Overclock.net › Forums › AMD › AMD CPUs › One core hotter than the other?
New Posts  All Forums:Forum Nav:

One core hotter than the other?

post #1 of 9
Thread Starter 
Why is one of my cores consistantly 10 to 12 c warmer than the other? Is this bad? Is there something I can do about it?

Thanks in advance for the info guys!
Austiclees - PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Atholn 64 X2 6400+ ASUS M3A32-MVP Deluxe WiFi-AP Edition ATI Radeon HD 3870 4x 1GB Corsair XMS2 Dual Channel DDR2 PC 6400 DHX 
Hard DriveOptical DriveOSMonitor
2 Maxtor 500GB sata II in RAID0 LG Dual Layer Dual; Vista Ultimate 64bit & XP Pro 32 bit Westinghouse 17" 1280x768 
KeyboardPowerCaseMouse
Logitech wireless Ultra XPro 750 Watt 80% eff Custom Logitech wireless 
Mouse Pad
none 
  hide details  
Reply
Austiclees - PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Atholn 64 X2 6400+ ASUS M3A32-MVP Deluxe WiFi-AP Edition ATI Radeon HD 3870 4x 1GB Corsair XMS2 Dual Channel DDR2 PC 6400 DHX 
Hard DriveOptical DriveOSMonitor
2 Maxtor 500GB sata II in RAID0 LG Dual Layer Dual; Vista Ultimate 64bit & XP Pro 32 bit Westinghouse 17" 1280x768 
KeyboardPowerCaseMouse
Logitech wireless Ultra XPro 750 Watt 80% eff Custom Logitech wireless 
Mouse Pad
none 
  hide details  
Reply
post #2 of 9
My differences between cores 1 and 2 usually range from 8c to 13c, been running like that for over a year 24/7 so I don't think it's hurting, think it would have broke by now if it was.
    
CPUMotherboardGraphicsRAM
i7 920 ASUS Rampage II Extreme 2x 5870's 6gb Corsair Dominators 
Hard DriveOSMonitorKeyboard
WD Velociraptor Windows 7 Ultimate 3x Acer AL2216W's Logitech G15 
PowerCaseMouse
Corsair HX 1000W Antec 1200 Logitech G9x 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 920 ASUS Rampage II Extreme 2x 5870's 6gb Corsair Dominators 
Hard DriveOSMonitorKeyboard
WD Velociraptor Windows 7 Ultimate 3x Acer AL2216W's Logitech G15 
PowerCaseMouse
Corsair HX 1000W Antec 1200 Logitech G9x 
  hide details  
Reply
post #3 of 9
it's usually normal for them to be different. However, 10-12 seems like a bit much. You may want to re apply the thermal paste and re seat the hsf and check after that. Just make sure the thermal paste is even.
post #4 of 9
There was a rather lengthy discussion on this a while back on Amd's official forums.. I had the same issue except one of my cores were off over 15c under load! An Amd tech guy chimed in that when the sensors are placed on the die they are not always placed dead center at the hottest point of the chip.. Even a few micro millimeters off can be the diff of 10c+.. It by no means affects anything else you just have one core that is giving a cooler than expected reading because of the sensor placement.. Always count the hotter core reading as accurate..
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel coreI7 930 stock (for now) Asus P6TD Deluxe ATI 5870 6 gb Corsair Dominators 
Hard DriveOSMonitorPower
3XWD750gb Win xp Vista & Win7 samsg 204B 20.1" Olevia 32" OCZ 700w 
CaseMouse
TT Spedo Advanced LogitechMX500 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel coreI7 930 stock (for now) Asus P6TD Deluxe ATI 5870 6 gb Corsair Dominators 
Hard DriveOSMonitorPower
3XWD750gb Win xp Vista & Win7 samsg 204B 20.1" Olevia 32" OCZ 700w 
CaseMouse
TT Spedo Advanced LogitechMX500 
  hide details  
Reply
post #5 of 9
Thread Starter 
One of my firends here at work mentioned wet sanding the to of the processor down because they are not always even. You guys know anything about this?

