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Corsair Vengeance LP 4X4G, 1866Mhz 9-11-11-28 1.6 V vs 1600Mhz 9-9-9-24 1.53V

post #1 of 3
Thread Starter 
Hi, I was attempting to overclock my 4 sticks of Corsair Vengeance 4G DDR3-1600 Cas9 1.5V Ram on my ASRock Z77 Extreme 4 board, with all Timing set to Auto.

Command Rate in both cases is 2T

First My Ram would not pass Prime Blend at 1600 Mhz 9-9-9-24 @1.5V(I would get individual core failure yet no blue screen) though it would pass Memtest86+ v4.20 without problem, so I raised the Dram Voltage to 1.53V and run Prime Blend(1hr 45 min) and Prime Custom(1 hr) Torture(14G Ram used) , passed both.

I first tried to raise the XMP profile to DDR3-1866 with the voltage unchanged(1.53V), this failed Prime Blend in 4 min.
I upped the Voltage to 1.56V, this failed Prime Blend in a few mins as well.
I upped the Voltage to 1.6V(1866Mhz 9-11-11-28 1.6 V ), this passed 30 min of Prime Blend then I shut the test off

I tried to set the timing in Bios manually(from the auto 9-11-11-28) to 9-9-9-24, you probably know what happened, this stupid move caused my computer to auto shutoff during boot.

I pressed Clear CMOS button, rebooted and went back to DDR3-1600, 9-9-9-24 at 1.53V and all is well.

My questions:
1. how much extra performance do I gain at 1866Mhz 9-11-11-28 1.6 V vs 1600Mhz 9-9-9-24 1.53V? I don't mind being a min slower in video encoding but if it affects my gaming performance I might take the 1866Mhz.

2. Is the extra Dram Voltage an issue(I hear you are fine at anything below 1.65V, but the board allows a max of 1.8V)?

3. I plan on stress testing my OCed Ram with a longer Prime Blend & Prime Custom 14G Ram run(each for an hour) and a Memtest86+ run, is this sufficient and if not what else should I do to test my Ram.

4. I hear that not OCing your Ram reduces your CPU OC ceiling by about 200 Mhz, is this true?

p.s If you have experience OCing 4 sticks of Ram, how much could you push it? Do you recon I can push mine to 2100/2133 at 1.65V?
Edited by sherlock - 9/17/12 at 6:17am
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Skylake 1080 FTW
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post #2 of 3
I would say go with the lower latency and lower voltage one, the extra mhz to 1866 won't help very much
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post #3 of 3
Thread Starter 
Quote:
Originally Posted by ShotgunBFFL View Post

I would say go with the lower latency and lower voltage one, the extra mhz to 1866 won't help very much

Could I get the Rams to stabilize at a lower timing with more voltage(say 1.65V)?
Skylake 1080 FTW
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XPS 15
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CPUMotherboardGraphicsRAM
i7-6700K  ASUS Maximus VIII Ranger EVGA 1080 FTW TridentZ DDR4-3000 
Hard DriveHard DriveHard DriveHard Drive
Samsung SM951 128GB Samsung 840 Pro 256 GB Muskin Reactor 1TB Seagate Baracuda 2TB ST2000DM001 HDD 
Hard DriveCoolingOSMonitor
Seagate Baracuda 2TB ST2000DM001 HDD Corsair H110i GT Windows 10 Pro  Acer XB321HK 32" 4K G-sync 
KeyboardPowerCaseMouse
Corsair K70 Rapid Fire EVGA SuperNova 650 P2 NZXT H440 Black Logitech G900  
Mouse PadOther
Razer Vespula CyberPower CP1500PFCLCD - PFC Sinewave UPS Syst... 
CPUMotherboardGraphicsRAM
i7-6700HQ 2.6Ghz(3.5Ghz Turbo) Dell XPS 15 Nvidia GTX 960M 8GB DDR4-2133 
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256GB PCIE SSD Windows 10 Pro 15.6" 1080p 
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Skylake 1080 FTW
(18 items)
 
XPS 15
(7 items)
 
 
CPUMotherboardGraphicsRAM
i7-6700K  ASUS Maximus VIII Ranger EVGA 1080 FTW TridentZ DDR4-3000 
Hard DriveHard DriveHard DriveHard Drive
Samsung SM951 128GB Samsung 840 Pro 256 GB Muskin Reactor 1TB Seagate Baracuda 2TB ST2000DM001 HDD 
Hard DriveCoolingOSMonitor
Seagate Baracuda 2TB ST2000DM001 HDD Corsair H110i GT Windows 10 Pro  Acer XB321HK 32" 4K G-sync 
KeyboardPowerCaseMouse
Corsair K70 Rapid Fire EVGA SuperNova 650 P2 NZXT H440 Black Logitech G900  
Mouse PadOther
Razer Vespula CyberPower CP1500PFCLCD - PFC Sinewave UPS Syst... 
CPUMotherboardGraphicsRAM
i7-6700HQ 2.6Ghz(3.5Ghz Turbo) Dell XPS 15 Nvidia GTX 960M 8GB DDR4-2133 
Hard DriveOSMonitor
256GB PCIE SSD Windows 10 Pro 15.6" 1080p 
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Overclock.net › Forums › Components › Memory › Corsair Vengeance LP 4X4G, 1866Mhz 9-11-11-28 1.6 V vs 1600Mhz 9-9-9-24 1.53V