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i3-550 Overclock help! - Page 2

post #11 of 23
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Quote:
Originally Posted by Voltage_Drop View Post
Yes it does mean that it will be at 4GHz all of the time. And no I do not have a stock cooler LOL. I said at stock frequency he should be around ~21c/idle maybe a little more. The stock frequency for this chip is 133x24, not 160x20 LOL. Check my sig for validation on air. These are 32nm chips, its not very hard to keep the temps in check on air unless you did something horribly wrong.
What he was referring too was my stock cooler. The default is 133x24 but the reason i made it 160x20 was so my mobo would recognize my DDR3 1600 RAM at 1600 and not 1333. The reason for x20 was because x24 was making my computer freak out because i didn't increase the vcore. now the vcore has been risen to 1.164v to accommodate the x24 multiplier but so have my temps, I idle at ~40c.
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post #12 of 23
I'm running 4.56ghz on a Core i3 550 @ 1.424 volts 24/7. I peak at 82C under full loads with my Tuniq 120 Extreme on low and around 78C on high (but it is loud, so I leave it on low unless I'm benching a lot - gaming and regular apps it never breaks 70-72C)

I'd say that < 80C you are fine under an extreme load. < 1.4v you are fine. No, you can't do 1.4v on a stock cooler. If you are already hitting 72C on your temps, you don't have much room left to go.

Just slip it more volts until it's Prime 95 stable and still under 80C and call it a day until you get a better cooler.

NOTE: I'm idling 29-30C at 4.56ghz with my Tuniq on low speed.

NOTE 2: "SB heatsink...its running at about ~59c." Your SB could care less about 59C. Get back to us when it breaks 70C.
Edited by LiquidKaos - 1/26/11 at 7:18pm
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post #13 of 23
Thread Starter 
Quote:
Originally Posted by LiquidKaos View Post
I'm running 4.56ghz on a Core i3 550 @ 1.424 volts 24/7. I peak at 82C under full loads with my Tuniq 120 Extreme on low and around 78C on high (but it is loud, so I leave it on low unless I'm benching a lot - gaming and regular apps it never breaks 70-72C)

I'd say that < 80C you are fine under an extreme load. < 1.4v you are fine. No, you can't do 1.4v on a stock cooler. If you are already hitting 72C on your temps, you don't have much room left to go.

Just slip it more volts until it's Prime 95 stable and still under 80C and call it a day until you get a better cooler.

NOTE: I'm idling 29-30C at 4.56ghz with my Tuniq on low speed.

NOTE 2: "SB heatsink...its running at about ~59c." Your SB could care less about 59C. Get back to us when it breaks 70C.
lol ok wasnt sure if that was considered hot thanks for your advice still running my prime 95 been on for 2 hours with zero errors each core has averaged out to ~70c. What bios features do you have enabled??? I have all the power saving ones(speedstep, C-State, C1E support) and HT disabled and would like to enable them if possible??
Edited by Boscogn - 1/26/11 at 7:28pm
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post #14 of 23
Hyper Threading may boost performance somewhat with certain applications, but it will add even more heat and its not worth breaking the 80C mark for it, in my opinion.
    
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post #15 of 23
Also, I've heard that with temps over 80C, the heat alone can start to affect stability
    
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post #16 of 23
Quote:
Originally Posted by Boscogn View Post
lol ok wasnt sure if that was considered hot thanks for your advice still running my prime 95 been on for 2 hours with zero errors each core has averaged out to ~70c. What bios features do you have enabled??? I have all the power saving ones(speedstep, C-State, C1E support) and HT disabled and would like to enable them if possible??
I'm not stable at 4.56ghz with the power saving options on. And yes, like the poster above stated, once you break into the 82-83-84C the i3 destabilizes. I'm half debating going under water, but since I'm already at 1.424v @ 4.56ghz I doubt I can get much more on water. (At least not enough to justify the cost of the WC and the additional voltage on the chip)

My board posts at up to 5.2ghz, but nothing from 4.6-5.2ghz will boot into windows. I think my 550 has a serious wall at 190 BCLK.

