550w gold for 3070 enough?

oversleep · 9 Sep 2021 at 16:56

Would it the 550w PSU be enough for 3070?

PSU super flower golden green 550w 80 plus gold

2 x 6+2-Pin-PCIe in one wire.

EVGA 3070 FTW3 Ultra

Two available 8-pin or 6+2pin PCIe

Current system

CPU - 5800x
MB - Gigabyte Aorus b550 Pro AC rev 1.1
RAM - 32 GB (16x2)Crucial Ballistix BL2K16G36C16U4R 3600 MHz, DDR4,
HD - WD Blue SN550 1TB
2 x HDD
1 x SSD
Cooler Noctua U14s ( from old system)
4 x case fan

turbot1984 · 9 Sep 2021 at 17:02

oversleep said:
Would it the 550w PSU be enough for 3070?

PSU super flower golden green 550w 80 plus gold

2 x 6+2-Pin-PCIe in one wire.

EVGA 3070 FTW3 Ultra

Two available 8-pin or 6+2pin PCIe

Current system

CPU - 5800x
MB - Gigabyte Aorus b550 Pro AC rev 1.1
RAM - 32 GB (16x2)Crucial Ballistix BL2K16G36C16U4R 3600 MHz, DDR4,
HD - WD Blue SN550 1TB
2 x HDD
1 x SSD
Cooler Noctua U14s ( from old system)
4 x case fan

Well, the chaps at EVGA say 650W? daft to skimp on PSU when a 750W isn't going to be a huge lot more

flea.rider · 9 Sep 2021 at 17:16

with power draw .. not being true .. a 750w would be a better choice myself i would get an 850w .. only because i like room to breath oc and such ..

Joxeon · 9 Sep 2021 at 17:37

220w GPU
140w CPU
70w for the rest

So should be enough but you don't have much room if you want to upgrade in the future or overclock.

pastymuncher · 9 Sep 2021 at 18:47

I really wouldn't advise it especially with that particular 3070 as it will draw more power than a standard card. My pc with the cpu at stock and the gpu at stock pulls a maximum of 458w at the wall under the worst case scenario. Even in certain games I am seeing over 330w at the wall. I was also suffering from the Power Kernel 41 error where the pc will just shut down and reboot in the middle of a game and could be related to the power spikes from these RTX3000 series card although it only crashed in this single game. I had a suspect pin on my psu though, a Aerocool Project 7 650w Platinum which is a excellent psu but using a multimeter pin 11 which should read 12v was only reading 8.63v so it got RMA'd. In the meantime I got a 2021 Corsair RM850x and no more crashes so whatever was causing it has been fixed.

philo-sofa · 15 Sep 2021 at 22:28

It's just enough. However I wouldn't keep the system overclocked or push GPU power limits.

However, given how cheap an RM850x is, you should consider whether it's really worth economising.

oversleep · 16 Sep 2021 at 05:27

philo-sofa said:
It's just enough. However I wouldn't keep the system overclocked or push GPU power limits.

However, given how cheap an RM850x is, you should consider whether it's really worth economising.

Would the corsair rmx750 also be a good choice?

pastymuncher · 16 Sep 2021 at 09:29

It should be ok. We were recommending the RM850x because it was only £109.99 and cheaper than the RM750x when I posted last week but unfortunately the deal has ended now. The Phanteks Amp 850w is only £114.98 and a excellent alternative.

philo-sofa · 17 Sep 2021 at 03:11

oversleep said:
Would the corsair rmx750 also be a good choice?

Agree with @pastymuncher that the RM 750x is a fine choice too. The 850w version gives you a bit more headroom for the 400+w cards that are allegedly incoming next-gen, but in reality 750w is fine unless you're planning on putting a 4090 into it next year.

pastymuncher · 17 Sep 2021 at 13:06

One thing about the Corsair RMx series I don't like is the cables. Mine is the 2021 version and the cables are ugly, bulky and very stiff. It's impossible to get a tight bend on the 24 pin and 8 pin EPS due to the stiffness and bulk because of the added capacitors so I am using my braided extensions again. No wonder people pay silly amounts for aftermarket cables!!

oversleep · 17 Sep 2021 at 14:05

pastymuncher said:
One thing about the Corsair RMx series I don't like is the cables. Mine is the 2021 version and the cables are ugly, bulky and very stiff. It's impossible to get a tight bend on the 24 pin and 8 pin EPS due to the stiffness and bulk because of the added capacitors so I am using my braided extensions again. No wonder people pay silly amounts for aftermarket cables!!

Any recommendation for the after market extension cable?

Changesx · 18 Sep 2021 at 00:13

Any recommendations for PSUs without the bulky cables? That’s also a problem I noticed on my friends PC with the RM750X

pastymuncher · 19 Sep 2021 at 11:53

oversleep said:
Any recommendation for the after market extension cable?

There are full cable sets from the likes of Cablemod and I also believe Corsair sell them as well (what a surprise) but they are stupidly expensive and can cost as much as the psu itself. Personally I prefer cable extensions as they fit all psu's, look good and are much cheaper than a full cable set. The downside is that now you have double the cable length to hide. I am currently using Phanteks extensions (this set) but have also used Bitfenix Alchemy cables and have had zero problems with either. What I like about the Phanteks set is that they come with cable combs. I use these (come in different sizes) on them which enable me to get a nice tight 180 degree bend which neatens things up a lot.

As for suggestions of PSU's without bulky cables I can't really comment as you don't know how stiff they can be until you handle them so checking reviews and user feedback would be a good start. Any PSU's with capacitors in the cables are going to be bulky so that's many Corsair Units for a start. Again, reviews are a good source of information and usually state when a PSU's cables have capacitors in them. The capacitors are there to primarily filter out ripple although most aftermarket cable sets seem to manage well enough without them.