Go Back   Hardware Canucks > PC BUILDERS & TWEAKERS CORNER > Troubleshooting

    
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old August 31, 2012, 09:54 PM
Rookie
 
Join Date: Aug 2012
Posts: 3
Default Cpu clock spike

Hi guys,i have some trouble with my cpu/mb, i really haven't understood yet,basically my hardware spec:
Cpu:Fx 8150
Psu:750Watt
MB:M5a78l asus (760g chipset)
Corsair H100 Cpu cooler
Ram:8gb Corsair 1600
Nvidia Gtx Zotac 570
1Tb HD
when i'm run a benchmark or a test for the cpu my clock's speed drops at 52 from 3,9 ghz at 1,4 ghz,i already updated my bios and nothing changed,if you know something please help me.Thanks
Reply With Quote
  #2 (permalink)  
Old September 1, 2012, 05:17 PM
Hall Of Fame
F@H
 
Join Date: Nov 2008
Location: Ottawa, ON
Posts: 1,226

My System Specs

Default

I assume you are talking about the standard Cool & Quiet feature?
See: Whats up with my CPU? - A SpeedStep F.A.Q.
__________________
"The computer programmer says they should drive the car around the block and see if the tire fixes itself." [src]
Reply With Quote
  #3 (permalink)  
Old September 1, 2012, 10:01 PM
Rookie
 
Join Date: Aug 2012
Posts: 3
Default

i've already disabled in the bios,nothing changed
Reply With Quote
  #4 (permalink)  
Old September 2, 2012, 12:11 AM
Rookie
 
Join Date: Sep 2012
Posts: 16
Default

I have the same cpu, I have a game running in the background. the speeds are mostly 3912 but like yours one of them drops to 1404. and sometimes one will go to 4213, seems normal.
Reply With Quote
  #5 (permalink)  
Old September 2, 2012, 01:48 AM
Rookie
 
Join Date: Aug 2012
Posts: 3
Default

Yeah but when i'm playing bf3 fps drops dramatically from 80/90 at 30/40 or less,is it normal?
Reply With Quote
  #6 (permalink)  
Old September 2, 2012, 04:15 AM
Rookie
 
Join Date: Sep 2012
Posts: 16
Default

That's the cpu thermal throttling, I think the max temp for this cpu is 61C.
Reply With Quote
  #7 (permalink)  
Old September 2, 2012, 03:12 PM
Top Prospect
 
Join Date: Aug 2012
Location: Saskatoon
Posts: 162
Default

Have you tried Prime95 while observing with CPUID's HWMonitor, and TMonitor? Great utilities.
Does it happen when your H100's fans are running at max RPM?
BF3 and the majority of games these days are GPU-dependent and therefore the drop in CPU speed should not be an issue, you may just need to lower some of the game settings for better performance.
Reply With Quote
  #8 (permalink)  
Old September 2, 2012, 03:56 PM
dandelioneater's Avatar
Hall Of Fame
F@H
 
Join Date: Dec 2010
Location: Kelowna, BC
Posts: 1,114

My System Specs

Default

Quote:
Originally Posted by Crino90 View Post
my clock's speed drops at 52 from 3,9 ghz at 1,4 ghz Thanks
52 seems a bit warm for 3.9GHz with an H100 cooler. The pump/fans are all plugged in properly?

run HWmonitor, cpu-z and fire up prime95 (8 threads) to see what the temps are when the cpu is under load. Also try to determine if the multiplier is randomly changing while you have all 8 'cores' loaded, or if it is heat related (thermal throttling). I had a fx-6100 and gigabyte ud3 board back in the day and found that the multiplier would randomly rise and drop under any cpu load. I found that it was due to 'AMD turbo core boost' not working properly - a bios update fixed this. So perhaps try disabling turbo and see if that makes any difference. Other than that, try reseating the h100, making sure that it is making good contact, is tight, and dont use too much paste.

Also, check this out: BD overclocking guide it tells which features to disable.

edit: are the CPU's VRM's getting hot? there doesnt appear to be a heatsink cooling them on that board.
__________________
Reply With Quote
  #9 (permalink)  
Old September 2, 2012, 04:49 PM
Dzzope's Avatar
Hall Of Fame
 
Join Date: Oct 2010
Location: Irishman in Kiev, wOOoo, I'm an alien...
Posts: 2,688

My System Specs

Default

Quote:
Originally Posted by BryceBooth View Post
BF3 and the majority of games these days are GPU-dependent and therefore the drop in CPU speed should not be an issue, you may just need to lower some of the game settings for better performance.
Nearly all games are GPU dependant but BF3 and some other titles are also processor heavy
Reply With Quote
  #10 (permalink)  
Old September 2, 2012, 07:18 PM
Hall Of Fame
 
Join Date: Oct 2007
Posts: 1,577
Default

^ Agreed with above.

It also definitely sounds like thermal throttling, your stuff getting too hot.
Reply With Quote
Reply


Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
What are you overclocking ,Core clock or Boost clock elmorejohn46 Video Cards 4 November 20, 2013 12:24 PM
Clock Proggy? Dr_BenD_over O/S's, Drivers & General Software 13 January 29, 2010 10:30 PM
BFG 285 GTX clock speeds grinder Troubleshooting 11 November 22, 2009 07:25 PM
Spike VGA's Dr_BenD_over Gaming 6 November 19, 2009 07:28 AM
Pci-Clock help Dashock Troubleshooting 2 January 14, 2008 10:46 PM