Post your Highest OC'

[steven33]

What is the best CPU cooler to overclock 2500K to over 5.0GHz because I'm planning to buy a new pc?

[Chrispy_]

You're never guaranteed 5GHz, you might get lucky, you might get one that barely hits 4.5GHz.

These are the top 5 coolers for intel, ie - lowest temperatures (but not necessarily quiet)
List is updated at Frostytech very regularly.

Corsair Hydro H100 (two fans)
Spire Thermax Eclipse II (two fans)
Corsair Hydro H80
Coolermaster TPC-812
Noctua NH-C14 (two fans)

[Airmantharp]

If you're using Sandy, heat won't really be an issue with any high-end cooler, if your CPU can actually hit 5.0GHz. My 2500k can get to Windows at 5.0, but is stable at 4.8. I'm using an H60 that's lesser to everything in Chrispy_'s list.

From what I've read about Corsair's line, the H80 when set to 'low' is the quietest high-performing integrated water-cooler out right now; it's quieter than the H60 as measured by Anandtech. I'll bet that the Noctua is the quietest high-performance tower cooler.

[Jason181]

I've had both an H60 and (currently) an H100. The H100 is way, way quieter, but I have no experience with the H80. The downsides to the H100: cost, have to make sure you have a case that will accommodate it, for maximum performance you need two extra fans (although I didn't do this, and my 2600k @ 4.5 Ghz is at 60C at full load). Having said that, I also have a Noctua NH-D14 and the differences in temps from that to the water cooling is not a much as you'd expect, and it's pretty quiet mostly. I'd say that the water cooling is a more pleasant sound at full tilt, however.

[OsakaJ]

I just upgraded my old core 2 duo E6700 system to an i5 3750K on an ASUS P8Z77-V LK mobo cooled with a Hyper 212 EVO. The E6700 overclocked stably at 3.2GHz without a voltage tweak. Overclocking the 3750K takes a bit of finangling. With the stock cooler it would hit 100 C after only a couple of minutes at 4.3GHz. Sizzle sizzle, no good, and that was with stock voltage. With the 212 EVO (fan speed set to Turbo in BIOS and with duo fans), Internal Pll Overvoltage ENABLED, BCLK at 103MHz, CPU Current Capability 120%, CPU PLL at 0.1v, and CPU Spread Spectrum DISABLED, I've gotten the 3750K to a stable 4.43GHz with maximum temp at 68 C.
Curiously, the ASUS mobo is more stable with the BCLK at 102 or 103MHz than at 100 or 101MHz.

[Orthello]

Been running 5.35 Ghz on a 2700k @ 1.51v chilled liquid cooling (-25c) , fully stable . Can boot / game at 5.45 but not IBT stable at that. Will attempt to boot at 5.5 / 5.6 but locks on the windows loadup screen. Max cpu temp under IBT max is 36c.

Also running two 7970 lightnings @ 1400 / 1850 . 1.4v vcore.

This is a 24/7 setup too so its my primary gaming rig

[travbrad]

I was able to get my 2500K to 5ghz even with a $25 CM Hyper 212. The temps were a bit high because of the voltages though. For an everyday overclock I settled on 4.6ghz, which runs about 20C cooler than at 5ghz. With a GTX460 I don't think it's the CPU bottle-necking my PC anyway.

[Prestige Worldwide]

After years of trying and failing miserably, I was finally able to get a decent OC out of my i5 750.

My XMP has given it a slight overlock from 2.67 to 3.04 GHz, which isn't much.

But Sunday I was able to get it to 3.8 GHz (200 x 19) after remaining determined after a few failures aiming for 3.6. Not sure if placebo, but it feels noticeably faster in Windows and BFBC2 seems a bit smoother. I'm pretty much at stock voltage and didn't even have to lower my RAM clocks as they're still at 1600 MHz and their recommended CL9 timings.

She be stable after 2 hours of BFBC2 and 30 mins of Prime 95 torture before I got bored and wanted to play more games. I'm on a custom water loop, so temps didn't go above 56 during prime 95 and are considerably lower during full "gaming" load.

I think I'll be able to easily hit 4 GHz by bumping the multiplier from 19 to 20.

I know 3.8 isn't really anything to write home about, but I'm happy to finally succeed where I've failed many times before .

http://valid.canardpc.com/2679558

[bthylafh]

Got a dead-easy OC to 4.3 GHz using the Asus AI tools included with my motherboard.

[lckbrend]

I've got my Intel Pentium dual core E6600 from 3.0ghz to 3.71ghz with no voltage increase.

[tsoulier]

Wow , it's been a while 4.6 -4.8 with rig below.