**Official DFI LanParty UT 790FX-M2R Review/Overclock/Guide Thread**

[justapost]

P-State Current Limit Register

0xc0010061: 0x00000000 0x00000010

[6:4] PStatMaxVal (lowest p-state, highest value) 1
[2:0] CurPstateLimit (lowest temp related p-state, highest value, max from htc and stc p-states) 0

P-State Control Register

0xc0010062: 0x00000000 0x00000000

[2:0] PstateCmd (last written p-state) 0

P-State Status Register

0xc0010063: 0x00000000 0x00000000

[2:0] CurPstate (active p-state) 0

P-State 0

0xc0010064: 0x800001BC 0x3000300A

[63] PstateEn: 1 (register is valid after reset)
[41:40] IddDiv: 1 (10A)
[39:32] IddValue: 94
[31:25] NbVid: 0011000b 1,25V
[22] NbDid: 0 (1)
[15:9] CpuVid: 0011000b 1,25V
[8:6] CpuDid: 0 (1)
[5:0] CpuFid: 10

CPU COF = 2600MHz

P-State 1

0xc0010065: 0x80000187 0x30005047

[63] PstateEn: 1 (register is valid after reset)
[41:40] IddDiv: 1 (10A)
[39:32] IddValue: 135
[31:25] NbVid: 0011000b 1,25V
[22] NbDid: 0 (1)
[15:9] CpuVid: 0101000b 1,05V
[8:6] CpuDid: 1 (2)
[5:0] CpuFid: 7

CPU COF = 1150MHz

P-State 2

0xc0010066: 0x00000000 0x30000000

[63] PstateEn: 0 (register is invalid after reset)

P-State 3

0xc0010067: 0x00000000 0x30000000

[63] PstateEn: 0 (register is invalid after reset)

P-State 4

0xc0010068: 0x00000000 0x30000000

[63] PstateEn: 0 (register is invalid after reset)

COFVID Control Register

0xc0010070: 0x00000000 0x3000300A

[31:25] NbVid: 0011000b 1,25V
[22] NbDid: 0 (1)
[18:16] PstateId: 0
[15:9] CpuVid: 0011000b 1,25V
[8:6] CpuDid: 0 (1)
[5:0] CpuFid: 10

COFVID Status Register

0xc0010071: 0x00800001 0x3000300A

[63:59] MaxNbFid:
[58:56] CurPstateLimit: 0
[54:49] MaxCpuCof: 0 (no frequency limit)
[48:42] MinVid: 0 (no minimum specified)
[41:35] MaxVid: 0 (no maximum specified)
[34:32] StartupPstate: 1
[31:25] CurNbVid: 0011000b 1,25V
[22] CurNbDid: 0 (1)
[18:16] CurPstate: 0
[15:9] CurCpuVid: 0011000b 1,25V
[8:6] CurCpuDid: 0 (1)
[5:0] CurCpuFid: 10

Hardware Thermal Control (HTC) Register

F3x64: 0x127F0004

[30:28] HtcPstateLimit: 1 (p-state limit in htc mode)
[27:24] HtcHystLmt: 2
[23] HtcSlewSel: 0
[22:16] HtcTmpLmt: 127 (115,5 Tctl)
[7] PslApicLoEn: 0 (no interrupt used for low end change)
[6] PslApicHiEn: 0 (no interrupt used for high end change)
[4] HtcAct: 0 (Prozessor not in HTC state)
[0] HtcEn: 0 (Prozessor not capable of entering the HTC-active state)

Software Thermal Control (STC) Register

F3x68: 0x10000000

[30:28] StcPstateLimit: 1 (p-state limit in htc mode)

Power Control Miscellaneous Register

F3xA0: 0xA00A2800

[31] CofVidProg: 1 (VID and PID of the p-state had been applied to the prozessor)
[29] SlamVidMode: 1 (Voltage is slamed not stepped)
[27:16] PStateId: 0
[13:11] PllLockTime: 1010b (PLL need 16 microseconds to apply a new FID on a p-state change)
[8] PviMode: 0 (Serial VID interface selected)
[7] PsiVidEn: 0 (PSI_L is always high)
[6:0] PsiVid: 0 (unused cuz PsiVidEn is zero)

Reported Temperature Control Register

F3xA4: 0x1A1C9880

[31:21] CurTmp: 208 (26 ° * Tctl)
Note: (see BKDG 2.10.1)

Tctl is a non-physical temperature on an arbitrary scale measured in degrees.... It specifies the prozessor temperature relative to the point at which the system must supply the maximum cooling for the prozessor's specified maximum case temperature and maximum thermal power dissipation.

[17:16] CurTmpSel: 0 (CurTmp provides the read-only Tctl value)
[12:8] PerStepTimeDn: 18h (1 millisecond)
[7] TmpSlewDnEn: 1 (Slew the rate controls in the downward direction are enabled)
[6:5] TmpMaxDiffUp: 0 (Upward slewing disabled)
[4:0] PerStepTimeUp: 0 (raniging from 1 to 8 milliseconds)

If vid's are used i guess it's the voltage step mode.