Low 12v Rail Voltage (GPU-Z)

amp281 · Jan 11, 2013, 01:16 PM

I have a Thermaltake 700w Bronze power supply and a XFX DD HD 7850 2GB GPU. While running Counterstrike GO and other 3d applications, my 12v in GPU-Z dips from 11.66 to 11.41. The highest it goes when idling in windows is 11.66.

Is there anything I can do about this?

Is there any kind of software setting that could be doing this or do I have a stinker of a PSU?

I knew thermaltake PSUs weren't stellar but it was a good price. Could it be the 4+1 power phase of the mobo instead? Videocard is NOT overclocked.

brandonwh64 · Jan 11, 2013, 01:25 PM

I would test with a multimeter before judging software readings of the PSU.

amp281 · Jan 11, 2013, 01:37 PM

Quote:

Originally Posted by brandonwh64

I would test with a multimeter before judging software readings of the PSU.

Whats the preferred method? Backprobing connector? GPU takes two 12 volt 6 pin plugs too.

brandonwh64 · Jan 11, 2013, 01:44 PM

This seems like a good guide

http://www.hardwareheaven.com/guides/testingPSU/

Frick · Jan 11, 2013, 01:51 PM

NEVER trust software. My 12V line according to software is at 14V and 5V at 3.1V.

amp281 · Jan 11, 2013, 02:52 PM

Should I only probe the PCI-E 6 pins or can I probe any 12v rail to test this?

cadaveca · Jan 11, 2013, 02:53 PM

Are you having any problems? If not, do not be concerned.

I'd check at the plug, but I am pretty sure you'll find it perfectly fine.

brandonwh64 · Jan 11, 2013, 02:53 PM

Quote:

Originally Posted by amp281

Should I only probe the PCI-E 6 pins or can I probe any 12v rail to test this?

The guide I posted shows you how to test all of the connections. Read through it and do as the guide shows and you should get your answer.

de.das.dude · Jan 11, 2013, 03:10 PM

according to software my 5C is at 6.7V

but dont worry. as cadaveca said, if you dont have problems, dont worry.

Frag Maniac · Jan 11, 2013, 09:53 PM

If the actual were below 11.5v, there'd be concerns, but as mentioned it's impossible to tell with mere software tests. My 12v measures anywhere from 11.93 to 12.13 depending what app is used. None are consistent from one to another.

Jan 11, 2013, 01:16 PM	#1
amp281 Join Date: Dec 2012 Posts: 176 (1.04/day) Thanks: 34 Thanked 16 Times in 15 Posts System Specs	Low 12v Rail Voltage (GPU-Z) I have a Thermaltake 700w Bronze power supply and a XFX DD HD 7850 2GB GPU. While running Counterstrike GO and other 3d applications, my 12v in GPU-Z dips from 11.66 to 11.41. The highest it goes when idling in windows is 11.66. Is there anything I can do about this? Is there any kind of software setting that could be doing this or do I have a stinker of a PSU? I knew thermaltake PSUs weren't stellar but it was a good price. Could it be the 4+1 power phase of the mobo instead? Videocard is NOT overclocked. __________________ CPU-Z validation sig pics temporarily blocked

System Name:	Amp281
Processor:	Intel I5-3570k Delidded with CLU @ 4.4Ghz
Motherboard:	Gigabyte GA-Z77X-UD3H
Cooling:	Corsair H100i with 4 fans push-pull
Memory:	Kingston HyperX Black 16GB DDR3 1600
Video Card:	XFX Double D Radeon HD 7850 2GB
Hard Disk:	WD VelociRaptor 300GB 10000 RPM 32MB Cache
Optical Drive:	ASUS DRW-24B1ST
CRT/LCD Model:	ASUS VH236H x 2
Case:	Antec 300v2 with radiator front mounted.
Sound Card:	Onboard
PSU:	Thermaltake TR2 TR-700 700W
Software:	Windows 7 Professional

