Enough wattage?

[Plexez_]

My friend wanted me to build him a pc, he's pretty rich, i showed this build to another friend and he's saying 750w isn't enough. Can someone tell me who's right here?

Part list:

PCPartPicker part list / Price breakdown by merchant

Type	Item	Price
CPU	Intel - Core i9-9900K 3.6 GHz 8-Core Processor	£464.40 @ CCL Computers
CPU Cooler	NZXT - Kraken X72 Liquid CPU Cooler	£154.99 @ Amazon UK
Motherboard	Asus - ROG STRIX Z390-E GAMING ATX LGA1151 Motherboard	£210.46 @ CCL Computers
Memory	G.Skill - Trident Z RGB 32 GB (4 x 8 GB) DDR4-3200 Memory	£237.59 @ Amazon UK
Storage	Western Digital - Blue 1 TB 2.5" Solid State Drive	£115.44 @ CCL Computers
Storage	Seagate - BarraCuda 1 TB 3.5" 7200RPM Internal Hard Drive	£34.50 @ Amazon UK
Video Card	Gigabyte - GeForce RTX 2080 Ti 11 GB AORUS XTREME Video Card	£1146.60 @ CCL Computers
Case	Corsair - SPEC-OMEGA RGB ATX Mid Tower Case	£140.60 @ Box Limited
Power Supply	Corsair - CXM 750 W 80+ Bronze Certified Semi-Modular ATX Power Supply	£84.33 @ CCL Computers
	Prices include shipping, taxes, rebates, and discounts
	Total	£2588.91
	Generated by PCPartPicker 2019-04-21 16:13 BST+0100

 

[Skiiwee29]

750w is more than enough. 

[Plexez_]

1 minute ago, Skiiwee29 said:

750w is more than enough. 

What about with overclocking?

[XR6]

2 minutes ago, Plexez_ said:

What about with overclocking?

It'd be fine, 750W would still be more than enough. You'd only be using about 500W, maybe 600W at a push.

[Skiiwee29]

Just now, Plexez_ said:

What about with overclocking?

easily. Overclocked and everything at 100% you wouldnt use more than 500w most likely. 

[Ankerson]

23 minutes ago, Plexez_ said:

My friend wanted me to build him a pc, he's pretty rich, i showed this build to another friend and he's saying 750w isn't enough. Can someone tell me who's right here?

Part list:

PCPartPicker part list / Price breakdown by merchant

Type	Item	Price
CPU	Intel - Core i9-9900K 3.6 GHz 8-Core Processor	£464.40 @ CCL Computers
CPU Cooler	NZXT - Kraken X72 Liquid CPU Cooler	£154.99 @ Amazon UK
Motherboard	Asus - ROG STRIX Z390-E GAMING ATX LGA1151 Motherboard	£210.46 @ CCL Computers
Memory	G.Skill - Trident Z RGB 32 GB (4 x 8 GB) DDR4-3200 Memory	£237.59 @ Amazon UK
Storage	Western Digital - Blue 1 TB 2.5" Solid State Drive	£115.44 @ CCL Computers
Storage	Seagate - BarraCuda 1 TB 3.5" 7200RPM Internal Hard Drive	£34.50 @ Amazon UK
Video Card	Gigabyte - GeForce RTX 2080 Ti 11 GB AORUS XTREME Video Card	£1146.60 @ CCL Computers
Case	Corsair - SPEC-OMEGA RGB ATX Mid Tower Case	£140.60 @ Box Limited
Power Supply	Corsair - CXM 750 W 80+ Bronze Certified Semi-Modular ATX Power Supply	£84.33 @ CCL Computers
	Prices include shipping, taxes, rebates, and discounts
	Total	£2588.91
	Generated by PCPartPicker 2019-04-21 16:13 BST+0100

 

 

I would change the PSU to a good one, the CX is a budget PSU and NOT recommended for high end systems. I absolutely wouldn't even think about using that PSU with that system under any circumstances period.

 

A+ or better on the Tier list, 750W is fine, I am using a 750W PSU with my system in my sig.

 

 

 

Would also change the MB to one of the AORUS Z390 boards for the 9900K.

 

 

 

 

Also I would change the memory to a 2X 16GB Kit instead of the 4x 8GB kit.

 

And change the SSD to a Samsung 860 EVO instead of the Blue, a 500GB or 250GB SSD for the main drive and 1 TB SSD for the other would be a better setup.

[GoldenLag]

31 minutes ago, Plexez_ said:

Power Supply Corsair - CXM 750 W 80+ Bronze Certified Semi-Modular ATX Power Supply £84.33 @ CCL Computers

Swap for a Bequiet pure power 10/11 600/700 watt.

 

I wouldnt suggest using that PSU.

[seon123]

550-650W is plenty, but the build overall doesn't make sense. Thinking about the CPU cooler, the RAM, motherboard, SSD, and PSU model. 