Thanks for the help thus far
Austiclees - PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Atholn 64 X2 6400+ ASUS M3A32-MVP Deluxe WiFi-AP Edition ATI Radeon HD 3870 4x 1GB Corsair XMS2 Dual Channel DDR2 PC 6400 DHX 
Hard DriveOptical DriveOSMonitor
2 Maxtor 500GB sata II in RAID0 LG Dual Layer Dual; Vista Ultimate 64bit & XP Pro 32 bit Westinghouse 17" 1280x768 
KeyboardPowerCaseMouse
Logitech wireless Ultra XPro 750 Watt 80% eff Custom Logitech wireless 
Mouse Pad
none 
  hide details  
Reply
Austiclees - PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Atholn 64 X2 6400+ ASUS M3A32-MVP Deluxe WiFi-AP Edition ATI Radeon HD 3870 4x 1GB Corsair XMS2 Dual Channel DDR2 PC 6400 DHX 
Hard DriveOptical DriveOSMonitor
2 Maxtor 500GB sata II in RAID0 LG Dual Layer Dual; Vista Ultimate 64bit & XP Pro 32 bit Westinghouse 17" 1280x768 
KeyboardPowerCaseMouse
Logitech wireless Ultra XPro 750 Watt 80% eff Custom Logitech wireless 
Mouse Pad
none 
  hide details  
Reply
post #6 of 9
That works IF the problem is a concave or convex Internal Hs with poor contact to your HSF. The best thing to do if you actually do have that problem is to delid the IHS all together and run the chip naked.. I did all that and my cores were still 15c apart in temps so ill stick with my above theory..
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel coreI7 930 stock (for now) Asus P6TD Deluxe ATI 5870 6 gb Corsair Dominators 
Hard DriveOSMonitorPower
3XWD750gb Win xp Vista & Win7 samsg 204B 20.1" Olevia 32" OCZ 700w 
CaseMouse
TT Spedo Advanced LogitechMX500 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel coreI7 930 stock (for now) Asus P6TD Deluxe ATI 5870 6 gb Corsair Dominators 
Hard DriveOSMonitorPower
3XWD750gb Win xp Vista & Win7 samsg 204B 20.1" Olevia 32" OCZ 700w 
CaseMouse
TT Spedo Advanced LogitechMX500 
  hide details  
Reply
post #7 of 9
I just unlided my 4400x2. It was running hot so I followed Txtmstrjoe's advice. Seems to have helped. The differentials have varied though. I reapplied AS5 three times. First differential was 6C. Second: 12C. Last 5-6C. Spread out to 8C under load. Close enough. That Big Typhoon gets pretty heavy after a while.
Homework Folder
(13 items)
 
  
CPUMotherboardGraphicsRAM
x2 5200+ Windsor Gigabyte GA-MA790X-DS4 BFG GTX 260 OC 4GB 
Hard DriveOptical DriveOSMonitor
WD 160gb SATA Samsung XP Professionalx64 ACER H2434H 
KeyboardPowerCaseMouse
e-machines POS OCZ GameXStream 700W Cooler Master CM690 Beater 
Mouse Pad
Westport 
  hide details  
Reply
Homework Folder
(13 items)
 
  
CPUMotherboardGraphicsRAM
x2 5200+ Windsor Gigabyte GA-MA790X-DS4 BFG GTX 260 OC 4GB 
Hard DriveOptical DriveOSMonitor
WD 160gb SATA Samsung XP Professionalx64 ACER H2434H 
KeyboardPowerCaseMouse
e-machines POS OCZ GameXStream 700W Cooler Master CM690 Beater 
Mouse Pad
Westport 
  hide details  
Reply
post #8 of 9
my 5600+ is usually 8-12 degrees differential... dunno if its normal but thats just how it is for me, my heatsink is on right etc. been this way since day 1...
Apollo
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 D0 Asus P6T Sapphire 4870X2 3x2GB OCZ Gold DDR3-1600 
Hard DriveOptical DriveOSMonitor
2 x 500gb RAID 0, 2 x 1TB Caviar Black Samsung 22x Sata DVD+-R/DL Vista x64 Acer x223w 
KeyboardPowerCaseMouse
Logitech G15 gen2 Cooler Master 850w 6 Rail Antec Twelve Hundred OCZ Equilizer 
Mouse Pad
Fellowes Ergonomic Wrist Support 
  hide details  
Reply
Apollo
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 D0 Asus P6T Sapphire 4870X2 3x2GB OCZ Gold DDR3-1600 
Hard DriveOptical DriveOSMonitor
2 x 500gb RAID 0, 2 x 1TB Caviar Black Samsung 22x Sata DVD+-R/DL Vista x64 Acer x223w 
KeyboardPowerCaseMouse
Logitech G15 gen2 Cooler Master 850w 6 Rail Antec Twelve Hundred OCZ Equilizer 
Mouse Pad
Fellowes Ergonomic Wrist Support 
  hide details  
Reply
post #9 of 9
Thread Starter 
I just picked up 2 brand new 500 GB Maxtor's today from CompUSA's sale for 30 bucks a peice, so I'll be hooking them up tonight in Riad0. I guess while I'm at it, I'll pop the lid off my chip. I forgot to get more TIM.
Austiclees - PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Atholn 64 X2 6400+ ASUS M3A32-MVP Deluxe WiFi-AP Edition ATI Radeon HD 3870 4x 1GB Corsair XMS2 Dual Channel DDR2 PC 6400 DHX 
Hard DriveOptical DriveOSMonitor
2 Maxtor 500GB sata II in RAID0 LG Dual Layer Dual; Vista Ultimate 64bit & XP Pro 32 bit Westinghouse 17" 1280x768 
KeyboardPowerCaseMouse
Logitech wireless Ultra XPro 750 Watt 80% eff Custom Logitech wireless 
Mouse Pad
none 
  hide details  
Reply
Austiclees - PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Atholn 64 X2 6400+ ASUS M3A32-MVP Deluxe WiFi-AP Edition ATI Radeon HD 3870 4x 1GB Corsair XMS2 Dual Channel DDR2 PC 6400 DHX 
Hard DriveOptical DriveOSMonitor
2 Maxtor 500GB sata II in RAID0 LG Dual Layer Dual; Vista Ultimate 64bit & XP Pro 32 bit Westinghouse 17" 1280x768 
KeyboardPowerCaseMouse
Logitech wireless Ultra XPro 750 Watt 80% eff Custom Logitech wireless 
Mouse Pad
none 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › One core hotter than the other?