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No C-States = Lower performance, C-States = Unstable, Help

post #1 of 4
Thread Starter 
I need to disable C states or else I get freezing/lock-up with an annoying buzz/squeel in Battlefield 4 with C-States on. Everything else is stable with C-States and I mean everything, Prime95, Wprime, HyperPi, ASUS Relbench tests and the stress, Aida benchmarks and stress, Performance Test, and same with memory, plus HCI Memtest and the newest version of GoldMem...

Here is where it gets really weird: with C-States disabled, I seem to get very low single-threaded performance. For example:

ASUS RealBench v2.41 Image Editing
C-States On: 65 sec
C-States Off: 85 sec

Passmark Performance Test, CPU Single threaded Test:

C-States On: 17,300
C-States Off: 16,300

Cinebench OpenGL:
C-States On: 190
C-States Off: 88

Cinebench CPU (Single Core)
C-States On: 175
C-States Off: 123

Cinebench MP Ratio
C-States On: 7.6
C-States Off: 10.6


NOTE: High performance mode in Windows is always selected with min processor speed at 100%. HWmonitor always reports the cores at 4.5GHz so nothing seems to be downclocking/throttling. Temps are in the low 60s to low 70s (and always mysteriously 5-10 C hotter when C-States are off, see below).


System:
- CPU: 5930K @ 4.5 GHz @ 1.295v (also tried 1.300v and 1.305v) - Cache @ 3.5 GHz (not even stable @ 3.6 GHz, weird) @ auto voltage (1.1xxv)
- MB: ASRock X99X Killer (newest beta bios, 1.7L? Something like that)
- RAM: Crucial Ballistix Sport 4x4Gb @ 2400MHz, starting point was XMP then OC'd to 13-13-13-31-1T @ 1.36V (I believe there's still a bit more timing-OC room left)
PSU: Antec High Current Pro HCP-1200
- OS: Windows 8.1 64-Bit
- Storage: Samsung 840 Pro (OS, programs), Western Digital VelociRaptor 1TB (games), Samsung Spinpoint F3 1TB (storage),
- GPU: Nvidia GTX 780 Ti (ASUS DC2)
- Case: Cooler Master HAF 932
- CPU Cooler: Swiftech H320 push/pull
- lots of intake and exhaust fans



2. I was going to start a new thread for the following but I figured I'd include it in this one just in-case there's a connection:

I get way higher temps with C-states off, even @ idle @ a constant 1.2GHz @ 0.7xxv my idle temps are 30-35 C instead of the 20-25 C when C-States are off. Same with stress tests that place a constant, full load on all cores/threads, I get 7-10 degrees hotter temps with C-States off even though all the core/thread loads are 100%, constant, the same frequency, the same voltage, etc. How can that be??...

I never had these massive C-State on/off temp differences with my 4930K and my 2500K. My 4930K idled at 20-ish degrees regardless of wether C-states where on or off as long as the frequency, voltage, etc. were the same (power saving Windows powerplan, 1.xGHz, 0.xxxv, etc.). And same when all 6/12 cores/threads were fully and constantly loaded (eg. WPrime), I never got such temp differences with C-States on VS C-States off with those 2 CPUs.

If all the cores/threads are constantly and fully loaded hard, if all the cores are constantly pegged at 4.5Ghz, if the voltage is constantly pegged at 1.3v, then how could C-States even come into play at all, let alone dropping full & constant load temps by 7-10 degrees (compared to no C-States)??...
Edited by spin5000 - 3/29/15 at 4:25am
PC
(11 items)
 
  
CPUMotherboardGraphicsRAM
i7-5930K @ 4.5/3.3 Ghz ASRock Fatal1ty X99X Killer 2x (SLI) GTX 980 Ti @ 1450/7600 16GB (4x4GB) DDR4 2400MHz 11-11-11-24-1T 
Hard DriveCoolingOSMonitor
Sam 840 Pro 256GB, WD Vlcrptr 1TB Swiftech H320 (push/pull) Windows 8.1 64-bit 3x BenQ XL2720T 
PowerCaseAudio
Antec HCP-1200 Cooler Master HAF 932 Auzentech X-Fi Forte 7.1 
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PC
(11 items)
 
  
CPUMotherboardGraphicsRAM
i7-5930K @ 4.5/3.3 Ghz ASRock Fatal1ty X99X Killer 2x (SLI) GTX 980 Ti @ 1450/7600 16GB (4x4GB) DDR4 2400MHz 11-11-11-24-1T 
Hard DriveCoolingOSMonitor
Sam 840 Pro 256GB, WD Vlcrptr 1TB Swiftech H320 (push/pull) Windows 8.1 64-bit 3x BenQ XL2720T 
PowerCaseAudio
Antec HCP-1200 Cooler Master HAF 932 Auzentech X-Fi Forte 7.1 
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post #2 of 4
Try disabling only c7 (maybe c6 too, idk what that does)

