ga-ep45t-usb3p...FSB failboat?

HiProfile · Jun 11, 2010

For a reason I can't pin down, I can't get this to be stable above 400mhz. Even at that, it sometimes won't want to POST. When it does, it's fine for at least 15mins in LinX (64bit, Win7). I've tried up to 475mhz to see if there was a range it didn't like, but it just seems overall limited.

Specs:
PCP&P 750watt
q6600
ga-ep45t-usb3p mobo
2x2gb G.Skill ddr3 2000mhz ram (got it cheap)
msi 5770 "hawk"
Win7 64bit

I'll admit I've not tried much overclocking since I got this q6600 a week after G0 steppings started showing up (luckly mine was a G0). I kept putting off modding my old water setup for the quad since it was so much faster stock than a 2.5ghz barton. I got a Coolermaster 212 Hyper Plus recently (not looking for records), so I figured I'd try some overdue overclocking. FYI I also lapped the CPU and cooler base, followed the most effective TIM app method with AS5, and have more than enough airflow.

I've tried the ddr3 at the loosest SPD settings and as low as 1000mhz. Same for the cpu, I've tried it at a 6x multi to start. I've also cranked voltages pretty high now, after many tests slowly increasing from stock.

Voltages I've tried so far:
vcore: 1.375v
MCH: 1.40v
VTT: 1.38v
PLL: 1.68v

I know other cpu's and ddr2 versions of this chipset can crank up pretty high. I've researched what people recommend for the upper limits for the listed voltages, so that's why I've stopped there. I don't have much experience with those settings though.

The only thing I can think of, assuming it's not my mobo/cpu/memory - this board will *not* disable C1E or EIST. The settings will change & save, but all software I've tried show voltage & multi changing. However, since I've turned the voltages up a decent amount and tried a 6x multi, it doesn't seem that is the issue.

ATM I'm running lower voltages, [email protected], and 1512mhz/cas9 for the ddr3. It passes 20 mins of LinX error free. Temps in CoreTemp max at 80C for cores 0&1, 77C for cores 2&3. If I try >390fsb (up to max voltages above, any multi & ddr3 setting), it barely even posts. Am I missing something or did Gigabyte drop the ball on DDR3 support? Help! :rain:

redduc900 · Jun 12, 2010

Without knowing the VID of your particular chip, try these settings for 3.2GHz (the clock speed and lower DRAM frequency at this point aren't important, but instead focus on the FSB of 400MHz and higher). Change the Vcore to whatever voltage is needed in your case for a 3.2GHz clock, and the DRAM timings / voltage for your RAM ( I used settings of 1.35 Vcore and timings of 9-9-9-24-2N at 1.65 Vdimm in the template)...

Code:

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ................[Auto]
CPU Clock Ratio ........................[ 8 X]
CPU Frequency ..........................3.20GHz( 400x8)

********** Clock Chip Control **********
>>>>> Standard Clock Control
CPU Host Clock Control..................[Enabled]
CPU Host Frequency (Mhz) ...............[ 400]
PCI Express Frequency (Mhz) ............[100]
C.I.A.2 ......................................[Disabled]
>>>>> Advanced Clock Control
> Advanced Clock Control [Press Enter]
CPU Clock Drive...........................[ 800mV]
PCI Express Clock Drive.................[ 900mV]
CPU Clock Skew (ps).....................[ 150ps]
MCH Clock Skew (ps)....................[ 250ps]

******** DRAM Performance Control ********
Performance Enhance......................[Standard]
Extreme Memory Profile (X.M.P.).........[Disabled]
(G)MCH Frequency Latch..................[Auto]
System Memory Multiplier .................[3.33D]
Memory Frequency (Mhz) ................. 1333
DRAM Timing Selectable .................[Manual]

>>>>> Standard Timing Control
CAS Latency Time........................[9]
tRCD ........................................[9]
tRP ..........................................[9]
tRAS.........................................[24]

>>>>> Advanced Timing Control
> Advanced Timing Control
tRRD........................................[AUTO]
tWTR......................................[AUTO]
tWR........................................[AUTO]
tRFC.......................................[AUTO]
tRTP.......................................[AUTO]
Command Rate (CMD) ................[2N / 2T]

Channel A Timing Settings
Static tRead Value.........................[AUTO]
tRD Phase0 Adjustment...................[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]

Channel B Timing Settings
Static tRead Value.........................[AUTO]
tRD Phase0 Adjustment...................[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]

**** Mother Board Voltage Control ****
Voltage Types Normal Current
>>> CPU
CPU Vcore.....................1.325V.......[1.35000V]

CPU Termination.............1.200V..........[1.300V]

CPU PLL........................1.500V..........[1.500V]

>>> MCH/ICH
MCH Core......................1.100V..........[1.400V]
MCH Reference...............0.760V..........[Auto]
ICH I/O.........................1.500V..........[1.500V]

>>> DRAM
DRAM Voltage................1.500V..........[1.65V]
DRAM Termination...........0.900V..........[Auto]
Ch-A Data VRef………........0.750V..........[Auto]
Ch-B Data VRef………........0.750V..........[Auto]
Ch-A Address Vref…………..0.750V………….[Auto]
Ch-B Address Vref…………..0.750V………….[Auto]

Advanced Settings
CPU Multi-Threading..........................[Enabled]
Limit CPUID Max. to 3........................[Disabled]
No-Execute Memory Protect...............[Enabled]
CPU Enhanced Halt (C1E)..................[Disabled]
CPU Thermal Monitor 2(TM2) .............[Disabled]
CPU EIST Function...........................[Disabled]
Virtualization Technology..................[Enabled]

If you have a low voltage VID then try bumping the multiplier to 9 for 3.6GHz, but raise the Vcore to 1.500V. Temporarily continue to use the D strap w/ the 3.33 multiplier for a DRAM frequency of 1333MHz. If Memtest86+ passes at 1333MHz using the 3.33 multiplier, change the multiplier to 4.00 using the B strap for an effective 1600MHz DRAM frequency w/ the FSB still at 400MHz.

wingman99 · Jun 13, 2010

Do you have the newest bios, also if you can't disable C1E or EIST, there is something wrong with the board, I would contact Gigabyte and tell them those functions are not working.

GIGABYTE Technical Service Zone LINK:http://www.gigabyte-usa.com/Support/ServiceCenter.aspx

HiProfile · Jun 13, 2010

Thanks, I'll give those settings a try when I get back from work. I had a windows-based memtest on my PC so I gave that a shot at 1514mhz, and it passed but I know that's not the ideal way to check.

wingman99 said:
Do you have the newest bios, also if you can't disable C1E or EIST, there is something wrong with the board, I would contact Gigabyte and tell them those functions are not working.

GIGABYTE Technical Service Zone LINK:http://www.gigabyte-usa.com/Support/ServiceCenter.aspx

AFAIK I have the latest bios. v1.0 is what I have and all I've found elsewhere. I'll definately be calling them regardless. I'd be nice to disable it for testing this stuff.

ga-ep45t-usb3p...FSB failboat?

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