Corsair CP-9020070-UK Professional Platinum Series 1200 W ATX/EPS Fully Modular Power Supply Unit, Black

This '80 plus platinum' rated PSU is great - and also a TIER ONE on the community tomshardware PSU rating list. I urge you to seek this list out yourself to look at your best options and never buy one blindly - the PSU is always overlooked and it's responsible for the wellbeing of all your components. If it goes, it needs to not take everything else with it.My previous one was a Corsair CX750 which is neither modular nor up to anything strenuous (Tier 4 of 5), also only "80 plus bronze", and given how often I have it switched on, it was time for an upgrade.After seeking a really power efficient and MODULAR PSU (the cable management was finally getting to me), I found an EVGA 850W T2 (Titanium) for ~£190 on ebay (Titanium being the maximum efficiency rating at the time of writing, even over Platinum), but it had horrible coil whine even when idle. First time i've ever had that :( I'm currently in the process of sending this back, and it's a shame because it was very sleek, much like this Corsair model.but my point is - with this PSU, I get the power efficiency I wanted (platinum and titanium are pretty much the same efficiency which is of course load-dependent) at £60 cheaper, AND I don't have to put up with that annoying chirping because Corsair are actually capable of glueing their parts together properly! ;)Pros:+ Fully modular with testing port+ I experienced no coil whine, YMMV+ "80 plus Platinum" efficiency rating (~92% at optimal load)+ Good price over other platinum models+ The wires are more flexible than an EVGA model for bending around the case+ Tier one PSU - comes with all the benefits therein (for example: Haswell certified, meaning they can cope with the C6 and C7 sleep states of 0.05Amps without triggering the under-current protection switch)Cons?- Unlike EVGA, the fan doesn't have an 'eco' switch option, the fan is set to automatically spin when needed (under high load)- Accompanying paperwork e.t.c in box doesn't look as flashy as EVGA's, but it's the unit that counts.Thank you, Corsair!

This power supply arrived today and I fitted it a few hours after I got it. It took about 30 minutes to fit. I used it to replace a 650w semi modular psu. This new unit is more powerful in preparation for a new graphics card and also to provide smoother power delivery for the whole system.Good:Very quiet, silent even as there's no fan movement at anything that I've used it for yet.As mentioned, smoother power delivery and sufficient supply for the system; water cooled CPU, 5 fans in total, 4 drives (NVME M2, SSD, 2 * hdd's), external sound card, etc..Sufficient power for a new RTX 2080 ti or something similar (currently GTX 980ti).Not so good:Has 'high quality' cables which have capacitors built in (type 4) which were replacing the older cables (type 3). These new cables are very hard to bend in places as the capacitors make them stiffer. The capacitors are a good thing except that it's difficult to get the cables to fit just how you want them to. The 8 pin power cable to the motherboard was particularly difficult to fit. In the end I unplugged it from the psu and fitted it to the motherboard then threaded it back to the psu.If I was buying another I might go for the HX850i or similar so that I could use the Corsair link software for monitoring and tweaking though I understand the HX850i comes with the older type 3 cables so might want to upgrade these. The prices of both HX850 and HX850i are similar (about £10 more for the HX850i).Very happy, easy enough to fit, silent running and would buy this or similar again.

Brilliant, worth the extra money. This runs well, is quiet, and provides a decent power level for the subsystem I am using it for. Stable and reliable. I previously used cheaper PSUs but it's really worth the extra money for a decent unit like this.I am running it at 80% and have confidence in it.I would buy this again for a similar situation without hesitation.Of particular benefit is the fully-modular aspect: no more ridiculous octpus of cables getting in the way. You just use the cables you need, which are all supplied (and are of high quality).

No issues. Was bought to replace a 430W Corsair and I needed a bigger wattage PSU so I could get a graphics card. This one is a lot more efficient and the fan only comes on if it's drawing lots of power. Most of the time, it's turned off. It's also modular so I don't need every cable to be attached. There's plenty of cables for future devices.