Reviews - Bitfenix Whisper M 750W
Sample Provided by: Bitfenix (By OklahomaWolf on Mon, Jan-23-2017)

Page 2 - Cables and Specs

Moving on to the unit itself, we find a rather tasteful looking unit.

Whisper? No power supply tells me what to do. I just yelled at my phone. See what you made me do, Bitfenix? No, wait, I can't put that on you, the phone is an LG. It was made to be yelled at.

The exhaust grille gives few clues as to who the OEM is. While it looked vaguely FSP like, CWT is the actual OEM for this unit. Channel Well and I go way back... I bought one of their units before I was even working for this site.

The modular cable panel. You can plug the CPU cables into the VGA sockets, and that would normally be a scoring deduction save for the fact that in this case they are all electrically compatible. So, no worries there.

Rail assignments? Peripherals and mobo cables are on 12V1. CPU on 12V2. VGA1 on 12V3. VGA2 on 12V4. Easy to remember, like Ice MC's career. Please tell me I'm not the only one who remembers Ice MC.

A wire grille helps cut down on fan noise, and I am pleased to see Bitfenix put some effort into not making it look like the plain old boring concentric rings style fan grille.


+3.3V +5V +12V1 +12V2 +12V3 +12V4 -12V +5VSB
22A 22A 25A 25A 35A 35A 0.5A 2.5A
Max Power
@ 50C
120W 750W 6W 12.5W

It is time for the load table. As always, the high 12V capacity tells us we have a VRM based design for the minor rails. Pretty common on high end units these days, an evolution of the older indy regulated units that separated all main rails but were not too efficient in doing so.

The ATX cable is a mess on this unit. Not only is it ribboned four ways, but the motherboard side has this big boot on it. No doubt hiding cable capacitors, which I do score on. Bitfenix looks to be doubling down on point deductions later from this one cable alone.

What's really aggravating is the power supply end of this cable. Because of the way the modular connectors are on the unit, you have to pull the two connectors apart and split the ribbons a bit to get this thing to even plug in. A traditionally sleeved cable would be much preferred. Let's pop that boot off the end and check for capacitors.

Yep, there they are. Thankfully, they're high end Japanese polymers. I'm glad Bitfenix made this connector a straight 24 pin one, rather than the modular 20+4... who needs a 20 pin ATX connector anymore, anyway?

CPU cables. Nice to see we have two, though I don't require them at 750 watts. You would have to use the second one on 12V3 or 12V4 - the unit only has one 12V2 connector on it. These cables are 18 AWG, which is plenty for CPUs.

There are two kinds of PCIe cable... single connector and double connector. They, too, are 18 AWG. This is too thin for high power video cards. Fortunately, Bitfenix does have the single connector cables to supply those. I would never run an overclocked 290 or 390 on one of these double PCIe cables unless said cable was 16 AWG.

We have a Molex chain here with no Berg in sight. Just the way I like them. In fact, there's no Berg at all anywhere in the retail packaging. Good. Let those terrible connectors die off.

All three SATA chains look like this, so we'll get a cable table done up and go do some load testing.

Cabling - Bitfenix BWG750M
Type of Cable Length from PSU +12V Rail
Modular Cables

24 pin ATX connector

610mm 12V1
5.25"+5.25"+5.25"+5.25" 500+150+150+150mm
SATA+SATA+SATA+SATA 500+150+150+150mm
SATA+SATA+SATA+SATA 500+150+150+150mm
SATA+SATA+SATA+SATA 500+150+150+150mm
4+4 pin CPU 650mm 12V2/
4+4 pin CPU 650mm
6+2 pin PCI-E 650mm
6+2 pin PCI-E 650mm
6+2 pin PCI-E, 6+2 pin PCI-E 650mm+150mm
6+2 pin PCI-E, 6+2 pin PCI-E 650mm+150mm
Unit Dimensions (L x W x H)
160mm x 150mm x 86mm

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