2500k and 3570k for quiet PC?

[grandpatzer]

I'm currently running a locked Intel i5 3.4Ghz it's using 1.05v vcore, it has a 500rpm 120mm fan and a Mugen 2 rev. B.
But I would like to have more speed, maybe 4.0 or even 4.2Ghz.

Do you guys think this is possible with unlocked CPU?

I know the 3570k is slightly better clock for clock, also it can handle more heat(?) but in return gets a bit hotter (?).

My guess is even 1.12v is propably fine, maybe I need push pull on my cooler then.

 

[gpse]

1.05 vcore under load? does it idle around 0.9v? or is the voltage fixed?
I say overclock what you have, just watch the temps, my 2600k does 1.24v stock under full load, 0.9v idle.

 

[grandpatzer]

1.05 vcore under load? does it idle around 0.9v? or is the voltage fixed?
I say overclock what you have, just watch the temps, my 2600k does 1.24v stock under full load, 0.9v idle.

I have put in BIOS undervolting, the voltage is fixed in BIOS so it never goes up/down atleast not alot.

Also my CPU is locked, I want buy a unlocked CPU

 

[IntelEnthusiast]

I had an Intel® Core™ i7-2600K with a Cooler Master Hyper 212 + with 2 fans in a push/pull set up. With the Antec Sontana case it runs really quiet. My current system with the Intel Core i5-3570K and the Corsair H100 is loud as all heck with the Corsair Graphite 600tm.

So there is more to it then just the processor and the cooler the case makes a huge difference.

 

[WhoBeDaPlaya]

4.2GHz (4.5GHz) is readily doable with the 3570K (2500K) without an insane amount of voltage or temps.

 

[T_Yamamoto]

4.2GHz (4.5GHz) is readily doable with the 3570K (2500K) without an insane amount of voltage or temps.

But you could push the 2500k higher without worrying too much temp increase

 

[2is]

But you could push the 2500k higher without worrying too much temp increase

He accounted for that, and his figures are pretty much on point from what I've seen and experienced.

 

[tweakboy]

I'm currently running a locked Intel i5 3.4Ghz it's using 1.05v vcore, it has a 500rpm 120mm fan and a Mugen 2 rev. B.
But I would like to have more speed, maybe 4.0 or even 4.2Ghz.

Do you guys think this is possible with unlocked CPU?

I know the 3570k is slightly better clock for clock, also it can handle more heat(?) but in return gets a bit hotter (?).

My guess is even 1.12v is propably fine, maybe I need push pull on my cooler then.

WOW 1.05v OMG if I set that my temps will be -5 c

If you want more speed increase the mobo voltage and increase vcore voltage. Try OCing. What cooler are you using ?

But with increased voltage means more heat,. Your gonna need 1.4 to 1.48 v if you want a 5Ghz OC which I dont recommend since your on stock cooler. Turn off speedstep

Gurus give this guy a proper voltage and numbers to OC. gl

 

[starbucksphreaq]

I have a 2550K running at 4.8Ghz on 1.52Vcore. The mobo is Asus P8Z77-V Deluxe.

It's been running that way for months. Idles at 31c to 35c under "desktop" work. Runs at 73c to 77c under aida64, Intel cpuid, WEI, etc. and that's with a wimpy Intel all-in-one water cooler.

Am I going kill my CPU even though it runs cool and stable?!?

TIA

 

[tweakboy]

NICE! OC starbucksphreaq ,, Does that 2500k have HT I totally forgot.

 

[Yuriman]

I have put in BIOS undervolting, the voltage is fixed in BIOS so it never goes up/down atleast not alot.

Also my CPU is locked, I want buy a unlocked CPU

What CPU do you have?

I personally recommend re-enabling C-states (if you disabled them) and using offset voltage rather than fixed, as your chip is probably idle 98% of the time and you're sending more voltage through it at idle than it needs.

As far as what's possible with unlocked CPUs, most Ivy Bridge CPUs are good for at least 4.4ghz (though there are some duds) and Sandy Bridge I gather is typically good for more, though I don't own a Sandy myself.

Consensus is that even though Ivy is faster per clock, Sandy can typically overclock enough more to compensate for this. IE, an Ivy chip might top out at 4.4ghz and a Sandy chip at 4.7, the SB would be slightly faster. The downside to Sandy is that they draw more power and make more heat (under load), and have weaker integrated graphics.

Neither is a wrong choice.

 

[tweakboy]

I have a 2550K running at 4.8Ghz on 1.52Vcore. The mobo is Asus P8Z77-V Deluxe.