I cannot explain your other issues if PSU is fine
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6700k Asus Maximus VIII Hero Gigabyte G1 980 Corsair LPX 2x8GB 3200c16 
Hard DriveHard DriveCoolingOS
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Insert Name Here
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6700k Asus Maximus VIII Hero Gigabyte G1 980 Corsair LPX 2x8GB 3200c16 
Hard DriveHard DriveCoolingOS
Old Seagate HDD Samsung 850 EVO Thermalright Silver Arrow SB-E SE Windows 7 Home Premium 64 bit 
MonitorKeyboardPowerCase
Asus VG248QE WASDKeyboards.com v1 semi custom w/ mx browns, ... Superflower Golden Green HX550 Air540 
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Logitech G303 Qck+ 
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post #3 of 4
Thread Starter 
Oops, forgot about the PSU...

PSU is an Antec HCP (High Current Pro) 1200.

My motherboard's C-state options:

Option 1:
C0/C1
C6 (retention)
C6 (non-retention)

Option 2, C3:
Enable
Disable

Option 3, C6:
Enable
Disable


The motherboard defaults to:
C0/C1
C3-Disabled
C6-Enabled

And the MB's overclock preset has them set to:
C6 (non-retention)
C3-Disabled
C6-Enabled

Should I enable C3 and disable C6 (opposite of default), or disable both? What about "option 1" ("C0/C1", "C6 (retention)", "C6 (non-retention)")?
Edited by spin5000 - 3/29/15 at 4:01am
PC
(11 items)
 
  
CPUMotherboardGraphicsRAM
i7-5930K @ 4.5/3.3 Ghz ASRock Fatal1ty X99X Killer 2x (SLI) GTX 980 Ti @ 1450/7600 16GB (4x4GB) DDR4 2400MHz 11-11-11-24-1T 
Hard DriveCoolingOSMonitor
Sam 840 Pro 256GB, WD Vlcrptr 1TB Swiftech H320 (push/pull) Windows 8.1 64-bit 3x BenQ XL2720T 
PowerCaseAudio
Antec HCP-1200 Cooler Master HAF 932 Auzentech X-Fi Forte 7.1 
  hide details  
Reply
PC
(11 items)
 
  
CPUMotherboardGraphicsRAM
i7-5930K @ 4.5/3.3 Ghz ASRock Fatal1ty X99X Killer 2x (SLI) GTX 980 Ti @ 1450/7600 16GB (4x4GB) DDR4 2400MHz 11-11-11-24-1T 
Hard DriveCoolingOSMonitor
Sam 840 Pro 256GB, WD Vlcrptr 1TB Swiftech H320 (push/pull) Windows 8.1 64-bit 3x BenQ XL2720T 
PowerCaseAudio
Antec HCP-1200 Cooler Master HAF 932 Auzentech X-Fi Forte 7.1 
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post #4 of 4
It is likely your asrock board they have had some issues with the new 2011 ones something about the bios not working properly with devils canyon / haswell it causes odd throttling and overall instability.
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CPUMotherboardGraphicsRAM
amd fx 9590 5.1ghz x8 asus sabertooth 990fx r2.0 Radeon R9 290X matrix platinum x3 16gb of ddr3 corsair dominator platinum1866mhz ... 
Hard DriveOptical DriveCoolingOS
2 x ocz vector 256gb raid0 128kb stripe (ocz ve... ASUS DVD rw  liquid cooled cpu and gpu's windows 7 64bit 
MonitorKeyboardPowerCase
3 x 32lcd/led 2560x1600 wolfking timberwolf 2x pc power & cooling turbo 1200w coolermaster haf 932 amd edition 
MouseMouse PadOther
steel series wow cataclysm 14button programable  wolfking sniper killer 2100 nic 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
amd fx 9590 5.1ghz x8 asus sabertooth 990fx r2.0 Radeon R9 290X matrix platinum x3 16gb of ddr3 corsair dominator platinum1866mhz ... 
Hard DriveOptical DriveCoolingOS
2 x ocz vector 256gb raid0 128kb stripe (ocz ve... ASUS DVD rw  liquid cooled cpu and gpu's windows 7 64bit 
MonitorKeyboardPowerCase
3 x 32lcd/led 2560x1600 wolfking timberwolf 2x pc power & cooling turbo 1200w coolermaster haf 932 amd edition 
MouseMouse PadOther
steel series wow cataclysm 14button programable  wolfking sniper killer 2100 nic 
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