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[Official] Delidded Club / Guide - Page 1253

post #12521 of 33678
Quote:
Originally Posted by valkeriefire View Post

Ok, 4.6ghz testing complete! 14C Drop! I am very pleased with these results. My idle temp even gets down to 20C on one core.

My original IBT run @4.6ghz, 1.3v, NH-D14 maxed out at 97C. I stopped the test after 6 passes because I didn't like the temps.
Here is a sceen shot of the 97C. Warning: Spoiler! (Click to show)

After Delidding, applying Noctua NT-H1 to the die, and Innovating Cooling Diamond to the IHS, I got a max temp of 83C and that temp held for all 10 passes.
Screen shot of 83C. Warning: Spoiler! (Click to show)

OCN name: ValkerieFire
CPU: i7-3770k
on die-TIM: Noctua NT-H1
ihs-TIM: Innovative Cooling Diamond
Mhz gained: Not Tested Yet
OC after delid: 4.6ghz
Temp drops: 14C
CPU-Z validation of max OC: Max not tested yet.

I've never tested this CPU past 4.6ghz, but I'll give it a shot now since the temps are reasonable. I bet I could maybe hit 5.0 and stay under 95C.
1.3v is pretty high for 4.6 GHz and 83 on air isn't bad for that voltage but to bump it to 5 GHz it seems to me your going to need a lot of voltage of you need 1.3 for 4.6 and I wouldn't let your temps get anywhere near 95. 85 is pushing it at least for my comfort level.
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post #12522 of 33678
Valkeriw, that's a genius idea with the markings!
Did you reglue the ihs to the pcb after?
post #12523 of 33678
Quote:
Originally Posted by chann3l View Post

1.3v is pretty high for 4.6 GHz and 83 on air isn't bad for that voltage but to bump it to 5 GHz it seems to me your going to need a lot of voltage of you need 1.3 for 4.6 and I wouldn't let your temps get anywhere near 95. 85 is pushing it at least for my comfort level.

You are right, it is actually stable at lower voltages, but I haven't figured out exactly where that stability ends, and since I wanted consistent results, I went with a voltage I knew was 100% stable for my CPU. I just reran the test @ 4.6ghz, 1.275v and passed with max temp of 77C, a 6C drop under 1.3v. I think my chip is decent, but it isn't a superstar by any means.
Quote:
Originally Posted by Totally Dubbed View Post

Valkeriw, that's a genius idea with the markings!
Did you reglue the ihs to the pcb after?

Thank you. I didn't reglue the IHS, it is just free floating and then locked down by the CPU clamp. For the markings I used a fine tip permanent marker. The ink wipes off the metal when you rub it vigorously with an alcohol wipe. A dry erase marker would probably work just as well and have no risk of permanence, but I didn't think of that until just now.
 
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post #12524 of 33678
Quote:
Originally Posted by valkeriefire View Post

You are right, it is actually stable at lower voltages, but I haven't figured out exactly where that stability ends, and since I wanted consistent results, I went with a voltage I knew was 100% stable for my CPU. I just reran the test @ 4.6ghz, 1.275v and passed with max temp of 77C, a 6C drop under 1.3v. I think my chip is decent, but it isn't a superstar by any means.
Thank you. I didn't reglue the IHS, it is just free floating and then locked down by the CPU clamp. For the markings I used a fine tip permanent marker. The ink wipes off the metal when you rub it vigorously with an alcohol wipe. A dry erase marker would probably work just as well and have no risk of permanence, but I didn't think of that until just now.

nice one smile.gif!
Yeah when i read your post I had the impression that you re-glues it for some reason lol
post #12525 of 33678
Quote:
Originally Posted by valkeriefire View Post

