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Discussion Starter · #1 · (Edited)
Hi everyone, I think I have a slight power problem. I am on my second PSU and for some reason the 12v rail on both only seems to be putting out 5.82v. Either I am misinterpreting something or I have some power issue outside of my PSU. This all started with artifacts and crashes while running 3dmark 2006 after buying a new MSI GeForce 7900GT. After reading through forums, I checked my voltages and this seems to be the culprit but if two different PSUs are doing the same thing, what could it be?

The first PSU was a RaidMax 450w the second, a Dynex 500w.
I know they are far from good quality but they shouldn't be doing this should they?
===============================================
Temperatures:
Motherboard 33 °C (91 °F)
CPU 25 °C (77 °F)
Aux 36 °C (97 °F)
GPU 49 °C (120 °F)
Seagate ST3200827A 37 °C (99 °F)

Cooling Fans:
CPU 8654 RPM

Voltage Values:
CPU Core 1.30 V
+2.5 V 2.51 V
+3.3 V 1.78 V
+5 V 5.00 V
+12 V 5.82 V
+5 V Standby 4.92 V
VBAT Battery 3.04 V
Debug Info F 4E 2F 00
Debug Info T 36 33 25
Debug Info V 51 9D 6F BA 5B 48 B9 (77)

===============================================

CPU Info
CPU 1/1
AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
Manufacturer AMD
Family AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
Architecture 64-bit
Internal Clock 2.0 GHz
Internal Clock Maximum 3.0 GHz
External Clock 201.0 MHz
Socket Designation Socket M2
HyperThreadingTechnology Available - 2 Logical Processors
Capabilities MMX, CMov, RDTSC, 3DNow!, Extended 3DNow!, SSE, SSE2, PAE, NX
Version AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
Caches
Level 1 128 KB
Level 2 512 KB



DirectX Info
Version 9.0c
Long Version 4.09.00.0904


--------------------------------------------------------------------------------

DirectDraw
Version 5.03.2600.2180
Primary Device MSI NX7900 GT (NVIDIA GeForce 7900 GT)

Display Device 1/1
MSI NX7900 GT (NVIDIA GeForce 7900 GT) Driver 8.4.1.9

Description MSI NX7900 GT (NVIDIA GeForce 7900 GT)
Manufacturer NVIDIA
Total Local Video Memory 256 MB
Total Local Texture Memory 256 MB
Total AGP Memory 512 MB
Driver File nv4_disp.dll
Driver Version 8.4.1.9
Driver Date 3-8-2006
Driver WHQL Certified false
Max Texture Width 4096 px
Max Texture Height 4096 px
Max User Clipping Planes 6
Max Active Hardware Lights 8
Max Texture Blending Stages 8
Fixed Function Textures In Single Pass 8
Vertex Shader Version 3.0
Pixel Shader Version 3.0
Max Vertex Blend Matrices 0
Max Texture Coordinates 8
VGA Memory Clock 0.0 Hz
VGA Core Clock 0.0 Hz
PCI
Name MSI NX7900 GT (NVIDIA GeForce 7900 GT)
Vendor ID 0x10de
Device ID 0x0291
SubSystem ID 0x06601462
Revision ID 0x00a1

--------------------------------------------------------------------------------

Texture Formats
32-bit ARGB [8888]
32-bit RGB [888]
16-bit RGB [565]
16-bit RGB [555]
16-bit ARGB [1555]
16-bit ARGB [4444]
8-bit A [8]
8-bit YUV [800]
16-bit AYUV [8800]
FourCC [DXT1]
FourCC [DXT2]
FourCC [DXT3]
FourCC [DXT4]
FourCC [DXT5]

Capabilities
AGP Texturing, Hardware Transform and Lighting, Positional Lights, Subpixel Accurate Rasterizing, Stencil Buffers, Range Fog, Table Fog, Vertex Fog, W-Fog, Specular Gouraud Shading, Anisotropic Filtering, Bilinear Filtering, Point Sampling, Trilinear Filtering, Additive Texture Blending, Dot3 Texture Blending, Multiplicative Texture Blending, Subtractive Texture Blending, Environmental Bump Mapping, Environmental Bump Mapping With Luminance, Cube Mapping, Factor Alpha Blending, Vertex Alpha Blending, Texture Alpha Blending, Texture Clamping, Texture Mirroring, Texture Wrapping, Guard Band Support, Mipmap LOD Bias Adjustment, Projected Textures, Volume Textures, Point Primitive Support, Full-Screen Anti-Aliasing, DXT Compressed Textures, Two Sided Stencil Test, Mipmapped Volume Textures, Mipmapped Cube Textures, Texture Border Color, Spherical Mapping, Automatic Mipmap Generation, Hardware Rasterization, Shading, Transform and Lighting, Scissor Test, Legacy Depth Bias

