Overclock.net › Forums › Intel › Intel CPUs › Idle BSODs and C-States
New Posts  All Forums:Forum Nav:

Idle BSODs and C-States

post #1 of 20
Thread Starter 
I've been thinking about this a bit, and I just can't see anything other than C-states to blame for idle BSODs (at least to a degree). I'm posting this because I have a theory and I'm curious what those with a lot of experience think, and especially whether this has worked for anyone else with a 2500k or 2600k processor.

I know I'm not alone with these idle BSOD's... in fact, from what's happening to me and what I keep reading with others... it is actually not at idle but rather a situation with light cpu usage. For a lot its been browsing the internet and for some - watching a video. I haven't heard anything else like typing in Word yet but it wouldn't surprise me. Anyway, I just did a test last night with OCCT for 8 hours on high priority, passed it with no errors, but didn't last 15 minutes browsing the internet before getting a BSOD. My computer was truly idle for 1.5 hours after last night's test - it finished before I woke up, but my computer is set to never sleep so it was idle for that time period.

Some info I found valuable and helpful as for understanding C-states, and not just whether it worked when some random person turned them on or off:

C-states, C-states and even more C-states
All C-states and their functions

I get error messages like 0x3B and 0x1E which suggest "add more Vcore"... and I'm sure with enough Vcore it would be fixed. But my feeling is if I can be rock solid at 100% load 24/7 (not saying 8hr OCCT is rock solid but its decent), then why should I be adding more voltage just so I can use the internet?! The higher you overclock, the closer you get to unsafe temperatures, so you can't just smack tons of voltage onto the CPU like they do for stock settings. I would rather use a little more power under light use than use more power and generate more heat under high load. If possible of course.

The downside I'm aware of thus far is that it's been said that disabling C-states will considerably affect HDD performance, especially SataIII or SSD. I am not sure if this is for C1E only, other C-states, or any/all C-states being disabled. Regardless I decided to set C3 and C6 to disabled and booted up with everything the same as before. At the time I had forgotten about this supposed performance drop so all I was doing was crossing my fingers I didn't blue screen.

As it turns out, my computer actually booted bit faster, programs opened much faster, searching is crazy fast... everything is faster (this is a really big difference I'm talking about here). I ran a random benchmark and got a score 15.7% better than the expected result for my HDD, but I didn't yet run it with C3/C6 back on to compare. I'm not sure I'll care if I get the same result because it definitely feels a lot better and that's what matters to me.

So far I have been browsing the internet for over 3 hours. I definitely still have my fingers crossed but at the very least, things seem to be better (the BSODs usually come pretty fast). I will report back if it works for me. Please let me know if it did or did not work for you.

Note: It's always possible that I'm simply not actually stable, and that I'm just at the brink of stability/instability..... but this seemed to make a lot of sense to me so I thought I would put it out there and see if I'm right/wrong or missing something.

Why is it that power saving features (C1E, EIST, C-states) in general work better on Sandy Bridge, while previously it was recommended to turn them off while overclocking? Why should I trust C-states?
Edited by donkrx - 7/29/11 at 5:26pm
    
CPUMotherboardGraphicsRAM
i5-2500K [24/7: 4.9ghz 1.47v] ASRock P67 Extreme 4 (B3) EVGA Geforce 570 [890/2200 1.1v] G.Skill Ripjaws 2x4GB 1600Mhz 
Hard DriveMonitorPowerCase
WD Caviar Black 1TB HP f2105 1680x1050 Corsair TX750 V2 (backup Antec BP550W) Antec 902 
Mouse
Logitech G500 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5-2500K [24/7: 4.9ghz 1.47v] ASRock P67 Extreme 4 (B3) EVGA Geforce 570 [890/2200 1.1v] G.Skill Ripjaws 2x4GB 1600Mhz 
Hard DriveMonitorPowerCase
WD Caviar Black 1TB HP f2105 1680x1050 Corsair TX750 V2 (backup Antec BP550W) Antec 902 
Mouse
Logitech G500 
  hide details  
Reply
post #2 of 20
Ok this is ironic. I crashed while playing counter strike, which is not intensive at all. So I rebooted to disable those. I'm sure it's a light load issue as well.
x99 Liquidx
(17 items)
 
