Overclock.net › Forums › AMD › AMD CPUs › Help with Overclocking my CPU:
New Posts  All Forums:Forum Nav:

Help with Overclocking my CPU:

post #1 of 24
Thread Starter 
Hopefully I filled out my information as through as possible so I don't need to restate my specs.

I am new to the computer scene and I am having trouble understand increasing voltage in bios.

I have a Phenom II x4 840 @ 3.2 Ghz and I want to increase it to 3.4-3.5 Ghz.

My multiplier is locked @ 16 and I know what my FSB to be multiplied at, 212.5 * 16=3400 Ghz.

But, I am having trouble understanding what voltages to increase it to? I understand the increase in voltage would create more heat and worst case scenario, destroy my components.

Anyone who overclocked their 840, would you please chime in?

Thanks!
Always upgrading
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE 3.8GHz @1.43v Northbridge ... Asus M4A87TD-EVO GeForce BFG GTS 250 1GB GDDR3 OCZ Platinum 2x2GB OCZ3rpr16002gk 
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Black 1TB 7200 RPM 32MB Lite-On DVD reader/burner, 24x DVD+R Cooler Master V6GT  Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Viewsonic 32" 1360x768 LCD Screen Microsoft Keyboard Thermaltake Toughpower XT 775W Thermaltake Element G Mid-Tower 
MouseMouse Pad
Microsoft Mouse 10 Year Old Pad 
  hide details  
Reply
Always upgrading
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE 3.8GHz @1.43v Northbridge ... Asus M4A87TD-EVO GeForce BFG GTS 250 1GB GDDR3 OCZ Platinum 2x2GB OCZ3rpr16002gk 
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Black 1TB 7200 RPM 32MB Lite-On DVD reader/burner, 24x DVD+R Cooler Master V6GT  Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Viewsonic 32" 1360x768 LCD Screen Microsoft Keyboard Thermaltake Toughpower XT 775W Thermaltake Element G Mid-Tower 
MouseMouse Pad
Microsoft Mouse 10 Year Old Pad 
  hide details  
Reply
post #2 of 24
I'm fairly new to the overclocking scene as well, but from my understanding, it basically boils down to this. Overclocking your cpu past a certain point requires you increase the voltage to maintain stability, otherwise your cpu is not getting enough power to stay stable at the increased speeds. Like you said increasing voltage does increase heat, so it's good to stay at your minimum STABLE voltage for your OC. I think the maximum safe voltage for Phenom's is like 1.5 or 1.55, but also keep in mind you don't want your cpu going over 60c at load.

One thing you should look into is an after market cooler (you can pick up a hyper 212 on amazon for <30 bucks), the stock amd HS/fan seems to be pretty craptastic, speaking from experience it's hard to achieve what I'd call preferable stable temps with them (especially if you're using stock paste / goo)

But there are much more experienced people on here who can help you out, and if you look around some, there are some pretty in depth guides explaining everything you need to know about overclocking.
post #3 of 24
What is your stock voltage/VID?
Also, load temperatures of CPU and ambient temperatures of the room?
CPU-z screenshot would be of greet assistance.
Just try booting at 215MHz.
    
CPUMotherboardGraphicsRAM
Xeon w3680 Gigabyte X58A-UD3R GTX 295 Engineering Samples 2X Corsair XMS3 
Hard DriveHard DriveCoolingOS
Sandisk SSD Seagate Corsair H50 W7 Ult 
MonitorMonitorKeyboardCase
Viewsonic VA1912wb Viewsonic VA912b K350 CM HAF 
Mouse
Logitech M570 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Xeon w3680 Gigabyte X58A-UD3R GTX 295 Engineering Samples 2X Corsair XMS3 
Hard DriveHard DriveCoolingOS
Sandisk SSD Seagate Corsair H50 W7 Ult 
MonitorMonitorKeyboardCase
Viewsonic VA1912wb Viewsonic VA912b K350 CM HAF 
Mouse
Logitech M570 
  hide details  
Reply
post #4 of 24
1.55v max for phenom II's, 62C max stated by AMD, but they usually become unstable after 55C, so staying under that is better

with the stock cooler, i'm not sure how much you'll be able to increase vcore (cpu voltage) before temps limit you because the stock cooling is not really built for that

the FSB known as the 'reference clock' will also OC the ram, hypertransport, and northbridge as well so you might need to increase those voltages too potentially

might want to give this a read
http://www.overclock.net/amd-general...ing-guide.html
Old Reliable
(15 items)
 