--------------------------------------------------------------------------------

DirectShow
Version 9.0c
Long Version 4.09.00.0904

Registered DirectShow Filters
.RAM file Parser
AC3 Parser Filter
ACELP.net Sipro Lab Audio Decoder
ACM Wrapper
ASF ACM Handler
ASF DIB Handler
ASF DJPEG Handler
ASF ICM Handler
ASF JPEG Handler
ASF URL Handler
ASF embedded stuff Handler
ASX file Parser
ASX v.2 file Parser
AVI Decompressor
AVI Draw
AVI Splitter
AVI/WAV File Source
BDA Slip De-Framer
Color Space Converter
CyberLink Audio Decoder
CyberLink AudioCD Filter
CyberLink AudioCD Filter (PDVD6)
CyberLink DVD Navigator (PDVD6)
CyberLink Demux (PDVD6)
CyberLink LPCM Converter
CyberLink MP3/WAV Wrapper
CyberLink MPEG Decoder
CyberLink MPEG-1 Splitter
CyberLink MPEG-2 Splitter
CyberLink Video/SP Decoder
DV Muxer
DV Splitter
DV Video Decoder
Decrypt/Tag
Default DirectSound Device
Default MidiOut Device
File Source (Async.)
File Source (Netshow URL)
File Source (URL)
File stream renderer
Indeo audio software
Indeo video 4.4 Decompression Filter
Indeo video 5.10 Decompression Filter
Internal Script Command Renderer
Line 21 Decoder
Line 21 Decoder 2
MIDI Parser
MJPEG Decompressor
MPEG Audio Decoder
MPEG Layer-3 Decoder
MPEG Video Decoder
MPEG-2 Demultiplexer
MPEG-2 Sections and Tables
MPEG-2 Splitter
MPEG-I Stream Splitter
Microsoft MPEG-4 Video Decompressor
Microsoft Screen Video Decompressor
Microsoft TV Caption Decoder
Multi-file Parser
NSC file Parser
NVVPE
Overlay Mixer2
QT Decompressor
QuickTime Movie Parser
SAMI (CC) Parser
VBI Codec
VBI Surface Allocator
VGA 16 Color Ditherer
Video Port Manager
Video Renderer
WM ASF Reader
WM ASF Writer
WST Decoder
WST Pager
WST Renderer
Wave Parser
Windows Media Audio Decoder
Windows Media Multiplexer
Windows Media Update Filter
Windows Media Video Decoder
Windows Media source filter
XML Playlist


--------------------------------------------------------------------------------

DirectSound
Version 5.3.2600.2180
Speaker Configuration Stereo
Speaker Geometry Wide
Primary Device Realtek HD Audio output

Sound Device 1/1
Realtek High Definition Audio Driver 5.10.0.5188

Description Realtek HD Audio output
Manufacturer Realtek
Driver File RtkHDAud.sys
Driver Version 5.10.0.5188
Driver Date 11-10-2005
Driver WHQL Certified true
Max Supported 3D Hardware Sounds 33
HD Audio Support true
EAX Support Supported
PCI
Name Realtek High Definition Audio
Vendor ID 0x0000
Device ID 0x0000
SubSystem ID 0x00000000
Revision ID 0x0000

Capabilities
Continuous Rate, Primary Buffer with 16-bit Samples, Primary Buffers with 8-bit Samples, Monophonic Primary Buffers, Stereo Primary Buffers, Hardware-mixed Secondary Buffers with 16-bit Samples, Hardware-mixed Secondary Buffers with 8-bit Samples, Hardware-mixed Monophonic Secondary Buffers, Hardware-mixed Stereo Secondary Buffers


Memory Info
Total Physical Memory 1.50 GB
Free Physical Memory 1.07 GB
Total Pagefile Memory 3.35 GB
Free Pagefile Memory 3.02 GB


--------------------------------------------------------------------------------
Memory Array 1/1
Max Module Capacity 16 MB
Location System Board
Use System
Supported Speeds
Supported Types
Supported Voltages

