My Intel I7 990X overclocked at 4.40 GHz! And I7 990X overclocked at 4.5 GHz with new Antec Kuhler H20 620

I was happy that all went well for few weeks now i able to do overclocking my I7 990X. set at 133 MHz FSB x 33 that run at 4.40 GHz on air cooler at stock volts. it really fastest that i ever seen. I knew my processor is unlocked muilt (only on Extreme Edition).

New Antec Kuhler H20 620 has stable my i7 990X overclocked at 4.5 GHz. the CPU Temp between 30 C to 35 C. It did help a lot. Set at 133 MHz FSB x 34 thatt run at 4.5 GHz.

Here is bit of info... When my I7 990X OC at 4.40 GHz, the volts was at 1.336. and it seems to stable. Normal speed at 3.47 GHz the volts was at 0.968 (just under 1 volts) The CPU-Z that i saw on my PC. I tried to get i7 990x up to 4.5 GHz but it did crashed down and was not stable. I think I will stay at 4.40 GHz that still stable all day without problem. Reason it wont go over 4.5 GHz because my RAM run at DDR3 at 1.33 GHz. With 1.33 GHz on ram do fine with 4.40 GHz.

did you try changing the voltage/timing of your ram at all to get to that higher speed?

No, I don't want to damage my new PC.  I'll stick with up to 4.40 GHz with Ram run at 1.33 GHz. That I did bought 6 GB DDR3 at 1.33 GHz. It is pretty fast enough for DDR3. When I did overclocked i7 990X at 4.40 GHz with RAM at 1.33 GHz and PC did went super fast and plenty of power. Please understand that my new pc run for few weeks now.

It's not going to damage the PC instantly if you overvolt but it is going to void your warranty/reduce the lifespan of your CPU if you do...

In any case, it's up to you if you want to do it; though you may want to understand the risks first.

Mike Coyne:

No, I don't want to damage my new PC.  I'll stick with up to 4.40 GHz with Ram run at 1.33 GHz. That I did bought 6 GB DDR3 at 1.33 GHz. It is pretty fast enough for DDR3. When I did overclocked i7 990X at 4.40 GHz with RAM at 1.33 GHz and PC did went super fast and plenty of power. Please understand that my new pc run for few weeks now.

That's nice you have those clock speeds and trying not to damage your new PC 

just noticed that nothing was mentioned regarding TEMPS ! What temps under full load ?

So how 'super fast' and what temps ?

@Mke Coyne you might want to take a look at this thread  Bios settings for overclocking your rig. (A guide for the rest of us) http://hothardware.com/cs/forums/t/53962.aspx

post some screens of CPU-Z and either CoreTemps or Real Temps ..what are you using to test for stability ? and monitoring your temps under full load ?

*** Note the reason that thread got started was due to someone having a high lock speed with cpu temps in the uppper 80c C  !

& that will certainly shorten the life and performance expectancy of your cpu as Taylor previously mentioned..

I did set  at x33 and  133 MHz FSB and Intel SpeedStep was disabled and all rest set by AUTO. and In BIOS CPU Temp stay at 35 C to 50 C with OC at 4.49 GHz with air cool and still have good air flow in CM HAF 812. It seem doing good and It never get over 80 C but still under 80 C. Rrplay, Have you check out my photo of my custom PC in MY Rig?  I did read the forum about Bios settings for overclocking . I am agree with you and Taylor about the risk. I

I wrote 4.49 GHz. That was mistake . Correction is 4.40 GHz.

Mike Coyne:

I did set  at x33 and  133 MHz FSB and Intel SpeedStep was disabled and all rest set by AUTO. and In BIOS CPU Temp stay at 35 C to 50 C with OC at 4.49 GHz with air cool and still have good air flow in CM HAF 812. It seem doing good and It never get over 80 C but still under 80 C. Rrplay, Have you check out my photo of my custom PC in MY Rig? .....

I did look at this pics of your rig and it sure looks nice

I never mentioned that your temps were anything near 80C just interested in the CoreTemp or Real Temps of the CPU under full 100% load .Some folks use OCCT Linpack ,Prime95,LinX & IntelBurn whichever you choose just keep an eye on the temps under full load.

If possible to post a screenshot of the apps [CPU-Z ,Core or RealTemps  monitor app & Some stress app ] as  in the Bios or video OC threads even better ..

Anyhoo sure looks like a nice rig Mike and know you are enjoying it and having a lot of fun with it as well.

I can tell you, when I overclocked i7 990X at 4.40 GHz. the Real Temp was about 90 F (? C) Reason my ASUS Motherboard has Xtreme Full Power is Enable in bios. It helped better performance when set in OC.  ASUS MB set by default by 133.6 that look lke OC at 4.41 GHz. It still good at 1.336 volts without any problems.  I'm glad you like my custom PC that you saw in MY RIG forum. It is enough for me to know about OC. Let's move on with other stuff. Thanks.

Ok here is the post of Core temp.

Mike Coyne:

Ok here is the post of Core temp.

actually more interested in what kind of temps you have under full 100% load with the OC at 4.4 GHz

..,but if you want to move on >> OK with me.

I set my i7 990x OC at 4.40 GHz and i did use the programs like OCCT Linpack and let it run for 30 min and i7990x did hold on at 75 C and drop at 70 C and went back to 75 C. it run at 4.40 GHz at 100 Percent of load. The report found no error with all stuff. I know you would like to know.  I7 990X fan run from 2,556 to 2636 RPM. It get bit warm but it seem doing good job.

