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

btarunr

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#1
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.

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#2
Awesome Processing Unit.
 

Drugsh

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#3
i wonder how much is the gpu clock?
 
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#4
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...
 
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#5
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.
 
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#6
Heh, I built a rig for a relative with that board.
 

btarunr

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#7
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.
 
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#8
DIMM cooling looks insane! :rockout: I wish somebody produced superconductor based PCB and embedded superconductive vias in silicon wafers.
 
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#9
: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.
 

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#10
oh how i love the asus background behind it :p
 
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#12
pretty evil oc.
 
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#13
really......a llano

who knew??? :rockout:
 
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#14
damn thats awsome
 

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#17
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.
 
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#18
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.
 
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#19
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).
 
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#20
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. :)
 

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#21
2 volts :laugh: Unreal! :shadedshu
 
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#22
Apparently they can, with a sufficient application of liquid nitrogen. :)
also dependent on how stable could the integrated memory controller be at that speed.
 
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#23
2v holy shit!!!
 

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#24
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.
 

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#25
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.

2 volts :laugh: Unreal! :shadedshu
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.
 
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