Well said.
Answer will obviously depend on why the chip was purchased in the first place - and that will be different person-to-person.
I already owned a 2600k when I bought the 3770k. I bought the 3770k 100% purely for hobby/entertainment purposes and planned to pretty much just mess around with it and either kill it in the process or eventually repurpose it to replace an existing Q6600 box that I use to harvest market data at this time.
So for me the answer would be yes, the entertainment value I have derived from delidding my 3770k has been thoroughly worth the risk of killing the chip in the process. It has been far and away more enjoyable than the fun I had with my 2600k which at most all I could do was lap the IHS.
But if I were purely looking at this from the perspective of "did it improve the performance of the 3770k enough to justify the risk of possible destroying a $300 investment just to get an extra 100MHz or 200MHz?" then I would have to say the answer is absolutely not, the paltry performance gains of adding on another 100-200 MHz is probably not worth the risk of permanently damaging a $300 CPU.
If I were in that much need for the performance, a situation where 4.4GHz was not acceptable and I really had to have 4.7GHz then I would just go buy a 2600k or 2700k, lap it, and push the volts through it and hit 5GHz.
If I were building an IvyBridge based system for anyone else I would not delid it. I would leave it "as is". If cooling was a concern because the person didn't want to listen to a noisy HSF then I'd spend money on quieter fans versus adding in the risk of destroying a $300 chip.
But if you are looking at wanting a cooler CPU and you enjoy tinkering under the hood then delidding is a rewarding process to put yourself through from a hobby perspective.
Just my opinion, I suspect everyone has a different take on it.
Delidding and mounting bare die lowered my temps enough that I can safely run 4.6ghz where my temps were high enough before that 4.5 was as high as I wanted to go. I'm already well into the realm of diminishing returns though.
I wouldn't recommend it to anyone who isn't trying to push clocks like you could on Sandy Bridge. With Sandy, and if you had a good chip, you could keep adding volts and scale the clocks up to the stratosphere. I believe there's a guy on this forum who has a SB that he's taken to 5.6ghz without extreme cooling, and you simply can't do that on Ivy Bridge, lid or not, because you'll hit tjmax.
while I agree that there seems to be more of a sweet spot for ivy bridge (clock OC + very little voltage adding) . Tjmax for ivy bridge is 105c vs 85c for sandy bridge ?
not that the added overhead would help in OC as 80+ is still pretty high and temps is your enemy . Intel just raised the throttling point of IB .
Ok, thanks for input , I see what you mean .Sandy Bridge TJmax is 98°C, Ivy Bridge is 105°C.
It is true that if you do not delid the IB then your OC efforts will be TJmax-limited and not voltage limited, unlike Sandy Bridge.
But if you do delid your IB you will be able to get into the clockspeed regime where your OC is voltage-limited instead of TJmax limited. (before delidding the max I could do was 4.7GHz with 1.3V using an H100 and my temps would peak at right under TJmax in LinX)
After delidding I can hit 5GHz with my 3770k without hitting 105°C, but it requires an insane voltage of ~1.45V and that is just asking for a quick death.
So I keep the max clocks at 4.8GHz (1.36V) with temps around 80°C.
So I keep the max clocks at 4.8GHz (1.36V) with temps around 80°C.
Just a matter of curiosity. When people are referring to safe voltages, is this before vdroop or after?
I'm curious how much more I could put my processor through while still being in a "safe" range.
So you have it disabled in bios ?I leave LLC off with my overclocks but I try to stay under 1.30v fully loaded. I figure since it's a combination of temperature and voltage that kills a chip, 1.3v @ 80c and 1.35v and 50c are probably about equally bad.
If you use LLC you can probably mostly cancel out vdroop.
So you have it disabled in bios ?
My Asus P8Z77v-pro has auto, regular, medium, high , ultra high and extreme . I thought leaving it on auto or regular gives you intel voltage table .
I realize my LLC results aren't what people would consider to be typical and I believe it is because of the specific mobo I am using (ASUS MIVE-Z, a $360 spendy sucker).
So for me all my results are with LLC and the Vdroop is pretty much zero, verified by a voltmeter and not software readings.
For example I am running a test right now with the Vcc set to 1.360V, the voltmeter is reading 1.361V actual voltage.
Just curious , where are you taping off on MB to see vcore ?
C.C. those temperature results are great
One question, the GFlops number itself is low which means the CPU isn't generating as much heat as it should be at that clockspeed with that problem size. Did you run with 8 threads or 4 threads? For max GFlops and max heat generation you want to set IBT to run with only 4 threads.
At 4.5GHz using problem size 43122 I hit 127GFlops with my 3770k. You appear to only be hitting 100Gflops.
On the MIVE-Z mobo there is a set of contact points for external voltage monitoring that ASUS calls the "ProbeIt Belt". You can easily measure the voltage on a number of different components - ram, iGPU, PCH PLL, etc.
C.C. those temperature results are great
One question, the GFlops number itself is low which means the CPU isn't generating as much heat as it should be at that clockspeed with that problem size. Did you run with 8 threads or 4 threads? For max GFlops and max heat generation you want to set IBT to run with only 4 threads.
At 4.5GHz using problem size 43122 I hit 127GFlops with my 3770k. You appear to only be hitting 100Gflops.
C C thats nice temps , thats about what I get in prime at 4.0ghz .
What was it before , I assume your doing watercooling ?
Hmm, thanks for the heads up IDC, I ran mine @ 4.4 with similar results, was using 8 threads with HT. As posted in the new thread I made, max was 75 C, but I am not delidded.
Will IBT automatically know to only use physical cores with 4 threads? When I unchecked the "use all logical cores" on OCCT, task manager reported all 8 threads being used, just at 50% :C
Will IBT automatically know to only use physical cores with 4 threads? When I unchecked the "use all logical cores" on OCCT, task manager reported all 8 threads being used, just at 50% :C
C.C. those temperature results are great
One question, the GFlops number itself is low which means the CPU isn't generating as much heat as it should be at that clockspeed with that problem size. Did you run with 8 threads or 4 threads? For max GFlops and max heat generation you want to set IBT to run with only 4 threads.
At 4.5GHz using problem size 43122 I hit 127GFlops with my 3770k. You appear to only be hitting 100Gflops.
Contrary to your post, the temps did not increase when I turned HT off..