Overclokcing Options
All Intel CPUs are currently clock multiplier
locked, However you can still adjust the Front Side Bus for now. Intel has yet
to come up with a way of locking that up and bringing it to market at a low
enough price (which is good for us).
This means that as long as we stick to the C466's 7x clock
multiplier setting, we can increase the clock speed by increasing the bus speed
of our motherboard. Here's a look at some possible overclocked speeds that the
Celeron 466 could see when using our Abit BX6 2.0 motherboard.
7 x 66MHz = 466 MHz
7 x 68MHz = 476 MHz
7 x 75MHz = 525 MHz
7 x 83MHz = 580 MHz
7 x 100MHz = 700 MHz
The C466's 7X multiplier pretty much rules out
the 83 and 100Mhz bus speed. However, the 75x7 for 525Mhz is pretty appealing.
We wanted to use the new Global CPM25603-12 heatsink on this Celeron, but
they're not for sale yet. We would have to make due with the stock heatsink fan
for now. Here are the results of our overclocking test.
7 x 66MHz = 466 MHz - 100% Stable (No
kidding)
7 x 68MHz = 476 MHz - 100% Stable @ 2.0V
7 x 75MHz = 525 MHz - 100% Stable @ 2.0V!!!!!!
7 x 83MHz = 580 MHz - POST, locks up at Windows splash screen
7 x 100MHz = 700 MHz - Blank screen
Let me tell you we are really really excited
here. With just a stock heatsink fan, we had our Celeron 466 running at a
whoppin' 525Mhz at 2.0V and the unit POST at 580Mhz! We are right now calling
Global Win and begging them to send us a CPM25603-12.
We don't know if our Celeron 466 represents what
all Celeron 466 can do when they go on sale. We may just have lucked out and got
a really good unit. Time will tell. However this could very well represent what
you'll get with a Celeron 466 since they will be using the highest quality
Celeron core that Intel produces.
We ran
WCPUID on the Celeron
466 and found something interesting.
Notice that the L2 Latency is set to 5. Since our current
Abit BX6-2 BIOS doesn't allow for adjustment of L2 Latency, this 5 setting was
hard coded into the Celeron 466. Could this be the reason our Celeron was able
to reach 525Mhz? We open our
WCPUL2 1.4 program
and set the L2 Latency to 2 to see if it would still work. It did and it ran
100% stable. We can only conclude that Intel is just playing it on the safe side
by lowering the L2 Latency to 5.
Next Page: Benchmarks
