better than the Corsair CV.

OP already has one of those "dirt cheap EVGA/corsair's", if not better (EVGA BR). Why would anyone swap with another one?!
What do you mean by OEM PSUs? The EVGA BR wouldn't have come from the Dell Optiplex.
 
@Tashipirin
450W is without a doubt enough watts for a GTX 1650 system. That system would consume only about 150W at full load.
The EVGA BR is fine for your system in terms of quality. Here's a review.

The RTX 30 series cards exhibit very large power spikes. These spikes are so quick that most reviewers don't even see them with their testing equipment. They are also so high they trip protections on some PSUs (especially <750w units.. Though, this is more an issue for the RTX 3080/3090.
 
Your PSU would probably work fine. If not, protections would safely shut it down. You can worry then.
 
The efficiency and lifetime argument is a myth. The price you spend to get a higher wattage PSU so it's running at "optimal efficiency" with your PC isn't even covered by the efficiency savings.
But those myths still float around which is why we see such high wattage recommendations.

First, if you're going to compare PSU efficiency you should ignore the 80+ system and instead use Cybenetics.
 
Generally, a Cybenetics Titanium rated PSU performs about 92% efficient while gold is 88% (115V). Though, your RM1000x is actually a platinum PSU with overall 91% efficiency on 240V. A Titanium Corsair AX1600i is overall 94% efficient on 240V
 
At full load your system can consume about 400W (100W from the CPU, 300W from the GPU.
 
I don't know anything about UK electricity prices, so in this example I'll assume it'll rise to 40 p /kWh.
 
For every hour of full system load, you'd save:
400w/1kw * (1/0.91 - 1/0.94) * 40p = 0.56p/hour.
So if you run your pc at full load everyday for 3h/day you'd only save £6.14.
I think you already know how expensive titanium PSUs are too.
 
TLDR - Your PSU is already very efficient and upgrading it is probably not a good investment.

The Intel PSU design guide requires voltages on all rails never to exceed +-5% of the nominal.
For example, voltage must remain within 11.4v and 12.6v on the 12v rail.
That said, the 12V, 5V and 3.3V readings from any program like HWInfo are very inaccurate and unreliable.

If you want to check the voltages, you would have to use a multimeter.
If you find the voltages are within spec, that still doesn't rule out the power supply.
 
Could you provide a full PC parts list?

Everything in that list can be derived without reviews. Suggesting you don't even need reviews to tier PSUs in this list.
 
There are so many more aspects I would endeavour before purchasing a power supply.

Wow the Corsair VS 2017 is higher quality than the much more expensive EVGA G3 and Seasonic Focus Plus.
 
Thank God for this tier list. I had no clue.

Everything in that list can be derived without reviews. Suggesting you don't even need reviews to tier PSUs in this list.
 
There are so many more aspects I would endeavour before purchasing a power supply.

Everything in that list can be derived without reviews. Suggesting you don't even need reviews to tier PSUs in this list.
 
There are so many more aspects I would endeavour before purchasing a power supply.

Plus years and years of research on power supplies yet alone general electronics.
 
The same reviewer tested the GX-1000 too - https://quasarzone.co.kr/bbs/board.php?bo_table=qc_qsz&wr_id=313607&page=2
And the Focus PX (Platinum): https://quasarzone.co.kr/bbs/board.php?bo_table=qc_qsz&wr_id=307283&page=4

You're writing reviews now?
I'll save you the trouble of voiding your warranty.
 
A quick google search found a review of the Seasonic Focus Gx-650, GX-750, and GX-850. It includes brief internal examination, efficiency testing, voltage regulation testing (with crossloads aswell), standby testing, and ripple testing.

You're writing reviews now?
I'll save you the trouble of voiding your warranty.
 
A quick google search found a review of the Seasonic Focus Gx-650, GX-750, and GX-850. It includes brief internal examination, efficiency testing, voltage regulation testing (with crossloads aswell), standby testing, and ripple testing.

You're writing reviews now?
I'll save you the trouble of voiding your warranty.
 
