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Huge DPC spikes on new Gigabyte Z77 motherboard related to USB and/or mouse

post #1 of 4
Thread Starter 
Thought this would be of interest to the mousing community:

http://www.overclock.net/t/1239993/official-gigabyte-z77x-owners-discussion-information-support-thread-and-club-ud5h-ud3h-d3h-and-all/310#post_17077802
post #2 of 4
I was planning to upgrade from an i5 750 soon. Might hold off a bit longer.

Sounds like a possible timing issue. If you havn't already, go through tne usual DPC reducing procedure (power saving off etc).

Try one of these 4 configurations:

HPET enabled in bios + bcdedit /deletevalue useplatformclock
HPET enabled in bios + bcdedit /set useplatformclock true

HPET disabled in bios + bcdedit /deletevalue useplatformclock
HPET disabled in bios + bcdedit /set useplatformclock true

Run WinTimerTester 1.1 to verify your QPC and GTC are equal (ratio of 1).

http://www.mediafire.com/?xzo9n84d8lze9nb

Download link in following post if more trustworthy source required for app:
h
ttp://www.xtremesystems.org/forums/showthread.php?179044-Real-Temp-New-temp-program-for-Intel-Core-processors&p=4731014#post4731014
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CPUMotherboardGraphicsRAM
3570k @ 4.4ghz Asus Z77 Deluxe GTX970 SLI 24GB 
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Acer XB270HU CM QuickFire Red - PBT white keycaps Seasonic X-850 Raven RV02 
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My System
(17 items)
 
  
CPUMotherboardGraphicsRAM
3570k @ 4.4ghz Asus Z77 Deluxe GTX970 SLI 24GB 
MonitorKeyboardPowerCase
Acer XB270HU CM QuickFire Red - PBT white keycaps Seasonic X-850 Raven RV02 
MouseMouse PadAudioOther
Roccat Savu Zowie P-TF Onkyo SE-90 Marantz PM7003 amplifier 
OtherOther
Wharfedale 10.1 speakers Sennheiser HD598 
  hide details  
Reply
post #3 of 4
Thread Starter 
Quote:
HPET disabled + bcdedit /set useplatformclock true

Stays locked in at 1.000 average after 100 ticks
Quote:
HPET disabled + bcdedit /deletevalue useplatformclock

Sits at .9999 average after 100 ticks then if you let it run up to 200 ticks, it bounces back and forth between .9999 and 1.000, by 300 ticks, it's a solid 1.000.
Edited by r0ach - 4/26/12 at 7:16pm
post #4 of 4
Quote:
Originally Posted by whybother View Post

I was planning to upgrade from an i5 750 soon. Might hold off a bit longer.
Sounds like a possible timing issue. If you havn't already, go through tne usual DPC reducing procedure (power saving off etc).
Try one of these 4 configurations:
HPET enabled in bios + bcdedit /deletevalue useplatformclock
HPET enabled in bios + bcdedit /set useplatformclock true
HPET disabled in bios + bcdedit /deletevalue useplatformclock
HPET disabled in bios + bcdedit /set useplatformclock true
Run WinTimerTester 1.1 to verify your QPC and GTC are equal (ratio of 1).
http://www.mediafire.com/?xzo9n84d8lze9nb
Download link in following post if more trustworthy source required for app:
h
ttp://www.xtremesystems.org/forums/showthread.php?179044-Real-Temp-New-temp-program-for-Intel-Core-processors&p=4731014#post4731014

Actually, this might or might not be unrelated, but I had some issues with my windows 7 x64, where sometimes the entire GUI of windows would stutter, setting HPET enabled in bios and useplatformclock true on, it removed those issues

However, it did drop my performance in all sorts of stuff, timedemo in cs 1.6 for example (you can get the demo file on satanion.dk/cs) went from 1100 to 650, other programs that uses graphics showed a drop aswell.

For reference im on a ASRock z68 Extreme4 with bios 1.50, with a 2500K 8GB ram, and a GTX 560 Ti, its kinda.. lol when 1.6 lags for me biggrin.gif
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