Rexper

Even if the caps were slightly better, would it even matter since they both have 10 year warranty?

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.

Your PSU is decent quality and should handle your system. If you have a spare PSU to test in your system try that. Try use two separate PCIe cables to power the GPU. Also use DDU and reinstall your graphics drivers to the latest version.

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?

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.

Yeah cause it's subjective. All the creators of the tier list care about is protections which is stupid for alot of people. Ignore it. Who is hardly necessary untill you get to very high wattage (atleast 750). Or the very rare case of a short which the SCP of UVP doesn't detect, the multi rail unit should shutdown slightly earlier and may save a component How much a unit sells has nothing to do with the quality of the power supply.

First of all, if you have the time and effort to create a thread and read reviews, DITCH the tierlists. They're crap for anyone that actually cares about the PSU choice. JonnyGURU doesn't write the reviews, that's just the name of the site (and the founder). Also, the number rating is almost as useless as the tier list. I suggest you read the whole review. No. You cant 100% depend on it. They don't go very in depth. Also, it's more reliable to judge based on a variety of review. Between 500 and 600w PSUs from the same model usually hardly change. From 650 to 750 however some power supplies will completely change their platform.

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.

Usually it's not worth the price gap. But you're paying for more than just efficiency; the quality and electrical performance is what matters. It's simple math. Take a Cybenetics report of an efficient PSU (eg. Corsair AXi), and find it's efficiency at each load at your voltage (120V or 240V). Calculate how much power your system will use at different workloads, and the average length of that workload per day. Lastly plug in your electricity prices and repeat the math with a less efficient power supply.

I couldn't find it, but the supervisor IC alone isn't enough to tell you if the protections work. Because it's subjective and has inconsistent sorting methodology. Depending on a person's situation they may value different traits of the PSU.

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.

Not that I'm on anyone's side here... The S12ii and M12ii uses the HY510N as seen by this review. This IC does support UVP on the minor rails (3.3V and 5V) but not 12V. The PSU lacks OCP on every rail. And has no OTP. As per the review I linked, the 12V rail drops to 11.633V during a crossload test. Though in spec, this put strain on modern demanding components as the 12V rail deviate +-242mV as the workload deviates. The Haswell C6/C7 sleep states require a sort of crossload that this unit and any other group regulated power supply cannot handle. Evidence? Last I checked no one has tested the protections on the S12ii/m12ii.

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

That's not true. Take this Kolink for example: https://www.tweakpc.de/hardware/tests/netzteile/kolink_sfx-350/s06.php OCP on the 3.3V rail is missing, it drew up to 35A (it's a 350w power supply). UVP is missing on the 3.3V rail, you see it drop to 0.2V... However SCP was atleast half functioning. What you're telling me is I can't make a blanket answer regarding how beneficial multirail is, because it depends on the protections and the power supply as a whole. So why do you make a blanket criteria in the tier list that all high watt single rail are below Tier A?!

Really? When? Only when the 12V rail shorts. And even then, you have UVP and SCP to protect you. Heck, maybe even OTP could help. I'm no electrical engineer, but I'd expect the single shorted wire to produce so much heat it's resistance would rise quickly, and the UVP would trigger before the max wattage.

You know how Seasonic is with marketing. The S12iii was never marketed with independent regulation. The 450w version also has 35A. Though reviews suggest it uses dual mag-amp (atleast the higher wattage models) which is a form of independent regulation. Nah, I use the Wayback Machine to view it.

How do you know that Evo is group regulated?

Every part that I could identify is in the same position. From right to left (moving through EMI filter to APFC): X cap, choke, x cap, film cap, heat sink, bridge rectifier, relay, NTC thermistor, the two y caps in the corner, all in the same position. That even looks like a Teapo LG used in the S12ii EVO. I'd be very surprised if the S12iii wasn't derived from the platform used on the S12ii EVO. The secondary topology, though... who knows.

Without proper reviews or a decent internal shot, I wouldn't. There's too many things we don't know and assumptions we're taking. OTP is Over Temperature Protection. Basically, it prevents further harm to your power supply when there's a fan blockage, big airflow restriction, or when the fan dies. When the PSU overheats, parts will go out of wack and can fry your computer parts. According to Seasonic, the power supply is rated for 40C. Where I live, it isn't rare for ambients to rise over 40C, which is another reason why I would avoid this unit. I couldn't see any MOV in there. If it were using the same platform as the S12iii, the MOV would be located in between that red film cap and the X capacitor in the transient filter stage. The MOV (Metal Oxide Varistor) is used to protect the power supply and computer from voltage spikes from the mains. As I live in a storm-prone region, I consider the lack of an MOV as a pretty big con.

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.

Using calculations and temperature data, we can get a rough estimate of quality. Atleast to split the capacitor into three different "tiers". It's actually measured in the reviews as frequently as protections are tested. And you seem to be all up the protection tests so... For cheap power supplies, the first part to go is usually the fan or caps (according to Aris). And I thought assuming was the whole point of this list. Assuming the audience's system and compatibility needs, assuming they need protections, assuming they are using Vega GPUs... There are units in higher tiers with the exact same issues, of worse. So I really have no idea where you want to put it. Thought you said that doesn't matter. Also irrelevant to the tier list.