Hardware Upgrade Forum - View Single Post - [Thread Ufficiale] CPU serie FX: AMD Bulldozer/Piledriver

Pat77 · 14-10-2011, 13:44

http://www.rage3d.com/reviews/cpu/am.../index.php?p=7

Questo è ancora più interessante.

"Switching to the BIOS, we disabled Turbo and headed for a 22.5 multiplier to see if a 4.5GHz clock would be doable. From AMD Overdrive we saw that the idle voltage was 0.8v, at 3.6GHz it is 1.275v, and at Turbo it is 1.4125v (for both all core turbo 3.9GHz and max turbo 4.2Ghz). Taking that as our guide, we set the vCore to 1.4125 and started Prime95 stability testing. This is where we noticed something interesting, the clock speed would flicker from 3.3Ghz to 4.5Ghz, when a consistent load was applied at all cores. Thinking this was an artifact of Cool'n'Quiet, we disabled CnQ and retested - same behavior. Only after disabling CnQ and C1E as well as C6, would we get a solid stable clock frequency."

14-10-2011, 13:44	#87
Pat77 Senior Member Iscritto dal: Nov 1999 Città: Ceranova (PV) Messaggi: 10382	http://www.rage3d.com/reviews/cpu/am.../index.php?p=7 Questo è ancora più interessante. "Switching to the BIOS, we disabled Turbo and headed for a 22.5 multiplier to see if a 4.5GHz clock would be doable. From AMD Overdrive we saw that the idle voltage was 0.8v, at 3.6GHz it is 1.275v, and at Turbo it is 1.4125v (for both all core turbo 3.9GHz and max turbo 4.2Ghz). Taking that as our guide, we set the vCore to 1.4125 and started Prime95 stability testing. This is where we noticed something interesting, the clock speed would flicker from 3.3Ghz to 4.5Ghz, when a consistent load was applied at all cores. Thinking this was an artifact of Cool'n'Quiet, we disabled CnQ and retested - same behavior. Only after disabling CnQ and C1E as well as C6, would we get a solid stable clock frequency." __________________ Sometimes it is the people no one can imagine anything of who do the things no one can imagine. (Alan Turing) Pkappa Pc: R7 2700x, 16 Gb G.skill TridentZ RGB 2993 mhz 14-14-14-34, Rx Vega 64 8 Gb HBM2, Nzxt 340 elite, Asus MG279Q. Lord Fx: FX 8350, 16 Gb ram Hyperx 1866 10-11-10-30, Rx 580 8 Gb Nitro+ Sapphire, Corsair 400r, Samsung C24FG73. Ultima modifica di Pat77 : 14-10-2011 alle 13:50.