Memory Slot 1/4
Installed Enabled Size 1.00 GB
Form Factor DIMM
Frequency 0.0 Hz
Slot A0 [Bank0/1]
Type Details
Enabled Size 1.00 GB
Total Bit Width 64 b
Data Bit Width 64 b
Memory Slot 2/4
Installed Enabled Size 512 MB
Form Factor DIMM
Frequency 0.0 Hz
Slot A1 [Bank2/3]
Type Details
Enabled Size 512 MB
Total Bit Width 64 b
Data Bit Width 64 b
Memory Slot 3/4
Installed Enabled Size 0 B
Form Factor DIMM
Frequency 0.0 Hz
Slot A2 [Bank4/5]
Type Details
Enabled Size 0 B
Total Bit Width 64 b
Data Bit Width 64 b
Memory Slot 4/4
Installed Enabled Size 0 B
Form Factor DIMM
Frequency 0.0 Hz
Slot A3 [Bank6/7]
Type Details
Enabled Size 0 B
Total Bit Width 64 b
Data Bit Width 64 b




Motherboard Info
Supported Slot Types ISA, PCI
Manufacturer C51PVGM-M
Model C51PVGM-M
BIOS Vendor Phoenix Technologies, LTD
BIOS Version 6.00 PG
BIOS Release Date 08/09/2006
BIOS Properties Plug and Play, Flash
AGP
Available Rate 0x00000000
Selected Rate 0x00000000
Aperture Size 0 B
Sideband Addressing
Fast Write

Card Slots
Slot 1/5 (PCI)
Order 1
Designation PCI0
Type PCI
Characteristics 5.0V, PME Signal
Data Bus Width 32 b
Details Available, Long
IRQ 0

Slot 2/5 (PCI)
Order 2
Designation PCI1
Type PCI
Characteristics 5.0V, PME Signal
Data Bus Width 32 b
Details Available, Long
IRQ 0

Slot 3/5 (PCI)
MSI NX7900 GT (NVIDIA GeForce 7900 GT)
Order 3
Designation PCI2
Type PCI
Characteristics 5.0V, PME Signal
Data Bus Width 32 b
Details In Use, Long
Device Class Display Adapter
Manufacturer NVIDIA
Driver Version 8.4.1.9
Driver Date 3-8-2006
IRQ 16


Slot 4/5 (PCI)
Realtek RTL8139/810x Family Fast Ethernet NIC
Order 4
Designation PCI3
Type PCI
Characteristics 5.0V, PME Signal
Data Bus Width 32 b
Details In Use, Long
Device Class Network Adapter
Manufacturer Realtek Semiconductor Corp.
Driver Version 5.641.209.2006
Driver Date 4-19-2006
IRQ 19

Slot 5/5 ()
Order 5
Designation PCI4
Characteristics 5.0V, PME Signal
Data Bus Width 32 b
Details Available, Long
IRQ 0


System Devices
Name PCI standard host CPU bridge
Manufacturer (Standard system devices)
Name PCI standard host CPU bridge
Manufacturer (Standard system devices)

Name PCI standard host CPU bridge
Manufacturer (Standard system devices)
Name PCI standard host CPU bridge
Manufacturer (Standard system devices)

Name PCI standard ISA bridge
Manufacturer (Standard system devices)
Name NVIDIA nForce PCI System Management
Manufacturer NVIDIA

Name Standard Dual Channel PCI IDE Controller
Manufacturer (Standard IDE ATA/ATAPI controllers)
Name Standard Dual Channel PCI IDE Controller
Manufacturer (Standard IDE ATA/ATAPI controllers)

Name Microsoft UAA Bus Driver for High Definition Audio
Manufacturer Microsoft
Name Standard OpenHCD USB Host Controller
Manufacturer (Standard USB Host Controller)

Name Standard Enhanced PCI to USB Host Controller
Manufacturer (Standard USB Host Controller)
Name PCI standard PCI-to-PCI bridge
Manufacturer (Standard system devices)

Name nForce Memory Controller
Manufacturer NVIDIA
Name nForce Memory Controller
Manufacturer NVIDIA

Name nForce Memory Controller
Manufacturer NVIDIA
Name nForce Memory Controller
Manufacturer NVIDIA

Name nForce Memory Controller
Manufacturer NVIDIA
Name nForce Memory Controller
Manufacturer NVIDIA

Name nForce Memory Controller
Manufacturer NVIDIA
Name nForce HyperTransport Bridge
Manufacturer NVIDIA

Name PCI standard PCI-to-PCI bridge
Manufacturer (Standard system devices)
Name PCI standard PCI-to-PCI bridge
Manufacturer (Standard system devices)

Name PCI standard PCI-to-PCI bridge
Manufacturer (Standard system devices)
Name nForce Memory Controller
Manufacturer NVIDIA

