Will a 150W Power Supply be enough?

[iBloodLust]

I have a HD 7750, and I plan to move it into an Antec ISK 310-150 case with the 150W power supply.

I am planning on using an i3 6100T, 500GB 2.5" HDD 7200RPM , 250GB 2.5" HDD 5400RPM, 2 x 4 8GB DDR4-2133 Ram, and the HD 7750 SFF as mentioned above.

I am not sure if it will be enough to keep the system on atleast 6-12 hours a day for multimedia, and gaming at 1600x900(Dolphin Emulator, PCSX2, PPSSPP, League of Legends, Metro Redux Bundle, BL2, more games..).

My other option I found so far is an In Win BM639 with a 160W power supply

 

[rgMekanic]

I have a HD 7750, and I plan to move it into an Antec ISK 310-150 case with the 150W power supply.

I am planning on using an i3 6100T, 500GB 2.5" HDD 7200RPM , 250GB 2.5" HDD 5400RPM, 2 x 4 8GB DDR4-2133 Ram, and the HD 7750 SFF as mentioned above.

I am not sure if it will be enough to keep the system on atleast 6-12 hours a day for multimedia, and gaming at 1600x900(Dolphin Emulator, PCSX2, PPSSPP, League of Legends, Metro Redux Bundle, BL2, more games..).

My other option I found so far is an In Win BM639 with a 160W power supply

300w minimum to run a 7750 per the specs.

 

[Jorona]

A 7750 uses about 60w. It will be tight. I'd monitor voltages at full load to make sure you're not experiencing high droop.

 

[Emission]

95W between the CPU and GPU. Assuming everything else doesn't use more than around 30W, it should be doable. All of the components won't be fully loaded all the time anyway.

 

[Dreamerbydesign]

Not enough power. I wouldn't even try less than 300W.

 

[CaptNumbNutz]

300w minimum to run a 7750 per the specs.

Not enough power. I wouldn't even try less than 300W.

Those quotes on the manufacturer websites are for people running cheap power supplies and/or low specc'ed OEM machines from Dell, HP, Lenovo, etc. This is especially true of cheap or older power supplies that put way too much power on 3.3v and 5v rails rather than 12v. If you know the exact amperage for each of the various voltage rails on a PSU, odds are very likely you don't need to know the total wattage.

 

[rgMekanic]

Those quotes on the manufacturer websites are for people running cheap power supplies and/or low specc'ed OEM machines from Dell, HP, Lenovo, etc. This is especially true of cheap or older units that put way too much power on 3.3v and 5v rails rather than 12v. If you know the exact amperage for each of the various voltage rails on a PSU, odds are very likely you don't need to know the total wattage.

I seriously doubt a 150w PSU shoehorned into a $75 SFF mini ITX case is that great.. http://www.newegg.com/Product/Product.aspx?Item=N82E16811129081

 

[Bandalo]

Those quotes on the manufacturer websites are for people running cheap power supplies and/or low specc'ed OEM machines from Dell, HP, Lenovo, etc. This is especially true of cheap or older units that put way too much power on 3.3v and 5v rails rather than 12v. If you know the exact amperage for each of the various voltage rails on a PSU, odds are very likely you don't need to know the total wattage.

The quotes on the manufacturer's webpage covers the worst possible operating conditions and manufacturing tolerances and variance for the product itself, not for a particular OEM or power supply.

They're covering their butts on the "recommended" power supply to cover the huge range of power supplies out there and their ratings. A 150W SFF style supply is probably not going to be the best choice for a relatively high-powered small card like that though. If it was a little bit under the rating, you'd be fine IMO, but going with half the recommended rating is asking for trouble (and/or fire).

 

[Emission]

The PSU in question is an Antec FP-150-8. According to this document, it will do 10A max on the 12V rail: http://www.antec.com/pdf/manuals/ISK 310-150_Manual_EN.pdf

So 120W worth of 12V supply. I admit that's pushing it at full load scenarios (you don't want to exceed 80% of capacity on the PSU for day to day use, it won't live long).

So if the question is "can it power the system?" then the answer is yes. If the question is "can it power the system reliably?" or "for how long can it power the system?" then I'm not so sure. Usage under gaming fluctuates and isn't 100% for the whole time, but you also have to take operating temps into consideration. If the PSU gets a good supply of cool air during this operation then it should be okay, but it's life will rapidly shorten if it runs in a hot environment, which is likely in a cramped case with poor ventilation.

 

[CaptNumbNutz]

I seriously doubt a 150w PSU shoehorned into a $75 SFF mini ITX case is that great.. http://www.newegg.com/Product/Product.aspx?Item=N82E16811129081

I've seen people pull it off with the Pico PSU's that only put out 150w. The PSU that's provided is built by Antec, and they have built PSU's for decades.

FWIW, here's a completed build using an A10-7700K cpu which is a 95w part. OP is using a 6100T which is a 35w part + an AMD 7750 which is a 60w part = 95w. The CPU's and GPU's all pull power off the 12v rail, so OP's setup versus the A10 apu is functionally similar. He definitely won't want to overclock the video card.

He will be cutting it close with 2 HDD's which he may want to move to a single large HDD or preferably SSD at some point to save power. Fortunately, those 2.5" drives pull power from 5v rail which will have some head room. I believe his next biggest issue will be the GPU's heat and he may want to add some additional fans.

As someone said before, it is possible... but he will be running near 80-90% of the PSU's 12v rail which likely won't be very healthy for the PSU. The extra heat from the video card will also contribute to heat in the case itself. I too would be concerned about longevity.

The quotes on the manufacturer's webpage covers the worst possible operating conditions and manufacturing tolerances and variance for the product itself, not for a particular OEM or power supply.

They're covering their butts on the "recommended" power supply to cover the huge range of power supplies out there and their ratings.

That's basically what I was trying to say. Thank you for wording it better. Also, "worst possible conditions" should cover the crap PSU's I was mentioning.

 

[iBloodLust]

so i saw a 160W Pico PSU Power Supply, and it peaks at 15A on the 12V rail. The most i will be using is about 12A. will this be okay?

http://resources.mini-box.com/online/PWR-PICOPSU-160-XT/PWR-PICOPSU-160-XT-manual.pdf

 

[CaptNumbNutz]

so i saw a 160W Pico PSU Power Supply, and it peaks at 15A on the 12V rail. The most i will be using is about 12A. will this be okay?

http://resources.mini-box.com/online/PWR-PICOPSU-160-XT/PWR-PICOPSU-160-XT-manual.pdf

It would be better with some additional overhead. Take note that the Pico PSU itself is simply a DC-DC converter and the actual power supply is a power brick that resides outside the case. This brings with it some pros and cons.

Pros
-You can remove the Antec PSU which will free up a bunch of space inside the case.
-The actual AC adapter brick is 192w which will sit outside the case and provide more than enough power.

Cons
-You will have to find or make a hole in the case for the plug the power brick plugs into.
-The kit itself is $80 which is about the price of a new case. I hope you have your heart set on that Antec case and that particular parts loadout.
-You will also lose the exhaust fan that was installed on the Antec PSU, so be prepared to install fans of your own.
-The Pico PSU plugs directly into the ATX 24pin plug, and does so vertically. It maybe a very tight fit in that particular case with the wires coming out the top of it.