Resume from standby problem

[Motosno]

Mobo - ASUS P7P55D-E
RAM - G-Skill F3-12800CL7Q-8GBECO
CPU - Intel i7 860
BIOS - AM 0610 (latest)
PSU - Corsair 650w
Windows 7 pro. X64

My computer wouldn't resume from standby (S3) with all 4 sticks installed.
By noticing ASUS board POST state LED checking key components,system freezes on resuming cycle, with
DRAM LED staying lighted, telling me the problem should be memory related.

So, swapping sticks and using different slots I discovered the problem is coming from one stick. The system
doesn't resume when this stick is installed in any slot.

Otherwise my system is running smoothly and fast with 2 or 4 modules
(Windows experience index of 7.6 with 2 sticks and 7.5 with 4 sticks).Memtest reveals no fault.

Is that behaviour unusual? I'm wondering if I should RMA my whole kit or only 2 sticks. How important is the
use of a 4 modules kit vs 2 X 2 modules?


For information, the two settings shown below provide me with normal stable operation, apart from standby.
issue.



AI Overclock Tuner - XMP (Correct SDP values shown)
CPU Ratio Setting - Auto
BCLK Frequency - 133
DRAM Frequency - DDR3-1600MHz
QPI Frequency - Auto


DRAM Timing Control (submenu)
CAS Latency - 7
RAS to CAS Delay - 8
RAS PRE Time - 7
RAS ACT Time - 24
tRFC - Auto (88)

DRAM Voltage - 1.35v
CPU PLL Voltage - Auto (1.8v)
DRAM Timing mode - 2N
_____________________________ ______________


AI Overclock Tuner - Manual
CPU ratio setting - Auto
Intel SpeedStep Tech - Enabled
Intel TurboMode Tech - Enabled
BCLK Frequency - 133
DRAM Frequency - DDR3-1600MHz
PCIE Frequency - 100
OC Tuner - Good Performance

DRAM Timing Control (submenu)
(1st information 7-8-7-24-5-88-12-8-24)
CAS Latency - 7
RAS to CAS Delay - 8
RAS PRE Time - 7
RAS ACT Time - 24
Ref Cycle Time - 88
DRAM Timing Mode - 2N

CPU Voltage Mode - Offset
DRAM Voltage - 1.35v


All others AUTO

Any comments?

[GSKILL TECH]

If one module is causing those problems, then you will need to send them in for new replacements. I would suggest sending the entire kit since they are matched to operate together. But if you can't go without memory, then simply send back the ones you think are defective.

WEI can decrease with 4 modules since it places more stress on the memory controller.

Thank you
GSKILL TECH

[Motosno]

Resume from standby problem

Thanks for your answer. I will have to send half a kit for replacement.

[Motosno]

At last

Received the replacements modules yesterday. Now everything works fine. No more stand-by issues and can run 8 Gig using XMP settings. Memtest OK.

[GSKILL TECH]

Fantastic, enjoy!

Thank you
GSKILL TECH