Jan 11, 2013, 01:25 PM	#2
brandonwh64 Addicted to Bacon and StarCrunches!!! Join Date: Sep 2009 Location: Chatsworth, GA Posts: 13,563 (10.02/day) Thanks: 2,146 Thanked 5,341 Times in 3,696 Posts System Specs	I would test with a multimeter before judging software readings of the PSU. __________________ Cruncher's: All GPU's GPU's: 7970 3GB Unlocked = 8 Threads 5770 1GB OCed = 2 Threads

System Name:	The StarCrunch Defender!
Processor:	I7 2600K @ 4.5ghz 1.32V
Motherboard:	Gigabyte Z68X-UD3H-B3
Cooling:	Corsair A70 Push/Pull
Memory:	G-Skill Ripjaws 2x4GB DDR3 1866mhz
Video Card:	Gigabyte 7970 3GB Reference Card at boost clocks
Hard Disk:	2x 500GB WD Blue Raid 0 / 1TB WD Black
Optical Drive:	Samsung DVD/R/RW SATA
CRT/LCD Model:	ViewSonic VG2227wm 1080P
Case:	NZXT Tempest 410 Elite
Sound Card:	Onboard Realtek (Azalia)
PSU:	Corsair 750TX
Software:	Windows 7 Home X64

System Name:	Amp281
Processor:	Intel I5-3570k Delidded with CLU @ 4.4Ghz
Motherboard:	Gigabyte GA-Z77X-UD3H
Cooling:	Corsair H100i with 4 fans push-pull
Memory:	Kingston HyperX Black 16GB DDR3 1600
Video Card:	XFX Double D Radeon HD 7850 2GB
Hard Disk:	WD VelociRaptor 300GB 10000 RPM 32MB Cache
Optical Drive:	ASUS DRW-24B1ST
CRT/LCD Model:	ASUS VH236H x 2
Case:	Antec 300v2 with radiator front mounted.
Sound Card:	Onboard
PSU:	Thermaltake TR2 TR-700 700W
Software:	Windows 7 Professional

Jan 11, 2013, 01:44 PM	#4
brandonwh64 Addicted to Bacon and StarCrunches!!! Join Date: Sep 2009 Location: Chatsworth, GA Posts: 13,563 (10.02/day) Thanks: 2,146 Thanked 5,341 Times in 3,696 Posts System Specs	This seems like a good guide http://www.hardwareheaven.com/guides/testingPSU/ __________________ Cruncher's: All GPU's GPU's: 7970 3GB Unlocked = 8 Threads 5770 1GB OCed = 2 Threads

Jan 11, 2013, 01:51 PM	#5
Frick Fishfaced Nincompoop Join Date: Feb 2006 Location: Sweden Posts: 7,882 (2.98/day) Thanks: 1,076 Thanked 1,445 Times in 1,151 Posts System Specs	NEVER trust software. My 12V line according to software is at 14V and 5V at 3.1V. __________________ Typemachine: Acer Aspire One D250 \| Atom N280 1.6 Ghz \| 1GB DDR2 \| 160GB SATA \| 10.1' 1024 x 600 \| Lubuntu 12.10 Oldbox: HP D530 \| Pentium 4 2.8 Ghz \| 1GB DDR \| 40GB \| Windows XP "The 'gentle biker' look is overdone. I'm going for 'psycho hillbilly.' "

System Name:	Ongoing scavanging
Processor:	Sempron 140
Motherboard:	MSI 760GM-P23 (FX)
Cooling:	Somesuch
Memory:	2GB DDR3
Video Card:	HD 2400 Pro
Hard Disk:	160GB + 1TB
Optical Drive:	Yes
CRT/LCD Model:	19" 1280 x 1024
Case:	Wossname
Sound Card:	On board
PSU:	Wattchamacallit
Software:	Windows 7 Pro

