AMD A8-3870K Cracks 6 GHz with All Cores Enabled

Thursday, February 2nd 2012

Overclocker "Christian Ney" of the HWBOT community claims to have cracked the 6 GHz clock speed mark with an AMD A8-3870K APU, with all four of its cores enabled. The feat consisted of a clock speed of 6067.7 MHz achieved using a base clock of 258.2 MHz and multiplier of 47.0x. The memory was clocked at 3505 MHz, just 95 MHz short of a world-record. The chip was put through a scorching core voltage of 2V. Supporting components included GIGABYTE A75-UD4H motherboard, and GeIL EVO Corsa DDR3 memory. The setup was cooled sub-zero. CPU-Z Validator rejected this submission, probably because like us, it finds 2V vCore and 258.2 MHz base clock unreal for Llano, since it uses a common 100 MHz clock domain for BClk and PCIe.

Source: MyDrivers.com

posted by btarunr - 5:52 AM | Related News |

User comments

by Volkszorn88 (5:54 AM) - Reply

Awesome Processing Unit.

by Drugsh (6:00 AM) - Reply

i wonder how much is the gpu clock?

by TheLostSwede (6:27 AM) - Reply

by: Drugsh
i wonder how much is the gpu clock?

If you look at the second picture you'll see that they're using a discrete card...

by timmyisme22 (7:32 AM) - Reply

by: TheLostSwede
If you look at the second picture you'll see that they're using a discrete card...

It's an APU so it's still a fair question (even with the discrete). Anyone know if they disabled it to attain this clock? I'd prefer to see a high CPU/GPU clock and test it out with the sub-zero cooling. Would be much more awesome to see the result.

by NC37 (7:32 AM) - Reply

Heh, I built a rig for a relative with that board.

by btarunr (8:24 AM) - Reply

by: timmyisme22
It's an APU so it's still a fair question (even with the discrete). Anyone know if they disabled it to attain this clock?

For APU's embedded GPU and a discrete GPU to work in tandem, the display will be plugged to the motherboard, not the discrete graphics card (as pictured). So the embedded GPU is likely not enabled.

by R_1 (9:14 AM) - Reply

DIMM cooling looks insane! :rockout: I wish somebody produced superconductor based PCB and embedded superconductive vias in silicon wafers.

by _JP_ (9:53 AM) - Reply

:eek: Damn! That's impressive. I also didn't know those GeIL EVO Corsa RAMs could clock that high. :wtf: Those DIMMs were cheap here a while ago. Real cheap. Enhance version though, but still cheap.

by nonkX3 (10:20 AM) - Reply

oh how i love the asus background behind it :p

by leonard83 (10:47 AM) - Reply

Gigabyte A75-UD4H`s still the best in A75MBs

by Thefumigator (11:21 AM) - Reply

pretty evil oc.

by badtaylorx (11:52 AM) - Reply

really......a llano who knew??? :rockout:

by ERazer (1:15 PM) - Reply

damn thats awsome

by MikeMurphy (1:21 PM) - Reply

2v is a lot of juice!

by ironwolf (1:48 PM) - Reply

Finally, all cores enabled. That's what kind of good stuff I was hoping we would see, none of this one or two core action crap.

by cadaveca (3:09 PM) - Reply

by: timmyisme22
It's an APU so it's still a fair question (even with the discrete). Anyone know if they disabled it to attain this clock? I'd prefer to see a high CPU/GPU clock and test it out with the sub-zero cooling. Would be much more awesome to see the result.

Yes, enabling the IGP portion of the APUs does seem to affect memory/core clocking.

by happita (5:29 PM) - Reply

This is pointless. Not even us enthusiasts use LN2, dry ice, or whatever other extreme to cool our parts. That's saved for people looking to break records. 99.9% of us use air/watercooling...and some MAYBE phase-change.

by Static~Charge (5:39 PM) - Reply

by: happita
This is pointless. Not even us enthusiasts use LN2, dry ice, or whatever other extreme to cool our parts. That's saved for people looking to break records. 99.9% of us use air/watercooling...and some MAYBE phase-change.

It wasn't intended to be a practical application, just a demonstration of maximum clock speed (like comparing a Corvette and a nitromethane dragster).

by Static~Charge (5:41 PM) - Reply

by: _JP_
I also didn't know those GeIL EVO Corsa RAMs could clock that high. :wtf:

Apparently they can, with a sufficient application of liquid nitrogen. :)

by fullinfusion (5:54 PM) - Reply

2 volts :laugh: Unreal! :shadedshu

by Thefumigator (5:54 PM) - Reply

by: Static~Charge
Apparently they can, with a sufficient application of liquid nitrogen. :)

also dependent on how stable could the integrated memory controller be at that speed.

by Rowsol (8:35 PM) - Reply

2v holy shit!!!

by faramir (8:37 PM) - Reply

by: ironwolf
Finally, all cores enabled. That's what kind of good stuff I was hoping we would see, none of this one or two core action crap.

My sentiment as well. Those crappy FX "records" mean very little - this is an actual record. It also shows that Athlon II architecture wasn't nearly as bad frequency-wise, there was hardly any need to go for extra-long pipeline in new architecture.

by eidairaman1 (3:14 AM) - Reply

by: happita
This is pointless. Not even us enthusiasts use LN2, dry ice, or whatever other extreme to cool our parts. That's saved for people looking to break records. 99.9% of us use air/watercooling...and some MAYBE phase-change.

Thumbs down.. This is a record actually considering this is an APU with All cores operating at 6 ghz each.

by: fullinfusion
2 volts :laugh: Unreal! :shadedshu

by: Rowsol
2v holy shit!!!

I Dont see what the problem is when an Athlon XP took 1.8-2.0 VCore just to reach 2.6-3.0GHz AMDs love the voltage.

by AlexTRoopeR (8:28 PM) - Reply

CPU-Z Validator rejected this submission, probably because like us, it finds 2V vCore and 258.2 MHz base clock unreal for Llano

True that. And I'd add that CPU-Z did not read the bus right, since 258.2 * 47 = 12135.4 MHz. It's probably 129.1 MHz for the bus.

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