Name nForce Memory Controller
Manufacturer NVIDIA

USB Devices
Description USB Root Hub
Driver Date 7-1-2001
Driver Version 5.1.2600.2180
Device Class Universal Serial Bus Controller
Description USB Root Hub
Driver Date 7-1-2001
Driver Version 5.1.2600.2180
Device Class Universal Serial Bus Controller
Description USB Human Interface Device
Driver Date 7-1-2001
Driver Version 5.1.2600.2825
Device Class Human Interface Device

Description American Power Conversion USB UPS
Driver Date 7-1-2001
Driver Version 5.1.2600.2825
Device Class Human Interface Device
Description Multimedia Card Reader
Driver Date 3-31-2005
Driver Version 1.0.0.0
Device Class Universal Serial Bus Controller

FireWire Devices



Monitor Info
Monitor 1/1
Name Plug and Play Monitor
Manufacturer (Standard monitor types)
Max Width 1600 px
Max Height 1200 px



Operating System Info
Operating System Microsoft Windows XP
Version 5.1.2600
Service Pack Service Pack 2
Windows Environment 32-bit
Locale US
Desktop Width 1024 px
Desktop Height 768 px
Desktop BPP 32 b
DEP
Hardware Support true
Applications Protected true
Drivers Protected true
User Option On for essential Windows programs and services only

Open Processes
Name PID Memory Usage
3DMark03.exe 2496 11 MB
alg.exe 3880 3 MB
AluSchedulerSvc.exe 1884 628 KB
apcsystray.exe 260 3 MB
AppSvc32.exe 1424 3 MB
arservice.exe 912 2 MB
CCAPP.EXE 996 1 MB
CCSVCHST.EXE 1220 3 MB
csrss.exe 560 3 MB
ctfmon.exe 1408 3 MB
dllhost.exe 3200 6 MB
ehmsas.exe 2888 4 MB
ehrecvr.exe 1668 4 MB
ehSched.exe 228 4 MB
ehtray.exe 900 1 MB
explorer.exe 1400 24 MB
HPZipm12.exe 2020 2 MB
iexplore.exe 1988 3 MB
iPodService.exe 3124 3 MB
iTunesHelper.exe 1056 4 MB
lsass.exe 640 2 MB
mainserv.exe 540 4 MB
mcrdsvc.exe 2544 3 MB
MDM.EXE 1188 3 MB
nvsvc32.exe 1880 3 MB
PRISMXL.SYS 2228 1 MB
readericon45G.exe 776 3 MB
RTHDCPL.exe 708 21 MB
rundll32.exe 1244 3 MB
services.exe 628 3 MB
smss.exe 496 388 KB
spoolsv.exe 1588 6 MB
svchost.exe 812 5 MB
svchost.exe 860 4 MB
svchost.exe 928 27 MB
svchost.exe 1024 3 MB
svchost.exe 1072 4 MB
svchost.exe 2284 6 MB
svchost.exe 2368 4 MB
svchost.exe 2220 3 MB
System 4 256 KB
System Idle Process 0 28 KB
winlogon.exe 584 4 MB
wmiprvse.exe 2092 5 MB
wmiprvse.exe 1584 7 MB
zHotkey.exe 948 4 MB

Logical Drives
Letter Label Type Capacity Available
C: Hard Disk 180.95 GB 103.73 GB
D: RECOVERY Hard Disk 5.34 GB 2.12 GB
E: BF2DELUXE CD 1 CD-ROM 678 MB 0 B
G: Floppy 0 B 0 B
H: Floppy 0 B 0 B
I: Floppy 0 B 0 B
J: Floppy 0 B 0 B


Open Applications
3DMark03
Tech Support Forum - Post New Thread - Windows Internet Explorer



Hard Disk Info
Hard Disk Drive 1/1
Name ST3200827A
Manufacturer (Standard disk drives)
Capacity 0 B
Model ST3200827A
Interface Type IDE
 

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12,283 Posts
There is only one reason why a voltage rail can be wrong .. the supply isn't adequate for the job it's being used for and the "overcurrent" condition drags the voltage down because it can't supply the voltage at the load condition.
This of coures can be caused in tuirn by two conditions. One is that the supply is faulty or the load is wrong ie there is a fault.
I would start off by using the power supply "sticky" to check out your power supply requirements against your power supply rating.
 