[Vejnemojnen]

Öööö, as fär as I know, 2080Ti is a hungry beast, can easily consume up to ~250watts with heavy stress. The OC-d 9900k is again above 200w, and then you have the fans&Mobo&drives.. 

 

So it can even require peak wattages roughly round 600w. So, A 750w would be a safety bet. And for those components, something Like Dark Power Pro, Seasonic Pr1me Ultra or Corsair AX series would be my choice.

 

If one has the money to spend on Strix-ROG Z390 mobo& 2080Ti and 9900k, they surely have the funds for a Pr1me Ultra Titanium or Platinum PSU  

[Ankerson]

12 minutes ago, Vejnemojnen said:

Öööö, as fär as I know, 2080Ti is a hungry beast, can easily consume up to ~250watts with heavy stress. The OC-d 9900k is again above 200w, and then you have the fans&Mobo&drives.. 

 

 

 

More like 350W+ for a 2080Ti easily.

[aezakmi]

>dude is rich

>picks a bronze PSU, a low end ssd and a RMAken cooler

>topkek

 

now for real, tell this friend of yours his build is crap, I can tell he prefer looks over performance... uh well some people never change

 

Anyway, either replace the AIO for a different one or get a high end air cooler, NZXT has a high pump failure rate, case doesn't even seems compatible with a front mounted AIO in the first place so I'd replace it as well since its air intake must be horrible with all that plastic

SSD get a MX500 or a 600P

 

And PSU, a gold/plat 650W should be more than enough and perform way better with that config

[ch3w2oy]

1 hour ago, Vejnemojnen said:

 

If one has the money to spend on Strix-ROG Z390 mobo& 2080Ti and 9900k, they surely have the funds for a Pr1me Ultra Titanium or Platinum PSU  

This. If money is no concern the Prime Ultra Titanium is the one to get. Just bought the 1000w one myself as it's one of the quietest units out there with a LAMBDA-A++ rating on Cybenetics. Plus all the Prime Ultra Titanium units can do at least 150 watts over what they are rated for.

 

There's no reason to go and get the 1000w unit, though, I'm just an idiot. The 650w (can do over 800w) Titanium can handle any single GPU system with ease and is also super quiet..

 

The Platinum units are great as well and should be relatively quiet. Cables aren't as nice, though.. I just wasn't fucking around or taking any chances, I want complete and utter silence. I heard the Prime Ultra Gold units can be loud so I would skip those for either Platinum or Titanium. 

 

Any quality unit will do, though. You don't need Titanium at all, both Corsair and Be Quiet have great Gold rated power supplies that will suffice.. I personally wouldn't get Gold from Seasonic. The 2018 RM850x has pretty good reviews and for $119 that is a solid choice, honestly.. 

[Spotty]

2 minutes ago, ch3w2oy said:

Plus all the Prime Ultra Titanium units can do at least 150 watts over what they are rated for.

?? OPP on the prime Ultra titanium units is set to 140%. Your 1000w unit won't shut down until it's doing 1400w (or another protection kicks in first).

Cybernetics tests all PSUs at up to 110% load. PSUs don't just switch off once they hit their rated wattage. They'll keep working until the protections trip, albeit they will run at lower efficiencies, run hotter, they might go out of spec for ripple, voltage might drop, etc...

 

Also if you bought it for that reason thinking your system will consume 1150w, you should have just bought a higher wattage model in the first place. I really fail to see how it's a selling point.

[ch3w2oy]

6 minutes ago, Spotty said:

?? OPP on the prime Ultra titanium units is set to 140%. Your 1000w unit won't shut down until it's doing 1400w (or another protection kicks in first).

Cybernetics tests all PSUs at up to 110% load. PSUs don't just switch off once they hit their rated wattage. They'll keep working until the protections trip, albeit they will run at lower efficiencies, run hotter, they might go out of spec for ripple, voltage might drop, etc...

 

Also if you bought it for that reason thinking your system will consume 1150w, you should have just bought a higher wattage model in the first place. I really fail to see how it's a selling point.

Not a selling point. Just stated a few things I read online. And I know my unit can do over 1300w, that's not why I bought it. I only mentioned 150w because I mentioned all of the titanium units. The smallest of them being the 650w was able to do 844w according to Kitguru so I just went with 150w to be safe. They got the 1000w unit over 1300w, yes.

 

I bought the 1000w because I want quietness, it was the most efficient in most loads (compared to other titanium units) and because I may add another GPU later. Mostly just because I can, though.. Don't really care about price to performance, honestly.. I also only paid $213 for it, so there that too.. 

[seon123]

25 minutes ago, ch3w2oy said:

If money is no concern the Prime Ultra Titanium is the one to get

I mean, they did skimp on the protections on it, though. It lacks multi rail, which is fine on lower wattage PSUs, but they did it on all of the Primes. I think there was also some complaints about motor noise on the Hong Hua fan they use.

