List your most fun or favorite overclock

[Fouquin]

Probably a tie between two for me. First would be the E5-1650 at 5346MHz done with a 120mm AIO. Stayed the world record for just over two years before prices on these plummeted and some fancy fellows with chilled loops decided to compete. Very fun chip in general.

The second in this tie is my original Phenom II X4 960T, unlocked to an X6 1605T, at 4420MHz turbo with all cores active. This CPU ran at 4GHz for most of its life when I used it, so I was happy to see after 8 years that it still had something left to give.

 

[Bones]

I take it you did that on LN2.

Nope - Good 'ol H2O, probrably chilled when I did it but water nevertheless.
The 32M PI run was chilled water as the entry pic shows.

The chip HATES the cold, acts out if and when I try to freeze it so I don't bother. Weird thing is the chip acts like it doesn't have a CB/CBB because I can get it as cold as I want and it will work but refuses to go above 249MHz on the bus no matter what when frozen.

 

[storm-chaser]

Just did a little digging through the overclocking vault and came across these two screenshots from years ago. This is what happens when you successfully unlock a Zosma Core 970 BE into a six core beast! @Fouquin

AND

 

[Bones]

CPU: Mobile Athlon 64 4000+ "Newark" @ 3.124Ghz
Cooler: Thermaltake K8 Silent Boost
Motherboard: ASRock K8Upgrade-NF3

Finally got it above 3GHz during a wind storm in the middle of winter with all the windows in the room open. Which was pretty damn good for that little air cooler and that motherboard. Hell...it was pretty damn good for that CPU on air period. I'd be in 7th place overall(2nd best on air) on HWBOT if I still had it and could replicate that OC. IIRC it took a bit more than 2.0 Vcore to get there(mobo was volt modded to achieve that).

Seems kinda pathetic in retrospect. But it was a real kick in the pants at the time.

Whatcha waiting for?
Get after it because you gotta catch me before I can go for it again with my 4000+.

 

[DR4G00N]

Oh yeah, here's a PIII 550 Katmai I was playing around with on chilled water a little while ago. Ran with an early Abit BH6 so hit the max fsb of 133MHz but still was pretty quick. Used a pin mod to run it at ~2.8V Core IIRC.

Slot 1 is always fun to play with, I only wish I had a board that could do more FSB.

 

[MrGenius]

Whatcha waiting for?
Get after it because you gotta catch me before I can go for it again with my 4000+.

I "sold" the CPU(actually ended up giving it away...since the scammer I "sold" it to never paid me for it). And I took the mobo and cooler to the recycle depot. I'm tempted to buy the CPU and mobo again just for kicks though. That CPU's pretty rare these days. Probably just get ripped off trying to buy it(price wise and/or not getting a real working one).

 

[Fouquin]

Just did a little digging through the overclocking vault and came across these two screenshots from years ago. This is what happens when you successfully unlock a Zosma Core 970 BE into a six core beast! @Fouquin

View attachment 120930
AND
View attachment 120931

I never got a Zosma 970 purely due to the lack of boxed processors available, and I was still only buying new parts at that time. The 960T has never disappointed me though.

 

[PHaS3]

Loved doing the OC on the Thuban AMD Phenom II 1100T. The pushing of the 6 cores and tweaking of the NB clock especially really made a massive difference.

Before that OC of my old C2D E8400 was fun, got it to 4.something:

I remember having a friendly competition with a friend that had a Radeon HD 5850 when I had the same card, I got mine to 1000MHz core and he backed down.

Good times.

 

[Bones]

I "sold" the CPU(actually ended up giving it away...since the scammer I "sold" it to never paid me for it). And I took the mobo and cooler to the recycle depot. I'm tempted to buy the CPU and mobo again just for kicks though. That CPU's pretty rare these days. Probably just get ripped off trying to buy it(price wise and/or not getting a real working one).

You can still find and buy them if you know where to look...... And I do.
https://starmicroinc.net/amd-athlon-64-4000-2-60ghz-1mb-l2-mobile-oem-cpu-amn4000bkx5bu/
Kinda expensive but considering how rare these are it's expected.
Team it up with the board I run (DFI NF4X Infinity), toss in some good clocking RAM and you're all set.

 

[storm-chaser]

Loved doing the OC on the Thuban AMD Phenom II 1100T. The pushing of the 6 cores and tweaking of the NB clock especially really made a massive difference.

Exactly correct. CPU-NB tweaking on the Phenom II is a must if you want a well rounded OC. All out maximum speed I was able to achieve was 3122Mhz on the NB with my 1705T. Anything above that and the system would not post. But yeah, whenever I get a new Phenom II the first thing I do is go in there and see if I can jack the NB up to 3000Mhz, as that seems to be the stability limit for most air cooled systems.

 

[infrared]

So far had a P3, P4, PD, various C2D's, a C2Q, x58 i7, 6700k and ryzen.. Without a doubt my favorite overclocking was with my c2d E8400 & P5Q Dlx.

 

[PHaS3]

Exactly correct. CPU-NB tweaking on the Phenom II is a must if you want a well rounded OC. All out maximum speed I was able to achieve was 3122Mhz on the NB with my 1705T. Anything above that and the system would not post. But yeah, whenever I get a new Phenom II the first thing I do is go in there and see if I can jack the NB up to 3000Mhz, as that seems to be the stability limit for most air cooled systems.

Yeah, IIRC I ran mine @ 4.1GHz with 3000MHz NB. Was beast.

 

[Vya Domus]

HD 5750 - 1 Ghz

 

[thebluebumblebee]

IBM AT OC'd from 6 Mhz to 8Mhz.