  
CPUMotherboardGraphicsRAM
955BE C3 @ 3.82 GHz [1.404v Load] ASUS M4A88T-V EVO/USB3 [2.8 GHz NB @ 1.318v] ASUS ROG STRIX RX 470 2x4GB G.SKILL Ripjaws [1600 8-8-8-24 @ 1.5v] 
Hard DriveOptical DriveCoolingOS
320GB WD Caviar Blue Sony Optiarc DVD RW AD-7260S ATA XSPC Rasa 750 RS240 [Backplate Mod] [MX-2] Windows 7 Ultimate 64-Bit 
MonitorKeyboardPowerCase
Acer H236HLbid  Logitech K120 OCZ ModXStream Pro 600W Modular NZXT M59 [5 x 120mm Fans + Rheobus Fan Controller] 
MouseAudioAudio
Logitech MX518 ASUS Xonar DG + Logitech Z523 Turtle Beach Ear Force X11s 
  hide details  
Reply
Old Reliable
(15 items)
 
  
CPUMotherboardGraphicsRAM
955BE C3 @ 3.82 GHz [1.404v Load] ASUS M4A88T-V EVO/USB3 [2.8 GHz NB @ 1.318v] ASUS ROG STRIX RX 470 2x4GB G.SKILL Ripjaws [1600 8-8-8-24 @ 1.5v] 
Hard DriveOptical DriveCoolingOS
320GB WD Caviar Blue Sony Optiarc DVD RW AD-7260S ATA XSPC Rasa 750 RS240 [Backplate Mod] [MX-2] Windows 7 Ultimate 64-Bit 
MonitorKeyboardPowerCase
Acer H236HLbid  Logitech K120 OCZ ModXStream Pro 600W Modular NZXT M59 [5 x 120mm Fans + Rheobus Fan Controller] 
MouseAudioAudio
Logitech MX518 ASUS Xonar DG + Logitech Z523 Turtle Beach Ear Force X11s 
  hide details  
Reply
post #5 of 24
You may not even need to increase your voltage with a mild overclock like that.Just do it with no voltage increase and see what happens.If it doesn't boot just give the voltage a little bump up.If it does boot run Intel burn test on it too test for stability,keeping an eye

on your temps.You can also run prime 95 after for 8-24 hours or so too test for ultimate stability.It's when your pc fails too boot or fails ibt or prime 95 that you have too add voltage.Don't be afraid too bump it right up(voltage) and go for 3.8 or something.If your cooler will allow it.

Even the heaviest overclocked cpu's can last many years,longer than anyone would want too keep a cpu without upgrading.
Edited by djsi38t - 5/26/11 at 7:20pm
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
I5-750 4.3@1.375v Asus Maximus III Formula Asus ENGTX465 4gb G Skill 2000 Mhz.Trident @2133 9-9-9-27 
Hard DriveOptical DriveCoolingOS
OCZ VERTEX 2 50GB SSD/WD 500GB Blue/WD640GB Black Samsung DVD/RW Corsair H-50 Windows 10 home 64 Bit Retail 
MonitorKeyboardPowerCase
ASUS 24"1080P LED Asus VE248H Abs M1 Cooler master silent pro 600 modular M600 RS-60... Lian Li Lancool PCK-58 
MouseMouse Pad
Steelseries Kinzu no 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
I5-750 4.3@1.375v Asus Maximus III Formula Asus ENGTX465 4gb G Skill 2000 Mhz.Trident @2133 9-9-9-27 
Hard DriveOptical DriveCoolingOS
OCZ VERTEX 2 50GB SSD/WD 500GB Blue/WD640GB Black Samsung DVD/RW Corsair H-50 Windows 10 home 64 Bit Retail 
MonitorKeyboardPowerCase
ASUS 24"1080P LED Asus VE248H Abs M1 Cooler master silent pro 600 modular M600 RS-60... Lian Li Lancool PCK-58 
MouseMouse Pad
Steelseries Kinzu no 
  hide details  
Reply
post #6 of 24
Thread Starter 
Quote:
Originally Posted by djsi38t View Post
You may not even need to increase your voltage with a mild overclock like that.Just do it with no voltage increase and see what happens.If it doesn't boot just give the voltage a little bump up.If it does boot run Intel burn test on it too test for stability,keeping an eye

on your temps.You can also run prime 95 after for 8-24 hours or so too test for ultimate stability.It's when your pc fails too boot or fails ibt or prime 95 that you have too add voltage.Don't be afraid too bump it right up(voltage) and go for 3.8 or something.If your cooler will allow it.

