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MoBo : ASUS P8P67 PRO (BIOS ver. 1204)
RAM : G.Skill F3-12800CL7D-4GBECO (2x2GB kit)
CPU : Intel Core i5-2500K
PSU : Seasonic M12II-620 Bronze
VGA : ASUS ENGTX460 DirectCu/2DI/1GD5
OS : Windows 7 Ultimate 64-bit
The Problem:
The F3-12800CL7D-4GBECO memory kit spec stated DDR3-1600, 7-8-7-24, 1.35V. However, it seems that I cannot run my memory module in that spec. In the P8P67 PRO BIOS, the memory settings is as follows:
(Under EFI BIOS Utility - Advanced Mode - Ai Tweaker)
Target CPU Turbo-Mode Speed : 3700 MHz
Target DRAM Speed : 1333 MHz
Ai Overclock Tuner : X.M.P.
X.M.P. DDR3-1600 7-8-7-24-2N-1.35V : Profile #1
BCLK/PEG Frequency : 100.0
Turbo Ratio : Auto
Internal PLL Overvoltage : Auto
Memory Frequency : Auto
EPU Power Saving Mode : Enable
EPU Setting : Auto
DRAM Voltage : 1.35000
(Under Ai Tweaker\DRAM Timing Control>)
DRAM CAS# Latency : 7
DRAM RAS# to CAS# Delay : 8
DRAM RAS# PRE Time : 7
DRAM RAS# ACT Time : 24
DRAM COMMAND Mode : 2
(Other timings using default setting which is Auto)
Under OS, CPU-Z 1.56 stated my memory spec as follows:
I've only managed to get the reported value as Total Memory 4096 MB, Speed 1333 MHz (in the BIOS settings and POST message). Isn't it correct that memory frequency 666.7 MHz means that the memory speed is actually 1333 MHz? I cannot run it in Speed 1600 MHz. If I change the above Memory Frequency into DDR3-1600, the computer refuse to boot and the MemOK! LED in my motherboard lit up. If this happen, I had to push the MemOK! button until the motherboard reset the memory setting to be able to boot and it usually return to 1333/1348 MHz.
If I set the Ai Overclock Tuner into Auto, and Memory Frequency DDR3-1600, my computer is able to boot, but with the timings set into 9-9-9.
So my question is: Is this normal? Do I make a mistake setting my BIOS? How can I get 1600 MHz operating frequency with 7-8-7 timings and 1.35V? Is this has anything to do with EPU Power Saving feature (which I assumed to downgrade my memory to lower spec to save power consumption)?
Any help would be appreciated. Thx.
EDIT: Oh, and I'm not planning to OC'ing my computer.
RAM : G.Skill F3-12800CL7D-4GBECO (2x2GB kit)
CPU : Intel Core i5-2500K
PSU : Seasonic M12II-620 Bronze
VGA : ASUS ENGTX460 DirectCu/2DI/1GD5
OS : Windows 7 Ultimate 64-bit
The Problem:
The F3-12800CL7D-4GBECO memory kit spec stated DDR3-1600, 7-8-7-24, 1.35V. However, it seems that I cannot run my memory module in that spec. In the P8P67 PRO BIOS, the memory settings is as follows:
(Under EFI BIOS Utility - Advanced Mode - Ai Tweaker)
Target CPU Turbo-Mode Speed : 3700 MHz
Target DRAM Speed : 1333 MHz
Ai Overclock Tuner : X.M.P.
X.M.P. DDR3-1600 7-8-7-24-2N-1.35V : Profile #1
BCLK/PEG Frequency : 100.0
Turbo Ratio : Auto
Internal PLL Overvoltage : Auto
Memory Frequency : Auto
EPU Power Saving Mode : Enable
EPU Setting : Auto
DRAM Voltage : 1.35000
(Under Ai Tweaker\DRAM Timing Control>)
DRAM CAS# Latency : 7
DRAM RAS# to CAS# Delay : 8
DRAM RAS# PRE Time : 7
DRAM RAS# ACT Time : 24
DRAM COMMAND Mode : 2
(Other timings using default setting which is Auto)
Under OS, CPU-Z 1.56 stated my memory spec as follows:
I've only managed to get the reported value as Total Memory 4096 MB, Speed 1333 MHz (in the BIOS settings and POST message). Isn't it correct that memory frequency 666.7 MHz means that the memory speed is actually 1333 MHz? I cannot run it in Speed 1600 MHz. If I change the above Memory Frequency into DDR3-1600, the computer refuse to boot and the MemOK! LED in my motherboard lit up. If this happen, I had to push the MemOK! button until the motherboard reset the memory setting to be able to boot and it usually return to 1333/1348 MHz.
If I set the Ai Overclock Tuner into Auto, and Memory Frequency DDR3-1600, my computer is able to boot, but with the timings set into 9-9-9.
So my question is: Is this normal? Do I make a mistake setting my BIOS? How can I get 1600 MHz operating frequency with 7-8-7 timings and 1.35V? Is this has anything to do with EPU Power Saving feature (which I assumed to downgrade my memory to lower spec to save power consumption)?
Any help would be appreciated. Thx.
EDIT: Oh, and I'm not planning to OC'ing my computer.
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