Seasonic S12 500W

[jeffreyhsieh99]

For those having this unit, can you feel any air outflow outside it's Honey Comb vent? I can feel nothing at all not sure if it's because my 120mm chassis fan is sucking out all the air instead. I do see the fan blade rotate just fine. Not sure if it's a defective unit.

 

[DaveUK]

The Seasonic S12 series is widely regarded as the quietest consumer-grade PSU on the market. I presume thats why you bought one?

I would generally assume that this means the fan is a low RPM model and as such probably has a relatively low CFM rating.

If you can see the fan rotating fine, I can't see how it would be an issue. Try disconnecting the case fan, and put some thin (eg tissue) paper over the PSU fan vent. Does the paper move? This should give you a good indication of whether its moving air or not.

Many PSU's (particularly the quietest ones) only ramp up the fan speed to a significant level when they reach a particular temperature threshold (which may never happen in your case). I'm not sure if this applies to the S12 but it wouldn't surprise me.

If the blades are spinning and there is literally *no* expelled airflow then this would be a symptom of having a fan the 'wrong way round' (eg sucking). However I've never heard of a PSU being shipped like this lol, certainly not a respected brand.

 

[paybax]

NO air comes out from the back of the honeycombs....there is a 120cm fan on top that sucks the air out. The honeycombs are meant to PROMOTE the airflow around the interior componants. I have the S12 600 and I love it !!!

Antec P180 PerformanceSeries
SeaSonic S12 600 PSU
Asus A8N32 SLI X-16 S-939 (bios 1103 V02.58 )
RealTek 97 Onboard
AMD 64 X2 4800+ Toledo Core (AMD v 1.3.1.0/MS hotfix/ Dual Optimizer)
2 gigs Corsair 3500LL Pro @ 437Mhz 2-3-2-6-1T
2- BFG 7900 GT OC in SLI (NV 91.31)
WD RAPTOR 74.3 gig HDD / XP & Apps
Maxtor SATA II 250 Gig /Gaming / Movies / MP3's
Maxtor SATA II 250 Gig /backup (unplugged)
Sony CDrom 52X
Plextor 708-A DVD/CD rom
Razer DiamondBack Optical mouse
Logitech Z-5500 Dolby Digital 5.1 THX 500watts

 

[brer_squid]

Here's a little something to do for emotional reassurance:

Take a piece of tissue paper and cover the honeycomb on the back and then try the same thing with the fan grill. You will see suction on the fan grill and blowing out the back (although these will both be small when the PSU is lightly loaded.)