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**Lsdmeasap** · 11-24-2008, 10:09 AM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

I would try F4 or F5a, since your CPU is not supported with F3a it may or may not work, and if it does it may not work properly.

That thread was likely made before much F4 and F5a testing was done, and I bet those users are now on the newer BIOS's anyway.

Your issues are likely just due to incorrect settings, I can for sure help you

That is only the Max Warrantied Voltage and is likely not needed at all until you go past 1066, Anything over 2.1V I suggest always to have a fan on the ram. I see that ram will run 1066 at 2.0V so you should be fine.

Give me your settings you are using that fail and where you want to go and I will advise back >>>>

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

Code:

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]

CPU/PCIEX Clock Driving Control [800mV]
CPU Clock Skew Control [normal]
GMCH Clock Skew Control [Normal]

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

**Pum** · 11-24-2008, 04:04 PM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

Hi Lsdmeasap, I sure hope you can help. Here's the settings I used successfully to get a massive 1% OC

Code:

  Robust Graphics Booster      Auto 
  CPU Multi                    9 
  CPU Host MHz                 337 
  BIOS reported CPU GHz        3.03 
  PCI Express Frequency (Mhz)  100 
  Perf Enhance                 Std 
  Mem multi                    2 
  Mem MHz                      674 
  Mem Timing                   Man 
  CAS Latency                  6 
  DRAM RAS# to CAS# Delay      6 
  DRAM RAS# Precharge Delay    6 
  Precharge delay (tRAS)       18 
  ACT to ACT Delay(tRRD)       6 
  Write to READ Delay          8 
  Write to Pre-charge Delay    10 
  Refresh to ACT Delay         44 
  Read to Precharge Delay      7 
  Static tRead Value           15 
  Static tRead Phase Adjust    Aut 
  System Voltage Control       Man 
  DDR2 OverVolts               0.2 
  FSB OverVolts                0.1 
  FSB DeOverVolts              Norm 
  (G)MCH OverVolts             0.1 
  CPU GTLREF Volts             0.636 
  CPU Volts                    1.25000 
  Limit CPUID Max to 3         Dis 
  No-Execute Memory Protect    Ena 
  CPU Enhanced Halt (C1E)      Dis 
  CPU Thermal Monitor 2(TM2)   Ena 
  CPU EIST Function            Dis 
  Virtualization Technology    Dis 
  Legacy USB Storage Detect    Dis

I then changed only the CPU Host MHz to just 340, and it double resets back to defaults

The mem timings are very loose to try to maximise chances of success.

**Lsdmeasap** · 11-25-2008, 04:16 AM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

Try this for 3.6, not sure what you want to reach so I thought that may be acceptable.

Robust Graphics Booster Auto
CPU Multi 9
CPU Host MHz 402
BIOS reported CPU GHz 3.618
PCI Express Frequency (Mhz) 100
Perf Enhance Std
Mem multi 2.40
Mem MHz 900
Mem Timing Man
CAS Latency 5
DRAM RAS# to CAS# Delay 5
DRAM RAS# Precharge Delay 5
Precharge delay (tRAS) 15
ACT to ACT Delay(tRRD) 6 << may be to high try 4-5 for now
Write to READ Delay 8
Write to Pre-charge Delay 10
Refresh to ACT Delay 44
Read to Precharge Delay 7
Static tRead Value 15 << may be too high causing issues, use 10-12
Static tRead Phase Adjust Aut
System Voltage Control Man
DDR2 OverVolts 0.2 << +.4 =2.2
FSB OverVolts 0.1
FSB DeOverVolts Norm
(G)MCH OverVolts 0.1
CPU GTLREF Volts 0.636 << Auto
CPU Volts 1.25000 << 1.25-1.35 or more, this could have been your issue with the above, what does this give you for actual in windows? it is normally less then what you set in the BIOS, you can check with CPU-z

**Pum** · 11-25-2008, 04:43 AM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

Cheers, I'll give those settings a try when I'm back home from work later.
Is there a particular reason why you recommend "CPU Host MHz 402" rather than 400 or any other nearby value? Are certain multiples of something better, or something like that?

BTW, my goal is 4GHz stable, or whatever I can get, for occasional video rendering or other compute intensive apps (like alife simulation).

**Lsdmeasap** · 11-25-2008, 12:42 PM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

Yes, 400 is right on the 333/400 strap line and using it may cause issues. Just best to use 399 or 401 or so

4ghz eh, should be easy with your CPU as long as you have good cooling

**Pum** · 11-26-2008, 04:12 AM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

Didn't have much time yesterday evening, but got a chance to try your suggested settings. Failed with same problem - double reset back to defaults

The BIOS appears to start trying to POST, but fails almost immediately. My guess is that it is checking the new settings and sees something it doesn't like, but is being way too fussy about what it will accept

Specific settings I tried:

Robust Graphics Booster_____Auto
CPU Multi_____9
CPU Host MHz_____402
BIOS reported CPU GHz_____3.62
PCI Express Frequency (Mhz)_____100
Perf Enhance_____Std
Mem multi_____2.4
BIOS reported Mem MHz_____964.8
Mem Timing_____Man
CAS Latency_____5
DRAM RAS# to CAS# Delay_____5
DRAM RAS# Precharge Delay_____5
Precharge delay (tRAS)_____15
ACT to ACT Delay(tRRD)_____4
Write to READ Delay_____8
Write to Pre-charge Delay_____10
Refresh to ACT Delay_____44
Read to Precharge Delay_____7
Static tRead Value_____11
Static tRead Phase Adjust_____Aut
System Voltage Control_____Man
DDR2 OverVolts_____0.4
FSB OverVolts_____0.1
FSB DeOverVolts_____Norm
(G)MCH OverVolts_____0.1
CPU GTLREF Volts_____0.636
CPU Volts_____1.30000
Limit CPUID Max to 3_____Dis
No-Execute Memory Protect_____Ena
CPU Enhanced Halt (C1E)_____Dis
CPU Thermal Monitor 2(TM2) _____Ena
CPU EIST Function_____Dis
Virtualization Technology_____Dis
Legacy USB Storage Detect_____Dis

Any ideas?

