ASUS P7P55D-E LX + i5 760 Unstable - Need help

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gavenalex

Distinguished
Mar 31, 2008
4
0
18,510
Hi all,

I am having trouble getting my new build to be stable. It freezes randomly, and also blue screens.

Parts:
Asus P7P55D-E LX
i5 760
Gskill F3-12800CL7D 4Gb
Win 7 64 bit
GTX 470 video card

I think it may have something to do with the memory settings. Below is what CPU ID comes up with. The GSkill website shows that I should use CL 7-8-7-24-2N 1.6 Volts. The default values that the ASUS motherboard set-up are CL 9-9-9-24 1.50 volts. I have tried both and the result is the same, random lock-ups and very unstable. Altough it does boot to Windows with just enough time to run CPU-ID.

Thanks in advance for any help.

Chipset
-------------------------------------------------------------------------

Northbridge Intel DMI Host Bridge rev. 11
Southbridge Intel P55 rev. 06
Graphic Interface PCI-Express
PCI-E Link Width x16
PCI-E Max Link Width x16
Memory Type DDR3
Memory Size 4096 MBytes
Channels Dual
Memory Frequency 668.8 MHz (2:10)
CAS# latency (CL) 9.0
RAS# to CAS# delay (tRCD) 9
RAS# Precharge (tRP) 9
Cycle Time (tRAS) 24
Row Refresh Cycle Time (tRFC)74
Command Rate (CR) 1T
Uncore Frequency 2140.1 MHz

Memory SPD
-------------------------------------------------------------------------

DIMM # 1
SMBus address 0x50
Memory type DDR3
Module format UDIMM
Manufacturer (ID) G.Skill (7F7F7F7FCD000000)
Size 2048 MBytes
Max bandwidth PC3-10700 (667 MHz)
Part number F3-12800CL7-2GBRM
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.1
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-17-23 @ 457 MHz
JEDEC #2 7.0-7-7-20-27 @ 533 MHz
JEDEC #3 8.0-8-8-22-31 @ 609 MHz
JEDEC #4 9.0-9-9-25-34 @ 685 MHz
XMP profile XMP-1600
Specification PC3-12800
Voltage level 1.600 Volts
Min Cycle time 1.250 ns (800 MHz)
Min tRP 8.75 ns
Min tRCD 10.00 ns
Min tWR 15.00 ns
Min tRAS 30.00 ns
Min tRC 49.00 ns
Min tRFC 110.00 ns
Min tRTP 7.50 ns
Min tRRD 6.00 ns
Command Rate 2T
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 7.0-8-7-24-40-2T @ 800 MHz (1.600 Volts)

DIMM # 2
SMBus address 0x52
Memory type DDR3
Module format UDIMM
Manufacturer (ID) G.Skill (7F7F7F7FCD000000)
Size 2048 MBytes
Max bandwidth PC3-10700 (667 MHz)
Part number F3-12800CL7-2GBRM
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.1
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-17-23 @ 457 MHz
JEDEC #2 7.0-7-7-20-27 @ 533 MHz
JEDEC #3 8.0-8-8-22-31 @ 609 MHz
JEDEC #4 9.0-9-9-25-34 @ 685 MHz
XMP profile XMP-1600
Specification PC3-12800
Voltage level 1.600 Volts
Min Cycle time 1.250 ns (800 MHz)
Min tRP 8.75 ns
Min tRCD 10.00 ns
Min tWR 15.00 ns
Min tRAS 30.00 ns
Min tRC 49.00 ns
Min tRFC 110.00 ns
Min tRTP 7.50 ns
Min tRRD 6.00 ns
Command Rate 2T
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 7.0-8-7-24-40-2T @ 800 MHz (1.600 Volts)



 
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H

huangjs

Distinguished
Jun 26, 2011
1
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18,510
Did you resolve your issue?

I also have the same CPU/Motherboad set with you.

But they are pretty stable for at least 8 months.

However recently, my WinXP SP2 has caused more and more random freeze.

Even I switch to my Win7 64-bit Ultimate. The SAME thing happens!

When freezing, screen freezes, mouse pointer locks and NumLock cannot be toggled.


I don't know which part of the hardware is problematic.



 
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N

Naed74

Distinguished
Dec 24, 2011
1
0
18,510
A mate of mine is having the same problems after updating sp1 for W7 64bit. Apparently its an issue with the ASUS motherboard P7P55D-E LX and W7 64bit sp1. Last I heard was Microsoft blamed ASUS and vice versa. Therefore the issue is still unresolved!!?? I'm looking into it for him now.
 
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