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Discussion Starter · #3 ·
I used the PSU calculator and it said I only needed a 420w PSU. Having tried a 450w and am currently using a 500w, I'm still scratching my head. The computer is a month old emachines T6540 which came with a 280w. All I have added to it is one 1gig stick of ram, the GeForce 7900GT, and of course the PSU.:4-dontkno
 

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Hi,

Did you add the 30% to the figure you got from the caluclator? REmember, after you run the calculater and add the 30%, that is the very basic power needed to run that unit. A 450 supply is so close to that line, it is difficult for that supply (even if a good one which you are not using) to pull that unit. One must also mention that a lot of times these cheap supplies are not very efficient and don't have enough amps on the +12 rail.

As you mentioned the two you have tried are very weak supplies and that 7900GT takes a bunch of juice IMHO.
 

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Hi again,

Look on the side of your power supply and see what the +12 volt rail says for amps. Your video card alone requires a bare minimum of 20 amps on the +12 rail according to the manufacturer's website. Much discussion I have been reading says that is not even enough so unless your power supply is above that by a good measure, that would be most likely your answer.

Report back with information/questions/concerns.
 

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Discussion Starter · #6 ·
Thanks for your help, I really appreciate it. I think you hit the nail on the head:pray: , the 500w I'm using only puts out 18A on the 12v line. Unfortunately, I won't be able to get a new PSU for a while. Do you think I will risk causing major damage by running the 3D card without sufficient amps or just get substandard performance?
 

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Hi,

I would not run that if it were mine, but you have to make that choice. The reason I would not run it is that there is always a danger with a weak power supply to harm components of your computer if running underpowered.

Please take a few minutes to read the power supply sticky under my signature area and then you will better understand how a power supply works.

My suggestion would be to put your old card back in (if you have it yet) until you have the cash to put in a good power supply. Then you can be assured that no harm will come to underpowered computer components.
 

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you are playing with fire runnign that PSU in your current rig.

when the PSU says a final farewell, you could most definetly take other things with it adding severely to your miseries.


I suggest you get the Antec 650 watt Trio series PSU they are just a wisker over the $100.00 mark

also check to see if the deal is still running on the OCZ gamerXstream 700 watt at tigherdirect.com


read this and you will understand even more! (thanks Kalim for the link!)
http://www.digit-life.com/articles2/power/tt_xp480.html


here is a classic example of poor quality units; this unit couldnt put out 277 watts without shutdowns yet its sold as a 480 watt!!
 

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Discussion Starter · #9 ·
:pray: Thanks again for the help guys. It's funny, I was looking at that Antec 650 when I picked up the 500w but decided I'd save twenty bucks :sigh: . I'll go exchange this one and grab it tommorow. Thanks again!
 

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It looks to me like your info is from Everest home edition.

Your voltages and temps look exactly like my readings, odd, I wonder if you have an ECS mobo. PC Wizard has similar, but different, measurements.

I have tried 3 PSU's I had laying around and no change every time I run Everest or PC Wizard.

My computer has been running fine for some time now.

Really, think about it, if the 12V rails was really 5.8V, many things wouldn't be running. Certainly the HD and DVD player wouldn't work at 5.8V. Same goes for the 3.3V rail, if it was 1.8V, not much would be working.

Also, if there was some component drawing enough current to drag the rail down to 5.8V that would mean the PSU is supplying it's max current capability all the time, in my case 18A. That would create a lot of heat in the PSU and for my 500W PSU the fan would be running full blast, which it isn't.

It think Everest and PC Wizard can only report what the on board sensor tells it, so if that is bad or giving bad data, your seeing bad data.

The best way to really tell is check the 12V is at a free molex connector, should be the yellow wires at the molex connector, while the PC is running using a multimeter, this occurred to me after the 3rd PSU change. I did this and it is 12V when Everest is saying 5.8V. I trust the multimeter reading. I also checked the 3.3V rail and it is reading 3.4V when Everest says 1.82V, again I believe the multimeter.

So don't worry, I think you PC is fine and no need to buy a big PSU when you don't need one, but check with a multimeter to be sure.
 

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Hmmmmmmmmm,

Well I came across this thread doing a google search on another subject, saw the date and thought it was 1-31-08, so I thought I'd post my thoughts.

If I would have noticed it was 1-31-07, I wouldn't have posted to such an old thread. Sorry, I hope my response helps someone, even if it is a year late :4-dontkno
 

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Well I came across this thread doing a google search on THIS topic and found the reply very helpful. I come across ancient threads all the time when I go searching for fixes for everything from computers to water heaters to transmissions to electrical wiring. I am ALWAYS glad to see when someone adds to a topic, even if the topic is a year old.
 
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