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Thread: Need new PSU

  1. #17
    RIP Peterb ik9000's Avatar
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    Re: Need new PSU

    Quote Originally Posted by Spec-Chum View Post
    Also worth mentioning, I was on stock GPU speeds whilst playing tale of 2 brothers last night when it restarted.
    you getting any crash reports? Have you tried decoding them? How is the memory? Doesn't nec have to be the GPU!

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    Re: Need new PSU

    I know, I don't think it is the GPU, I think it's the 7yo PSU lol

    No reports no, just an unexpected reboot, there's no BSOD.

    Can't see it being the memory as it did it before that was swapped. The only 2 items that have been in both machines that rebooted are the GPU and the PSU.

    My PSU is more than powerful at 750W total but it's one of those split rail designs that has a max of 18A per rail, which isn't a lot really. I can't help thinking that may have an impact.

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    Re: Need new PSU

    OK, my bad on this. Ran DDU, which I didn't before, reinstalled Catalyst 14.7 and no crashes since, even on full OC.

    Seems there's life in the old dog yet!
    I'm not insane. My mother had me tested.

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    Senior Member Bonebreaker777's Avatar
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    Re: Need new PSU

    I guess that was definitely worth it instead of buying something (new) you don't need.

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    Re: Need new PSU

    OK, no more crashes since I used DDU and reinstalled Catalyst, however got a new SSD today and decided to reinstall Windows from scratch so I could go UEFI.

    Cat 14.7 R3 was one of the first drivers I installed followed by all the chipset drivers, sound and network drivers. Fired up GRiD 2 and bang, switched off again. The same place every time, just as it get to the flag saying "Press Enter" under it. Every time, about 5 times in a row.

    "OK", I thought, lets see if DDU works again, and low and behold, it did!

    There's something going on with some motherboard driver/MSI app here, but I can't figure out which one!

    Does Intel ME or some chipset drivers have an impact on Catalyst? Not sure, but a full install and resinstall of Cat 14.7 works!

    It's working fine now, but I just don't get it lol
    I'm not insane. My mother had me tested.

  6. #22
    RIP Peterb ik9000's Avatar
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    Re: Need new PSU

    Quote Originally Posted by Spec-Chum View Post
    It's working fine now, but I just don't get it lol
    If I had a dollar for every time.... Glad you got it sorted.

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    Re: Need new PSU

    I am not sure if I would go for a G2 psu as the fans don't go below roughly 40 db. At least for me. Got the 1300w G2 recently, luckily it was cheap but still a little loud for my liking.

  8. #24
    RIP Peterb ik9000's Avatar
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    Re: Need new PSU

    Quote Originally Posted by PurpleShift View Post
    I am not sure if I would go for a G2 psu as the fans don't go below roughly 40 db. At least for me. Got the 1300w G2 recently, luckily it was cheap but still a little loud for my liking.
    well what is your system spec? What load are you running the PSU at? Most don't fair that well below 20%. It might well be loud if it's running at only 50% efficiency 100% of the time and throwing out heat as a result.

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    Re: Need new PSU

    The EVGA SuperNOVA 1000 G2 & 1300 G2 don't have a fanless mode, so the fan always spins on those two models. Unfortunately they also have quite a high minimum fan speed.

    The two lower wattage models: 750 & 850, do have the optional fanless mode and a slightly lower minimum fan speed.

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    Re: Need new PSU

    Got another random restart last night while just starting to play Crysis 3, it was literally seconds into the first level - just as you start to follow the bald guy.

    This was after a good couple of hours of Mortal Kombat Komplete and 3 hours of CS:GO so I'm not overly concerned, but still, the issue is still there although to a much lesser extent.

    My theory of a conflict between this MSI mobo and the ATi drivers is a little unlikely as, as I said before, I did have a reboot on my "old" PC which had a different mobo and CPU. The only things "donated" from that were:
    750W ToughPower - PC is stable in all CPU and gfx benchmarks like Heaven and Valley etc
    R9 280 gfx card
    ATi 14.7 RC3 drivers - You recall a full reinstall of these worked wonders, 1 reboot in a week - and I game a lot (new fad! - I'll get bored soon haha)
    8Gb DDR3 RAM (passes memtest and WMD)

    I really do need to try the new 14.9 drivers as it does seem odd the reboots get much less frequent when I completely removed and reinstalled 14.7

    What would your prime suspect be tho?
    I'm not insane. My mother had me tested.

  11. #27
    Senior Member Pob255's Avatar
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    Re: Need new PSU

    What motherboard are you running?

    one thing to try is a combined cpu & gpu stress test at the same time while monitoring voltages, esp the 12v see if it's dropping or climbing when you start testing as that's often the sign that the 12v is being overloaded.
    For tests I'd use something like superpi and FurMark to give it a real workout.
    for voltage monitoring ether a multimeter (most accurate) or there should be an msi utility for it.

    on the "multi" rail thing, most psu are not actually multi rail, they are multi virtual rail, it was more of a safety feature brought in by atx spec's, instead of all the 12v wires leading to one solder point on the psu pcb they come from more than one contact point and the psu controller chip inside is designed to to kick in the OCP if anything pulls too much or spikes too high.

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    Re: Need new PSU

    Hiya, the current motherboard is an msi gaming 5. The old motherboard was a gigabyte p55 hd3r
    I'm not insane. My mother had me tested.

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    Re: Need new PSU

    Oh forgot to mention, the 12v rail(s) are pretty much constant at 12.096v regardless of load but I must confess I've never run prime or superpi at the same time as a gfx benchmark tho.

    Will test.
    I'm not insane. My mother had me tested.

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    Re: Need new PSU

    The thing that gets me tho is why does a full uninstall and reinstall of the SAME driver pretty much fix it? 1 restart in a week compared to pretty much 1 every couple of hours before.

    Curiouser and curiouser...
    I'm not insane. My mother had me tested.

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    Re: Need new PSU

    Quote Originally Posted by ik9000 View Post
    BTW for a single card machine I would expect a 750W to be more than adequate. I don't think you need 850w. 600w should suffice for a single GPU even with OC.
    Agreed
    I have a 4690k, 5 fans and a gtx 780ti with a 750w psu
    750w is more than enough

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    Re: Need new PSU

    Oh, don't get me wrong, I completely agree, 750W is more than enough, maybe even for XFire but we have to consider this PSU is over 7 years old now, so I really doubt it's capacity is 750W any more and the 8-pin PCI-E cable is on the same 12v rail (18A) as the main mobo connector.

    You're meant to use the 2 modular PCI-E connectors for "high end" cards, but they're both 6-pin lol
    I'm not insane. My mother had me tested.

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