Is this enough amperage for each rail on my PSU?

[Cam P]

I have a 400W PSU with the following specs:

Here's what I'm powering (nothing overclocked):
i5-6600K
Zotac Mini GTX 1060 6GB
Mini ITX Z170 Motherboard
2TB 2.5" HDD
250GB NVME M.2 SSD
Regular peripherals

I think the 12V rail has enough amps, but do the 3.3V and 5V rails have enough?

 

[Rogue Leader]

Enough? yes.

But what brand is it?

 

[Cam P]

Enough? yes.

But what brand is it?

Solid Gear.
But I'm limited to about 5 power supplies. I need a Flex ATX short power supply, and this is the cheapest at $76, also being 80 plus bronze. The most expensive is a 500W 80 plus platinum from fsp for $130. I'm trying to lower the costs, but here's the list of supplies to choose from:
http://www.tomshardware.com/answers/id-3303549/flex-atx-power-supplies.html

 

[Rogue Leader]

Ok so it "should" be ok. Nothing is guaranteed.

If you find the system crashing and rebooting the FSP is the way to go. I would not touch those Athena Power PSUs with a 10 foot pole.

 

[ko888]

The big complaint about the Solid Gear SDGR-FLXB-400 is how weak the +5V rail is. This is extremely important if you use USB devices since the USB devices get their power from the +5V rail. Even plugging in a USB flash drive may cause the system to crash.

 

[Cam P]

The big complaint about the Solid Gear SDGR-FLXB-400 is how weak the +5V rail is. This is extremely important if you use USB devices since the USB devices get their power from the +5V rail. Even plugging in a USB flash drive may cause the system to crash.

If the max power of a USB 2.0 is 0.5A and 3.0 is 0.9A, then my current mobo could max draw 5.6A, not good.
Hmmm... I might go with FSP 400W 80 Plus Gold because of the low 5V amperage. The problem is the 12V rail only has 18A. If my CPU and GPU were at full load that would only leave 31 watts left on the 12v rail (CPU 65W, GPU 120W). So maybe I'm forced to get a 500W PSU? That other guy said not to touch those Athena Power ones so I guess the expensive FSP 130 is the way to go?

 

[Rogue Leader]

The big complaint about the Solid Gear SDGR-FLXB-400 is how weak the +5V rail is. This is extremely important if you use USB devices since the USB devices get their power from the +5V rail. Even plugging in a USB flash drive may cause the system to crash.

If the max power of a USB 2.0 is 0.5A and 3.0 is 0.9A, then my current mobo could max draw 5.6A, not good.
Hmmm... I might go with FSP 400W 80 Plus Gold because of the low 5V amperage. The problem is the 12V rail only has 18A. If my CPU and GPU were at full load that would only leave 31 watts left on the 12v rail (CPU 65W, GPU 120W). So maybe I'm forced to get a 500W PSU? That other guy said not to touch those Athena Power ones so I guess the expensive FSP 130 is the way to go?

I would 100% agree with you. Better to over buy and need less, especially with PSUs like these that aren't exactly world class quality to begin with.

 

[ko888]

The big complaint about the Solid Gear SDGR-FLXB-400 is how weak the +5V rail is. This is extremely important if you use USB devices since the USB devices get their power from the +5V rail. Even plugging in a USB flash drive may cause the system to crash.

If the max power of a USB 2.0 is 0.5A and 3.0 is 0.9A, then my current mobo could max draw 5.6A, not good.
Hmmm... I might go with FSP 400W 80 Plus Gold because of the low 5V amperage. The problem is the 12V rail only has 18A. If my CPU and GPU were at full load that would only leave 31 watts left on the 12v rail (CPU 65W, GPU 120W). So maybe I'm forced to get a 500W PSU? That other guy said not to touch those Athena Power ones so I guess the expensive FSP 130 is the way to go?

The maximum combined +12 Volt continuous current rating of the two +12 Volt rails on the FSP Group FSP400-60FGGBA should be around 32 Amps and not the 18 Amps that you think it is.

 

[Cam P]

The big complaint about the Solid Gear SDGR-FLXB-400 is how weak the +5V rail is. This is extremely important if you use USB devices since the USB devices get their power from the +5V rail. Even plugging in a USB flash drive may cause the system to crash.

If the max power of a USB 2.0 is 0.5A and 3.0 is 0.9A, then my current mobo could max draw 5.6A, not good.
Hmmm... I might go with FSP 400W 80 Plus Gold because of the low 5V amperage. The problem is the 12V rail only has 18A. If my CPU and GPU were at full load that would only leave 31 watts left on the 12v rail (CPU 65W, GPU 120W). So maybe I'm forced to get a 500W PSU? That other guy said not to touch those Athena Power ones so I guess the expensive FSP 130 is the way to go?

The maximum combined +12 Volt continuous current rating of the two +12 Volt rails on the FSP Group FSP400-60FGGBA should be around 32 Amps and not the 18 Amps that you think it is.

Why 32?

 

[ko888]

The big complaint about the Solid Gear SDGR-FLXB-400 is how weak the +5V rail is. This is extremely important if you use USB devices since the USB devices get their power from the +5V rail. Even plugging in a USB flash drive may cause the system to crash.

If the max power of a USB 2.0 is 0.5A and 3.0 is 0.9A, then my current mobo could max draw 5.6A, not good.
Hmmm... I might go with FSP 400W 80 Plus Gold because of the low 5V amperage. The problem is the 12V rail only has 18A. If my CPU and GPU were at full load that would only leave 31 watts left on the 12v rail (CPU 65W, GPU 120W). So maybe I'm forced to get a 500W PSU? That other guy said not to touch those Athena Power ones so I guess the expensive FSP 130 is the way to go?

The maximum combined +12 Volt continuous current rating of the two +12 Volt rails on the FSP Group FSP400-60FGGBA should be around 32 Amps and not the 18 Amps that you think it is.

Why 32?

The +3.3V and +5V rails are derived from the +12V main power supply since it is a DC-to-DC circuit design. It is possible to draw a maximum of 32 Amps from the combined +12V rails if no power is being drawn from the +3.3V and +5V rails. The OCP (i.e. Over Current Protection) trip point on each of the +12V rails is set at 32 Amps.

If power is also being drawn from the +3.3V and +5V rails then 27 Amps for the combined +12V rails would be a more realistic maximum.