Could use some help with further overclocking

[sophosuni]

Hi all

I have just recieved and set up my new system that was custom spec built by Vadim and am looking for some help to overclock it a bit more. It is already overclocked but I was hoping to push it a little further. Here is the spec:

Custom Fusion-LQX-Intel-775G2 system

Case:
Lian-Li V2100B Plus Black CASE (NO PSU)
Cooling:
LiquoCool Antarctic TX Extreme (CPU+Chipset+2VGA)
PSU:
Enermax Galaxy Modular 1000W PSU
Motherboard:
EVGA NF680i SLI (Bus set to 375MHz)
CPU:
Intel Core 2 Duo E6600 (set to 3375MHz)
Memory:
A-Data DDR2-1066 2x1024MB Extreme Edition Dual Channel Kit (set to 1050MHz at 5-5-15)
Graphics:
Nvidia 8800GTX 768Mb PCIe HDCP (Core set to 625MHz, Memory set to 1000MHz)
Hard Drive:
150Gb Raptor 10000 16mb E-SATA
Storage HD:
500GB WD Caviar RE2 7200 16mb Cache SATA II NCQ
Optical Drive:
Samsung SH-S183L SATA 18x DL DVDRW Black
Floppy Drive:
Mitsumi Black 1.44 FD with 7in1 card reader
Sound Card:
Creative 7.1 X-FI Fatal1ty FPS
Operating System:
Windows XP Pro SP2

I overclocked the graphics card to the settings above and may push the core further but the memory doesn’t seem to like going higher than 1000MHz for some reason. Every time I push it further artifacts start appearing on the ATI tool 3D test.

I am also looking at pushing the processor up to a proper 3400MHz and tweaking the memory to run quicker with it as at the moment it is actually running slower than its guaranteed spec.

Here are the full specs for the cooling system so you can see how complicated it is.

LiquoCool Antarctic TX Extreme (CPU+Chipset+2VGA)
This setup is an extreme performance one single, one double and one tripple 120mm radiators with

Swiftech D5 silent pump and 1/2" ID or 7/16" ID tubes that can cool the CPU, Chipset and 2 VGA's

Other components used:
Graphics Card Innovatek GPU waterblock (+ a spare one)
CPUs – Swiftech CPU waterblock.
Chipset - swiftech chipset waterblock.
Tubing: 1/2" and 7/16" ID longlife highly flexible Tygon laboratoric tubes or Danger Den Blue UV Reactive tubes.
Reservoir: Cape Coolpex 25 Pro

The liquid inside is the innovatek Protect IP that protects against rust, bacteria and has much greater heat conduction bennefits when compared to water.

Each watercooled setup is 100% tested against leaks and goes through a 24 hour 20psi air pressure before filling.

All the fans are blue LED and UV reactive from Revoltec controlled by the T-Balancer bigNG which has 4 temperature sensors.

The southbridge is cooled by a Thermalright HR-05 Chipset Heatsink.

The GPU temp at idle is 49C
The CPU temp at idle is 42C
Motherboard temp at idle is 49C
The CPU voltage is 1.5v
FSBRAM ratio is 5:7
RAM voltage is 2.36v

Can anyone give me any ideas on if its possible to get my processor up to 3.4GHz and what speed I should get the memory up to?

Also Does anyone have any idea why the 8800GTX memory doesn't like being pushed passed 1000MHz?

Thanks

 

[leSLIe]

If u want to overclock your rig a little bit higher u have to change your cooling solution, i´d recommend to you to change it to a Phase-Change refrigerator

 

[Darth Bobo]

With all that power going into the CPU you ought to get 3.6GHz from the CPU, I can run stable at 3.3GHz@1.35vCore in BIOS, 1.25vCore after vDrop and I'm running on air. I have booted into Windows (Vista) on 378x9@1.4vCore in BIOS, didn't like the temps enough to test for stability though, don't know how much vCore the E6600 needs to go to 3.6GHz, but I'd guess that 1.5vCore is enough.

 

[orion23]

Are you sure you need 1.5V on the CPU for your overclock?

1: Bring the memory to a 1:1 ratio

Disable anything Throttle or Spectrum Related, C1E, Speedstep and Thermal Control

Set your FSB and RAM to unlinked

Set your FSB to 1600 and your RAM to 800mhz

Set your RAM to the advertised Voltage and Timings.

CPU Voltage to 1.45V

FSB V to 1.4V

All other voltages leave as auto.

See how that goes, if it doesn't work, up the CPU voltage to 1.5V

 

[sophosuni]

Finally got round to doing some overclocking.

I did it in steps and got up to the following settings:

FSB: 1600
Linked - Synked
RAM: 800 - 5-5-5-15

CPU Core: 1.5v (1.47 after droop)
FSB: 1.4
RAM: 2.35
NForce MCP: 1.5 (auto)
HT NForce SPP-MCP: 1.2 (auto)

It booted into windows but only lasted 10 secs on the orthos tests before generating errors. The temps also seemed quite high according to Everest and Speedfan.

Idle
CPU = 42C
CORE 1 = 36C
CORE 2 = 36C
Motherboard = 49C

Load
CPU = 62C
CORE 1 = 58C
CORE 2 = 58C
Motherboard = 49C

At the moment I've set it to:

FSB: 1556
Unlinked
RAM: 1066 5-5-5-15

With voltages the same it runs fine but the RAM:FSB ratio is set to 15:11 according to Everest. I don't know if this is a problem or not.

Im unsure whether it was the RAM or CPU causing errors in Orthos as the CPU seemed to handle the Gromacs core test but the mixed RAM tests and small FFT test failed.

I'm also unsure as to whether I should try and reduce voltage and how I should go about it. Any comments would be appreciated.

Thanks

Hers a few pics