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New sub here, the good olddays oveclocking, very good video.

I remember that CPU. My P1 133Mhz and a 256 Color Trident video card ran Unreal better than that clip haha

I have a PPGA370 Celly 300A that can do 600mhz at 2.1v ... Kickass performance

i had a celeron 433 cpu with 64 ram and 8 meg SIS 620 built in graphics and i ran Unreal Tornament 2000 perfectly ... probably getting 30 frames , in software render it looked great and didnt need a good video card. was the best value CPU at the time, had no idea they overclocked so well but that stuff was too technical for me at the time and we could not get the data from the internet we all had dial up models at 40k speed using the internet then.

I had a friend who used to brag about his "300A" with 128kb cache....it was a good CPU, i remember playing Mario 64 (project 64), good performance...good times....dial-up connection :(

Celeron 266 running at 400 mhz on a 100 MHz bus wasn’t actually that bad for games..

The overvolt mods were done with nail polish on the cheap back then :-)

Lovely walk down memory lane. Mid to late 90s was a PC tinkerers dream. Thanks 👍

Thankfully i had one of those and did indeed use it at 450mhz, incredible value. Don't miss those jumpers though or irq settings

I had two of the 333mhz versions of this. One of them was stable at 500mhz in my Asus P2B-VM. It was a beast of a machine.

My mother back in the 1999 or early 2000's took away my computer due to myself getting into trouble. So I bought with my hard earning money a PC Blaster from Tiger direct. It was a combo with Celeron 300. Or 350 I can't remember but most likely Celeron 300. What a fantastic computer. And back then Creatlive live chip was top of the line so it meant a lot for it being on board. And all the connection case have. Was great for a studio of some sort. I could never get the IR remote to work. Every few month I would search on ebay. Last year I saw two for sale I just didn't have the money. Stupid me. Ugh anyway's back to when I bought this. I paid under 200 dollars from tiger direct. I eventually remove board and upgraded to a Athlon board with cpu. And then one day I had a Nissan Pulsar that caught on fire due to oil leak and I left the case inside which I totally forgot I only had enough time to save my little dog. Wow I miss those Blaster PC I'll pay $500 for a mint.

These were excellent CPUs! Best bang for the buck back in the day. Overclocking was great but there existed another equally awesome trick with these CPUs. They must have released these later in a regular socket format vs Slot1 because I remember buying Slot 1 adapter boards for the Mendocino chips that had jumper settings for various things , likely the OC voltage values but for my purposes the most important was the one to enable Symmetric Multi Processing (SMP. Back in those days there were no multi-core CPUs . We had to work hard or rather be smart to build systems with more than one CPU. I cannot remember the brand but at the time in the late 90s-early2000s I was deep into Linux and I found a company that sold motherboards with 2x Slot1 CPU slots. It wasn't ASUS or Gigabyte or another big name consumer company.. but I bought like 6-8 of those boards, the slot 1 CPU adapter boards and a buncha Mendocino Celeron 300s and built several dual-CPU systems for pennies on the dollar for what a dual-CPU system would otherwise cost. The downside is that you couldn't run Win98 and take advantage of it for gaming. You had to have a kernel that supported SMP so that meant Windows NT or Linux and you had to specifically configure the system to boot SMP. But it worked ,it was stable and it kicked ass!!!

I had a dual Celeron MB OC to 455...It ran our Quake server... I had an Abit BP6 dual socket MB. Very stable.

I actually had 300A and was able to get stable at 450 I actually got it too boot up at 525 but pulled it back to 450 didn't want to get too greedy.

In 1999 my friend Vern built a 300A OC box and it was great. Unfortunately I couldn't afford build a new PC till 2000 when I built a K6-2 550 Mhz for W2K.

I found a socket 370 system back in 2007 with a Celeron Mendocino 366MHz. Had a Diamond voodoo 2 card 12mb. I slapped a Geforce MX200 PCI and 256mb ram. Ran windows XP pretty good. I let my mom have it for a couple of years until I replaced with a gaming rig I had. Then when I went to college in 2009 I donated that motherboard and CPU for them to teach things with it.

IF my memory is faithfully correct; I had a pair of 333A Cerlerons at 500 on an ABit BP6 with a custom firmware, upgraded caps and A Bit more voltage.

I really dig the idea of a slot in processor like we do with GPUs today.

My celeron 300A did 600mhz with good cooling

I had a 300A back in the day. Mine ran flawlessly with 450 MHz at stock voltage.

Had one back then, what a great bargain and a blast! Thanks for the memory.

I found a PC in the trash with that CPU in it. Unfortunately, the motherboard supports a maximum of 83MHz FSB, so the best I can get is 375MHz out of this one.

0 seconds ago 50% on the celery chip was excellent in its day but the AMD semperon I had on a nice lil DFI s754 mb OC'd absolutely insanely I still have that mb/cpu in my archives iirc muhahaha

I used to upgrade my pc about every 6 months during that time. I indeed upgraded motherboard/CPU to this combo. OC'd to 450 MHz . Pretty sure w/ 16Mb. It was rock solid. Most bang for the buck. Used it at least 6 months or more.