Jan 11, 2013, 02:52 PM	#6
amp281 Join Date: Dec 2012 Posts: 176 (1.04/day) Thanks: 34 Thanked 16 Times in 15 Posts System Specs	Should I only probe the PCI-E 6 pins or can I probe any 12v rail to test this? __________________ CPU-Z validation sig pics temporarily blocked

Jan 11, 2013, 02:53 PM	#7
cadaveca My name is Dave Join Date: Apr 2006 Location: The Great White North Posts: 10,771 (4.14/day) Thanks: 4,486 Thanked 5,204 Times in 3,203 Posts System Specs	Are you having any problems? If not, do not be concerned. I'd check at the plug, but I am pretty sure you'll find it perfectly fine. __________________ Gadgets, Phones, Tablets, Cameras, TVs, HiFi...NextPowerUp -Only real men play games THIS way.

System Name:	Eyefinity Gamer
Processor:	Intel i5 3570K @ 4.6 GHz
Motherboard:	ASUS Maximmus V Formula
Cooling:	Corsair H100
Memory:	16 GB G.Skill F3-2666C11Q-16GTXD
Video Card:	AMD Radeon HD7950 3GB x2 w/AMD Catalyst 12.10
Hard Disk:	OCZ Nocti 60GB mSATA, Crucial M4 120GB x2
Optical Drive:	LG BluRay/HD-DVD
CRT/LCD Model:	3x Dell U2412M
Case:	LianLi T60
Sound Card:	N/A
PSU:	Silverstone Strider 750W GOLD
Software:	Windows 8 Pro
Benchmarks:	Benchmarking is for suckers. ;)

Jan 11, 2013, 03:10 PM	#9
de.das.dude Join Date: Jun 2010 Location: Wild Wild East Posts: 4,555 (4.24/day) Thanks: 2,323 Thanked 1,333 Times in 913 Posts System Specs	according to software my 5C is at 6.7V but dont worry. as cadaveca said, if you dont have problems, dont worry. __________________ my wallet isnt hashwell compatiple sad face

System Name:	SuperDuperUberComputer
Processor:	AMD Phenom II 945 X4 3.0Ghz
Motherboard:	ASRock 990FX Extreme 4
Cooling:	CM Hyper 212 EVO push:pull+ 1 panaflow 113CFM + 2 x 120mm NZXTs
Memory:	2x4GB DDR3 Corsair Vengeance 1600MHz CL9
Video Card:	GIGABYTE GTS450 OC2
Hard Disk:	SATA II 80GB Hitachi 7200RPM,W.D 500GB Green \|\| 4GB int + random SD cards
Optical Drive:	ASUS DVD drive
CRT/LCD Model:	Samsung Sync Master 793s CRT\|
Case:	NZXT Guardian 921RB
Sound Card:	Realtek ALC892 with THX True Studio
PSU:	Corsair GS600
Software:	Windows 7 64bit
Benchmarks:	real men dont need to bench :p

Jan 11, 2013, 09:53 PM	#10
Frag Maniac Join Date: Nov 2010 Posts: 1,433 (1.55/day) Thanks: 10 Thanked 242 Times in 209 Posts System Specs	If the actual were below 11.5v, there'd be concerns, but as mentioned it's impossible to tell with mere software tests. My 12v measures anywhere from 11.93 to 12.13 depending what app is used. None are consistent from one to another.

Processor:	Intel i7 950 @ 3.2GHz
Motherboard:	ASUS P6X58D-E
Cooling:	Corsair H50 push/pull
Memory:	Kingston HyperX 1600 6GB
Video Card:	Sapphire HD 7970 OC @ 1000 Core
Hard Disk:	Plextor M5P 128GB/Seagate 1TB Barracuda
Optical Drive:	ASUS DRW-24B1ST/BLK/B/AS
CRT/LCD Model:	Panasonic TC-L32U3
Case:	Antec DF-85
Sound Card:	Yamaha RX-V371 AVR
PSU:	XFX 850w Black Edition
Software:	W7 Ultimate 64 bit

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