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Overclock Corsair DDR2 5400 C4's

post #1 of 16
Thread Starter 
currently at 800Mhz 5-5-5-15 1:1 using 2.25V, how high can these rams go without killing it? is 2.25V on these rams ok? cause i dont even know whats the stock voltage on these rams.
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post #2 of 16
I have the same ones as you. I have never had them up that high. Stock volts should be 1.9V at 667/675. I am not sure the "max" volts on them though. Impressive RAM OC there!
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post #3 of 16
Thread Starter 
thanks for the reply, i just put the volt down to 2.00V and its still running fine so i will keep it at that.
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post #4 of 16
I think somewhere on Corsair's website it says that max recommended voltage is 2.1v. Ill try to dig up the link.

Ya here it is:

Testing parameters for Twinx/XMS2-5400C4:
CM2X256-5400C4 Data Sheet
CM2X512-5400C4 Data Sheet
TWIN2X1024-5400C4 Data Sheet
Motherboard make and model: ABIT AA8 Durramax and/or Asus P5AD2 Premium
Each pair is tested and packaged together using the following settings:
CPU External Frequency: Manually set to 250MHz
DDR2 SDRAM Clock: Manually set to 533MHz
DRAM Timing Selectable: Auto Yields the following timings
SDRAM CAS Latency: 4T
SDRAM RAS to CAS Delay (tRCD): 4T
SDRAM Row Precharge (tRP): 4T
SDRAM Active to Precharge Delay (tRAS): 12T
DDR2 SDRAM Voltage: 1.9
NB Voltage 1.9 Volts (On Abit AA8 Only)
All other settings are motherboard defaults.
Maximum DDR2 recommended VDIMM: 2.1 Volts

This was found at: http://www.houseofhelp.com/forums/sh...ad.php?t=52351
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post #5 of 16
2.3V should be the max without active cooling.
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post #6 of 16
Quote:
Originally Posted by laziboi
currently at 800Mhz 5-5-5-15 1:1 using 2.25V
Here are mine with a 2.20v:





I would use a 2.30v but my CPU won't go any higher. Also, update your BIOS to the 0711.
post #7 of 16
Thread Starter 
thanks for the replys!!!

Nasgul: people are telling me 1:1 is faster but loosening timings are slower which mine is at 5-5-5-15 so will it be better for me to keep it at 1:1 800Mhz 5-5-5-15 or overclock my cpu more and do a 2:3 442Mhz 4-4-4-8 @ 2.2V like yours?
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Intel Core 2 Duo E6300 Asus P5B DLX WIFI (0614) HIS Radeon X1800GTO 1GB 5400 Corsair XMS2 
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250GB Maxtor SATAII Windows XP Pro + SP2 17" Benq FP71G+ Logitech 
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post #8 of 16
If you're going for a 1:1 ratio (which I'll never use nor recommend), then you can use the 4-4-4-8 timings and a 2.1v as max. I only gave mine a 2.2v because mine are running at 442mhz, up from 333mhz and the 1.9v stock.

But you need to get out of the 5-5-5-15 immediately IMO.
post #9 of 16
Thread Starter 
so i just go into bios and leave cpu speed at 400x7 1.400V and set the memory voltage to 2.1, go into the chipset section and set...

DRAM CAS# [3]
DRAM RAS# To CAS# Delay [3]
DRAM RAS# Precharge [3]
DRAM RAS# Activate To Precha [8]
DRAM Write Recovery Time [6] <- DEFAULT
DRAM TRFC [42] <- DEFAULT
DRAM TRRD [10] <- DEFAULT
Rank Write To Read Delay [10] <- DEFAULT
Read To Precharge Delay [10] <- DEFAULT
Write To Precharge Delay [10] <- DEFAULT
My System
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Intel Core 2 Duo E6300 Asus P5B DLX WIFI (0614) HIS Radeon X1800GTO 1GB 5400 Corsair XMS2 
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My System
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CPUMotherboardGraphicsRAM
Intel Core 2 Duo E6300 Asus P5B DLX WIFI (0614) HIS Radeon X1800GTO 1GB 5400 Corsair XMS2 
Hard DriveOSMonitorKeyboard
250GB Maxtor SATAII Windows XP Pro + SP2 17&quot; Benq FP71G+ Logitech 
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post #10 of 16
Thread Starter 
woohoo updated to the 0711 bios and i dont get the double restart problem no more! thanks for telling me to update Nasgul!
My System
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Intel Core 2 Duo E6300 Asus P5B DLX WIFI (0614) HIS Radeon X1800GTO 1GB 5400 Corsair XMS2 
Hard DriveOSMonitorKeyboard
250GB Maxtor SATAII Windows XP Pro + SP2 17&quot; Benq FP71G+ Logitech 
PowerCaseMouse
Antec NeoHe 550W Lian Li PC71 Razer 
  hide details  
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core 2 Duo E6300 Asus P5B DLX WIFI (0614) HIS Radeon X1800GTO 1GB 5400 Corsair XMS2 
Hard DriveOSMonitorKeyboard
250GB Maxtor SATAII Windows XP Pro + SP2 17&quot; Benq FP71G+ Logitech 
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Antec NeoHe 550W Lian Li PC71 Razer 
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