Prescott2400A Prescott 2.4A SL7E8 Overclocking

A mysterious Prescott 2.4A with S-Spec of SL7E8 has
surfaced in Japan 2 days ago. It is running at 533Mhz FSB with 1.4V VCore but
has no HT Technology. Prescott will take on a new D-0 stepping to replace the
current C-0 stepping and D-0 stepping incorporates planned power optimizations
to enable speed enhancements therefore overclockability might improve with the
new stepping. This Prescott 2.4A SL7E8 is based on the newly revised S-Spec for
D-0 Stepping but something else tells us that it might not be the new stepping
yet. A Japanese overclocker has checked out the overclockability of
the Prescott 2.4A stock cooled on ASUS P4C800-Deluxe and Kingston KHX3500 256MB
x 2. He managed to hit 3.6Ghz at default VCore of 1.4V and ~4Ghz at 1.65V.

Prescott2400A Prescott 2.4A SL7E8 Overclocking

A mysterious Prescott 2.4A with S-Spec of SL7E8 has
surfaced in Japan 2 days ago. It is running at 533Mhz FSB with 1.4V VCore but
has no HT Technology. Prescott will take on a new D-0 stepping to replace the
current C-0 stepping and D-0 stepping incorporates planned power optimizations
to enable speed enhancements therefore overclockability might improve with the
new stepping. This Prescott 2.4A SL7E8 is based on the newly revised S-Spec for
D-0 Stepping but something else tells us that it might not be the new stepping
yet. Read on.

Pentium 4 2.8A GHz : SL7D8 to SL7E2
Pentium 4 2.8E GHz : SL79K to SL7E3
Pentium 4 3.0E GHz : SL79L to SL7E4
Pentium 4 3.2E GHz : SL7B8 to SL7E5


SuperPI 4435 s Prescott 2.4A SL7E8 Overclocking

A Japanese overclocker has checked out the overclockability of
the Prescott 2.4A stock cooled on ASUS P4C800-Deluxe and Kingston KHX3500 256MB
x 2. He managed to hit 3.6Ghz at default VCore of 1.4V and ~4Ghz at 1.65V.

Next the Prescott 2.4A was LN2 cooled with VCore at 1.75V and
overclocked to 4.4Ghz with SuperPI 1M calculation completed in 29s. The
CrystalCPUID screenshot revealed something interesting. While the S-Spec of
SL7E8 confirms that the Prescott 2.4A is a D-0 stepping but the CPUID shows that
it is still a C-0 stepping. D-0 stepping should have a CPUID of 0F34h
instead of 0F33h therefore this Prescott 2.4A is still a C0.

It
is definitely interesting to see how much better a D0 Prescott can be
overclocked. In the next quarter, it will be a battle between LGA775 D-0
stepping Prescott against 939-pin Athlon 64 “Newcastle” CG revisions.

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