Pentium D 915 is a Dandy Overclocker

[Linden]

Swapped out the D 820 furnace in one of my systems yesterday for a new Pentium D 915 (65nm, 2.8GHz, 800MHz FSB, 2 X 2MB Cache)

46% overclock: Mulitplier 14 X 293MHz FSB = 4102MHz. That's 1300MHz above the stock frequency. I had heard these CPUs were very good, the last steppings in the D series dual core from Intel. Oh yes, running about 4*C cooler and .5v lower vCore clock for clock than the D 820 that came out of this machine.

OK, here are settings and readings:

Multiplier: 14 (locked)
FSB: 293MHz
Bus: 1172MHz
vCore Set/Indicated: 1.362v/1.31v (default set is 1.3)
Northbridge: .2v over default
Southbridge: .1v over default
FSB Termination: .1v over default

DRAM: DDR2 667@732

The machine is running stable so far under full load of two instances of Folding@Home and light multitasking. I believe there is headroom still available.

CPU Z identifies the CPU as a Pentium D 920. The D915 actually is the same core (x2) but with virtualization technology absent.

I had it full load yesterday for a while at 4.2GHz, 1.375v vCore (set), but it crashed during multitasking). I'll probably try again later for a stable 4.2 or 4.3 with elevated vCore. First though, I'd like for the Arctic Silver 5 to settle in some before boosting the juice.

System specifiactions:

Asus P5WD2 Premium, P D915 2.8@4.1, Antec True 430 Type II PSU, 1GB G.Skill DDR2 667 , Quadro FX-1400 PCIe, Max. Ultra 80GB, Hitachi DeskStar 160GB, Scythe Ninja;

 

[nooh]

4.2ghz is more than enough. I had the a similar problem with my 930D at that speed and it was the board which was letting me down and the pwm chips were the caus