I'm messing with my Socket 423 Asus P4T i850 setup.
I was hoping to find a Willamette P4 1.7 capable of beeing clocked to 17*133 = 2266 MHz as I feel that would probably be optimal whithout overclocking the AGP or PCI bus. I had high hopes for a CPU with E0 stepping but it would not even post at 2266 MHz with 1.85V. I have tried a few P4 1.7 with D0 stepping but so far no luck, they all seem to top out at 2000 - 2100 MHz.
Finding a Willamette 2 GHz CPU that can do 2200+ MHz isn't hard but that is with overclocked AGP and PCI bus. The upside is that the memory runs at 880+ MHz with the 4x multiplier at 110 MHz FSB versus 800 MHz with the 3x multiplier at 133 MHZ FSB. Running 133 MHz FSB with 4x memory multiplier is sadly not possible even if I found a capable P4 1.7 CPU because my Asus P4T uses crappy Cypress W134SH DRCGs* and not the better overclockable ICS ones. I still feel 17x133 would be the optimal setting to keep "everything" in spec but sometimes we get what we get and not what we want.
*Direct Rambus Clock Generators 😁
In any case my old Socket 478 Willamette 2 GHz CPU hat I got through work with a FSC Scaleo 800 computer shortly efter it's release is a good overclocker and shoehorned (or rather the opposite) into the Socket 423 socket it's still capable of running at 2.2 GHz with stock voltage. I actually tried to get a real Socket 423 2GHz CPU but the German selling it thinks 15 euro is a reasonable shipping cost for a CPU... I don't. I will probably end up using my old Socket 478 2 GHz CPU in this build, I ran some benchmarks with it yesterday.
This is a stable setting and I upgraded the memory to 1GB today before I started testing other CPUs. After I installed the new memory I let the 7-Zip benchmark run for an hour and then I played World of Warcraft for 2 hours so I guess it's still stable.
I will test more fun stuff before I case this build and put in in storage... 😜 Northwood Celerons are really really horrible CPUs performance wise, even the 2.6 GHz one gets beaten by the slowest Athlon XP CPUs (see link). I wonder how a Northwood Celeron would compare to the Willamette P4 2.0. I know some people I knew back then upgraded from Willamettes (s478) to Northwood Celerons and claimed that with overlocking the Celerons were really speedy, I need to test this for my self.
Link showing just how slow the Northwood Celeron could be.
Main PC: Dual Xeon X5690@4.6ghz, Evga - SR-2, 48gb memory, Intel X25-M g2 SSD and a Nvidia GTX 980 ti.
Retro PC #3: K6-2 450@500mhz, PC-Chips m577, 256mb sdram, AWE64 and a Voodoo Banshee.