Serious voltage problem: Help appreciated

itsakjt · Sep 21, 2013

My computer is having a very bad 3.3V reading. In idle it is around 3.09-3.12V. But while gaming or stress, it drops a lot. I was playing Grid 2 for 2 hrs straight and this is what AIDA reports while it was being played:

You can clearly see that the 3.3V has gone down to 2.95V. Now this happened before also. And it was always fixed after I pulled out the 24 pin EATX connector from the motherboard and plugged it in again. Then again after 7-14 days, the 3.3V drops again. I do the same thing and again it becomes normal. Now this has become extremely annoying. This happened on my old Asus M4A88TD M-EVO/USB3 motherboard too but at a lower frequency. Any suggestions?
Ps. I know my PSU is not that good but at present, I think I cannot afford a new one. Repair solutions are warmly welcome.
The system is working normally though.

Frick · Sep 21, 2013

You cannot trust software readings.

You need a multimeter for that sort of thing.

itsakjt · Sep 21, 2013

Frick said:
You cannot trust software readings.

http://i238.photobucket.com/albums/ff230/Meathim/volt.png

You need a multimeter for that sort of thing.

Yes I don't blindly trust them. But in BIOS too, the same thing happens. And how come after I remove and re-seat the 24 pin connector, the problem gets solved? Is it loose connection?

Frick · Sep 21, 2013

How do you even know there's a problem if you don't know if the numbers are real? Reading from BIOS and software is the same thing.

Check with a multimeter. Can indeed be loose connections.

itsakjt · Sep 21, 2013

Frick said:
How do you even know there's a problem if you don't know if the numbers are real? Reading from BIOS and software is the same thing.

Check with a multimeter. Can indeed be loose connections.

There is definitely a problem. I checked a few moments back. While the computer being on, I pressed the 24 pin wires hard. The voltage increased to 3.21V. After I released them, it dropped to 3.16V.

I think there is a problem with the 24 pin plug of the PSU.

Bo$$ · Sep 21, 2013

Well, get a new psu or check the connections in that case

McSteel · Sep 22, 2013

Loose pins on the 24-pin ATX connector are as common as a cold. If your system is working without actual issues, I suggest you drop the IT-hypochondria and relax.

Software readings are literally guesswork. And while there is some credibility to their offset readings, their baseline is always and forever but a simple guess. The super IO IC assumes a starting value based on who knows what, and then differentially measures the fluctuations. Even that is not very accurate - say at a +/- 0.5V level - but at least it's almost useful for checking for major instabilities in power supplies. Though usually when a fluctuation of that magnitude is occurring continuously, your PC will have "frozen" or BSOD'd by the time you start your monitoring software.

I personally believe we need a revision of PSU connector standards, and double bullet terminals (like the ones on UPS batteries) seem like a good idea.

Don't obsess over stuff like this, you'll never get out of it (with your sanity intact).

Deleted member 110753 · Sep 23, 2013

Take care, I killed a MB with a bad ATX connector.
One of the pins was sometime in contact sometime not...

Sasqui · Sep 23, 2013

itsakjt said:
The system is working normally though.

Don't worry, be happy, but see below

McSteel said:
Loose pins on the 24-pin ATX connector are as common as a cold. If your system is working without actual issues, I suggest you drop the IT-hypochondria and relax.

....Don't obsess over stuff like this, you'll never get out of it (with your sanity intact).

It really does sound like a loose pin, needlenose pliers and a gentle squeeze on the ATX plug here and there.

Bo$$ · Sep 23, 2013

Just buy an extender, bind the connector together to keep good contact if you dont want to mess with the connector

itsakjt · Sep 23, 2013

HiSpeed said:
Take care, I killed a MB with a bad ATX connector.
One of the pins was sometime in contact sometime not...

Sasqui said:
Don't worry, be happy, but see below

It really does sound like a loose pin, needlenose pliers and a gentle squeeze on the ATX plug here and there.

Bo$$ said:
Just buy an extender, bind the connector together to keep good contact if you dont want to mess with the connector

Thanks a lot.

I have thought of salvaging a 24 pin connector from an old PSU and replace the faulty one in my unit. Hope it will be alright then.

System Name	Coffee \| Maximus
Processor	Intel Core i7 9700K @ 5.2 GHz with AVX, 4.8 GHz cache clock \| i7 9700KF @ 5.0 GHz/4.7 GHz cache
Motherboard	ASUS Maximus X Formula \| ASUS Maximus VIII Ranger (modded BIOS for Coffee Lake)+TPM2.0 module
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Video Card(s)	Zotac RTX 3070 8 GB Twin Edge \| Galax RTX 2060 Super 8 GB
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Case	Corsair Crystal 460X RGB \| Lianli Lancool 215
Audio Device(s)	Creative Sound Blaster Z SE \| Realtek ALC1150 (Supreme FX)
Power Supply	ASUS ROG Strix 750G (80+ Gold) \| Cooler Master MWE 650 V2 (80+ Bronze)
Mouse	Cooler Master MM731 19000 DPI gaming mouse
Keyboard	Cooler Master CK721 65% mechanical gaming keyboard (tactile)
Software	Windows 11 Pro x64 \|Windows 11 Pro x64
Benchmark Scores	Cinebench R20 MT 4200,ST 547 CPU-Z MT 4871, ST 620 \| R20 MT - 4158, ST - 534, CPU-Z MT 4798, ST 603

System Name	Black MC in Tokyo
Processor	Ryzen 5 5600
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Benchmark Scores	Rimworld 4K ready!