Even the heaviest overclocked cpu's can last many years,longer than anyone would want too keep a cpu without upgrading.
Thanks guys. So basically, there is no set voltage for a type of CPU. You just base the increases (one notch up) from trial and error basically? And I was thinking about buying an aftermarket cooler from Microcenter. Are the coolers there any good? (around the 30 or less dollar price range.)

Also, my motherboard has the AMD core unlocker feature on it. I used to idle @ 22 degrees C and 33 degrees C on load or playing Starcraft II. After I activated the feature, my temps went up to 30 degrees C @ idle and 40-45 degrees @ load or during Starcraft II. What happened here?

Here is my screenshot of my CPU-Z:


Uploaded with ImageShack.us
Edited by ismet - 5/27/11 at 1:38pm
Always upgrading
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE 3.8GHz @1.43v Northbridge ... Asus M4A87TD-EVO GeForce BFG GTS 250 1GB GDDR3 OCZ Platinum 2x2GB OCZ3rpr16002gk 
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Black 1TB 7200 RPM 32MB Lite-On DVD reader/burner, 24x DVD+R Cooler Master V6GT  Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Viewsonic 32" 1360x768 LCD Screen Microsoft Keyboard Thermaltake Toughpower XT 775W Thermaltake Element G Mid-Tower 
MouseMouse Pad
Microsoft Mouse 10 Year Old Pad 
  hide details  
Reply
Always upgrading
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE 3.8GHz @1.43v Northbridge ... Asus M4A87TD-EVO GeForce BFG GTS 250 1GB GDDR3 OCZ Platinum 2x2GB OCZ3rpr16002gk 
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Black 1TB 7200 RPM 32MB Lite-On DVD reader/burner, 24x DVD+R Cooler Master V6GT  Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Viewsonic 32" 1360x768 LCD Screen Microsoft Keyboard Thermaltake Toughpower XT 775W Thermaltake Element G Mid-Tower 
MouseMouse Pad
Microsoft Mouse 10 Year Old Pad 
  hide details  
Reply
post #7 of 24
yep, only bump the voltage if needed. all cpu's are different with different needs.
yep, microcenter has the coolermaster 212+ for $25. best cheap investment you can make besides these, which everyone will recommend http://www.newegg.com/Product/Produc...82E16835708011 (mosfet heatsinks)
w00t
(18 items)
 
   
CPUMotherboardGraphicsRAM
ph2 x20be asus m4a785-m sapphire vapor-x 4850  geil black dragon 1066 5-5-5-15-20 
Hard DriveOptical DriveCoolingOS
wd  asus dvd multi-write arctic cooling freezer 64 pro win 7 ultimate x64 
MonitorKeyboardPowerCase
samsung 42" lcd logitech wireless antec basic 500watt old dell crap 
MouseAudio
logitech wireless pioneer 7.1 
  hide details  
Reply
w00t
(18 items)
 
   
CPUMotherboardGraphicsRAM
ph2 x20be asus m4a785-m sapphire vapor-x 4850  geil black dragon 1066 5-5-5-15-20 
Hard DriveOptical DriveCoolingOS
wd  asus dvd multi-write arctic cooling freezer 64 pro win 7 ultimate x64 
MonitorKeyboardPowerCase
samsung 42" lcd logitech wireless antec basic 500watt old dell crap 
MouseAudio
logitech wireless pioneer 7.1 
  hide details  
Reply
post #8 of 24
Thread Starter 
I am not sure how those heat sinks work, do they just connect to the motherboard and then dissipate heat through the exhaust runners?

