By Gophn

Test setup:
- Notebook: Clevo D900F (aka. Sager 9280) ….. courtesy of XoticPC.com
- CPU: Intel Core i7 975 Extreme LGA 1336 (stock is 3.33GHz)
- RAM: 6GB (3×2GB) DDR3-1333
- HDD: 640GB (2×320) 7200rpm RAID-0
- OS: Vista Ultimate 64-bit
- Cooling: all stock (air), no mods, no notebook cooler

All Stock settings:
@ 133.3 x 25 multiplier = 3333MHz

OVERCLOCKED:

@ 133.3 x 28 multiplier = 3732.4 MHz …. stable

@ 133.3 x 29 multiplier = 3865.7 MHz …. stable

…. and for the doubters..

@ 133.3 x 30 multiplier = ~4000 MHz …. not stable

As you can see the system can handle an OC up to ~4.00 GHz …. but is not really stable… almost instant BSOD’s when you try any stress tests.

Under 3.90 GHz seems to be the sweet spot and most stable.

If you are wondering about temps… here is a snap of the HWmonitor after the stress test from pushing the multiplier up 29x.

The temps are stable… but warmer than I would like it…. I will be taking apart the system to see if there can be simple improvements to improve the cooling.
___________________________________

What I used to overclock the Core i7-975 in the D900F

I will tell you what I used for the OC’ing.

Since there was no BIOS overclock options, I had to find a viable software that can do the overclocking for me.

I looked into motherboard with the Intel X58 chipset and had an overclocking utiliy.
- Intel
- Gigabyte
- EVGA
- ECS
- MSI
- ASUS
… etc.

I had 99% of failures with those desktop motherboard overclocking programs… except I found one that was viable.

EVGA E-LEET Tuning Utility actually worked on the D900F… to a point… but became unstable.

I had a friend help me fix some of those problems by decompiling the program and debugged/optimized it for the D900F.

Because of this, we decided not to post the modified EVGA program to the public because it would be a liability.

It would not matter anyway, I thought, since the Core i7 was already so hot that OC’ing would not make much sense until we figure out the topic of heat.

So there you have it… try the EVGA ELEET and maybe you can OC your CPU… be forewarned… you can only do so much until you hit a wall … of instability.

Another idea that I did not get to test out:
- get a hold of the Intel overclocking utility for the Intel X58 boards… it might be compatible since its very basic in terms of a X58 motherboard.

The world’s fastest notebook…. just became faster…. LOL.

Game On People,
-Gophn

I will tell you what I used for the OC'ing.<br>
<br>
Since there was no BIOS overclock options, I had to find a viable software that can do the overclocking for me.<br>
<br>
I looked into motherboard with the Intel X58 chipset and had a overclocking utiliy.<br>
- Intel<br>
- Gigabyte<br>
- EVGA<br>
- ECS<br>
- MSI<br>

- ASUS<br>
... etc.<br>
<br>
I had 99% of failures with those desktop motherboard overclocking programs... except I found one that was viable.<br>
<br>
<b>EVGA E-LEET Tuning Utility</b> actually worked on the D900F... to a point... but became unstable.<br>
<br>
<img src="http://www.evga.com/eleet/images/eleet_overclocking.gif" alt="" border="0"><br>
<br>
I had a friend help me fix some of those problems by decompiling the program and debugged/optimized it for the D900F.<br>

<br>
Because of this, we decided not to post the modified EVGA program to the public because it would a liability.<br>
<br>
It would not matter anyways, I thought, since the Core i7 was already so hot that OC'ing would not make much sense until we figure out the topic of heat.<br>
<br>
So there you have it... try the EVGA ELEET and maybe you can OC your CPU... be forewarned... you can only do so much until you hit a wall ... of instability.<br>
<br>
Another idea that I did not get to test out:<br>
- get a hold of the Intel overclocking utility for the Intel X58 boards... it might be compatible since its very basic in terms of a X58 motherboard.

          

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