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What's the worst luck you all have had in the silicon lottery?

Well, I haven't had a lot of experience, but I remember I bought both a 2600k and 2500k used, expecting to "feel the sandy bridge magic" and I ended up with chips that walled at like 4.3 ghz... No 5ghz for me. Also, I had a 5800x that just absolutely gobbled power and temps, and did not want to curve optimizer undervolt really at all, and so it ran really low all core boost to keep the temps within limits.
 
Haswellbeast said:
Well, I haven't had a lot of experience, but I remember I bought both a 2600k and 2500k used, expecting to "feel the sandy bridge magic" and I ended up with chips that walled at like 4.3 ghz... No 5ghz for me. Also, I had a 5800x that just absolutely gobbled power and temps, and did not want to curve optimizer undervolt really at all, and so it ran really low all core boost to keep the temps within limits.
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I feel like Intel's 2000, 3000, and 4000 series had a lot of overclocking variance, and the motherboards had a decent amount to do with it. Plus, the 2000 series were difficult to keep cool, and the 3000 and 4000 series were better if delidded.

Aside from AM3 and AM4 CPU's, I remember being disappointed in some i7 920 CPU overclocks. Those were really hit or miss back then.
 
El_Capitan said:
I feel like Intel's 2000, 3000, and 4000 series had a lot of overclocking variance, and the motherboards had a decent amount to do with it. Plus, the 2000 series were difficult to keep cool, and the 3000 and 4000 series were better if delidded.

Aside from AM3 and AM4 CPU's, I remember being disappointed in some i7 920 CPU overclocks. Those were really hit or miss back then.
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Yeah, I remember, I think it was anandtech, but their review sample for haswell topped out barely over 4, they got a chip from the fab dumpster, and apparently Intel changed some of the binning techniques around haswell that allowed all that variance.
 
My current Ryzen 5800x. It's an absolute piece of shit which can't do anything better than stock and it's gotten to the point where I'm not even sure it's 100% stable at stock. Even my son's 5900x will clock higher and run a lot cooler even under a heavy all core load.

I don't even bother with PBO because it's useless. I've tried multiple times to see if it would even go above the 4850 stock boost and even under an extremely light single core load I don't think I've ever seen it do any better than 4900 for a split second. Core Optimizer is also useless. The hours I've put into it was completely wasted. Just for the hell of it I messed around with the main auto-overclock tool from several years back, I don't remember what it's called, and the basic result it gave was a tiny undervolt for most cores but it actually wanted an overvolt for at least two of the cores.

I'm half tempted to run it at 65w eco mode at this point.
 
SmokeRngs said:
My current Ryzen 5800x. It's an absolute piece of shit which can't do anything better than stock and it's gotten to the point where I'm not even sure it's 100% stable at stock. Even my son's 5900x will clock higher and run a lot cooler even under a heavy all core load.

I don't even bother with PBO because it's useless. I've tried multiple times to see if it would even go above the 4850 stock boost and even under an extremely light single core load I don't think I've ever seen it do any better than 4900 for a split second. Core Optimizer is also useless. The hours I've put into it was completely wasted. Just for the hell of it I messed around with the main auto-overclock tool from several years back, I don't remember what it's called, and the basic result it gave was a tiny undervolt for most cores but it actually wanted an overvolt for at least two of the cores.

I'm half tempted to run it at 65w eco mode at this point.
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Yeah, that's sounds almost exactly like my 5800x, and in my experience, eco mode is fine.
 
GTX 660 - zero OC possible - instantly crashed
GTX 780 - very little OC possible
RTX 2070 - very little OC possible
Core i9 9900 - had to basically run at stock. I only use multi-core enhancements from OC features. Likely mobo related but I could not use fixed vcore reliably at all and I couldn't get 5GHz all core working reliably. Basically "K" with this CPU didn't mean sheet...

There were more silicon lottery losses in the far past but generally nothing where no OC was possible.
Typically selected parts for OC.
In the past OC was large part of computer purchases.
 
My i7-5820k that I ran for a long time. I was able to run a 4.5Ghz all-core OC, so it wasn't terrible in that respect, but it was only stable at those speeds with a ton of voltage. That turned it into an absolute furnace. Pretty much any kind of sustained all-core load would have it up close to throttling, even with a 360mm AIO with 6 fans in push-pull. I'm surprised that the chip never degraded actually. The Ryzen 3900X that I upgraded to afterward was trivial to cool in comparison, despite having twice as many cores.

I'm still using that same X99 motherboard in my backup PC but the 5820k has since been replaced with a Xeon E5-1660 v3 (i7-5960X equivalent). It can do 4.7Ghz with less voltage than it took to get my 5820k to 4.5Ghz despite having 2 extra cores.
 
GotNoRice said:
My i7-5820k that I ran for a long time. I was able to run a 4.5Ghz all-core OC, so it wasn't terrible in that respect, but it was only stable at those speeds with a ton of voltage. That turned it into an absolute furnace. Pretty much any kind of sustained all-core load would have it up close to throttling, even with a 360mm AIO with 6 fans in push-pull. I'm surprised that the chip never degraded actually. The Ryzen 3900X that I upgraded to afterward was trivial to cool in comparison, despite having twice as many cores.

I'm still using that same X99 motherboard in my backup PC but the 5820k has since been replaced with a Xeon E5-1660 v3 (i7-5960X equivalent). It can do 4.7Ghz with less voltage than it took to get my 5820k to 4.5Ghz despite having 2 extra cores.
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Wow, even v3 xeon 16xx chips are unlocked? I didn't know that, I thought it was only v1 and v2. That said, maybe your 5820k was one of those "high leakage" chips, where, they run really hot and gobble voltage, but they can still hit high clocks with enough cooling. Also, high leakage chips are the extreme OCer's dream, because they're typically the chips that keep scaling on LN2.. not so sure about haswell e though, since the FIVR gives it cold bugs
 
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Cyrix 486 DX2-66 (5V part)...