A quick google search found a review of the Seasonic Focus Gx-650, GX-750, and GX-850. It includes brief internal examination, efficiency testing, voltage regulation testing (with crossloads aswell), standby testing, and ripple testing.

Based on internal photos, it looks like a cut down Seasonic Focus.
Key difference being a lower quality fan (sleeve/rifle as opposed to FDB), no passive fan mode, 7 years warranty instead of 10, only a single CPU cable, only a single PCIe cable with two connectors, and of course non modular.
The issues with the Focus Plus involving the effects of over-current I assume are resolved in the Core series.
 
There are no professional reviews or tests, so we can only guess it's electrical and protection performance.

Don't judge by brand. Especially when they're using a different OEM than usual.
 
A video is useless, not results. There is no methodology or hard figures, therefore impossible to compare to other PSUs.
When I turn my headphones down that EVGA GD is pretty darn quiet ?

So a manufacturer that claims to fix a specific issue in the newer model is less reliable than power supplies without anyone testing them that far?
 
Seriously, that was very high overload ripple testing. Most power supplies on this list haven't been tested like that. Therefore all of them should also drop to tier D.

Probably better protections, tighter voltage regulation, lower inrush current. Both values are superb, and negligible from eachother, but it goes to prove the G3 isn't any worse.
 
Oh and Aris' G2 safely passed the OPP test... No. There was no protection test by Aris back then.
But we do know the OCP trigger points for the 550 G2 12V, 5V and 3.3V are 153%, 173% and 173% respectively... And where's the OTP?!
Also, only one of Aris' G3s died during OPP testing (the 1KW unit). The other two (550 and 650w) survived.

So a manufacturer that claims to fix a specific issue in the newer model is less reliable than power supplies without anyone testing them that far?
 
Seriously, that was very high overload ripple testing. Most power supplies on this list haven't been tested like that. Therefore all of them should also drop to tier D.

Though I couldn't find reviews, there are a couple tear-downs.
http://www.jiguo.com/article/article/82568.html
https://zhuanlan.zhihu.com/p/79814425
 
Looks like a Focus platform. For reference, here's a review of the Seasonic Focus FM (not Plus):
http://www.f14lab.com/2018/04/review-seasonic-focus-gold-450w.html

*Pre 2018
https://knowledge.seasonic.com/article/20-focus-plus-and-gpu-potential-compatibility-issues
 

The Seasonic S12ii EVO 450 does not use the same platform as the common S12ii/M12ii, nor the Seasonic ST.
 
Here's what the current m12ii platform (GB) looks like:
http://www.f14lab.com/2018/01/review-seasonic-m12ii-evo-620-beta.html
 
And here's the Seasonic ST platform seen from the Seasonic Eco 430w: 
https://nl.hardware.info/reviews/5934/seasonic-eco-430w-voeding-review-betaalbare-seasonic-voeding
 
The S12ii evo (GB2) is quite a  new product. I believe it hit markets during 2018. The datasheet, with photos, indicates a completely different platform: https://seasonic.com/pub/media/pdf/consumer/datasheet/S12II-EVO-GB2.pdf
The only internal shot I could find: https://www.overclockzone.com/forums/showthread.php/3404864-Power-Supply-Guide-(New)?s=7027ff47086a3ff0aa900bcec6a9cc68&p=75154325&viewfull=1#post75154325
 
It actually looks alot like the new S12iii power supplies (GB3):
http://www.f14lab.com/2019/05/review-seasonic-s12iii-500550650.html
It also has identical power distribution with the S12iii.
Perhaps the S12ii EVO simply lacks the LLC resonant converter.
 
If true, and the S12iii 450 follows the same topology / platform used in the 500/550/600w versions in the review, it's not such a bad unit. Personally I wouldn't use it as OTP is not specified in the specs.

If you care about noise output then the RM 2019 is also a better choice than TXM.
 
It is clearly better than a FSP Aurum CM from Tier B, but I wouldn't say as good as a Antec High Current Gamer M 850W from Tier C or some high-end Raidmax PSU's from Tier D.