Upgrade my 2500k ?

[illuz]

Sod buying it for her !! buy it for myself. Well to be fair prefer Jack myself.

Hmm it seems i may just stick the 2500k out a little longer. maybe over volt it slightly more as i wont be that bothered if it dies in a year. If i can gt 4.8ish out of it i would be really happy.

Again, I highly doubt you'll see the difference outside of benchmarks.

 

[hardkore]

Out if interest, what volts are you using to get to 4.6ghz? I can get mine up to 4.8ghz stable with 1.385v and never goes over 76c using intel burn test.

 

[Marine-RX179]

Just for reference my i5 2500Kat 4.6GHz is at 1.375v....don't want to risk higher voltage than that.

 

[Devrij]

Just for reference my i5 2500Kat 4.6GHz is at 1.375v....don't want to risk higher voltage than that.

Is that in BIOS or in CPU-Z? It's a touch higher than mine (I think I had 4.8GHz at those volts), but it isn't miles off.

I have also stuck with the c1.35V limit for my 24/7 clocks (I backed off to 4.2GHz once I was done benching just to keep everything nice and quiet). Temps are fine, but I don't want to run 1.4V through my chip all day. Even if it means 5GHz Maybe if they bring out a new line of tasty chips I'll go balls to the wall and see how long it lasts. I just remember my wolfdale chip degrading quite badly at the end from the higher volts so I've always been wary of doing the same with newer small-process silicon.

 

[Pabl0]

I have to run 1.4 on my 3750k @4.5 and that's folding 24/7 but temps are great as it's water cooled and even so I doubt the cpu will die, motherboard would go before I would think. If it does ill get a 3770k! Hopefully would be a better clocker.

 

[Davedree]

Is that in BIOS or in CPU-Z? It's a touch higher than mine (I think I had 4.8GHz at those volts), but it isn't miles off.

I have also stuck with the c1.35V limit for my 24/7 clocks (I backed off to 4.2GHz once I was done benching just to keep everything nice and quiet). Temps are fine, but I don't want to run 1.4V through my chip all day. Even if it means 5GHz Maybe if they bring out a new line of tasty chips I'll go balls to the wall and see how long it lasts. I just remember my wolfdale chip degrading quite badly at the end from the higher volts so I've always been wary of doing the same with newer small-process silicon.

Thats why i use offset and power saver modes on my 2600k.
Same as my b55 that was 4.2ghz with cool and quiet enabled.

 

[Randall8686]

cant remember of the top of my head what voltage its on. What is the absolute max voltage i should run through this chip ? dont use it all that often tbh 4-5 hour a week actually using it. it gets left on doing nothing quite often will check what voltage im on later and report back

 

[Devrij]

cant remember of the top of my head what voltage its on. What is the absolute max voltage i should run through this chip ? dont use it all that often tbh 4-5 hour a week actually using it. it gets left on doing nothing quite often will check what voltage im on later and report back

To be fair, as long as you have speedstep on you won't be running your max voltage very often, so you could probably get away with more if your temps allow it (which I would expect them to unless your cooler is pretty poor).

As for 1.4V and folding 24/7, that must rinse your leccy bill! How long has it been going at that rate out of interest? I know in the early days it was suggested 1.35V was the recommended 24/7 limit, but I haven't really kept tabs on it since the chip was released and I left it as it was. My temps are fine so I might have a little tinker with my chip for the lulz. I'm pretty sure I did a 5GHz run at one point, but I'll have to see what volts that was at.

EDIT: it was 1.4V, wahey! Don't think it was very stable though Would be nice to have a safe and stable 5Ghz 24/7 clock
http://forums.overclockers.co.uk/showpost.php?p=20054244&postcount=879

 

[Pabl0]

To be fair, as long as you have speedstep on you won't be running your max voltage very often, so you could probably get away with more if your temps allow it (which I would expect them to unless your cooler is pretty poor).

