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Problem overclocking EP45-Extrem


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Hi everybody,

 

Since this is my first post here, I'm going to introduce myself a bit.

I'm french - so please excuse my english president -, I'm overclocking my computer for 2 years now. I was the proud owner of a Maximus Formula and an E8500 clocked at 4.3Ghz under watercooling.

 

Unfortunatly, my maximus died, so, after I had read a lot of reviews - one is on this website -, I decided to buy a Gigabyte EP45-Extreme on the following basis: High FSB stability (at least 500, I need 470), easy to O/C, complete, good voltages stability.

 

I'm currently a bit disapointed: I just can't add ONE Mhz on my FSB.

I first tried to fix each voltages cause I don't like having them at AUTO. Then, I just changed FSB from 333 to 334 starting from defaults settings.

 

The fact is, rebooting the computer after changing values, it crashes, and BIOS is re-loaded using defaults settings (for frequencies and voltages only, not for the other options as splash screen or boot drive order...)

 

I just can't belive my motherboard can't take 1 single Mhz over 333Mhz.

I assume there some kind of parameter I should change, or whatever.

 

I hope you'll be able to help me going through this matter.

 

Thanks !

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Hi,

 

Here is my template

 

MB Intelligent Tweaker(M.I.T.)

Robust Graphics Booster ...............: Fast

CPU Clock Ratio ..........................: 9

Fine CPU Clock Ratio.....................:.0.5

CPU Frequency ...........................: 3.16

 

 

Clock Chip Control

Standard Clock Control

CPU Host Clock Control..................: [Enabled]

CPU Host Frequency (Mhz) ............: 333Mhz

PCI Express Frequency (Mhz) .........: 100

 

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

 

 

Advanced Clock Control [Press Enter]

CPU Clock Drive...........................: <<< 800

PCI Express Clock Drive.................: <<< 900

CPU Clock Skew (ps)....................: <<< 0

MCH Clock Skew (ps)...................: <<< 0

 

 

DRAM Performance Control

Performance Enhance...................: [STANDARD]

Extreme Memory Profile (X.M.P.).....: Disabled

(G)MCH Frequency Latch...............: [Auto]

System Memory Multiplier ..............: 3.20B

Memory Frequency (Mhz) ..............: 1066

DRAM Timing Selectable ................: [Manual]

 

Standard Timing Control

CAS Latency Time........................5

tRCD .........................................5

tRP'...........................................5

tRAS..........................................15

 

Advanced Timing Control

tRRD........................................... Auto (4)

tWTR.......................................... Auto (4)

tWR............................................ Auto (8)

tRFC........................................... Auto (56)

tRTP........................................... Auto (4)

Command Rate (CMD) ....................: Auto (0)

 

Driving Strength Profiles

Driving Strength ............................

 

Channel A

Static tRead Value.........................:8

tRD Phase0 Adjustment...................:Auto (0)

tRD Phase1 Adjustment...................:Auto (0)

tRD Phase2 Adjustment .................:Auto (0)

tRD Phase3 Adjustment..................:Auto (0)

Trd2rd(Different Rank)....................:Auto (8)

Twr2wr(Different Rank)...................:Auto (8)

Twr2rd(Different Rank)...................:Auto (7)

Trd2wr(Same/Diff Rank)..................:Auto (9)

Dimm1 Clock Skew Control...............:Auto ps

Dimm2 Clock Skew Control...............:Auto ps

 

Channel B

 

Idem channel A

 

Motherboard Voltage Control

 

CPU

CPU Vcore

Edited by Zangdaarr

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I have had experience with some MB and CPU's that do not like odd numbers for some reason. One Motherboard and CPU combination will accept about a 10% or 20% over clock but will not under any circumstance take a 15%. (or anything in between) While I have experience with a lot of systems and builds, I may not have the experience that some of the others have with overclocking. My current system is fairly forgiving and will let me do almost anything I desire. (Have an ASUS MB) Did you try an even number multiple with your OC? I am not certain that helps but I will accept criticism from the others on this system if they believe me to be incorrect. Thanks

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Since I'm not able to modify my RAM ratio (either via BIOS or ET6), my computer was memory unstable (1200+ is too high since I don't want to increase DRAM Voltage too much).

 

Do you think this is a normal situation or should I return the motherboard?

 

Thanks you for your help

 

List your other hardware specs.

 

Here is where you adjust the RAM ratio;

 

(G)MCH Frequency Latch...............: [Auto]

System Memory Multiplier ..............: 3.20B

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