I've yet to read anything good about the M# PSUs...The price is great, I mean really good...compared to the Opus/DSATX...I've got pretty much the rest of my system figured out...it's just that damned power supply...and cost.
Then again, I guess spending less money on a M#-atx psu and having it fry my Mobo, is worse than spending a little bit more just one time and getting something better...
Opinions?
People complain about problems far more then they brag about things that work.
The older M# Generations did have problems (aka avoid what you find on ebay unless you can be sure its new) but i use an m4 and love it-no problems at all. Best part is I got the usb patch cable and can fine tune far more settings then then the more expensive opus.
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From what I have heard the M1's and M2's were/are good little PSU's.
The Early M4's however were a bit iffy, but any that have been reflashed with firmware 1.3 or above are fine. Obviously the new ones ship with the new firmware. This I know from experience as I had an early one. It worked fine as a standard PSU, but the delay off timings didn't work, which is what I needed, I have since had someone flash it with the 1.3 firmware and all seems good.
BTW their support is a bit cr@p though, sent an email about my issues before I got it flashed, took a second email to get a response, and then it was only a "have you tried this?" which I had already stated I had in the original email. Since then my emails have gone unanswered.
I even pointed them to this thread so they could see how their PSU was perceived on the forum.
My m2 has been running strong now for close to 4 years. The one issue that I had is if you are hibernating and let the car sit idle for a week you may come back to a dead battery. I am currently doing a full shutdown and reboot and have no battery draining.
Then you weren't hibernating...you were most likely doing a hybrid suspend. Hibernation and shutdown are the same thing hardware wise-the only difference is the data stored on the disk.Originally Posted by CMOS1138
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raven, i feel the same way about these PSU, i never tried one but i read alot about them, and i have to say the price on them isnt right ! in my opinion these DC-DC PSUs are very overpriced, the cost of making this device is no more then $10. think ab out this is an AC-DC costs less yet has more components and is more complex.....
besides that point, i read many posts where that M-itx works fine but dies after a year or 2.
personally i am and will avoid them.
ive been using dc-ac inverter in 3 installs NEVER had a problem.
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That couldn't be any more incorrect...AC power supplies are far simpler and less expensive to make->the two don't even compare. $10? take a little trip over to digikey.com and i think you'll find its about five times that to make.
While yes the units are overpriced your paying for the extra demands a vehicle power supply needs to meet. Whether you go with opus or mini-box (m#-atx) is your call but DON'T use an ac inverter to power a carpc. Thats one thing 99% of the people on this forum will agree with.
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Not necessarily. it could be that the PSU is set to power the 5v line even when the PC is shut off or in hibernation mode. This could drain the battery over time. I know for a fact the M4 usually has two options per timing settings, one id full power off the the other is the aforementioned powering of the 5v line.
$10, are you serious? do you know how difficult it is to get a PSU to power +12, +3.3 +5.0 -12v Stably from a flucturating power source which could be anything from 15v down to 9v?
Why is it we keep getting these people who think things can be built, marketed, supported with a profit in, for stupidly small amounts of money?
this is very similar to the small vga screen price thread---dc-dc power supplies are expensive because there is not enough demand to make them in large quantities, like there is with dc-ac inverters... smaller quantities, larger price, more hassle for the manufacturer...
what he said-- there are to many extra steps to use a dc-ac---- you must first use a dc-ac adapter, that creates a very poor, stepped sine wave(unless you have a expensive true sine inverter, than it is a different story...), and then use a ac-dc power supply that might be good enough to take that poor ac signal, and turn it back into a dc signal... your just begging for noise problems with a setup like that...
it seems that most of the bugs in the m4 have been worked out, and it seems that most of the problems with some of the m series power supplies were user error, but it seems that there were problems with most of the power supplies right after they were released--and i think that it is poor of a manufacturer to offer a product before it was thoughly tested, like they seem to have done... but, i think that they have reached a point that i might be willing to try them again if they suit my build requirements.
thats ok, when he comes out with his own version of a 220 watt dsatx for $25-$30, i'll take 2...$10, are you serious? do you know how difficult it is to get a PSU to power +12, +3.3 +5.0 -12v Stably from a flucturating power source which could be anything from 15v down to 9v?
Why is it we keep getting these people who think things can be built, marketed, supported with a profit in, for supidly samll amounts of money?
Well yes and no....if the power supply thought it was in an S3 power state it could leave the 5v rail on until the failsafe timer fired, or low battery was detected. But hibernate (S4) has no current draw other then the 5v standby which is on even in S5. So basically even if the power is supplied, since nothing is using it there should be no draw.
Although I do have to say -> the stock m4 low battery voltage is 11.2V which for most cars is too low. First thing i did was up that to 11.8.
I blame China...Why is it we keep getting these people who think things can be built, marketed, supported with a profit in, for supidly samll amounts of money?
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