Since the Pentium4 1.6A is using the same 0.13 micron core as much faster P4's, it should be obvious that there is a lot of headroom with this processor.

The first thing we did when we plugged the CPU into the motherboard was up the FSB to 133 MHz and the little CPU didn't disappoint us. Instead of being a good overclocker and testing stability, we went back into the BIOS and raised the FSB yet again, this time to 150 MHz. Boom, 2.4 GHz right off the bat.

Upon entering windows we encountered a few stability problems so we raised the core voltage to 1.65V and all the stability problems went away. Keeping a 1.65V Vcore we next tried 160 MHz FSB and no problems there either.

We hit a very weird barrier at around 163 MHz though. At 2.61 GHz (163MHzx16) the processor was absolutely stable but 1 MHz higher and the system would only POST about 40% of the time. That wasn't the weird part though. When the system did post and boot into windows the system was again 100% stable!

This phenomenon happened all the way up to 170 MHz FSB which would give us a CPU speed of 2.72 GHz. We're not really sure what was going on and if you have any suggestions please tell me here. None the less, we were very, very happy to see a 1 GHz overclock ! =)

pcstats test system specs:
computer hardware:
processor:	pentium 4 1.6a
clock speed:	16x100 mhz = 1.6 ghz 16x163 mhz = 2.61 ghz
motherboards:	albatron p4x845epro
chipset:	intel i845e
videocard:	msi g4ti4600-vtd
memory:	256mb kingmax ddr333
hard drive:	40 gb maxtor d740x
cdrom:	panasonic 48x cd-rom cr-594-b
floppy:	panasonic 1.44mb floppy drive
heatsink:	avc sunflower
powersupply:	antec 400w psu
software setup	windowsxp build 2600 intel inf 4.00 detonatorxp 29.40
benchmarks	sysmark 2002 business winstone 2001 content creation 2001 specviewperf 6.1.2 super pi sisoft sandra 2002 pro 3dmark2001 se quake iii arena

please remember, the overclocked test results has both the fsb as well as the cpu overclocked.

BAPCO Sysmark 2002	Source:MadOnion / BAPco

SysMark2002 is more of an extension of SysMark2001 rather then a whole new benchmark. The applications used during testing have been updated and most importantly for AMD users, the new SysMark2002 uses the Windows Media Encoder 7.1 which supports the AthlonXP's SSE instructions.

BapCo SysMark 2002 Benchmark Results
	Internet Content (FSB)	Sysmarks	Ranking
1.	P4 1.6A - 100 MHz	210
2.	P4 1.6A - 163 MHz	362
	Office Productivity (FSB)
1	P4 1.6A - 100 MHz	134
2.	P4 1.6A - 163 MHz	189

At stock speeds, the P4 1.6A performs online with what we expect however as we can see, overclocking brings a huge performance boost!