Besides, AX1600i >> anything else, if the price actually doesn't matter

[Spotty]

@Ankerson you have a 9900k + 2080ti like OP? Do you have a wall power meter you can hook up to see what it's pulling from the wall (AC) under load? Might help put OPs mind at ease for how much wattage is required for such a system.

 

If they can afford a 2080ti and 9900k they can afford a better PSU than the CXm. Prime Ultra titanium as mentioned is a decent choice, though I'd personally go with the new Corsair AX instead (from what I've seen its $20 cheaper than the Seasonic in US). 

Straight power 11 or dark power Pro from be quiet would also be good choices.

As would the Corsair HX platinum units.

 

@ch3w2oy ah, all good... I think I read it as "I bought the Seasonic Ultra prime titanium 1000w because it can do 150w over its rated wattage" and I was full of questions.

 

[Ankerson]

7 minutes ago, Spotty said:

@Ankerson you have a 9900k + 2080ti like OP? Do you have a wall power meter you can hook up to see what it's pulling from the wall (AC) under load? Might help put OPs mind at ease for how much wattage is required for such a system.

 

 

 

 

Those things are a joke, not really accurate and don't show peak power draw or spikes.

 

There are better meters available and they are NOT cheap, but people aren't buying those, they get the cheap ones and think they are doing something. Which in itself is the biggest joke going these days.

 

I am not going to get something that I don't need or want.

[ch3w2oy]

3 minutes ago, seon123 said:

I mean, they did skimp on the protections on it, though. It lacks multi rail, which is fine on lower wattage PSUs, but they did it on all of the Primes. I think there was also some complaints about motor noise on the Hong Hua fan they use.

Besides, AX1600i >> anything else, if the price actually doesn't matter

I read  the fan is garbage as well.. I don't expect to use it too much, though. The AX1600i is definitely top notch. Corsairs new AX850/1000 is based off the Prime Ultra Titanium too, I just didn't like their cables otherwise I would have went that route as I love Corsair. Guarantee they have a way better fan in them too. I can't stand those capacitors in the cables, though.. 

 

7 minutes ago, Spotty said:

@Ankerson

@ch3w2oy ah, all good... I think I read it as "I bought the Seasonic Ultra prime titanium 1000w because it can do 150w over its rated wattage" and I was full of questions.

 

Ahh okay. Lol I would never do that. I went with 1000w to leave plenty of headroom. 

[seon123]

9 minutes ago, ch3w2oy said:

they have a way better fan in them too

Same Hong Hua fan, according to Cybenetics. 

https://www.cybenetics.com/index.php?option=database&manfID=28&volts=1

[Guest]

If he's "rich", why get the cheapest Corsair PSU?  Does he drive a Ferrari with Cheng Shin tires on it too?  Live in a mansion with a thatch roof? 

 

FFS..... 

[ch3w2oy]

Just now, seon123 said:

Same Hong Hua fan, according to Cybenetics. 

https://www.cybenetics.com/index.php?option=database&manfID=28&volts=1

Oops.. I thought they liked to use their own fans? That's dumb.. Fan shouldn't really spin much anyway.. I think KitGuru said the Platinum units didn't spin up until the last 200 watts were needed. So these should be fine unless you're pushing them to their limits.. 

 

Is it possible to change fans out on these? I wouldn't mind doing that if it came down to it.. 

[Guest]

30 minutes ago, ch3w2oy said:

Not a selling point. Just stated a few things I read online. And I know my unit can do over 1300w, that's not why I bought it. I only mentioned 150w because I mentioned all of the titanium units. The smallest of them being the 650w was able to do 844w according to Kitguru so I just went with 150w to be safe. They got the 1000w unit over 1300w, yes.

You should not restate things you've read online if you do not fully understand them. 

 

Any decent PSU will easily do 10 to 15% over their rating and have an OPP set to at lesst 125%.

[Stefan Payne]

4 minutes ago, jonnyGURU said:

Any decent PSU will easily do 10 to 15% over their rating and have an OPP set to at lesst 125%.

So the RM650i is not decent because OPP is set to around 119%??

[ch3w2oy]

1 minute ago, jonnyGURU said:

You should not restate things you've read online if you do not fully understand them. 

 

Any decent PSU will easily do 10 to 15% over their rating and have an OPP set to at lesst 125%.

I pretty much only stated that the titanium units can do more than what they are rated for. Not sure what you're on about. 

 

Thanks for advice, though! 

[Guest]

16 minutes ago, Stefan Payne said:

So the RM650i is not decent because OPP is set to around 119%??

 

I'll have to double check the PRD, but it could be more like 120%+, but different mains voltages result in different behavior. 

 

I know that Corsair keeps OPP low.  This came up recently with 2080s and Vega 64s tripping OPP during benchmarks.  Hard decision was made to keep it low for long term longevity.  But the flip side are customers (and some reviewers) that think an OPP set too high is a good thing. 

 

What I mean as opposed to cheap PSUs that are advertised at peak and can't even do 100% load.