Semi passive PSU, however...

[Glo.]

Im looking for Semi-Passive PSU that stays in passive mode while the load is not higher than 120-140W of power. Also it is required for it to be at least - semi modular, or fully modular.

Any suggestions?

 

[Lordhumungus]

What overall wattage do you need?

There are these, but not sure if that fits your needs:

https://www.newegg.com/Product/Product.aspx?Item=N82E16817151097

 

[BSim500]

Im looking for Semi-Passive PSU that stays in passive mode while the load is not higher than 120-140W of power. Also it is required for it to be at least - semi modular, or fully modular. Any suggestions?

Corsair RM550X has quite a high fan threshold (see chart at the bottom):-
http://www.tomshardware.com/reviews/corsair-rm550x-power-supply,4484-5.html

Depends on how you install them though. In my experience, semi-passive's will run in passive mode longer if they're facing up (and heat is allowed to passively vent out the fan intake) rather than facing down and trapping heat. Cases with bottom-mounted PSU's + PSU shrouds can actually act as a heat trap with passive / semi-passive PSU's.

 

[Glo.]

Corsair RM550X has quite a high fan threshold (see chart at the bottom):-
http://www.tomshardware.com/reviews/corsair-rm550x-power-supply,4484-5.html

Depends on how you install them though. In my experience, semi-passive's will run in passive mode longer if they're facing up (and heat is allowed to passively vent out the fan intake) rather than facing down and trapping heat. Cases with bottom-mounted PSU's + PSU shrouds can actually act as a heat trap with passive / semi-passive PSU's.

Thanks, that is exatly what I was looking for.

The thing is that I have Raijintek Metis Plus case, and it has bottom mounted PSU, however, the PSu is mounted vertically, not horizontally. So I still think it will work. We are looking at 120-140W load, with 35W TDP CPU, and 60-65W TDP GPU.

 

[BSim500]

Thanks, that is exatly what I was looking for.

The thing is that I have Raijintek Metis Plus case, and it has bottom mounted PSU, however, the PSu is mounted vertically, not horizontally. So I still think it will work. We are looking at 120-140W load, with 35W TDP CPU, and 60-65W TDP GPU.

Is that the one that stands on end like this? Should probably be OK at those wattages. Not having it vent out passively may mean the 250w semi-passive trigger gets reduced to say 150w but that should still fit within your requirements. If the intake backs onto a CPU fan's intake (as shown in linked pic) you shouldn't have any problems as it may create a slight draught pulled up through the bottom of the case when the fan is off.

Have you actually measured the wattages though (with a Kill-A-Watt), or merely used an online calculator? Reason I ask is in my 2nd (ITX) rig I have an i5-7500 ("65w") + 1050Ti ("65-75w" GPU). If I enter all the specs I get "estimates" of anything between 150-250w. In reality, if I were to force it with IntelBurnTest + Furmark, it might peak at 120w but for most real-world games it draws only 95w in the heaviest games (and 30-80w in lighter ones). These actually measured at the wall figures are far less than what some hilariously out of whack calculators "suggest" and I'd be surprised if something like an i3-6100T + GTX 1050 (just an example of 35w CPU + 65w GPU) even exceeded 100w.

Another tip - If your motherboard allows undervolting, you can probably knock another 5-10w off the CPU and about the same with GPU.

 

[Glo.]

Is that the one that stands on end like this? Should probably be OK at those wattages. Not having it vent out passively may mean the 250w semi-passive trigger gets reduced to say 150w but that should still fit within your requirements. If the intake backs onto a CPU fan's intake (as shown in linked pic) you shouldn't have any problems as it may create a slight draught pulled up through the bottom of the case when the fan is off.

Have you actually measured the wattages though (with a Kill-A-Watt), or merely used an online calculator? Reason I ask is in my 2nd (ITX) rig I have an i5-7500 ("65w") + 1050Ti ("65-75w" GPU). If I enter all the specs I get "estimates" of anything between 150-250w. In reality, if I were to force it with IntelBurnTest + Furmark, it might peak at 120w but for most real-world games it draws only 95w in the heaviest games (and 30-80w in lighter ones). These actually measured at the wall figures are far less than what some hilariously out of whack calculators "suggest" and I'd be surprised if something like an i3-6100T + GTX 1050 (just an example of 35w CPU + 65w GPU) even exceeded 100w.

Another tip - If your motherboard allows undervolting, you can probably knock another 5-10w off the CPU and about the same with GPU.

Its exactly What I was calculating, absolutely worst case scenario for those components, not real world usage: gaming with Overwatch, Heroes of the Storm and Hearthstone.

I am currently planning a build, that was supposed to be completely passive, and Small form factor, for my friend, and I have written about his request in this thread: http://www.portvapes.co.uk/?id=Latest-exam-1Z0-876-Dumps&exid=threads/fanless-colling-for-the-cpu.2527011/

Yes, the topic is still molding itself. RM550X is around 30$ cheaper in my country than Seasonic X-400FL2 PSU, that has been mentioned in this thread. I can get RM550X for 369 PLN, and Seasonic cheapest offer is 505 PLN. That is quite large difference, that we can put into something else.

 

[Charlie22911]

If you want some more options you could check out the EVGA Supernova line as well. I have the 1000w, 1200w, and 1600w versions and every single one is semi passive. Even when the fan is active it is only at a percentage of its full speed so it is still effectively silent, the coil whine in my 1080tis are far louder in comparison.

https://www.newegg.com/Product/Product.aspx?Item=N82E16817438053&ignorebbr=1

 

[lehtv]

You could also consider quiet but not semi passive PSU's. I have EVGA 650GQ in my current build, it is not semi passive but case fans on low RPM still make more noise. Semi passive seems overrated for PSU's because they use large fans that are pleasant and quiet at low RPM. Semi passive operation is more useful for graphics cards which use smaller fans that have annoying pitch even when running at low RPM.