GA-G31M-S2C PCI-E frequency

[frankee234]

Hello to the members of Tweaktown!

I find it odd that with this motherboard, G31-S2C, raising the FSB requires me to raise the PCI-E frequency as well to POST. I have a E7200 processor + a 9600GT, and right now, I am running at 377Mhz FSB at 110Mhz PCI-E (and have no intent to go higher than 110). I can go above this, for example, 400Mhz FSB if I take the PCI-E to 118MHz, which is very overboard. Is there a way I can make this work with the frequency strapped to 100Mhz?

PS. This doesn't happen when I used my old 2.8Ghz 800FSB Prescott (taken to 3.8GHz). The problem just started with overclocking my current processor.

Thanks!

[Lsdmeasap]

Re: GA-G31M-S2C PCI-E frequency

I would not even be using 110 if you have SATA Drives it may damage them. 108 is my safe limit, personally, but I have seen users who use 112 as a max.

Sounds like from your comment about one cpu works with it at 100 but the other does not that you may have some incorrect settings or not enough volts maybe?

I do know that is a budget board so asking alot of it is not going to take you to very far, but 400 FSB I would imagine should be obtainable.

What BIOS are you using, and what settings are you trying that fail to load with 100-102 set? >>>

Please do also link your ram and tell me how much of it you have installed

This is Just a template I use to ask people their settings, pay no attention to the numbers in it, replace with yours

Robust Graphics Booster___________ [Auto]
CPU Clock Ratio ____________ [8] 
Fine Clock Ratio ____________[0.5]
CPU Host Clock Control_ [Enabled]
CPU Host Frequency (MHz)__________ [450] 
PCI Express Frequency (Mhz)_______ [100]
C.I.A. 2__________________________ [Disabled]
System Memory Multiplier (SPD)____ [2.00]
DRAM Timing Selectable_______ SPD __ [Manual]

Performance Enhance = [Standard]

CAS Latency Time________________ ?
Dram RAS# to CAS# Delay_________ ?
Dram RAS# Precharge Delay_______?
Precharge Delay (tRAS)__________ ?

ACT to ACT Delay (tRRD)_________ ?
Rank Write to READ Delay________ ?
Write to Precharge Delay_________ ?
Refresh to ACT Delay______________ ?
Read to Precharge Delay__________ ?
Static tRead Value_______________
Static tRead Phase Adjust________ [Auto]


System Voltage Control____ [Manual]
DDR2 OverVoltage Control__ [+0.300V] 
PCI-E OverVoltage Control_ [+0.1V] 
FSB OverVoltage Control___ [+0.1V] 
(G)MCH OverVoltage Control [+0.1V] 
CPU Voltage Control_______ [1.25]

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___________________[Disabled] *Note* Must be enabled to flash from USB

[frankee234]

Re: GA-G31M-S2C PCI-E frequency

Cheers LSD!

Regarding my new CPU, my overclock is stability tested using OCCT for four hours maximum, if it was unstable, it would have stopped much earlier.

I'm using the latest BIOS according to the Taiwan site, F4. It seems PCI-E frequency is very dependent on FSB. Above a certain FSB, the system won't POST. Thus, my overclocking methodology was raise FSB till it doesn't post due to PCI-E, raise the PCI-E by 1, and then repeat the process till I reach 110Mhz. I have 4Gb RAM at standard timings according to SPD, so nothing fancy about it. (5-5-5-15)

Robust Graphics Booster___________ [Auto]
CPU Clock Ratio ____________ [8] not available 
Fine Clock Ratio ____________[0.5] not available 
CPU Host Clock Control_ [Enabled]
CPU Host Frequency (MHz)__________ [377] 
PCI Express Frequency (Mhz)_______ [110]
C.I.A. 2__________________________ [Disabled]
System Memory Multiplier (SPD)____ [2.00] (800 running at 754)
DRAM Timing Selectable_______ SPD __ [Auto]

Performance Enhance = [Standard]

System Voltage Control____ [Manual]
DDR2 OverVoltage Control__ [+0.0V] 
PCI-E OverVoltage Control_ [+0.0V] not available
FSB OverVoltage Control___ [+0.1V] 
(G)MCH OverVoltage Control [+0.0V] not available
CPU Voltage Control_______ [1.291] --> this should be the increment below 1.3V

Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Enabled]
C2/C2E State Support....................: [Disabled] not available
x C4/C4E State Support..................: [Disabled] not available
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___________________[Disabled] *Note* Must be enabled to flash from USB

Well it looks like I've already made most of this board, eh?

[Lsdmeasap]

Re: GA-G31M-S2C PCI-E frequency

Ya, looks like you have reached the boards limit, likely since you cannot adjust MCH Voltage.

You did not add any of your ram timings so I could not comment if any of those are too tight causing you issues or not