[SOLVED] Please recommend power supply capacity

[Imacflier]

Good, Evening, All,

For an ITX build, I do not know how large a PSU I should buy.

Specs:

Custom loop for CPU and for GPU.

CPU overclocked to at least 4.8 GHz....possibly higher. GPU overclocking to be determined.

MB: Gigabyte Z97N-WIFI

CPU: I7-4790K (already stably overclocks to 4.8 GHz with a vcore of 1.25

GPU: Gigabyte GTX 1070 Mini

PSU: TBD...case will accept full size ATX supply, but I would prefer an SFX supply...MUST be fully modular

OS & Pgm Storage: Samsung 500 GB SATA @ 2, in Raid 1

Data Storage: 1 TB Sata SSD

Cooling: Swiftech Apogee Drive II https://www.amazon.com/s?k=swiftech+apogee+drive+ii&crid=U8YGQ4PCKUPN&sprefix=swiftech+ap%2Caps%2C135&ref=nb_sb_ss_c_1_11

Radiators: Phobya Extreme V.2 @ 2 https://www.amazon.com/Phobya-Xtreme-200-Radiator-v2/dp/B00414RR3O/ref=sr_1_4?crid=2CPEWC7SXMSTY&keywords=phobya+radiator&qid=1547862821&sprefix=phobya+%2Caps%2C134&sr=8-4

Radiator Fans: Spectre Pro 200mm @2
https://www.amazon.com/BitFenix-BFF-SPRO-20025KK-RP-Cooling-200mm-Case/dp/B008UYZ102/ref=sr_1_fkmr1_1?keywords=spector%2Bpro%2Bfan%2B200mm&qid=1547863210&sr=8-1-fkmr1&th=1

All crammed into a Thermaltake V1 Snow Edition Case: https://www.amazon.com/Thermaltake-Core-Computer-Chassis-CA-1B8-00S6WN-01/dp/B015UDUAKG/ref=sr_1_fkmrnull_1?keywords=thermaltake+v1+snow&qid=1547863349&sr=8-1-fkmrnull

So, definitely a packaging challenge...but how big a PSU do I need? Can I get away with 600 watts or must I have more....how much more?

Please give your recommendations.

TIA,

Larry

 

[kasol kay]

For ITX builds people tend to want Non-Modular Power-Supplies since oddly enough they take less up less space overall.

The only thing I'm not sure of is how much power a Pump Requires but I would say a 550W Power-Supply should be comfortably adequate.

I would go for a higher quality Power-Supply, Gold rated or higher as that will make the biggest difference in terms of reliability.
The reasoning being higher efficiency Power-Supply's use higher quality components to reach that level of efficiency.

If a Power-Supply is not at least 80% Plus Efficiency rated I would not even consider it.

You can absolutely not go wrong with a brand called Seasonic, this is one is Semi-Modular which means only the 8 pin and 24 pin are not modular:

https://www.newegg.com/global/il-en/Product/Product.aspx?Item=N82E16817151203

Hope this helped

 

[g-unit1111]

For ITX builds people tend to want Non-Modular Power-Supplies since oddly enough they take less up less space overall.

Well depends on if a case will accept a full size PSU or not. Cases like the Thermaltake mentioned do accept full size units, so that would benefit. But then you're left with cables you won't use. I use an SFX PSU in mine because my ITX case is a lot smaller, so having the modularity helps there.

The only thing I'm not sure of is how much power a Pump Requires but I would say a 550W Power-Supply should be comfortably adequate.

It's actually the radiator that uses more power, but I'm not sure that you could fit a full size liquid cooler into a case that small. It might be safer and more efficient to run on an air cooler in this scenario.

I would go for a higher quality Power-Supply, Gold rated or higher as that will make the biggest difference in terms of reliability.
The reasoning being higher efficiency Power-Supply's use higher quality components to reach that level of efficiency.

If a Power-Supply is not at least 80% Plus Efficiency rated I would not even consider it.

That's actually the worst reason to consider a PSU. I've seen some absolute junkers that have Gold, Platinum, and Titanium ratings. When choosing a PSU you should be more focused on the quality of the construction of the unit, not the efficiency rating. I do agree about Seasonic though, one of my rigs uses a Seasonic X and it has held up very well the last couple of years.

 

[kasol kay]

Fair enough, that's actually a good point.

I would say that if you can afford Seasonic that is probably your best bet and this particular model comes with a 7 year warranty.

 

[g-unit1111]

Fair enough, that's actually a good point.

I would say that if you can afford Seasonic that is probably your best bet and this particular model comes with a 7 year warranty.

Yeah exactly, if you see a unit that's 80+ Gold rated and it's $50 that should be a red flag. The thing about PSUs is that is one component where you really do get what you pay for. And there's so much junk out there that you have to watch out and be careful what you spend your money on.

 

[Karadjgne]

With ITX, you have to be careful of dimensions. Even with a normal full size ATX psu there's differences in depth, some are small at 140mm and some can reach 170mm. There's many ITX cases that say full size ATX, but that realistically means choose a 140mm psu or you'll find the cables will be obstructed, and this is where non modular is actually a benefit as the cables will bend much closer to the unit, vrs most modular cables which stick out a little further before bending. Even SFX psus can be an issue unless the adapter plate is flat, some plates are recessed which pushes the psu further into the case, negating any benefits from the smaller unit.

Power Supply: SeaSonic - FOCUS Gold 550 W 80+ Gold Certified Semi-Modular ATX Power Supply ($59.99 @ Newegg)
Power Supply: Corsair - CXM 550 W 80+ Bronze Certified Semi-Modular ATX Power Supply ($39.99 @ Newegg after $20 mail-in rebate)

The Seasonic is 140mm. Currently newegg also has the Corsair RMx 550w for $59.99, however that's also a 160mm deep unit as it uses a 140mm fan vrs the Seasonic 120mm fan.