Sandy z77 Pro
(11 items)
 
 
CPUMotherboardGraphicsRAM
Intel i7-6800k| 4.2Ghz | 1.291v ASRock x99 Professional Fatal1ty / 3.1 EVGA Titan X | EK-FC Copper | EK Backplate 32Gb Corsair Vengeance RGB DDR4 3467Mhz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 PRO 512GB Samsung 850 EVO 500GB WD Red 3TB 2.5in HGST 500GB 
CoolingCoolingCoolingCooling
XSPC Rasa Dual Bay Reservoir | D5 XSPC RX360 Radiator EK Supremacy EVO | Red XSPC Photon 270 Reservoir 
CoolingOSMonitorPower
Alphacool UT60 280MM Radiator Windows 10 Pro x64 2 x Dell U2515H @ 75Hz Seasonic 1250XM 
Case
Corsair Graphite 780T 
CPUMotherboardGraphicsRAM
Intel Core i7 2700k | 48x | 1.328v Asrock Fatal1ty z77 Professional Asus DCUII GTX 670 | 2GB | 1254Mhz | 3.48Ghz  8GB Mushkin BL DDR3 | 2133Mhz | 1.5v 
Hard DriveHard DriveCoolingOS
Samsung 830 128GB  3x Seagate NL35 400GB 7200rpm XSPC Rasa Raystorm Extreme RX360 D5 Windows 10 Pro 
MonitorPowerCase
LG 23" 1080p IPS Corsair AX750 80+ Gold NZXT Source 210 Elite 
  hide details  
Reply
x99 Liquidx
(17 items)
 
Sandy z77 Pro
(11 items)
 
 
CPUMotherboardGraphicsRAM
Intel i7-6800k| 4.2Ghz | 1.291v ASRock x99 Professional Fatal1ty / 3.1 EVGA Titan X | EK-FC Copper | EK Backplate 32Gb Corsair Vengeance RGB DDR4 3467Mhz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 PRO 512GB Samsung 850 EVO 500GB WD Red 3TB 2.5in HGST 500GB 
CoolingCoolingCoolingCooling
XSPC Rasa Dual Bay Reservoir | D5 XSPC RX360 Radiator EK Supremacy EVO | Red XSPC Photon 270 Reservoir 
CoolingOSMonitorPower
Alphacool UT60 280MM Radiator Windows 10 Pro x64 2 x Dell U2515H @ 75Hz Seasonic 1250XM 
Case
Corsair Graphite 780T 
CPUMotherboardGraphicsRAM
Intel Core i7 2700k | 48x | 1.328v Asrock Fatal1ty z77 Professional Asus DCUII GTX 670 | 2GB | 1254Mhz | 3.48Ghz  8GB Mushkin BL DDR3 | 2133Mhz | 1.5v 
Hard DriveHard DriveCoolingOS
Samsung 830 128GB  3x Seagate NL35 400GB 7200rpm XSPC Rasa Raystorm Extreme RX360 D5 Windows 10 Pro 
MonitorPowerCase
LG 23" 1080p IPS Corsair AX750 80+ Gold NZXT Source 210 Elite 
  hide details  
Reply
post #3 of 20
I've notice that if you have C1E & EIST, and/or speed step, and then leave the C state on auto, I also have problems.

But once I choose C1, C3, or C6, instead of Auto, everything works fine.
Game Killer
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 990 extreme @ 4.2GHz ASRock X58 Extreme MSI GTX-580 lightning G.Skill Ripjaws X DDR3-2000 9-9-9-24 
Hard DriveHard DriveOptical DriveCooling
Intel 510 250Gb SSD WD RE4 250Gb x 4 Raid-0 Plextor DVR 880SA VenomousX 
OSKeyboardPowerCase
W7 Razor Lycosa PC power & cooling 950 CM ATCS-840 
AudioOther
SB Xf-i Xtreme Professional, Z2300 speakers WD 1Tb external SATA II 64Mb cache HD 
  hide details  
Reply
Game Killer
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 990 extreme @ 4.2GHz ASRock X58 Extreme MSI GTX-580 lightning G.Skill Ripjaws X DDR3-2000 9-9-9-24 
Hard DriveHard DriveOptical DriveCooling
Intel 510 250Gb SSD WD RE4 250Gb x 4 Raid-0 Plextor DVR 880SA VenomousX 
OSKeyboardPowerCase
W7 Razor Lycosa PC power & cooling 950 CM ATCS-840 
AudioOther
SB Xf-i Xtreme Professional, Z2300 speakers WD 1Tb external SATA II 64Mb cache HD 
  hide details  
Reply
post #4 of 20
I have no issues with idle anymore, all I had to do was enable C1E & Speedstep (EIST too - mine is on though I'm not sure there is a bios setting for it).