 

[storm-chaser]

IBM AT OC'd from 6 Mhz to 8Mhz.

Way before my time but very impressive nevertheless! My very first overclock was an AMD K6 2 from 450Mhz to 475Mhz IIRC.

 

[hat]

My favorite was probably when I still had my i7 920. I ran it at 200 bclk, which fit in very nicely for memory speed, QPI speed and uncore. I ran it at 3.8GHz or 3.6GHz most of its life. I remember 3.6GHz took only 1.15v, and 3.8GHz took more and was a little warmer. It could do 4GHz, but it got too hot, so 3.8 was the most I was comfortable with.

My first was an Athlon64x2 5200+. It kind of sucked as an overclocker, though. Being the older F2 stepping, it crapped out near 3GHz. I was able to run it at 2950MHz, but no matter what I did 3GHz was never stable. That chip is what got me started though, so I remember it fondly. A runner up to this experience would be the Phenom x2 7750BE I had for a while. I remember picking it up because I was running a single core Sempron at the time, and it was 70 or 80 bucks. In addition to having 2 cores again, it also would run somewhere around 3.9GHz.

3.9GHz was the Phenom II x2 550BE that I had. I think I remember now the 7750BE topping out around 3.3GHz? I had a lot of AMD chips before that i7 920, heh...

 

[freeagent]

All of my overclocks have been my favourite

PIII 450 @ 524, PIII 933EB Coppermine @ 1.06 AXP Tbred 2600 @ 2500, AXPM2500 @ 2700, San Diego 3700+ @ 2900, Toledo 4400+ @ 2850, e6300 Conroe @ 3150, e6600 @ 3800, Q6600 B1 @ 3600, Q6600 G0 @ 3800, e8600 E.S. @ 4900, Q6600 G0 @ 4000, Q9550 @ 4000, Xeon x3360 @ 4100, i7 965 XE E.S. @ 4100, i7 970 @ 4250, Xeon x5690 E.S. @ 4800, i7 3770k @ 4800. I might be missing one or two.. Not the best overclocks by any means, not the worst either.. but they are mine. All air, all cores.

 

[Darmok N Jalad]

I had a Dothan 800MHz that I unlocked with a #2 pencil and got it to that sacred 1.0GHz mark. Felt like I was splitting atoms at the time.

Also, the Phenom x2 550 BE that I didn’t really overclock, but getting those 2 extra cores unlocked, turning it into an x4 with the right motherboard was sure sweet. That has to count for something, right?

 

[MrRuckus]

Northwood 1.6A and my Pentium II 350 which did 133x3 from day one on my P2B before 133Mhz FSB was a thing.
WD 120's in RAID on a Promise card.

 

[Keullo-e]

Oh, this is easy..

Like in my first gaming PC, an Athlon Thunderbird with AXIA core. Had on back in the day, oc'd it to 1GHz @ 1.4GHz

I have one right now in my Socket A rig, and... 1GHz @ 1.4GHz.


e: @MrRuckus yay! I had a P2B also back in the day

 

[kapone32]

MIne has to be the FX 8320 that I had running at a stable 4.6 GHZ on all cores from a 3.5 GHZ base with Air cooling. I was new to OC at the time so I don't think I did anything other than adjust the multiplier.

 

[Keullo-e]

MIne has to be the FX 8320 that I had running at a stable 4.6 GHZ on all cores from a 3.5 GHZ base with Air cooling. I was new to OC at the time so I don't think I did anything other than adjust the multiplier.

Probably you ran it with auto voltage..? Which is bad since most motherboards give pretty damn much voltage on auto mode.

 

[GorbazTheDragon]

My favourite was probably the old delidded E7200 I have, benches at 4 and validates at over 4.5. I'll have to have a go at those old C2Ds again when I have time, probably end up using an ice bucketed AIO cooler.

Least favourite has been my 5675c, just doesnt want to get 4.2 24/7 stable, always crashes under AVX and the only inputs that do anything meaningful are Vcore and multiplier.

 

[lexluthermiester]

PIII 450 @ 524, PIII 933EB Coppermine @ 1.06

That reminds me of my second fav OC, Pentium3 650mhz(100mhz FSB) to 910mhz(140mhz FSB) with just a single bump in voltage.

 

[Tomgang]

My favorite was probably when I still had my i7 920. I ran it at 200 bclk, which fit in very nicely for memory speed, QPI speed and uncore. I ran it at 3.8GHz or 3.6GHz most of its life. I remember 3.6GHz took only 1.15v, and 3.8GHz took more and was a little warmer. It could do 4GHz, but it got too hot, so 3.8 was the most I was comfortable with.

My first was an Athlon64x2 5200+. It kind of sucked as an overclocker, though. Being the older F2 stepping, it crapped out near 3GHz. I was able to run it at 2950MHz, but no matter what I did 3GHz was never stable. That chip is what got me started though, so I remember it fondly. A runner up to this experience would be the Phenom x2 7750BE I had for a while. I remember picking it up because I was running a single core Sempron at the time, and it was 70 or 80 bucks. In addition to having 2 cores again, it also would run somewhere around 3.9GHz.

3.9GHz was the Phenom II x2 550BE that I had. I think I remember now the 7750BE topping out around 3.3GHz? I had a lot of AMD chips before that i7 920, heh...

I can i greed with you on that. I7 920 whas an amazing cpu for its time and price. I got my own I7 920 up to BLCK of 208-210 or 4.4 GHz air cooled. You can see more here, if you like to: https://www.techpowerup.com/forums/...fun-or-favorite-overclock.254575/post-4029577