Mike Coyne:

I set my i7 990x OC at 4.40 GHz and i did use the programs like OCCT Linpack and let it run for 30 min and i7990x did hold on at 75 C and drop at 70 C and went back to 75 C. it run at 4.40 GHz at 100 Percent of load. The report found no error with all stuff. I know you would like to know.

Hey Hey ! Way to Go  Mike ! Nothing like being sure about such things.as temps under full loads.

If like you can run the IntelBurn In app all threads Max settings should take about 5 minutes watch temps and you can actually lower Vcore until you are unable to pass the test...this way you may be a able to have a lover Vcore and lower temps overall Having CPU-Z open and watching the Core Volts is pretty good for this.

.It usually a compromise of sorts and peace of mind as well.

Looks like your having some Fun and doing some good work with your rig.

thanks for sharing

oh yeah almost forgot  while your having some fun with OCCT you might as well take a look see at the graphs the app creates when you get around to running the OCCT PSU tests and stuff.Pretty good way to get an idea how your PSU is delivering the juice.

Have Fun !

No problem ! and Have great day.

Hey, Rrplay. Last thing I want let you know I did run on IntelBurn test and set at MAX with 4.40 GHz and It got hot  about 80 to 87 C . After test was done the the report show the I7 990X (OC at 4.40 GHz) is stable and did pass the test. Volts was at 1.344 (normal for to run at 4.40 GHz) YAY!

@ 80-87 you might want to think about a aftermarket cooler to help with the temps. A OC'd chip kept with in a good range will last forever, an OC'd chip at the edged of its thermal range reduces it life.

Der Meister:

@ 80-87 you might want to think about a aftermarket cooler to help with the temps. A OC'd chip kept with in a good range will last forever, an OC'd chip at the edged of its thermal range reduces it life.

Thanks for chiming in Der Meister and that is so true.In the upper 80s C range at 4.4GHz  but not if it were mine.

here is  a link for the build http://hothardware.com/cs/forums/t/56598.aspx?PageIndex=1  [posted for convenience]

@Mike there is a reason as you noticed from running the IntelBurnIn app as suggested, to give us real idea of the temp under a full load.Generates a bit more heat than OCCT .for sure .

Best to back off the OC for now  to be at least in the 60sC [compromise the OC ] until you get a better cooler.  when ya get chance post a pic or 2 of the inside of that chassis.There are some real case fan wizards around here as you may have noticed in the other threads.

if you want some feed back on a cpu cooler cooler plenty of help around here .and your likely to be back at 4.4 GHz in no-time.with much cooler temps.

Rrplay, My i7 990X is back to normal speed at 3.47 GHz. Range in about 25 C to 40 C . It did came with Intel Xtreme heatsink with copper base and 4 copper pipe and fan up to 2636 RPM. The heatsink is massive huge that i seen. It is cool heatsink that Intel build for I7 Extreme Edition and they said it can handle little OC like at 4.0 GHz to 4.40 GHz. When I7 990X OC at 4.40 GHz with stock FSB (133 MHz) x33  and got about 35 C to just under 70 C.  I did spend bit over $1800 on my custom PC.. I'm done with all test that you give me to check If 4.40 GHz is stable. I know it still hold on. Thanks for offer me about water cooler system. Dont worry about me and my PC. I will handle it on my own. It have run about 1 month and still strong in normal or OC speed. And Thanks for great talk about OC stuff and provide me few of programs to run during OC. Let's move on with other stuff.

Here is Intel HeatSink came with my I7 990X. (look like this kind) has 8 copper pipe. and set in "P" Mode (performance) and fan spin up to 2636 RPM.  in post I was wrong about 4 pipe. (it has 8 pipe)

Ok thanks for getting back and yep the Intel Extreme cooler that you have should be good enough and no real need for an aftermarket cooler ..One would think by it's design it would do a bit better job at 4.4 GHz @ 75C or 85C Would have expected to be in the 60sC especially with OCCT

.Some times folk notice an improvement with temps under load after inspecting the TIM application and applying it again.Or using a different brand and getting maybe a 5C-7C better cooling performance under load..Def well worth it.the time and effort.to reapply TIM and check again,,,

Another Example would be : Some have notifiable improvements with temps under load after 30 minutes of OCCT to pre-heat and tightening the mounting screws a bit .This also would depend on the viscosity of the TIM used like IC Diamond .

No problem to move on after all you can load different Bios profiles and how much of the time are you at 100% cpu percent load?

Still maybe a good idea to re-evaluate the TIM application and Extreme Cooler Instal at 4.2GHz > OCCT Linpack > Would be looking for mid 60sC If you want to move on fine OK with me.Thanks for the  nice little discussion and no real need for text when screenshots of the apps provide all the OC and thermal  info at a glance and a Disclaimer [thanks 4hams ] is elsewhere in this forum..

Thanks for wrote me back . You was right person  that  able gave me a ansewer to my question about pre built and OC stuff. I'll keep eye on temp when OC. I trust my new PC can handle from 3.47 GHz to 4.40 GHz. I'm glad that I able to use OCCT. programs. It was good thing to make it is stable at 4.40 GHz.with this programs, OCCT.  Last thing to say, Thanks for help me out and explain all about stuff.  Rrplay, you can write a note  to me on HH anytime.  And have a great week!

Mike Coyne:

Dont worry about me and my PC

Mike Coyne:

I will handle it on my own

Mike Coyne:

Let's move on with other stuff.

I've moved on,.......