I spent a fortune on my PII 400 system.... bought a 300A for my brother and OC'd to 450MHz like a champ and destroyed my system... I was both surprised, upset and proud all at the same time.

This was not 450 or nothing. With a decent motherboard you got 75MHz (@338) and 83MHz (@375, I had that chip) FSB choices. Some mobos had fine-grained FSB control, so one could max what the CPU would offer.

I had one later from an old system (when 600mhz was common), but it ran without issues on 450, I actually found out by accident, by messing up the jumper settings. Yes it was a realy nice CPU.

I used to have a Celeron 300A cpu in the late 90s/early 2000s clocked to 450mhz with any issues. Performance was amazing. If I remember correctly the motherboard was from QDI.

Mine reached 500Mhz. It was perfect.

I'm so old that I can't remember if I had one of these and overclocked it to 450 mhz, or I had a Celeron 450 and tried overclocking it to 600mhz (or something). I do remember trying to play Falcon 4.0 on "it" in the summer heat with the case off and a desk fan pointed right at the motherboard, all while sitting there in my underwear since it was so hot. Those were the days(?)

If you can find a working Abit motherboard from that period I’d be surprised. Most (including my dual processor BP6) died from Chinese capacitor plague.

I had an Abit BH6 in '98 with a Celeron 300a. I won the silicone lottery and was able to overclock to 450mhz on my first try without changing voltage. I ran it, day 1, overclocked the entire time that I owned with zero issues. Was a great time to own a PC =)

Nice memory lane :) I remember selling hundreds of those CPU 300A on computers or for parts too. All Computers equiped with those CPU were already OC to 450MHz / 100MHz by me in the shop. Then installed Windows, drv, apps, etc. And voila another customer happyy to have saved lot of money. We didnt do that for companies or only a few that asked for it because of pro apps used at that moment that needed ultra stable PC and new SSE instruction or more cache. Funy thing is I dont remember any of those CPU / computer not booting at 450Mhz / 100MHz fsb. and not a single customer complaining about stability. Maybe we were lucky ? :) Anyway, good work as always sir !

Nah. The Pentium 2 stole its lunch and kicked sand in its face. And it didn't matter how far you overclocked a Celeron - it was still sluggish due to the tiny cache. They would overclock like crazy - no doubt about it. But they did not overclock anything like the original AMD Athlon, where the Pencil Trick would unlock the processor multiplier, and my 1.0 Athlon ran at a rock solid 1.5Ghz, all day every day. For years. The box did sound like a jet aircraft however. :P

i have some of those celerons and wil give it a try

My understanding was that it was the die from the 450mhz Xeon that came with both the on die cache and an L3 cache.

What a legendary CPU, I had one back in the days and it was the best deal I ever had on a CPU (Except for the 7950x currently in my system that I got the the equivalent of 350$US.... But buying a low end CPU and getting it to run as well as the one in my roommate's PC for a fraction of the price was just amazing!

Great video and legendary CPU. As many others have already alluded to, those were interesting and fun days for CPUs. Overclocking that actually mattered, pencils for multiplier unlocks and lots more fun to be had. Same with GPUs. Remember modding the ATi 9500 to a 9700 with some luck.

The best CPU you could get was the PII 333/66 since you could Bus overclock this to 500/100 which made this become the actual performance monster. This is how I did it back in the days and it worked like a charm. The boost in performance doing this was insane

back in september 1998 (if i remember well), i had purchased the Abit BH6 packed with the Celeron 300A clocked at 450mhz (some sellers in Paris were offering such a pre-tested bundle) paired with the Voodoo Banshee AGP. It was an incredible beast !

Are you german? If yes where the hell do you find scrapyards there you can take stuff???

I had one of these! It felt so amazing to get it overclocked and STABLE! Such a cool processor.

I must have won the silicon lottery with mine. Not only was it rock-solid at 450 MHz, but I could get into Windows at 540 MHz on stock voltage. It wasn't fully stable at that speed, but it ran. Dialing it back to 504 MHz was pretty much the sweet spot.

The 300A was reliably overclockable by 50% to 450MHz in almost all cases. All you had to do was change the front side bus speed on the motherboard from 66MHZ to 100MHz. A 300A running at 450MHz would keep up with a regular PII running at 400MHz, and it was half the cost. Yours is the first 300A I've heard of that wouldn't do that; possibly, it's because the motherboard (and its caps) are 26 years old, and are maybe a tad less stable than they used to be. I owned a 300A myself, and set up a number of machines for others back then to work the same way. They all ran at 450.

I had a k6-2 500mhz, but I had a friend with a celeron that didn't have cache, that cpu just felt awful, everything about it was slow and terrible. The desktop performance was so slow, booting worse. I don't even know what games he managed to play on it. I later upgraded to an athlon and I think he got duron for his system shortly after.

It was my 2nd PC. Had bought it in November 1998 and have been using until summer 2003 ! :) Really great CPU!!!! I played Quake3, Blood2, Half Life, Age of Empires 2.