I tried to overclock it to 80 MHz, since all of the other components in the system worked just fine with an AMD 486 DX-40.

Nope. It would work fine for about 2 minutes after booting up, and then freeze. The CPU wasn't even warm at all.

This would happen even if I let it sit for an hour after booting up. Within 2 minutes of using it with something CPU intensive, it would lock up.

It worked fine when I brought it back to 66 MHz, but in all honesty, there wasn't any real difference between that and my old AMD 486 DX-40.
 
GTX 780 and a 980 which couldn't OC at all. They'd be stable in benches no matter how long I ran them. Games would run a while but a driver crash was a matter of when and I gave up trying. It was disappointing after coming from Radeon cards I recall easily hitting +10% or more.
 
Don't think I have every had a really bad one in regards to overclocking. Have had to work on some more than others though.

It is more of a not getting a "golden sample" for the most part.
 
cyclone3d said:
Don't think I have every had a really bad one in regards to overclocking. Have had to work on some more than others though.

It is more of a not getting a "golden sample" for the most part.
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Yeah, for me, the "worst" ones are just the ones that are like, average to slightly below, since for most silicon, that just means you hit a clock wall. I am remembering now a phenom ii x6 1090T I bought a bit back, and the results made me pretty sure it had been degraded by the previous owner, since like, if memory serves, it either couldn't hit 4 ghz or it was like, borderline stable, but needed so much voltage I didn't bother. I had a 1045t before that that could run 4 ghz alright.
 
13700K ran at Stock speeds opened the Map menu it Atomfall fans would rev up and game would shutdown PC. Had this happen like 30 times untill I put the 12700K back in running a 14700K now.
 
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Haswellbeast said:
Yeah, for me, the "worst" ones are just the ones that are like, average to slightly below, since for most silicon, that just means you hit a clock wall. I am remembering now a phenom ii x6 1090T I bought a bit back, and the results made me pretty sure it had been degraded by the previous owner, since like, if memory serves, it either couldn't hit 4 ghz or it was like, borderline stable, but needed so much voltage I didn't bother. I had a 1045t before that that could run 4 ghz alright.
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:)

1090T_4.2GHz.png
 
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cyclone3d said:
Don't think I have every had a really bad one in regards to overclocking. Have had to work on some more than others though.

It is more of a not getting a "golden sample" for the most part.
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I tried posting on your account page, but I dont think you got the notification. Can you check your account page comments? I have a small request.
 
probably the radeon 9000 pro i got back when i was in college. it was a great card for the price, but it wouldn't overclock worth shit. even a couple Mhz and it would give me a middle finger.
 
THRESHIN said:
probably the radeon 9000 pro i got back when i was in college. it was a great card for the price, but it wouldn't overclock worth shit. even a couple Mhz and it would give me a middle finger.
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I had an ATI X800XL, shittiest card I ever got, wouldn't overclock for shit and as a result was barely any faster than my previous 9800Pro watercooled. Even soldered volt modding did nothing. Silicon was just at a solid wall.

CPU wise, gotta be haswell 4770K. barely managed 4.7ghz and as such was in some cases slower than the 2600K @ 5.4ghz it replaced.
 
spine said:
I had an ATI X800XL, shittiest card I ever got, wouldn't overclock for shit and as a result was barely any faster than my previous 9800Pro watercooled. Even soldered volt modding did nothing. Silicon was just at a solid wall.

CPU wise, gotta be haswell 4770K. barely managed 4.7ghz and as such was in some cases slower than the 2600K @ 5.4ghz it replaced.
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That video card was still faster than my poverty level 9000 pro by far lol. I kept it until 2006. Graduated in 2005 and got my first job October, got a big tax return and rebuilt the old desktop.

Worst CPU.... probably the Athlon XP 1600+. It wasn't a bad CPU at all, but they ran pretty warm for the time so overclocking was kinda limited. I think I lost the lottery on that one too. Same system as the 9000 pro.
 
Most AMD procs. Couldn't clock worth crap including my 9950X3D. Barely does it's max without turning into a fireball. Great proc though so I just run some neg PBO and that's it.
 
An AMD phenom that wouldn't unlock two hidden cores. An e6400 that any OC would destabilize everything. I've given up ocing and just use everything at stock now
 
kyang357 said:
An AMD phenom that wouldn't unlock two hidden cores. An e6400 that any OC would destabilize everything. I've given up ocing and just use everything at stock now
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I tried that with an entire tray of those. I think I got all but maybe one of them to unlock.
 
I vaguely remember my Haswell 4770K wouldn't do better than 4.2-4.3ghz.

My Q6600 was stable near 3.4ghz from 2.4ghz. I think that was pretty good.
 
Hmm.

After same careful consideration.. I will say my 965XE ES. That turd maxed out at 4GHz, I think I got 4.2 with HT off.. so I replaced it with a 970 Gulftown. Also a turd. Same clocks. Early sample.. but not ES early. Had a weak IMC too which made it worse lol. Replaced with a X5690 ES and used it for ~9 years. That one was good.

After that would be my 4200+ on 939. 200MHz. Then P3 450.. I think I got 525 out of it.. but that was a divider thing, not the CPUs fault.
 
I had an EVGA GTX 1080 that could overclock more than 99% of samples. Unfortunately no matter what I did the coil whine could be heard a fucking mile away so I sent it back.

Since then everything I buy is the top worst overclocker (3080, 5090, Ryzen 7700x)
 
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