I manual turned it on in bios, not auto but ON. I manually turned off C3 and C6.
    
CPUMotherboardGraphicsGraphics
Intel Core i5 2500K P8P67 PRO NVIDIA GeForce GTX 470 NVIDIA GeForce GTX 470 
GraphicsRAMRAMRAM
NVIDIA GeForce 9800 GT G-Skill A-Data G-Skill 
RAMHard DriveOptical DriveOS
A-Data Crucial M4 64GB + 1TB F3 Spinpoint $155 LS/DL DVD RW $?? Windows 8 64-bit "Epic Registry" Edition 
MonitorPowerCase
ASUS 21.5 1920x1080 2ms $135 CORSAIR HX850 $120 Mother Earth $free 
  hide details  
Reply
    
CPUMotherboardGraphicsGraphics
Intel Core i5 2500K P8P67 PRO NVIDIA GeForce GTX 470 NVIDIA GeForce GTX 470 
GraphicsRAMRAMRAM
NVIDIA GeForce 9800 GT G-Skill A-Data G-Skill 
RAMHard DriveOptical DriveOS
A-Data Crucial M4 64GB + 1TB F3 Spinpoint $155 LS/DL DVD RW $?? Windows 8 64-bit "Epic Registry" Edition 
MonitorPowerCase
ASUS 21.5 1920x1080 2ms $135 CORSAIR HX850 $120 Mother Earth $free 
  hide details  
Reply
post #5 of 20
So your C state will default to C1

I have to pick one or the other, if I leave C state on auto, it gets muffed up.

Edit:
Probably because of my cheep motherboard!
Game Killer
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 990 extreme @ 4.2GHz ASRock X58 Extreme MSI GTX-580 lightning G.Skill Ripjaws X DDR3-2000 9-9-9-24 
Hard DriveHard DriveOptical DriveCooling
Intel 510 250Gb SSD WD RE4 250Gb x 4 Raid-0 Plextor DVR 880SA VenomousX 
OSKeyboardPowerCase
W7 Razor Lycosa PC power & cooling 950 CM ATCS-840 
AudioOther
SB Xf-i Xtreme Professional, Z2300 speakers WD 1Tb external SATA II 64Mb cache HD 
  hide details  
Reply
Game Killer
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 990 extreme @ 4.2GHz ASRock X58 Extreme MSI GTX-580 lightning G.Skill Ripjaws X DDR3-2000 9-9-9-24 
Hard DriveHard DriveOptical DriveCooling
Intel 510 250Gb SSD WD RE4 250Gb x 4 Raid-0 Plextor DVR 880SA VenomousX 
OSKeyboardPowerCase
W7 Razor Lycosa PC power & cooling 950 CM ATCS-840 
AudioOther
SB Xf-i Xtreme Professional, Z2300 speakers WD 1Tb external SATA II 64Mb cache HD 
  hide details  
Reply
post #6 of 20
But people are generally saying those C-states are what eliminates the idle BSODs.
Revolution
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 2600K @ 4.5ghz ASRock P67 Extreme4 Galaxy GeForce GTX 680 8GB G.Skill DDR3-1600 
Hard DriveOSMonitorKeyboard
1xOWC 120GB SSD + 1xWD 1TB + 1x WD 640GB Windows 7 64bit HannsG HD281D Filco Linear Force 
PowerCaseMouseAudio
Seasonic X-850 Corsair 600T Logitech G9 FiiO E9 + HiFiMan HE-300 
  hide details  
Reply
Revolution
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 2600K @ 4.5ghz ASRock P67 Extreme4 Galaxy GeForce GTX 680 8GB G.Skill DDR3-1600 
Hard DriveOSMonitorKeyboard
1xOWC 120GB SSD + 1xWD 1TB + 1x WD 640GB Windows 7 64bit HannsG HD281D Filco Linear Force 
PowerCaseMouseAudio
Seasonic X-850 Corsair 600T Logitech G9 FiiO E9 + HiFiMan HE-300 
  hide details  
Reply
post #7 of 20
I switched mine around a bit, and set it as BallaTheFeared described.
Enabled is C1E & Speed Step
C state is disabled