As for 1.4V and folding 24/7, that must rinse your leccy bill! How long has it been going at that rate out of interest? I know in the early days it was suggested 1.35V was the recommended 24/7 limit, but I haven't really kept tabs on it since the chip was released and I left it as it was. My temps are fine so I might have a little tinker with my chip for the lulz. I'm pretty sure I did a 5GHz run at one point, but I'll have to see what volts that was at.

Not that long in this guise, but the bill has never been a OMG! moment, in fact wasn't there a sites that would work it out for you? I seem to remember something like that.

At standard its 1.25v or something like that, so the change to 1.4 real isn't massive in terms of £.

 

[Devrij]

Not that long in this guise, but the bill has never been a OMG! moment, in fact wasn't there a sites that would work it out for you? I seem to remember something like that.

At standard its 1.25v or something like that, so the change to 1.4 real isn't massive in terms of £.

I was just thinking in general 24/7 folding (are you using the gpu as well?) would be pulling a lot of wattage.

When you say "not long" are we talking weeks or months? Just trying to get an idea of whether your chip is going to melt shortly, or if it's been going on long enough to call it "safe"

EDIT: From TH

We've learned through trial, error, and dead processors that voltage levels beyond 1.45 V at above-ambient temperatures can kill an Intel CPU etched at 32 nm (Sandy Bridge-based parts included) very quickly. Those same processors die a fairly slow death at voltage levels between 1.40 V and 1.45 V (somewhere between weeks and months on our test benches). And we're expecting more than a year of reliable service from the parts we've dutifully kept below 1.40 V. Not all motherboards are perfect however. Voltage instability on a particularly cheap motherboard fried one of our processors when it was set to only1.38 V. Subsequently, you've seen us use 1.35 V for the overclocking tests in older motherboard round-ups, embracing 1.38 V to 1.40 V in more recent pieces covering higher-end platforms.

Doesn't look good for my 5GHz 24/7 clocks I think I'd need to go under water for that to work.

 

[Randall8686]

lol i can only imagine what my leccy bill would be like folding with a 480gtx i had to upgrade my 550watt psu as it kept crapping out lol

 

[joeyjojo]

Not that long in this guise, but the bill has never been a OMG! moment, in fact wasn't there a sites that would work it out for you? I seem to remember something like that.

At standard its 1.25v or something like that, so the change to 1.4 real isn't massive in terms of £.

From 1.25 to 1.4 is a 17% increase, which means a 36% increase in power draw (1.1667^2 = 1.3611).

From 3.3 GHz to 4.5 is a 36.4% increase.

So the whole overclock will eat about 85.7% more power than at stock. At about 150 W stock that's about 278 W overclocked. Some £146 / year more to run the overclock 24/7 than not, depends on your tariff.

It's the presence of the square in the voltage bit which means it's good to keep the volts down. When you raise the clock you get "value for money" as your power consumption goes up linearly. With the volts you get more and more power draw for less computing power return.

 

[Randall8686]

but unless you fold (i dont) im not going to notice hardly any difference in my leccy bill i would imagine game play of less than 3 hours per week with a total of the pc on 10 hours a week the rest of the 10 hours just browsing the net

 

[joeyjojo]

Probably not. An extra 130 W over an hour is 0.13 KWh. If you leccy costs 13 p/KWh (it'll be around that) that's 1.69 p/hour extra on the bill. Not going to notice a few quid a year.

 

[Devrij]

but unless you fold (i dont) im not going to notice hardly any difference in my leccy bill i would imagine game play of less than 3 hours per week with a total of the pc on 10 hours a week the rest of the 10 hours just browsing the net

No you'll be fine. Apologies for derailing your thread, but overclocking further seems to be the short-term answer to your problems. It seems like the 1.37V-1.4V is really the tops for these chips before you end up in dangerous territory, but if you are using your chip that lightly, you should be safe enough. I certainly wouldn't feel comfortable folding at 1.4V 24/7, but your chances of reducing your chip's lifetime are slim with only 3hrs of single-core load a week. If you're planning to upgrade once a viable option shows up you can take a few more risks as well.