2500kOC help

[Sm0k3]

I have a 2500k that wont seem to be stable, so im guessing its me not knowing how to over clock yet. I'm looking to get a 24/7 OC at 4.3 GHZ with my gigabyte z77x-UD5H motherboard. Can anyone tell me a general voltage that it needs because I have kept the voltage at auto, also is there any other setting I should worry about besides the clock speed and the voltage such as PLL or VTT or just recommendations, thanks.

[Sm0k3]

BTW I have OC head room cause i have an h100i

[Godlygamer23]

BTW I have OC head room cause i have an h100i

Even though it's on Auto, what's your current voltage? I would imagine a general voltage would be about...1.2. You could certainly go lower, but I think that would be a good general voltage.

[Sm0k3]

CPUz says its at 1.296v under prime 95 load @4.3GHZ

[Godlygamer23]

CPUz says its at 1.296v under prime 95 load @4.3GHZ

And it's not stable? That voltage is a little high, sadly.

[Sm0k3]

I just blue screened last night so no.

[Godlygamer23]

How did you go about overclocking? Did you just jump to 4.3GHz? If not, what kind of increments did you go by?

[Wats]

Get it off of auto... Open cpu-z and prime95, you'll see your current Vcore.

 

You just have to keep those Prime temps below 80c. I wouldn't go past 1.55V. Intel claims 1.52V is perfectly safe for 24/7.

 

LLC is important, keeps your Vcore stable under heavy load. Set that to at least 50%. 100% LLC will most likely compensate too much and you'll end up with a higher Vcore than you set...under load.

 

Don't worry about PLL and VTT until you understand the general stuff.

 

 

 

You will never reach P95 temps in games, benchmarks or applications. Just saying...

[Sm0k3]

How did you go about overclocking? Did you just jump to 4.3GHz? If not, what kind of increments did you go by?

I guess I jumped right up to 4.3

[Sm0k3]

Get it off of auto... Open cpu-z and prime95, you'll see your current Vcore.

 

You just have to keep those Prime temps below 80c. I wouldn't go past 1.55V. Intel claims 1.52V is perfectly safe for 24/7.

 

LLC is important, keeps your Vcore stable under heavy load. Set that to at least 50%. 100% LLC will most likely compensate too much and you'll end up with a higher Vcore than you set...under load.

 

Don't worry about PLL and VTT until you understand the general stuff.

 

 

 

You will never reach P95 temps in games, benchmarks or applications. Just saying...

Thank you for the tips, much appreciated.

[Godlygamer23]

I guess I jumped right up to 4.3

Go back to stock speeds(set a voltage of about 1.2 for general. Later as you become used to overclocking, you can try setting something lower), and slowly bump it up. Maybe by 100 or 200MHz. Each time, stressing it for about 1 to 2 minutes. Once reaching 4.3GHz(if you do), stress it for about 10-20 minutes. Some people even stress it for about 24 hours. This is to make sure it's stable. As Wats said, P95 temps are unrealistic and you'll never achieve them in real life scenarios.

[Sm0k3]

Is that everything I need to know for a general overclock

[Godlygamer23]

Is that everything I need to know for a general overclock

I think so.

[Wats]

Just take baby steps. Remember you don't have to run a full blown 24hr p95 run every time you bump the multi. Heck, I just do a cinebench run then jump right back into the play ground.

 

Oh and you don't even need a 24hr P95 test for full blown stability. 24hrs in P95 just means you're stable in P95 for 24hrs. Use more than one stability test to make good and sure.

 

After you get the chip nice and toasty, get in there and literally feel your mobo's heatsinks. They shouldn't instantly leave burn marks on you..

 

 

 

DL HWMonitor, it'll be your bestie :P

[Ddm5]

Get it off of auto... Open cpu-z and prime95, you'll see your current Vcore.

 

You just have to keep those Prime temps below 80c. I wouldn't go past 1.55V. Intel claims 1.52V is perfectly safe for 24/7.

 

LLC is important, keeps your Vcore stable under heavy load. Set that to at least 50%. 100% LLC will most likely compensate too much and you'll end up with a higher Vcore than you set...under load.

 

Don't worry about PLL and VTT until you understand the general stuff.

 

 

 

You will never reach P95 temps in games, benchmarks or applications. Just saying...

Saying that mate, I know I'm jumping in here, say if I were to test my OC that is currently 4.8Ghz @1.36V, with my chip, would you expect me to be able to hit 5Ghz?, highest temp being 75'c.

[Godlygamer23]

Right. I only mentioned the 24 hour overclock for final stability.

[Wats]

Saying that mate, I know I'm jumping in here, say if I were to test my OC that is currently 4.8Ghz @1.36V, with my chip, would you expect me to be able to hit 5Ghz?, highest temp being 75'c.

Maybe 4.9 if you crank the AC on full blast during a stability test. You'll just have to see for your self.

[Godlygamer23]

Maybe 4.9 if you crank the AC on full blast during a stability test. You'll just have to see for your self.

And blowing it directly on your hardware.

[Ddm5]

Maybe 4.9 if you crank the AC on full blast during a stability test. You'll just have to see for your self.

Yea, I've got the headroom for the voltage, but since I don't own a water cooler / all in one, what would you say would be the safe temps to go up to on air?

[Wats]

Yea, I've got the headroom for the voltage, but since I don't own a water cooler / all in one, what would you say would be the safe temps to go up to on air?

80-85c. no further.

 

You will have to worry about mobo temps. People forget about that, mobos can burn the hell out of you and your neighborhood.

[Ddm5]

80-85c. no further.

 

You will have to worry about mobo temps. People forget about that, mobos can burn the hell out of you and your neighborhood.

Hmmm, I have a large ish fan like a desk fan right next to me so I could have that blowing onto the motherboard whilst trying to get 5Ghz.

[Wats]

Hmmm, I have a large ish fan like a desk fan right next to me so I could have that blowing onto the motherboard whilst trying to get 5Ghz.

I've done that.  Not as good as nice, cold, DRY air from the AC or from a window during a Winter night.

 

Don't just start P95 once you're in Winders... Do a cinebench or something less stressful so you can get an idea of what your temps are like first... A good way to judge it is if you're hitting 70 with cine, you'll prolly fly past 80c in prime.

[Godlygamer23]

Good idea Wats.

[Ddm5]

I've done that.  Not as good as nice, cold, DRY air from the AC or from a window during a Winter night.

 

Don't just start P95 once you're in Winders... Do a cinebench or something less stressful so you can get an idea of what your temps are like first... A good way to judge it is if you're hitting 70 with cine, you'll prolly fly past 80c in prime.

How many cores does Cine max out?, the full 4 or lets say 2? (I'll assume 4), Mate, @4.8 the highest I'm getting is roughly 50-65 on the hottest core, 55 max on the coldest and that's the same as people who use the stock cooler.

[Wats]

How many cores does Cine max out?, the full 4 or lets say 2? (I'll assume 4), Mate, @4.8 the highest I'm getting is roughly 50-65 on the hottest core, 55 max on the coldest and that's the same as people who use the stock cooler.

Cine will load every thread. Yeah I see 4.9 in your future, but it all depends on what you're comfortable with.

 

 

lol you thread jacker B)