I'll run it that way for a while and see what happens with my rig.
Game Killer
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 990 extreme @ 4.2GHz ASRock X58 Extreme MSI GTX-580 lightning G.Skill Ripjaws X DDR3-2000 9-9-9-24 
Hard DriveHard DriveOptical DriveCooling
Intel 510 250Gb SSD WD RE4 250Gb x 4 Raid-0 Plextor DVR 880SA VenomousX 
OSKeyboardPowerCase
W7 Razor Lycosa PC power & cooling 950 CM ATCS-840 
AudioOther
SB Xf-i Xtreme Professional, Z2300 speakers WD 1Tb external SATA II 64Mb cache HD 
  hide details  
Reply
Game Killer
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 990 extreme @ 4.2GHz ASRock X58 Extreme MSI GTX-580 lightning G.Skill Ripjaws X DDR3-2000 9-9-9-24 
Hard DriveHard DriveOptical DriveCooling
Intel 510 250Gb SSD WD RE4 250Gb x 4 Raid-0 Plextor DVR 880SA VenomousX 
OSKeyboardPowerCase
W7 Razor Lycosa PC power & cooling 950 CM ATCS-840 
AudioOther
SB Xf-i Xtreme Professional, Z2300 speakers WD 1Tb external SATA II 64Mb cache HD 
  hide details  
Reply
post #8 of 20
Thread Starter 
Just wanted to update. So far so good, put it through a lot of hours browsing the internet. Needs more testing for sure so I'm not convinced yet but all of the "idle" bsods I had came pretty quickly before - as long as I was using Firefox or something - so I'm hoping its fixed now.

I'm now checking to see if I'm Prime stable because I have not yet proven that, so I might need another tick of voltage for that. 10 hours in at the moment.

soldierblue - my guess would be those people previously had C1E & EIST disabled and THAT was the culprit, not the lower C-states. But I really don't have any proof yet.... need more people to try these things, time will tell I guess. But yeah I hear a lot of people end up having problems disabling EIST & C1E on Sandy Bridge.... and its just my theory that the other C states aren't as important (at least probably not C6). By the way, I'm pretty sure that EIST needs C1E enabled to work properly, just based on what C1E does.

EDIT: removed a different example because I am not really sure.
Edited by donkrx - 7/31/11 at 2:03am
    
CPUMotherboardGraphicsRAM
i5-2500K [24/7: 4.9ghz 1.47v] ASRock P67 Extreme 4 (B3) EVGA Geforce 570 [890/2200 1.1v] G.Skill Ripjaws 2x4GB 1600Mhz 
Hard DriveMonitorPowerCase
WD Caviar Black 1TB HP f2105 1680x1050 Corsair TX750 V2 (backup Antec BP550W) Antec 902 
Mouse
Logitech G500 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5-2500K [24/7: 4.9ghz 1.47v] ASRock P67 Extreme 4 (B3) EVGA Geforce 570 [890/2200 1.1v] G.Skill Ripjaws 2x4GB 1600Mhz 
Hard DriveMonitorPowerCase
WD Caviar Black 1TB HP f2105 1680x1050 Corsair TX750 V2 (backup Antec BP550W) Antec 902 
Mouse
Logitech G500 
  hide details  
Reply
post #9 of 20
i got idle bsod's whilst using offset voltage. and yes, not enough voltage was the reason i bsod. i assumed that because i was 1.310v stable with manual voltage, that i could just play around with the offset until it matched - wrong. it needed an extra 0.03v and the c states turned off before it stopped bsod'ing and passed prime blend.

