Core 2 Due @ 4.27Ghz

mythrandyr

mythrandyr

mythrandyr

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Joined
19 Sep 2008
Posts
344
Hi guys,

Ok, so 1st off i know absoluteley naff all about OCing and i've only done this as an experiment since i plan on upgrading to an I7 920 (950 would be nice :) or AMD AM3 955 at the end of the month anyway so if the mainboard only lasts a couple of weeks then i can live with it.

I found some help on various sites on the internet, specifically review sites, and to cut a long story short i have overclocked, at my 1st attempt, a stock E8500 3.16Ghz processor all the way up to 4.27Ghz using the following settings:

AI overclock tuner: manual, CPU Ratio Setting: 09.5, FSB Frequency: 450
CPU Voltage: 1.4V, Northbridge Voltage: 1.3V, FSB Termination Voltage: 1.2V

I've set this up and it has been running stable now for 8 hours or so with no crashes, bsods or bios failure's. All in all, i am well impressed considering that it is my first attempt at such a large overclock and that i don't know too much about how to lower or raise the core clock speed (infact nothing if i were honest and i know even less about what damage this is doing to my components)

My Overclocked rig consists of the following equipment:

Antec Skeleton Performance Chassis,
1200W Thermaltake Toughpower Modular PSU,
Intel Core 2 Duo E8500,
Zalman CNPS9500A-LED CPU Cooler,
Asus P5Q3 Deluxe P45 Motherboard,
4GB Corsair CM3X2046-1333C9DHX Dual Channel Memory.

As far as i am aware no other modifications need to be made to dram timings and everything can be left at it's default settings other than the settings that i have listed above.

I don't know if this will be useful to anyone here but if it is, good luck with overclocking you're system (although, by then i would have probably cooked my system if it carries on running at these kinds of speeds :) if only i could get the FSB to go over 450)

laters,


Myth.
 
Agree with p4radox, give it some ORTHOS for a bit, that'll tell you if it's stable ;) with my first OC I thought everything was fine and dandy until it failed ORTHOS 30 seconds in! haha.

Sounds like a rather immense OC to me, but I know the newer Core2Duos can be OC'd a lot more than my lowly 6850. Congratulations on your first one, it's fun once you get over the initial fear isn't it?

I hope Samsung's comment is on the ironic side...any OC on your first go feels like an achievement, regardless of how many MHz
 
Yah sorry that was a little harsh of me. Its very very impressive for your first clock and you should be very happy with it. Also the more you learn and play with the settings im sure theres more speed to be unleashed.
 
yeah but as is the way of things like this it is in our nature to try and excell ourselves or improve on what we already have infront of us. I am ignorant of the true mechanics of overclocking, i merely followed a set of instructions that was made readilly available to me rather than experiment and learn the knowlege for myself.

I'm still very ignorant as regards underclocking the processor from 4.27Ghz and i am still ignorant also about the damage that it is doing to my system, for example as soon as i made my post here, my pc crashed for the 1st time in roughly 6 hours although i believe that the usb speakers that i have conflicted with other hardware in some way but i will perservere and try more settings before i get my new system built up next week (if i get it built up at all at this moment in time, since i cant descide on what new platform i want, i'm thinking of just overclocking this rig and waiting for the I5 clarkdale to come out)

I did try some programs before it crashed though, but they were old games such as thief deadly shadows and call of jaurez and also some apps but just basic ones like winamp. All of the programs did however work pristinely although i am admittadly a little dissapointed since i could not tell much of a performance difference between an overclocked processor and stock processor

laters,


Myth.
 
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It's highly unlikely that you'll be doing any damage to your gear. You might be reducing the lifespan of your CPU from 15 years to 10 years, but that's nothing to be concerned about!

That's a really nice OC, but it definitely needs to be stress-tested. It's the only way to be sure that the system's stable - you don't want it to lock up when you're doing something important because it's a tiny bit unstable. Download Prime95 or OCCT and run a torture test. If it passes 4-8 hours then it's pretty stable.

You're not going to notice the overclock in Winamp or in old games. An OC from 3.16 to 4.27 is definitely going to make a difference in newer games, though.

Oh, and congrats on the first OC :)
 
I assume you did your overclocking in small increments? Or increments of some description. If that's the case, to reduce your overclock back it's simply a case of putting in the values into your BIOS like you did on the overclock.

EG I went up to 3.8GHz on mine, but it wasn't very stable, so I simply typed in the FSB and VCore values that I knew had been stable for 3.6 GHz, on the way up to 3.8. Does that make sense?

Essentially, you've performed the very mechanics that you have said you are ignorant of. By increasing the FSB you've increased the frequency/speed of the processor, and increasing the VCore allows the processor to remain at higher frequencies. You might be overcomplicating things in your head, as it's relatively straightforward :) It's easy to keep second-guessing yourself when something's new.

Here's a couple of guides that were very useful for me:

http://www.ocforums.com/showthread.php?t=515316 - describes in detail exactly what you are doing to the CPU

http://forums.overclockers.co.uk/showthread.php?t=17612922

Oh, and as long as your temps are reasonable (say, below about 70 Celcius) the damage is as Mattus says...you'll have got 3 new computers by the time your chip has had it!
 
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