[profJim]

Sometimes, a new mobo will have "issues" that include rebooting, instability, or boot loops.
The following is primarily for EP4x motherboards but might help other Gigabyte models.

The following settings should be set after you have loaded Optimized settings:

PCI Express Frequency (Mhz) --------------- : [Auto] <--- set to 100

Performance Enhance ------------------- : [Turbo] <--- set to Standard when overclocking
Extreme Memory Profile --- (X.M.P.) --- : [Disabled] <--- Leave this Disabled

Motherboard Voltage Control
CPU
CPU Vcore --------------- 1.????? ------ : [Auto] <--- set to the 1.????? value displayed in your bios
CPU Termination ---------- 1.200V* ----- : [Auto] <--- set to the value to the left (Auto over-volts this too much when overclocking) Auto is OK if not overclocking
CPU PLL ------------------ 1.500V* ----- : [Auto] <--- set to the value to the left (Auto over-volts this too much when overclocking) Auto is OK if not overclocking

MCH/ICH
MCH Core ---------------- 1.100V ------- : [Auto] <--- set to 1.20 for 2x2GB ram (1.24 - 1.26, or 1.05 might be needed)

ICH I/O ------------------ 1.500V ------- : [Auto] <--- set to the value displayed in your bios
ICH Core ----------------- 1.100V ------- : [Auto] <--- set to the value displayed in your bios

DRAM
DRAM Voltage ------------ 1.800V ------- : [Auto] <--- set to the max rated ram voltage (for most memory)

Advanced Settings -------- The following settings will improve system stability for overclocked systems.
Limit CPUID Max. to 3 -------------------- : [Disabled]
No-Execute Memory Protect -------------- : [Enabled]
CPU Enhanced Halt (C1E) ----------------- : [Disabled]
C2/C2E State Support -------------------- : [Disabled]
x C4/C4E State Support ------------------ : [Disabled]
CPU Thermal Monitor 2 (TM2) ------------- : [Enabled]
CPU EIST Function ----------------------- : [Disabled]
Virtualization Technology ----------------- : [Disabled] <--- Enabled if you use Vmware/Virtual PC

Integrated Peripherals
Legacy USB Storage Detect --------------- : [Enabled] <--- set to Disabled when overclocking (this must be enabled to flash or boot from a USB drive)

These settings will eliminate many mobo problems unless there are hardware and/or cable connection problems.

===============

If you want specific bios suggestions, we need the following:

1) List your system components in your signature.
--> User CP tab (upper left corner of web page)
--> select Edit Signature
--> enter your hardware components (brand, model, etc.)
--> include your bios version
--> preview
--> Save when complete
Be sure to include your bios version, motherboard version, power supply, cpu heatsink/fan setup and the model numbers of all components.

2) Link to your ram's full specifications.

3) Fill in the generic bios template with your bios settings.
--> Fill in Auto where appropriate.
--> Update "??" values with what is displayed in your bios.
For EP4x motherboards, using either of these EP43/45 bios templates.

4) Include a screenshot that displays:
Memset using the SPD and ">>" tabs
cpu-z CPU and Mainboard screens (several instances can be run at the same time)
EasyTune6 --> TUNER tab --> ADVANCE tab --> VOLTAGE tab (only the Voltage tab is needed)
CoreTemp screen [for your cpu's VID (Voltage ID)]

Links for these programs are in the Latest Overclocking Programs, System Info, Benchmarking, & Stability Tools thread.

Motherboard: Model:  Rev#:  Bios Version:
Cpu: Model
Ram: Brand, Model/Part#, Link to your ram's specs
Power Supply Unit: Brand, Model#, Wattage

Default settings for new setups that are not overclocked.

note: replace all ?? with the value displayed in your bios.
----> Replace "Auto" with manually set values.

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster -------------- : [Auto] <--- FAST is OK
CPU Clock Ratio ---------------------- : [##]
Fine CPU Clock Ratio ----------------- : [0.0] < ignore if not available
CPU Frequency ---------------------: ####

Clock Chip Control
Standard Clock Control
CPU Host Clock Control --------------- : [Enabled]
CPU Host Frequency (Mhz) --------------: [Mhz]
PCI Express Frequency (Mhz) ---------- : [Auto] <--- Set to 100, never leave this on Auto

C.I.A.2 ------------------------------ : [Disabled]

Advanced Clock Control ------- [Press Enter]
CPU Clock Drive ---------------------- : <<< 800
PCI Express Clock Drive -------------- : <<< 900
CPU Clock Skew (ps) ------------------ : <<<
MCH Clock Skew (ps) ------------------ : <<<

DRAM Performance Control
Performance Enhance ------------------- : [Turbo] <--- set to DISABLED when overclocking
Extreme Memory Profile --- (X.M.P.) --- : [Disabled] <--- Leave this Disabled
(G)MCH Frequency Latch ---------------- : [Auto]
System Memory Multiplier -------------- : [Auto]
Memory Frequency (Mhz) ---------------- : [Auto]
DRAM Timing Selectable ---------------- : [Auto] <-- set to MANUAL for overclocking