System Name	Coffee \| Maximus
Processor	Intel Core i7 9700K @ 5.2 GHz with AVX, 4.8 GHz cache clock \| i7 9700KF @ 5.0 GHz/4.7 GHz cache
Motherboard	ASUS Maximus X Formula \| ASUS Maximus VIII Ranger (modded BIOS for Coffee Lake)+TPM2.0 module
Cooling	Cooler Master ML240 Illusion \| Cooler Master ML120L RGB
Memory	216 GB (32 GB) Kingston Fury Beast @3600 MHz CL17 \| 48 GB (32 GB) HyperX Fury @3200 MHz CL14
Video Card(s)	Zotac RTX 3070 8 GB Twin Edge \| Galax RTX 2060 Super 8 GB
Storage	Samsung PM981a 1TB NVMe+480GB SATA SSD+2 TB HDD \| Crucial P5 1TB, Crucial P1 500GB+2.5TB HDDs
Display(s)	LG OLED 55 G3, 4K 120 Hz, VRR, ALLM, GSync, FreeSync \| Samsung 43AU9070 4K TV, VRR, ALLM
Case	Corsair Crystal 460X RGB \| Lianli Lancool 215
Audio Device(s)	Creative Sound Blaster Z SE \| Realtek ALC1150 (Supreme FX)
Power Supply	ASUS ROG Strix 750G (80+ Gold) \| Cooler Master MWE 650 V2 (80+ Bronze)
Mouse	Cooler Master MM731 19000 DPI gaming mouse
Keyboard	Cooler Master CK721 65% mechanical gaming keyboard (tactile)
Software	Windows 11 Pro x64 \|Windows 11 Pro x64
Benchmark Scores	Cinebench R20 MT 4200,ST 547 CPU-Z MT 4871, ST 620 \| R20 MT - 4158, ST - 534, CPU-Z MT 4798, ST 603

System Name	Black MC in Tokyo
Processor	Ryzen 5 5600
Motherboard	Asrock B450M-HDV
Cooling	Be Quiet! Pure Rock 2
Memory	2 x 16GB Kingston Fury 3400mhz
Video Card(s)	XFX 6950XT Speedster MERC 319
Storage	Kingston A400 240GB \| WD Black SN750 2TB \|WD Blue 1TB x 2 \| Toshiba P300 2TB \| Seagate Expansion 8TB
Display(s)	Samsung U32J590U 4K + BenQ GL2450HT 1080p
Case	Fractal Design Define R4
Audio Device(s)	Line6 UX1 + some headphones, Nektar SE61 keyboard
Power Supply	Corsair RM850x v3
Mouse	Logitech G602
Keyboard	Cherry MX Board 1.0 TKL Brown
VR HMD	Acer Mixed Reality Headset
Software	Windows 10 Pro
Benchmark Scores	Rimworld 4K ready!

System Name	Coffee \| Maximus
Processor	Intel Core i7 9700K @ 5.2 GHz with AVX, 4.8 GHz cache clock \| i7 9700KF @ 5.0 GHz/4.7 GHz cache
Motherboard	ASUS Maximus X Formula \| ASUS Maximus VIII Ranger (modded BIOS for Coffee Lake)+TPM2.0 module
Cooling	Cooler Master ML240 Illusion \| Cooler Master ML120L RGB
Memory	216 GB (32 GB) Kingston Fury Beast @3600 MHz CL17 \| 48 GB (32 GB) HyperX Fury @3200 MHz CL14
Video Card(s)	Zotac RTX 3070 8 GB Twin Edge \| Galax RTX 2060 Super 8 GB
Storage	Samsung PM981a 1TB NVMe+480GB SATA SSD+2 TB HDD \| Crucial P5 1TB, Crucial P1 500GB+2.5TB HDDs
Display(s)	LG OLED 55 G3, 4K 120 Hz, VRR, ALLM, GSync, FreeSync \| Samsung 43AU9070 4K TV, VRR, ALLM
Case	Corsair Crystal 460X RGB \| Lianli Lancool 215
Audio Device(s)	Creative Sound Blaster Z SE \| Realtek ALC1150 (Supreme FX)
Power Supply	ASUS ROG Strix 750G (80+ Gold) \| Cooler Master MWE 650 V2 (80+ Bronze)
Mouse	Cooler Master MM731 19000 DPI gaming mouse
Keyboard	Cooler Master CK721 65% mechanical gaming keyboard (tactile)
Software	Windows 11 Pro x64 \|Windows 11 Pro x64
Benchmark Scores	Cinebench R20 MT 4200,ST 547 CPU-Z MT 4871, ST 620 \| R20 MT - 4158, ST - 534, CPU-Z MT 4798, ST 603

Serious voltage problem: Help appreciated

itsakjt

Frick

Fishfaced Nincompoop

itsakjt

Frick

Fishfaced Nincompoop

itsakjt

Bo$$

Lab Extraordinaire

McSteel

Deleted member 110753

Guest

Sasqui

Bo$$

Lab Extraordinaire

itsakjt

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