It's been running that way for months. Idles at 31c to 35c under "desktop" work. Runs at 73c to 77c under aida64, Intel cpuid, WEI, etc. and that's with a wimpy Intel all-in-one water cooler.

Am I going kill my CPU even though it runs cool and stable?!?

TIA

WOW 1.52v ouch thats a lot. What are you idle and load temps ? If your load is 60's c and 70's c that is where you want it.

 

[exar333]

I have a 2550K running at 4.8Ghz on 1.52Vcore. The mobo is Asus P8Z77-V Deluxe.

It's been running that way for months. Idles at 31c to 35c under "desktop" work. Runs at 73c to 77c under aida64, Intel cpuid, WEI, etc. and that's with a wimpy Intel all-in-one water cooler.

Am I going kill my CPU even though it runs cool and stable?!?

TIA

That much voltage will definitely decrease your SB's lifetime quite a bit, but too what degree is very hard to tell. Maybe from 20 years to 15 years, 10 years, 5 years, or 3 years, or 1 year. You may see the chip start to run unstable over time, or it may just work great for a long time. It is a lot of voltage for a SB though, not insane, but most folks like to keep voltage at around the 1.45v or less.

 

[piasabird]

I think quiet and overclock dont go together.

 

[exar333]

I think quiet and overclock dont go together.

A conservative OC + good cooling certainly can be quiet. Get a 4.0-4.2ghz OC and use a nice 120mm cooling setup. Almost silent with a good cooler.

 

[Kenmitch]

I have a 2550K running at 4.8Ghz on 1.52Vcore. The mobo is Asus P8Z77-V Deluxe.

It's been running that way for months. Idles at 31c to 35c under "desktop" work. Runs at 73c to 77c under aida64, Intel cpuid, WEI, etc. and that's with a wimpy Intel all-in-one water cooler.

Am I going kill my CPU even though it runs cool and stable?!?

TIA

Purchase the optional insurance plan incase it fails before 3yrs.

Does seem like alot of vcore for only 4.8ghz to me. Think mine takes around 1.38v's or so if I remember correctly. Currently running at whimpy 4.5ghz 1.31v's as I don't need the speed anyways.

On another note I've ran my 2550k at 5.6gz at 1.7v's for a just to see how high she would go....No ill effects so far!

 

[Zxian]

I've got my i7-3770K at 4.2GHz with a Megahalems cooler and a single Scythe Gentle Typhoon fan spinning at 800RPM. The noise level difference between my system being on and off is pretty much nil. When I say quiet, I mean quiet. Ask me about my work at SilentPCReview.com if you're interested some more.

 

[starbucksphreaq]

Hmmmmm. Not sure what to make of the answers but I appreciate the efforts. I guess what I am hearing is that it ISN'T enough to keep CPU running cool and way back from TJmax. You must stay below some elusive Vcore level that will hurt the mobo independent of the CPU. How does that work?

Guess I will have to scratch my head on that one awhile.

You Anandtechers are a brainy bunch which is a pleasant change.

TWEAKBOY: 2550k doesn't HT. Don't think I am missing much....I don't game, etc.

 

[Yuriman]

I can't cite my sources but I've read that Intel made statements about 1.5v being the maximum safe voltage to put through an Ivy Bridge chip. Without context, most people interpret that as 1.5v being the absolute highest short-term safe voltage and chips expected to live a long time should have significantly less voltage put through them.

Heat and volts are what kill chips, in combination with each other. CPUs don't die instantly light lightbulbs, but there's a gradual process called electromigration which causes them to degrade over time. In effect, you may find that your 5ghz Sandy Bridge chip will not be stable at 5ghz in 12 months and will need to be dropped 100mhz or have the voltage increased. In 2 years you may find that you can't even get 4.5ghz out of it because the chip has degraded so significantly.

It's thought that with voltages <1.3v or so, Ivy Bridge chips will almost certainly outlive their usefulness.

 

[tweakboy]

Hmmmmm. Not sure what to make of the answers but I appreciate the efforts. I guess what I am hearing is that it ISN'T enough to keep CPU running cool and way back from TJmax. You must stay below some elusive Vcore level that will hurt the mobo independent of the CPU. How does that work?

Guess I will have to scratch my head on that one awhile.

You Anandtechers are a brainy bunch which is a pleasant change.

TWEAKBOY: 2550k doesn't HT. Don't think I am missing much....I don't game, etc.

