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Identification (Cont.)
OK, you've made sure that you have a new E0
stepping, but let's look at how we can possibly improve our
overclocking potential. This next part is just a theory, it
has not been proven so I won't present it as fact. You can try
it and see how it works for you or you can completely ignore it.
We are going to be focusing on the notch in the
IHS. In that notch you will find two lines of numbers.
The bottom line is where we want to focus. Actually, it's just
the last two numbers that we are concerned with. Some theories
say it's the last four numbers, but the one I'm spreading is just
the last two. Obviously, the last two digits have a range of
"00" to "99". The theory is that the closer these numbers are
to "00" the better overclocker you will have. The reason
behind this theory is the position on the wafer. "00"
represents the closest to the center of the wafer and "99" the
furthest away from center. The center of the wafer represents
the better of the batch. Now in my very limited experience
with this theory, the few CPU's that I have looked at have actually
had a lower VID with the lower number and have actually overclocked
better. But as I stated, I have limited experience with this
and have tested fewer than 20 CPUs. So, my results could have
been purely coincidental. It's a theory, so you can try it for
yourself and see how it works.
Overclocking
Of course this is the best. This is the
part that I've been thinking about ever since I first saw the new E0
stepping. First the test system.
| Motherboard |
ASUS P5E3
Premium WiFi - @n Edition |
| CPU |
C2D E8400 E0
stepping |
| Video |
Visiontek
HD4870 |
| Memory |
2GB Patriot PC3-15000
Extreme |
| Power Supply |
ePower Tech 1200w |
| Storage |
2 x 500GB Seagate HDD
RAID 0 |
| Optical |
Lite-On 20X DVD+/-RW
+DL |
| OS |
Windows Vista
Ultimate |
Alright, let's start off by looking at the CPU at
default settings. Then we'll move up to 4Ghz and then finally
to the max I could get. The cooling that I'll be using for the
testing will be the Corsair Nautilus 500 water cooling rig.
This is a nice entry level water cooling kit. Being that it's
entry level, you can probably get the same results on good air.
Default

You really have to love that low voltage.
The motherboard that I'm running likes to bump up the voltage on its
own. When left in auto the board set the voltage to 1.22V.
This is way more than it really needed so you may have to play
around with your voltages to see what you can set yours too.
Don't forget to test it for stability once you have decided on a
voltage.
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