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  • Mar 2nd, 2021 6:47 pm
[OP]
Member
May 2, 2011
222 posts
40 upvotes

SFX PSU lack of options

I'm starting a new build in the ITX case NR200 and looking at the recommendations for the PSU, I need to look for a 650 or 750w PSU to run my 3070. I have a Ryzen 3600 for the moment and might upgrade the CPU to a 5600x later this year and the GPU to a 3080 if I can find one.

With the current shortage it looks like there's only one viable option with the Corsair SF750 (no 850 option..) as the other 3-4 full modular options have average reviews. I will start tracking the Corsair (with nowinstock) to hopefully get one at msrp shortly, but looking for opinions on what other options would be available now and if 750w is enough...

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14 replies
Member
Apr 15, 2012
229 posts
256 upvotes
I am running 5800x with 3070 in ncase m1 with Sf600 without any problems.
Sr. Member
Jan 19, 2018
921 posts
617 upvotes
I’m running 5600x with 3070 on SF600 Platinum in a NR200P with no issues. You might want more wattage for 3080 though. The new Cooler Master SFX power supplies are very well reviewed too.
Last edited by bobohobo2kx on Feb 22nd, 2021 12:00 pm, edited 1 time in total.
Sr. Member
Sep 13, 2011
970 posts
629 upvotes
Québec
nimor107 wrote: I'm starting a new build in the ITX case NR200 and looking at the recommendations for the PSU, I need to look for a 650 or 750w PSU to run my 3070. I have a Ryzen 3600 for the moment and might upgrade the CPU to a 5600x later this year and the GPU to a 3080 if I can find one.

With the current shortage it looks like there's only one viable option with the Corsair SF750 (no 850 option..) as the other 3-4 full modular options have average reviews. I will start tracking the Corsair (with nowinstock) to hopefully get one at msrp shortly, but looking for opinions on what other options would be available now and if 750w is enough...

Image
Sadly, if you choose to build with SFX and ITX, you will have low choice and high price with very fews advantage.

I did look to build an ITX last year, and my conclusion was to go either micro-atx( with standard parts and place for a good GPU) or with a gaming laptop ( Lenovo Legion).
Deal Addict
Aug 4, 2006
3080 posts
1693 upvotes
Toronto
As someone who jumped on the ITX train early I would recommend going microATX. If you want to add any new features you'll need to replace the motherboard/cpu (and sometimes ram) combo. I have a 4770+H87 board, I need some thunderbolt functionality - I need a new motherboard/cpu/ram to do so (I have a 1070ti in the single slot).

If you truly need a small gaming pc, go for it. Just be ready for lots of compromises now and in the future. I also think those ratings are a little on the high side.
[OP]
Member
May 2, 2011
222 posts
40 upvotes
bobohobo2kx wrote: I’m running 5600x with 3070 on SF600 Platinum in a NR200P with no issues. You might want more wattage for 3080 though. The new Cooler Master SFX power supplies are very well reviewed too.
I had a look initially but some of the reviews on amazon and pcpartpicker mentioned that the fan is loud and ramps up & down constantly. After reading your comment I checked a few YT videos and they all mention how quiet the line is (especially the 850). I might take a chance as they are in stock now and at a reasonable price...
Deal Addict
Jul 26, 2004
3769 posts
997 upvotes
I am using a NR200P with a 3070 right now , got myself one of the Coolermaster V850 SFX that has a " fan problem" . You might hear it if you're going for full silent build. But if you're have any other case fans in there it'll drown out the Powersupply fan ramping up and down. Some reviewers say Coolermaster will have a V2.0 coming out that has a constant fan, no idea when that'll trickle down the supply chain.

I don't notice it ramping up like crazy while on desktop or just surfing the net. I do notice it ramps up when I am starting a game but before my video card's fans become loud enough to drown out the PSU fans. Doesn't annoy me at all.

The other thing to consider is the Corsair SF750 comes with individually sleeved cables which is more esthetic than the flat cables of the cooler master.
Deal Guru
User avatar
Mar 9, 2007
13777 posts
8820 upvotes
Think of the Childre…
Corsair 650w Gold+ powering my 3080 Strix and 5600x, no problems!

WOULD SOMEBODY THINK OF THE CHILDREN!!!
Sr. Member
Apr 13, 2003
586 posts
287 upvotes
North York
I've got two power supplies available:

1. EVGA 850 BQ, 80+ BRONZE 850W - $120
2. CORSAIR CX Series™ CX750M — 750 Watt 80 PLUS® Bronze Certified Modular ATX PSU - $125

Let me know if you need.
Tech Thrive Solutions
Riaz G
CEO, Owner
Web: www.TechThrive.ca | Tel: (647) 361-5977 | Email: riazg@techthrive.ca
Jr. Member
Sep 29, 2011
130 posts
104 upvotes
Quebec
Riaz wrote: I've got two power supplies available:

1. EVGA 850 BQ, 80+ BRONZE 850W - $120
2. CORSAIR CX Series™ CX750M — 750 Watt 80 PLUS® Bronze Certified Modular ATX PSU - $125

Let me know if you need.
Those are not SFX :rolleyes:
Deal Guru
User avatar
Nov 27, 2005
11832 posts
1586 upvotes
Toronto
Unless you absolutely need the smallest footprint possible for some reason, I don't really see much value in going with Mini-ITX and SFX. The limited parts selection is a real detractor. A small MATX+ATX power supply combo is much better bang for the buck. Not to mention, the build itself is much easier with the added real estate.
Sr. Member
User avatar
Apr 29, 2018
956 posts
567 upvotes
Vancouver
I doubt you'd be using 750w, let alone 850w. The only reason I have a 750W PSU, is that the 750W Gamdias was the cheapest option and had pretty good internals from what I could tell.

I would recommend using a PSU Calculator and then buying something close
- https://www.coolermaster.com/power-supply-calculator/
- https://www.newegg.ca/tools/power-supply-calculator/

Also keep in mind
- PSUs are normally made with spare tolerances and will easily supply 10% more power than max
- PSUs are most efficient at around 80% of their max load
- Small PCs while they look cool, are a pain to work on or troubleshoot. Go for mATX or ATX
Sr. Member
User avatar
Apr 29, 2018
956 posts
567 upvotes
Vancouver
Wow, you are paying $213 for a PSU. That is crazy. I paid $70 total including taxes and then got a rebate of $30 for my 750W

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