Corsair RM750 fan not spinning

[Pedge]

I know that the fan is not meant to spin until 40% load, but I became uneasy when I was running BF4 on Ultra settings at >60fps yet it was still not spinning.
So I have tried running Prime95 and Furmark at the same time, only for 15 minutes mind.
CPU was running at around 80-85% reaching temps of 98 Celcius.
I don't know how much GPU usage I had, should have checked but it was running at 70 Celcius.
Furmark was 1080p 32x MSAA, Post FX, Stability Test.

Does this sound like a faulty PSU?

This is the system I was using:
CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor (w/ Stock Cooler)
Motherboard: Asus Maximus VI Hero ATX LGA1150 Motherboard
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory
Storage: Samsung 840 EVO 120GB 2.5" Solid State Disk
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive
Video Card: Asus GeForce GTX 770 2GB Video Card
Case: Corsair 300R ATX Mid Tower Case
Power Supply: Corsair RM 750W 80+ Gold Certified Fully-Modular ATX Power Supply
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer

 

[rolli59]

Well running stress test on your rig should be around 400watts from the wall so really close to 40% load. 383watts here so hard to tell if you actually are reaching 40% load http://anandtech.com/show/6994/nvidia-geforce-gtx-770-review/16

 

[Pedge]

Well running stress test on your rig should be around 400watts from the wall so really close to 40% load. 383watts here so hard to tell if you actually are reaching 40% load http://anandtech.com/show/6994/nvidia-geforce-gtx-770-review/16

Shouldn't 40% load be 300watts for a 750w PSU? In which case I'd be over.

 

[rolli59]

383 from the wall at 90% efficiency is close to 350watts which could be with in margin of error but for all means contact Corsair support and find out what they say about the issue.

 

[VolvoDoto]

Why it is not spinning

http://www.hardocp.com/article/2013/11/13/corsair_rm750_750w_power_supply_review/9#.UtVQNfQW1x0

As long as you dont experience random shutdowns it is good.

 

[Pedge]

I appreciate the quick responses guys.
I contacted Corsair the other day, still awaiting a reply, so I thought I would get an outside opinion.

@VolvoDoto the PSU is running fine, all components are working & it can withstand my GPU/CPU stressing. That review says sometimes it did not spin up until 50% load, which may be why mine is not. Just wish I had a second 770 or a system in which I could test my particular one.

I'll continue to use it & see what Corsair say

 

[faxfan]

There appears to be a recall on RM750 and RM850 PSU's with a serial number begining 1341 and lower (13 being the year, 41 the week). Source -

http://www.reddit.com/r/buildapc/comments/1wt3i6/recall_on_rm750_and_rm850_spread_the_word_details/


I've had no spinning up the fan and random shutdowns, requested a RMA on it.