ADDED: On a side note, my RipJaw 8-8-8-24 4GB kit is running 7-8-7-24 1T @ 1.72volts and loving it. I'm staring at a set of 9-9-9 8GB I got on sale for $69 and debating running it.. but I know its not going to get that low on the timings
Edited by LiquidKaos - 1/26/11 at 9:13pm
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post #17 of 23
Thread Starter 
Quote:
Originally Posted by LiquidKaos View Post
I'm not stable at 4.56ghz with the power saving options on. And yes, like the poster above stated, once you break into the 82-83-84C the i3 destabilizes. I'm half debating going under water, but since I'm already at 1.424v @ 4.56ghz I doubt I can get much more on water. (At least not enough to justify the cost of the WC and the additional voltage on the chip)

My board posts at up to 5.2ghz, but nothing from 4.6-5.2ghz will boot into windows. I think my 550 has a serious wall at 190 BCLK.

ADDED: On a side note, my RipJaw 8-8-8-24 4GB kit is running 7-8-7-24 1T @ 1.72volts and loving it. I'm staring at a set of 9-9-9 8GB I got on sale for $69 and debating running it.. but I know its not going to get that low on the timings
I still have prime running still no errors but have a question about RAM timings. I've been reading and some people say 1333 RAM is better than 1600?? because of the FSBRAM ratio I'm at 4:20 right now with 1600 @ 9-9-9 timings. Should I worry about dropping the 1600 to 1333 and tighten the timings up?? also i've read that a bclk of 200 will give you a better ratio to your memory running at 800 mhz (1600 dual channel). Should i lower my multiplier to get the 200 bclk??
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post #18 of 23
Quote:
Originally Posted by Boscogn View Post
I still have prime running still no errors but have a question about RAM timings. I've been reading and some people say 1333 RAM is better than 1600?? because of the FSBRAM ratio I'm at 4:20 right now with 1600 @ 9-9-9 timings. Should I worry about dropping the 1600 to 1333 and tighten the timings up?? also i've read that a bclk of 200 will give you a better ratio to your memory running at 800 mhz (1600 dual channel). Should i lower my multiplier to get the 200 bclk??
Your BCLK of 160 should be good but you are having heat issues seriously. I wouldnt go any further until you correct the temps. I have taken the liberty of downclocking my CPU to 4.03 GHz with HT ON for 15min of Prime to show my temps.

Yes a higher Bclk will in fact increase performance over a lower Bclk. And tightening your timings will help but you dont have to lower your frequency to 1333, unless you get really tight with the timings. You are good at 1600MHz which is what your RAM is rated for, correct?
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post #19 of 23
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Quote:
Originally Posted by Voltage_Drop View Post
Your BCLK of 160 should be good but you are having heat issues seriously. I wouldnt go any further until you correct the temps. I have taken the liberty of downclocking my CPU to 4.03 GHz with HT ON for 15min of Prime to show my temps.

Yes a higher Bclk will in fact increase performance over a lower Bclk. And tightening your timings will help but you dont have to lower your frequency to 1333, unless you get really tight with the timings. You are good at 1600MHz which is what your RAM is rated for, correct?
Yes RAM is rated at 1600 i bought 1600 because DDR2 800 was so great on my lga 775 build i wanted something similar.

Thank you for the screen shot that puts things into perspective for me with your CM 212 your able to OC 200mhz more with average temps ~15c cooler than what I get with HT on and stock cooling. thats one hell of a 30 dollar investment!! I think I'm ordering one right now hehe. How loud is it?? yours is in a push/pull what fans did you use?

So I was thinking of trying a bclk of 200 with a 18-19 multiplier and messing with vcores again to find lowest one that is stable. I know I will net more performance out of a higher multiplier but I'm just weird i guess about bottlenecks even if i wont notice the difference. I think the 200 bclk will put me at a 4:1 ratio instead of 4:2 right with 1600 RAM?
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post #20 of 23
Yes the 212 is a decent coler for the price. i am using some older cooler master fans that are pulling .56A, Im not sure of the actual CFM or dB level. It can get loud if I crank them up for some bench runs but for moderate levels I turn them down with my fan controller.

Just keep experimenting with your CPU and you will find what suits your performance needs the best. I would definitely agree you should get a different cooler before you go any further. the max temp for the chip is about 72c, so I would stay under that if you want to keep it for a while
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