- Joined
- Jan 9, 2013
I have 2 Delta's I bought for budget built Office machines that specifically require 500+W and an 80mm rear fan. I bought a Delta DPS-700-FB 1 and a Delta DPS-600-MB A
Both are BRICKS of psu's and are amazing, huge power output, nice cables, nice quality, very stable output, little ripple, and fans aren't even loud.
But then i dared to go into S3 sleep.... the computers 50% of the time will fall flat on their faces and fail to come out of S3 sleep, either just starting in the bios OR fans going to full speed and the management chip resets the system. Both computers have the same issue, tried both powersupplies in my main desktop and the same thing happens
Looking at the design of these PSU's i fail to understand how this could happen, S3 sleep involves storing data in RAM, which remains powered by the 5VSB rail, which should NEVER turn on, if it did, then the sleep LED should go out along with the 5VSB lights on the mainboard, however instead the system appears to lose or corrupt memory anyways. Putting a lower wattage PSU in the computers results in things working unless I put it under load which then it shuts off...
What could cause this and How can I remedy it? Is it the PG signal somehow or the 5VSB, PG reads 300-340MS each time. I'm about to try a 5000 farad capacitor across the 5VSB to ground and see if it maybe dips a little right before it shuts off, maybe that will help(should hookup a scope)
Both are BRICKS of psu's and are amazing, huge power output, nice cables, nice quality, very stable output, little ripple, and fans aren't even loud.
But then i dared to go into S3 sleep.... the computers 50% of the time will fall flat on their faces and fail to come out of S3 sleep, either just starting in the bios OR fans going to full speed and the management chip resets the system. Both computers have the same issue, tried both powersupplies in my main desktop and the same thing happens
Looking at the design of these PSU's i fail to understand how this could happen, S3 sleep involves storing data in RAM, which remains powered by the 5VSB rail, which should NEVER turn on, if it did, then the sleep LED should go out along with the 5VSB lights on the mainboard, however instead the system appears to lose or corrupt memory anyways. Putting a lower wattage PSU in the computers results in things working unless I put it under load which then it shuts off...
What could cause this and How can I remedy it? Is it the PG signal somehow or the 5VSB, PG reads 300-340MS each time. I'm about to try a 5000 farad capacitor across the 5VSB to ground and see if it maybe dips a little right before it shuts off, maybe that will help(should hookup a scope)