Also, as good as the cooler master 212 plus sounds, after looking at how it fits in a case on youtube, I don't think that massive heat sink will fit with my side panel closed.
Always upgrading
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE 3.8GHz @1.43v Northbridge ... Asus M4A87TD-EVO GeForce BFG GTS 250 1GB GDDR3 OCZ Platinum 2x2GB OCZ3rpr16002gk 
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Black 1TB 7200 RPM 32MB Lite-On DVD reader/burner, 24x DVD+R Cooler Master V6GT  Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Viewsonic 32" 1360x768 LCD Screen Microsoft Keyboard Thermaltake Toughpower XT 775W Thermaltake Element G Mid-Tower 
MouseMouse Pad
Microsoft Mouse 10 Year Old Pad 
  hide details  
Reply
Always upgrading
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE 3.8GHz @1.43v Northbridge ... Asus M4A87TD-EVO GeForce BFG GTS 250 1GB GDDR3 OCZ Platinum 2x2GB OCZ3rpr16002gk 
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Black 1TB 7200 RPM 32MB Lite-On DVD reader/burner, 24x DVD+R Cooler Master V6GT  Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Viewsonic 32" 1360x768 LCD Screen Microsoft Keyboard Thermaltake Toughpower XT 775W Thermaltake Element G Mid-Tower 
MouseMouse Pad
Microsoft Mouse 10 Year Old Pad 
  hide details  
Reply
post #9 of 24
Thread Starter 
Any other good cpu fans you guys would recommend?

I really appreciate the help guys!
Always upgrading
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE 3.8GHz @1.43v Northbridge ... Asus M4A87TD-EVO GeForce BFG GTS 250 1GB GDDR3 OCZ Platinum 2x2GB OCZ3rpr16002gk 
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Black 1TB 7200 RPM 32MB Lite-On DVD reader/burner, 24x DVD+R Cooler Master V6GT  Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Viewsonic 32" 1360x768 LCD Screen Microsoft Keyboard Thermaltake Toughpower XT 775W Thermaltake Element G Mid-Tower 
MouseMouse Pad
Microsoft Mouse 10 Year Old Pad 
  hide details  
Reply
Always upgrading
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE 3.8GHz @1.43v Northbridge ... Asus M4A87TD-EVO GeForce BFG GTS 250 1GB GDDR3 OCZ Platinum 2x2GB OCZ3rpr16002gk 
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Black 1TB 7200 RPM 32MB Lite-On DVD reader/burner, 24x DVD+R Cooler Master V6GT  Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Viewsonic 32" 1360x768 LCD Screen Microsoft Keyboard Thermaltake Toughpower XT 775W Thermaltake Element G Mid-Tower 
MouseMouse Pad
Microsoft Mouse 10 Year Old Pad 
  hide details  
Reply
post #10 of 24
Thread Starter 
I am not sure how those heat sinks work, do they just connect to the motherboard and then dissipate heat through the exhaust runners?

Also, as good as the cooler master 212 plus sounds, after looking at how it fits in a case on youtube, I don't think that massive heat sink will fit with my side panel closed.

I think I am going to go with this one:
http://www.microcenter.com/single_pr...uct_id=0312368
Always upgrading
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE 3.8GHz @1.43v Northbridge ... Asus M4A87TD-EVO GeForce BFG GTS 250 1GB GDDR3 OCZ Platinum 2x2GB OCZ3rpr16002gk 
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Black 1TB 7200 RPM 32MB Lite-On DVD reader/burner, 24x DVD+R Cooler Master V6GT  Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Viewsonic 32" 1360x768 LCD Screen Microsoft Keyboard Thermaltake Toughpower XT 775W Thermaltake Element G Mid-Tower 
MouseMouse Pad
Microsoft Mouse 10 Year Old Pad 
  hide details  
Reply
Always upgrading
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955 BE 3.8GHz @1.43v Northbridge ... Asus M4A87TD-EVO GeForce BFG GTS 250 1GB GDDR3 OCZ Platinum 2x2GB OCZ3rpr16002gk 
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Black 1TB 7200 RPM 32MB Lite-On DVD reader/burner, 24x DVD+R Cooler Master V6GT  Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Viewsonic 32" 1360x768 LCD Screen Microsoft Keyboard Thermaltake Toughpower XT 775W Thermaltake Element G Mid-Tower 
MouseMouse Pad
Microsoft Mouse 10 Year Old Pad 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › Help with Overclocking my CPU: