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Not too loud
Cons: Active PFC fried operating off of "Modified Sine Wave" UPS
Other Thoughts: PSU did not fry when computer was asleep during power interruption/UPS switchover. However, with computer running under load, loss of AC power / switchover to UPS caused PSU to FRY (smoke was emitted).
Am switching both PSU (gotta get a new one, anyway) and UPS (to "pure sine wave")
This review is from: CyberPower Intelligent LCD Series CP1500AVRLCD 1500VA 900W 8 Outlets UPS
Pros: Cheapish for a "Modified" Sine Wave PFC
Cons: Rolling the dice when using with Active PFC PSU
Other Thoughts: Do you feel lucky, punk?
My Seasonic M12 II 650W Evo Edition, which I got on sale here at New Egg, wasn't. As long as the computer was sleeping, power (to the UPS) could be lost/regained, and nothing fried. But, the first time the UPS lost power while computer was actually running: instadeath. My other Cyberpower UPS, which does have true sine wave, did NOT kill its associated computer's PSU.
Awaiting a new PSU to survey damage (hope nothing else fried).
Need a warning sticker on these "Modified" Sine Wave PSUs: NOT for use with Computers
(although I wouldn't trust it with my TiVo, either)
Fastish (for a hybrid card)
Cons: Lies about individual drives' SMART data (doesn't show "real" numbers)
Slow rebuilds / drive checks
Issue with AMD booting (ASROCK mobo with Phenom II x4 - issue was "fixed" when upgraded CPU to FX-8350)
Just found BIG issue trying to RAID 5 with three 4TB HDs - created array, tested, discovered write speeds of only 40MBps! - rebuilt as RAID0 with same drives, write speed jumped to 450 MBps. Workaround- set back to RAID5, but manually set the size down from default (max size) to 7950 GB - for some reason, this worked, and now get expected write speed of 320 MBps. (Read speed was always good)
Other Thoughts: Would like to see new firmware that fixes the SMART issue, but am not holding my breath.READ FULL REVIEW