major_foad
n00b
- Joined
- Jun 14, 2004
- Messages
- 41
I built a computer into a small gun case (monitor, keyboard, and all) but I'm having some power problems despite some significant underclocking and other controls of power. This is not entirely unexpected as I'm using a Seasonic SS 250U (250W) to power...
ASRock P67 Extreme6
i7 2600k *undervolted @ 1.05V, 3.3Ghz
8GB (2x4) 1.5V DDR 3
9800GT low power (no 6-pin connector)
hard drive, optical, etc
The system runs fine but after a few hours the PSU heats up a bit, drops in efficiency, and the system BSOD (i suspect due to insufficient power) If I let it cool off for awhile it will run for another 3 hours, if not it goes ~20min. Other components are not heating to an alarming level at all.
Anyway....
I know I can build a PCI-E 6pin power supply out of a 12V 5A external adapter (like for a monitor) and solder on the appropriate connector...
What I don't know is if I can do the same for the motherboard's 8-pin EPS12V connector. My understanding is that electrically the 8-pin connector is allowed to be supplied from 2 separate 12V rails, one for each set of 4 pins. What I don't know is if the first set of 4 pins is expected to be provided from the same 12V rail as the main mobo connector.
I'm pretty sure I can provide at least 3.5A to half of the EPS12V connector this way, but does anyone know if I can provide the power for the EPS12V connector entirely from an external 12V 6.6A (EPS12V is spec'd @ 7A total) PSU? Will the motherboard not like this?
I already plan on getting a switching 12V 6.6A with <.1V ripple here http://www.short-circuit.com/product/80w-acdc.html or I can find one with a bit more power elsewhere, I just want to make sure I get one with low ripple vs typical 12V adapters.
Any advice is more than welcome. I can post pics if anyone is interested in seeing the mod, but it looks a bit crude as it's gone through several transformations over the past 5 years.
ASRock P67 Extreme6
i7 2600k *undervolted @ 1.05V, 3.3Ghz
8GB (2x4) 1.5V DDR 3
9800GT low power (no 6-pin connector)
hard drive, optical, etc
The system runs fine but after a few hours the PSU heats up a bit, drops in efficiency, and the system BSOD (i suspect due to insufficient power) If I let it cool off for awhile it will run for another 3 hours, if not it goes ~20min. Other components are not heating to an alarming level at all.
Anyway....
I know I can build a PCI-E 6pin power supply out of a 12V 5A external adapter (like for a monitor) and solder on the appropriate connector...
What I don't know is if I can do the same for the motherboard's 8-pin EPS12V connector. My understanding is that electrically the 8-pin connector is allowed to be supplied from 2 separate 12V rails, one for each set of 4 pins. What I don't know is if the first set of 4 pins is expected to be provided from the same 12V rail as the main mobo connector.
I'm pretty sure I can provide at least 3.5A to half of the EPS12V connector this way, but does anyone know if I can provide the power for the EPS12V connector entirely from an external 12V 6.6A (EPS12V is spec'd @ 7A total) PSU? Will the motherboard not like this?
I already plan on getting a switching 12V 6.6A with <.1V ripple here http://www.short-circuit.com/product/80w-acdc.html or I can find one with a bit more power elsewhere, I just want to make sure I get one with low ripple vs typical 12V adapters.
Any advice is more than welcome. I can post pics if anyone is interested in seeing the mod, but it looks a bit crude as it's gone through several transformations over the past 5 years.