Games DO NOT use HT. No game. Apps support 64bit HT , photoshop, studiomax, maya, audio production...autocad.

 

[Kenmitch]

Hmmmmm. Not sure what to make of the answers but I appreciate the efforts. I guess what I am hearing is that it ISN'T enough to keep CPU running cool and way back from TJmax. You must stay below some elusive Vcore level that will hurt the mobo independent of the CPU. How does that work?

The more power the CPU takes the more strain on the motherboards circuits. They are only designed to carry so many watts so it's possible to damage the motherboard.

Keeping the CPU cooler will help with longevity to a certain point.

The vcore deathzone vs years of use threshold is not determined yet....We'll know in a couple of years I guess.

Welcome to the forum

 

[grandpatzer]

4.2GHz (4.5GHz) is readily doable with the 3570K (2500K) without an insane amount of voltage or temps.

He accounted for that, and his figures are pretty much on point from what I've seen and experienced.

What CPU do you have?

I personally recommend re-enabling C-states (if you disabled them) and using offset voltage rather than fixed, as your chip is probably idle 98% of the time and you're sending more voltage through it at idle than it needs.

As far as what's possible with unlocked CPUs, most Ivy Bridge CPUs are good for at least 4.4ghz (though there are some duds) and Sandy Bridge I gather is typically good for more, though I don't own a Sandy myself.

Consensus is that even though Ivy is faster per clock, Sandy can typically overclock enough more to compensate for this. IE, an Ivy chip might top out at 4.4ghz and a Sandy chip at 4.7, the SB would be slightly faster. The downside to Sandy is that they draw more power and make more heat (under load), and have weaker integrated graphics.

Neither is a wrong choice.

I have a Intel i5 2310, it's 2.9ghz but I have a Z68 mobo and I have overclocked all 4 cores to 3.4ghz.
I can't put on the C-Stated because my mobo has annoying coil whine and mobo has no warranty.

*"Consensus is that even though Ivy is faster per clock, Sandy can typically overclock enough more to compensate for this"*

So in this case I could just buy the slightly cheaper 2500k then?

My cooling is Mugen 2 Rev B, I have one 120mm 500rpm fan but I'm willing to have 2fans for push pull but no more then 500rpm(thats my noise limit).

I'm confident my cooling in push pull 500rpm is enough for 1.2v vcore, should I invest in the 2500k then or the 3570k?

 

[Dice144]

Games DO NOT use HT. No game. Apps support 64bit HT , photoshop, studiomax, maya, audio production...autocad.

Bad Company 2 used it and been told BF3 also uses HT.

 

[Yuriman]

*"Consensus is that even though Ivy is faster per clock, Sandy can typically overclock enough more to compensate for this"*

So in this case I could just buy the slightly cheaper 2500k then?

My cooling is Mugen 2 Rev B, I have one 120mm 500rpm fan but I'm willing to have 2fans for push pull but no more then 500rpm(thats my noise limit).

I'm confident my cooling in push pull 500rpm is enough for 1.2v vcore, should I invest in the 2500k then or the 3570k?

You could indeed go for the cheaper 2500K and expect to get the same or better performance. The downside to this is that the 2500K will use more power under load, and as others have mentioned above, you might be limited in your overclock by how much your motherboard can handle safely (or your power supply).

Some scenarios:

2500K @ 4.4ghz vs 3570K @ 4.4ghz

In this case, the IB CPU will draw less power (let's say 90w vs 110w) and perform slightly better, 0-5% depending on the app or game. Downside? It's a more expensive CPU.

2500K @ 4.7ghz vs 3570K @ 4.4ghz

The 2500K is now the better performer. However, it's probably drawing more like 150w instead of 110w. Advantages include better performance from a cheaper CPU. Downside is you need to have a motherboard and power supply that will be ok with the increased power draw. It will also dump more heat into your room (only really an issue if you're loading your CPU a lot). These probably won't be real issues as both CPUs are relatively efficient - it's not like you're drawing 300-600w like an overclocked AMD Bulldozer chip - but it's worth mentioning.



For what it's worth, I've taken my Ivy up to 4.8ghz under watercooling without delidding it (at a safe voltage too), but your mileage may vary. There have been several posts by users who are having difficulty getting even 4.4 stable. Several users have reported taking a 2500K up to 5.5ghz without extreme cooling, though to me the voltage looks unreasonably high for continuous use.

 

[domerocket]

Sandy Bridge is still my fave. The IB's I've done seem to run a little hotter. Although they do use a little less power.