make sure your rig passes prime blend if it's bsod'ing with c states (mine never stopped bsod'ing until it did), with manual voltage the voltage doesn't go down for me on sandybridge, so you must be using offset? give it more volts man
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
2500k @ 4.5/4ghz depending on weather and/or mood P67 SABERTOOTH B3 XFX HD5850 @ 820/1125 2x2gb g.skill ripjawsX 1600mhz 
Hard DriveMonitorKeyboardPower
64gb Corsair SSD, 1tb Samsung F4 28" Hanns.G 1920x1200 Microsoft SideWinder X4 600w OCZ gameXstream2 
Mouse Pad
Razer Sphex 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
2500k @ 4.5/4ghz depending on weather and/or mood P67 SABERTOOTH B3 XFX HD5850 @ 820/1125 2x2gb g.skill ripjawsX 1600mhz 
Hard DriveMonitorKeyboardPower
64gb Corsair SSD, 1tb Samsung F4 28" Hanns.G 1920x1200 Microsoft SideWinder X4 600w OCZ gameXstream2 
Mouse Pad
Razer Sphex 
  hide details  
Reply
post #10 of 20
Thread Starter 
Well I got over 16 hours into Prime Blend with 7 of my 8GB of RAM in use, and blue screened. It was the 0x124 error though, not 0x1E or 0x3B like I would get for the light-load bsod's.

I honestly don't really think I need more voltage. 16 hours Prime blend high resource, 8 hours OCCT high priority (btw that was at .005v LESS than the Prime test).. probably enough.

Quote:
Originally Posted by Roksonixx View Post
i got idle bsod's whilst using offset voltage. and yes, not enough voltage was the reason i bsod. i assumed that because i was 1.310v stable with manual voltage, that i could just play around with the offset until it matched - wrong. it needed an extra 0.03v and the c states turned off before it stopped bsod'ing and passed prime blend.

make sure your rig passes prime blend if it's bsod'ing with c states (mine never stopped bsod'ing until it did), with manual voltage the voltage doesn't go down for me on sandybridge, so you must be using offset? give it more volts man
With manual voltage you are specifying a FIXED voltage for the CPU, some mobos call it "Fixed" like on mine. IMO "Fixed" makes more sense but that's beside the point.

With Offset voltage, your voltage can drop and it depends somewhat on C-states from what I understand. EIST I believe uses C1E to lower clock speeds and reduce voltages, but I wouldn't be surprised if EIST has the capability to do the same. Anyway, the point is, if you have any C2-C6 enabled the voltage can drop further. C6 can drop your core voltage to 0.000v. All I am saying is if you appear stable in Prime Blend, but then bsod at idle, try disabling C-states.

Yes you can also add Vcore and solve it too. I admitted that, but the problem is that by adding Vcore under the OFFSET method, you're going to be giving yourself very little voltage when you need it. Try adding 0.05v to your Offset voltage, with C3 and C6 on (if you can only use one use C6), and then go into Windows and see how much you gained on your idle voltage.

For me, going from stock 1.280 to 1.380 (100mv), I only gained 40mv on my idle voltage (which changed from 0.960 to 1.000).

When I disabled C3 and C6 and Package C-state support, it went up from 1.000 to 1.040.

Do whatever you guys want, I'm just suggesting an alternative thats working for me and keeping my load temps/voltages down.

EDIT: had extra text I forgot to delete after editing.
Edited by donkrx - 7/31/11 at 12:51pm
    
CPUMotherboardGraphicsRAM
i5-2500K [24/7: 4.9ghz 1.47v] ASRock P67 Extreme 4 (B3) EVGA Geforce 570 [890/2200 1.1v] G.Skill Ripjaws 2x4GB 1600Mhz 
Hard DriveMonitorPowerCase
WD Caviar Black 1TB HP f2105 1680x1050 Corsair TX750 V2 (backup Antec BP550W) Antec 902 
Mouse
Logitech G500 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5-2500K [24/7: 4.9ghz 1.47v] ASRock P67 Extreme 4 (B3) EVGA Geforce 570 [890/2200 1.1v] G.Skill Ripjaws 2x4GB 1600Mhz 
Hard DriveMonitorPowerCase
WD Caviar Black 1TB HP f2105 1680x1050 Corsair TX750 V2 (backup Antec BP550W) Antec 902 
Mouse
Logitech G500 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › Idle BSODs and C-States