You are right, it is actually stable at lower voltages, but I haven't figured out exactly where that stability ends, and since I wanted consistent results, I went with a voltage I knew was 100% stable for my CPU. I just reran the test @ 4.6ghz, 1.275v and passed with max temp of 77C, a 6C drop under 1.3v. I think my chip is decent, but it isn't a superstar by any means.
Thank you. I didn't reglue the IHS, it is just free floating and then locked down by the CPU clamp. For the markings I used a fine tip permanent marker. The ink wipes off the metal when you rub it vigorously with an alcohol wipe. A dry erase marker would probably work just as well and have no risk of permanence, but I didn't think of that until just now.
I would try and get the voltage as low as you can for stability at 4.6 and then work your way up from there so that you don't overshoot when going for a higher oc. I know all chips are different but im completely stable at 1.26 for 4.6 1.28 4.7 1.35 4.8 1.445 4.9 1.52 5 just to give you an idea of where to start.
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post #12526 of 33678
Thanks Chann3l. I am actually testing 1.26v @4.6ghz now. I am about 5 passes through 10 on IBT. Max temp is 75C. My case is small (with minimal airflow), a Lian Li Pc-A05FN, so really I want low temps more than raw power. Still it is good to know where my limits are. Thanks for posting your voltages. If I pass this I think our chips may be similar. I needed 1.37 for 4.8, and you needed a slightly better 1.35.

Update: It passed @ 1.26v. Max temp was 1C lower @ 75C vs 76C for 1.275v.
Edited by valkeriefire - 2/22/13 at 8:31pm
 
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post #12527 of 33678
Quote:
Originally Posted by valkeriefire View Post

Thanks Chann3l. I am actually testing 1.26v @4.6ghz now. I am about 5 passes through 10 on IBT. Max temp is 75C. My case is small (with minimal airflow), a Lian Li Pc-A05FN, so really I want low temps more than raw power. Still it is good to know where my limits are. Thanks for posting your voltages. If I pass this I think our chips may be similar. I needed 1.37 for 4.8, and you needed a slightly better 1.35.

Update: It passed @ 1.26v. Max temp was 1C lower @ 75C vs 76C for 1.275v.

Sounds like they are for sure and that's awesome. Low temps are better than pushing the oc I only run at 4.9 cause I do a lot of benchmarks no noticeable difference between that and 4.6 in real world applications. those are good temps for air too cause on custom water I hit in the 50s on ibt and before delidding and lapping i hit 80 so your quite a bit below my predelid temps on water. thumb.gif
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post #12528 of 33678
Quote:
Originally Posted by valkeriefire View Post

Thanks Chann3l. I am actually testing 1.26v @4.6ghz now. I am about 5 passes through 10 on IBT. Max temp is 75C. My case is small (with minimal airflow), a Lian Li Pc-A05FN, so really I want low temps more than raw power. Still it is good to know where my limits are. Thanks for posting your voltages. If I pass this I think our chips may be similar. I needed 1.37 for 4.8, and you needed a slightly better 1.35.

Update: It passed @ 1.26v. Max temp was 1C lower @ 75C vs 76C for 1.275v.

You already have some pretty solid results - I ran 4.8 for a long time before delidding because of temperature limitations. Per earlier post w/pics of stress test (Aida64 Extreme Edition / System Stability Test 100% load), I had 4.8 = 1.312v, 4.9 = 1.328v, 5.0 = 1.376v, 5.1 = 1.416v, 5.2 = 1.496. That 3770K is known to be fairly low v, but you seem to be pretty close to a 'sweet-spot' with a very good chip.

Here is a comparison of 3770K from 3.9 GHz to 5.3 GHz (as well as other CPU types) re CPU Queen and also memory read benchmarks...if you compare your current '4.8' you'll see that you are already way up there and if you hit a 'v' wall, ask yourself whether the extra performance is worth the extra 'v's / heat / durability:

http://www.overclock.net/t/1360912/thinking-of-overclocking-cross-platform-results-for-a-3770k-stock-turbo-3-9-ghz-to-5-3-ghz

...not sure what kind of board you are running, but on mine (Asus ROG Max V Ex), I leave LLC on 'ultra' but bumped CPU and DRAM Voltage Frequency from 350 to 450 (out of 500) and CPU Power Phase control to manual / ultra fast and that allows for a slight (may be two to four step) lowering of vCore with the same degree of stability under stress test. I had the same results on another board (Sabertooth z77) after making the same changes....may be it can work for you
post #12529 of 33678
Just wondering is it really worth it removing the IHS and replacing the thermal paste under it, on a 3770k?
post #12530 of 33678
Quote:
Originally Posted by tt-Prodigy15 View Post

Just wondering is it really worth it removing the IHS and replacing the thermal paste under it, on a 3770k?
YES YES YES . You will get a 20- 30 deg temp drop if you use CLP/CLU as the TIM.
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