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Intel C1E & EIST when overclocking - Page 2

Poll Results: Disable c1e & eist

 
  • 69% (37)
    I disable c1e and eist because I read about it
  • 18% (10)
    I disable c1e and eist because I had unstable oc with these options enabled
  • 11% (6)
    I always leave these options enabled because they cause any problem
53 Total Votes  
post #11 of 25
Thread Starter 
Well, I don't. I have an E5200@3.86ghz, an E5200@4.01ghz and a qx9650@4.2ghz and all those have C1E and EIST enabled, thought spread spectrum is disabled on all of them.
Pegasus
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Intel x25-m 80gB G2, Hitachi 1tB LG HL-DT-ST DVDRAM GSA-H10N Windows7 Ultimate 64bit 2x Samsung 2043NW 
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Pegasus
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Q9650 24/7 4.05ghz@1.26v Asus P5Q-E EVGA GTS450 SC sli 4gB Kingston HyperX ddr2 8500 
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Intel x25-m 80gB G2, Hitachi 1tB LG HL-DT-ST DVDRAM GSA-H10N Windows7 Ultimate 64bit 2x Samsung 2043NW 
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post #12 of 25
C1E and EIST downclocks and lower voltages when the CPU is idle. The fear is that lowered voltage may cause stability issues since the CPU is at a higher clock at idle.
Once again...
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i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
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Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
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Once again...
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i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
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Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
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post #13 of 25
#1.
FPS Gaming System
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FPS Gaming System
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i5 3570K @ 4.2GHz Gigabyte Z77M D3H MVP MSI GTX 570 8 GB 1600 MHz G.Skill 
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Crucial M4 128 GB Western Digital 500 GB Samsung X22 Superwritemaster  Alpine 11 Pro 
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Win 7 64-Bit Ultimate BenQ XL2411Z 144Hz CoolerMaster Storm QuickFire Pro Mechanical Corsair TX750 
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post #14 of 25
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post
C1E and EIST downclocks and lower voltages when the CPU is idle. The fear is that lowered voltage may cause stability issues since the CPU is at a higher clock at idle.
Bingo, only a fear. But, thought I have been overclocking for many many years, I only ever used Intel chipsets. The i920 I'm building right now, is the first Intel platform on which I am able to do sli.
Pegasus
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q9650 24/7 4.05ghz@1.26v Asus P5Q-E EVGA GTS450 SC sli 4gB Kingston HyperX ddr2 8500 
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Intel x25-m 80gB G2, Hitachi 1tB LG HL-DT-ST DVDRAM GSA-H10N Windows7 Ultimate 64bit 2x Samsung 2043NW 
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Pegasus
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Q9650 24/7 4.05ghz@1.26v Asus P5Q-E EVGA GTS450 SC sli 4gB Kingston HyperX ddr2 8500 
Hard DriveOptical DriveOSMonitor
Intel x25-m 80gB G2, Hitachi 1tB LG HL-DT-ST DVDRAM GSA-H10N Windows7 Ultimate 64bit 2x Samsung 2043NW 
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Corsair 750TX Antec Three Hundred Gamer 
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post #15 of 25
I leave both disabled, because I don't want my computer choosing when to boost my speeds up. I want it there 24/7. If anything it only saves maybe a $2-5 a month on an electric bill, lol.
RavenV2
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RavenV2
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post #16 of 25
I enable them both in the BIOS and disable at the OS level, so I can get Turbo Mode without also dropping speed. Maybe silly, but there you have it.
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Core i7 920 C0 ASUS P6T6 WS Revolution GTX 460 TR3X6G1600C8D 
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WD1001FALS SAMSUNG SH-S223F 22X DVD MULTI Corsair H50 Fedora 16 KDE x86_64 
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HP w19b Microsoft Comfort Curve Corsair CX600 Thermaltake Armor VA8003BWS 
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post #17 of 25
I hate all those power saving features in the BIOS and the OS.

If we're all about the pursuit of performance than were not thinking about saving power. Were thinking more power!!

MORE POWER!! (grunts like wild animal)
post #18 of 25
One or both of those options caused instability in my oc. After I did some high clock runs on my setup, I hit the wall and had to reset the bios. When I went back to what I had as a stable oc I had some stability issues at idle. I went back to the bios to double check all my settings and I hadn't disabled those 2 as I had previously. No problems since then. Draw your own conclusions..

Admittedly, I always disabled those options because I had read that doing so was best while oc'ing, but now I have my own reasons to do so.
FightingFish
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FightingFish
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post #19 of 25
I keep them disabled. Sure, it lowers the multiplier when I'm not using my PC, but it doesn't lower voltage which'll in turn lower temperatures/energy consumption. Correct me if I'm wrong.
Main
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E8500 @ 4.2GHz 1.360V EP45-UD3R F7A EVGA GeForce 9800 GX2 700/1750/1020 2x2GB DDR2 1066 5-5-5-15 
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Main
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E8500 @ 4.2GHz 1.360V EP45-UD3R F7A EVGA GeForce 9800 GX2 700/1750/1020 2x2GB DDR2 1066 5-5-5-15 
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post #20 of 25
C1E lowers the voltage. SpeedStep is not supposed to, at least the last time I read the docs, but apparently does anyway. Or this is a matter of some BIOSes implementing them incorrectly.
Underground
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CPUMotherboardGraphicsRAM
Core i7 920 C0 ASUS P6T6 WS Revolution GTX 460 TR3X6G1600C8D 
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WD1001FALS SAMSUNG SH-S223F 22X DVD MULTI Corsair H50 Fedora 16 KDE x86_64 
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HP w19b Microsoft Comfort Curve Corsair CX600 Thermaltake Armor VA8003BWS 
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Razer DeathAdder Black 
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Underground
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 C0 ASUS P6T6 WS Revolution GTX 460 TR3X6G1600C8D 
Hard DriveOptical DriveCoolingOS
WD1001FALS SAMSUNG SH-S223F 22X DVD MULTI Corsair H50 Fedora 16 KDE x86_64 
MonitorKeyboardPowerCase
HP w19b Microsoft Comfort Curve Corsair CX600 Thermaltake Armor VA8003BWS 
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Razer DeathAdder Black 
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