Problematic X48T-DQ6 Overclock

Celox · #1 14-02-2009, 13:53

Hi there,

its been a while since my last post

last time i had problems with a faulty battery holder.
RMA'd my board and upgraded a few things in the past months. Went back for auto-settings as i barely had time to play with oc'ing. Now that im back to squeeze more performance out of my board. I running into a weird problem.

Im having problems to keep my overclock stable.
I've been reading forums (mushkin, gigabyte,oc'er forum, guides etc) for weeks now without luck.

I hope someone has got an idea whats keeping it back.

First off my spec:
CPU: Intel Core 2 Quad Q9550
MB: X48T-DQ6 F5 Bios
RAM: 4x Mushkin 996601 (8GB RAM) XP3-12800 DDR3 - Mushkin Enhanced
CPU Cooler: Xigmatek HDT-S1283
Case Coolers: 5x Scythe STREAM SY1225SL12M @720rpm
Case: Antec 182p
GPU: ATI Radeon 4870 512MB (not oc'd)
HDD: SATA WD Velociraptor (GLFS) 300GB @ ICH9
HDD: SATA Seagate 1TB @ ICH9
PSU: Corsair HX620W

Monitoring done with Scythe Kaze Master and CoreTemp
Stability Test done with memtest86+ and Prime95 64bit
OS: Windows Vista Ultimate 64bit

My problem is that once i overclock it and run a Prime95 for over 12hours+ stable without any issues. On the next day i startup my rig when i get from work and do simple i-net researches and watching video clips and short avi's my system freezes and cracking sounds appears out of my headphones.

Why is it stable for heavy processing on one day and on the other day it hangs on simple tasks?

Code:

Robust Graphics Booster___________ [Standard]
CPU Clock Ratio ____________ [8]
Fine Clock Ratio ____________[0.5]
CPU Host Clock Control_ [Enabled]
CPU Host Frequency (MHz)__________ [400]
PCI Express Frequency (Mhz)_______ [100]
C.I.A. 2__________________________ [Disabled]
Performance Enhance________________[Standart]
System Memory Multiplier____(SPD)__[4.00C]
Memory Frequency (Mhz)_____________1600
DRAM Timing Selectable_______ SPD __ [Manual]

CAS Latency Time________________ 7
Dram RAS# to CAS# Delay_________ 7
Dram RAS# Precharge Delay_______6
Precharge Delay (tRAS)__________ 18

ACT to ACT Delay (tRRD)_________ 5
Rank Write to READ Delay________ 10
Write to Precharge Delay_________ 24
Refresh to ACT Delay______________ 60
Read to Precharge Delay__________ 8
Static tRead Value_______________[Auto]
 Static tRead Phase Adjust________ [Auto]
Command Rate(CMD)_________________[2T]

CPU/PCIEX Clock Driving Control [800mV]
CPU Clock Skew Control [normal]
GMCH Clock Skew Control [Normal]

System Voltage Control____ [Manual]
DDR2 OverVoltage Control__ [+0.40V]
PCI-E OverVoltage Control_ [+0.10V]
FSB OverVoltage Control___ [+0.10V]
(G)MCH OverVoltage Control [+0.250V]
Loadline Calibration_______[Disabled]
CPU Voltage Control_______ [1.28750V]

CPU settings:
No-Execute Memory Protect [Enabled]
CPU Enhance Halt (C1E) [Disabled]
CPU Thermal Monitor [Enabled]
CPU EIST Function [Disabled]
Virtual. Tech [Enabled] (Im running multiple VMWare Workstation's for research purpose, im a systembuilder/system integrator for a living.)

I set my CPU Voltage Control to 1.28750V as i get a correct Core Voltage off 1.232-1.248 at Idle. Which is my VID 1.2500V.

PS: Just had the freeze/cracking sound/need to reset, while writing this post. again...

supershanks · #2 16-02-2009, 20:39

When you say you've run Prime , what did you run Blend ?
Freezing like that is often due to tRFC (Refresh to ACT Delay) being too tight. try using Memset to view your SPD Check what the trfc value is. Or try inctreasding it from 60 to 62 or higher and see if the error recurrs.

memtest86+ isn'y always the best tool to check Ram, see Memtest HCI & the link Memtest86+ v Memtest HCI
.

Classicman · #3 18-02-2009, 20:40

Adjust the following settings and see if that works for you.

CPU Host Frequency (MHz)_________[412]
System Memory Multiplier_(SPD)___[4.00B]

CAS Latency Time_________________8
Dram RAS# to CAS# Delay__________8
Dram RAS# Precharge Delay________8
Precharge Delay (tRAS)___________24

ACT to ACT Delay (tRRD)__________4
Rank Write to READ Delay_________8
Write to Precharge Delay_________12
Refresh to ACT Delay_____________72
Read to Precharge Delay__________6
Static tRead Value_______________8
Static tRead Phase Adjust________[Auto]
Command Rate(CMD)________________[2T]

FSB OverVoltage Control__________[+0.20V]
(G)MCH OverVoltage Control_______[Normal]
Loadline Calibration_____________[Enable]
CPU Voltage Control______________[1.30]

Qu4k3r · #4 30-06-2009, 23:55

Quote:

Originally Posted by Celox

...

My problem is that once i overclock it and run a Prime95 for over 12hours+ stable without any issues. On the next day i startup my rig when i get from work and do simple i-net researches and watching video clips and short avi's my system freezes and cracking sounds appears out of my headphones.

Why is it stable for heavy processing on one day and on the other day it hangs on simple tasks?

I have exactly the same problem but my cpu is C2D E7200.

Celox, did you solve this problem?

Quote:

Originally Posted by supershanks

When you say you've run Prime , what did you run Blend ?
Freezing like that is often due to tRFC (Refresh to ACT Delay) being too tight. try using Memset to view your SPD Check what the trfc value is. Or try inctreasding it from 60 to 62 or higher and see if the error recurrs.

memtest86+ isn'y always the best tool to check Ram, see Memtest HCI & the link Memtest86+ v Memtest HCI.

I always run Prime 95 blend.
Initially tRFC was set to auto (Memset shows it at 72), then I tried setting it to 82, but it was unsuccessfull.-

Any sugestion?

supershanks · #5 01-07-2009, 00:55

what Static tRead Value are you using & what's ram speed ?

Qu4k3r · #6 01-07-2009, 01:06

tRFC=82
ram speed: 1600MHz 8-8-8-24-2T @1.95V

I tried with Static tRead Value (Perfomance Level) set to 8 & 9, but without succeed.-

supershanks · #7 04-07-2009, 21:10

I'm not sure what chips your ram uses it might need higher trfc, I know some Clunk and I tried a while back neded a Trfc value that exceeded the highest bios option

. Try tRFC or 95 and/or Static tRead Value of 10.