Standard Timing Control
CAS Latency Time -------- ?? ---------- : [Auto]
tRCD  ------------------- ?? ---------- : [Auto]
tRP --------------------- ?? ---------- : [Auto]
tRAS  ------------------- ?? ---------- : [Auto]

Advanced Timing Control
tRRD  ------------------- ?? ---------- : [Auto]
tWTR  ------------------- ?? ---------- : [Auto]
tWR --------------------- ?? ---------- : [Auto]
tRFC  ------------------- ?? ---------- : [Auto]
tRTP  ------------------- ?? ---------- : [Auto]
Command Rate (CMD) -------------------- : [Auto] <--- Auto or 0 is OK

Driving Strength Profiles
Driving Strength --------- : Press Enter <--- press ENTER to modify memory sub-timings when overclocking

Channel A
Static tRead Value --------------------- : [Auto]
tRD Phase0 Adjustment ------------------ : [Auto] <-- leave this and below set to AUTO
tRD Phase1 Adjustment ------------------ : [Auto]
tRD Phase2 Adjustment ------------------ : [Auto]
tRD Phase3 Adjustment ------------------ : [Auto]
Trd2rd(Different Rank) ----------------- : [Auto]
Twr2wr(Different Rank) ----------------- : [Auto]
Twr2rd(Different Rank) ----------------- : [Auto]
Trd2wr(Same/Diff Rank) ----------------- : [Auto]
Dimm1 Clock Skew Control --------------- : [Auto]  ps
Dimm2 Clock Skew Control --------------- : [Auto]  ps

Channel B
Static tRead Value --------------------- : [Auto]
tRD Phase0 Adjustment ------------------ : [Auto] <-- leave this and below set to AUTO
tRD Phase1 Adjustment ------------------ : [Auto]
tRD Phase2 Adjustment ------------------ : [Auto]
tRD Phase3 Adjustment ------------------ : [Auto]
Trd2rd(Different Rank) ----------------- : [Auto]
Twr2wr(Different Rank) ----------------- : [Auto]
Twr2rd(Different Rank) ----------------- : [Auto]
Trd2wr(Same/Diff Rank) ----------------- : [Auto]
Dimm1 Clock Skew Control --------------- : [Auto]  ps
Dimm2 Clock Skew Control --------------- : [Auto]  ps

Motherboard Voltage Control
CPU
Voltage Types------------ Normal -------- Current -----
Load-Line Calibration ----------------- : [Disabled]
CPU Vcore --------------- 1.?????  ---- : [Auto] <--- set to the 1.????? value

CPU Termination --------- 1.200V* ----- : [Auto] <--- set to the value to the left (Auto over-volts this too much when overclocking) Auto is OK if not overclocking
CPU PLL ----------------- 1.500V* ----- : [Auto] <--- set to the value to the left (Auto over-volts this too much when overclocking) Auto is OK if not overclocking

CPU Reference ----------- 0.755V* ----- : [Auto] <--- Auto Will set this correctly
CPU Reference2 ---------- 0.800V* ----- : [Auto] <--- Auto Will set this correctly

MCH/ICH
MCH Core ---------------- 1.100V ------- : [Auto] <--- set to 1.20 for 2x2GB ram (1.24 - 1.26, or 1.05 might be needed)
MCH Reference ----------- 0.800V ------- : [Auto]
MCH/DRAM Ref ------------ 0.900V  ------ : [Auto]
ICH I/O ----------------- 1.500V ------- : [Auto] <--- set to the value to the left
ICH Core ---------------- 1.100V ------- : [Auto] <--- set to the value to the left
DRAM
DRAM Voltage ------------ 1.800V ------- : [Auto] <--- set to the max rated ram voltage (for most memory)
DRAM Termination -------- 0.900V ------- : [Auto]
Channel A Reference ----- 0.900V ------- : [Auto]
Channel B Reference ----- 0.900V ------- : [Auto]

Advanced Settings
Limit CPUID Max. to 3 ------------------ : [Disabled]
No-Execute Memory Protect -------------- : [Enabled]
CPU Enhanced Halt (C1E) ---------------- : [Disabled]
C2/C2E State Support ------------------- : [Disabled]
x C4/C4E State Support ----------------- : [Disabled]
CPU Thermal Monitor 2 (TM2) ------------ : [Enabled]
CPU EIST Function  --------------------- : [Disabled]
Virtualization Technology -------------- : [Disabled] <--- Enabled if you use Vmware/Virtual PC

Integrated Peripherals
Legacy USB Storage Detect  ------------- : [Enabled] <--- set to Disabled when overclocking (this must be enabled to flash or boot from a USB drive)