**Lsdmeasap** · 11-26-2008, 06:35 AM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

Try more CPU Volts, that may not be enough at all with vdrop

A double reboot is normal, triple is not. Also set your ram to 555-18 for not to further rule that out and put your ref voltage in Auto for now as well and maybe add more to FSB voltage

**Pum** · 11-26-2008, 08:40 AM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

I'll hopefully get more time to test this evening.

Re double/triple reboot:
I set OC values in BIOS, exit and save.
It turns off for about 2 secs and back on.
Tries to POST for about 1 sec.
Turns off for about 2 secs and back on with default (non-OC) settings.

**Pum** · 11-26-2008, 05:36 PM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

Now here's a thing. I've tried beseeching the lord BIOS with quite a few different combinations of mystic numerals, and got nowhere. So, I tried the much derided EasyTune software that came on the CD with the mobo. Wonders of wonders, it went up to 4.1GHz with no trouble at all (CPU 456x9 = 4104MHz, Mem 456x2.4 = 1094MHz). I basically wanted to see if it made any difference, and if so then explore the limitations of the system. Well I didn't have time to reach the limitations yet, but at least it proves that the hardware is capable of the speeds I'm aiming for. Here's some screenshots when I was running at 4GHz:

I must admit that running EasyTune felt dirty somehow, and it wasn't "proper" OCing

, but if it's stupid and it works then it ain't stupid! Anyway, it's the best I've got for now.

I didn't get time to try the OC from the BIOS with more vcore (was 1.3v), but note that the EasyTune OC was running at less volts (it ran at 1.3v too, but I tried dropping it in EasyTune.) Also, notice in CPU-Z that the memory seems to be running happily at 5-5-5-15.

Note also that PCIE freq and volts do not appear in EasyTune - I guess the APIs that EasyTune uses for these features are missing in the chipset. In the BIOS I cannot change PCIE volts either, although PCIE freq is available.

More testing when I get some more time.

**jfk&g** · 11-26-2008, 07:22 PM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

That's impressive. You might want to use MemSet to reveal what the "live" memory sub-timing values are while it's running overclocked within Windows. Then you can save those values in BIOS for a place to begin tweaking from. You can read about MemSet in this Lsdmeasap sticky ... Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

**Pum** · 11-27-2008, 04:47 AM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

Yeah, I was quite pleased it easily went over 4.1GHz with no immediate trouble. I'm quite happy to run at 4GHz just when I need the extra processing power, and slower the rest of the time.

I got MemSet, along with a whole bunch of other utils last night, and had a quick look - I'll look at that some more, as you suggest. It really looks to me like the BIOS is just way too fussy about what settings it will accept. I'm fairly happy with using EasyTune, but it's a PIA to adjust the values any significant distance, as you have to click them 1MHz at a time, unless I'm missing something; I don't want to load the OC settings on every boot, just when I need them.

I may try upgrading my F4 BIOS. How are you finding F5a BIOS? OK? Stable? New features? Easier to OC? Cheers, Pum.

**jfk&g** · 11-27-2008, 05:19 AM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

I didn't really notice any differences between F4 and F5a, but I'm not using a CPU (yet) that may benefit from the upgrade. They are both stable for me. PLEASE - do NOT use @BIOS to flash the BIOS. I saw that it was mentioned in the forum link in your initial post. I bricked my board using it, as have several other users. Lsdmeasap has a sticky about using QFlash

, which is a very nice utility, and is easy to access from the BIOS screen. It calls for the extracted BIOS file, stored on either a floppy diskette or USB.

4gHz thru EasyTune may not be as rock solid as seems. Try stressing it with Intel Burn Test and see how far it gets. I didn't use ET very much when I frst installed this board. Maybe I should revisit it.

Use F11:SAVE and F12:LOAD at the front BIOS page to manage different BIOS profiles. It works well.

**Lsdmeasap** · 11-27-2008, 06:18 AM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

Your board will not show anything in Easytune that is not in the BIOS, and may leave out things as well such as PCIE Freq. No big deal as at least PCIE Freq does not need changed, should always be set to 100 in the BIOS.

As said above your ET overclock is likely not too stable, but it does show you can for sure do it on the board.

If you keep having issues please do post me the FULL settings you are trying in the BIOS and I will try to help you get things squared away

**Pum** · 11-27-2008, 06:28 AM

Re: GA-P35-S3G BIOS for E8400 E0 OC?

So did you have to try lots of different settings before the BIOS accepted the OC, or did it accept different OC settings quite easily? For me it refuses to even try to boot with any volt/timing settings I try if I set system FSB to 340MHz or higher. I've tried quite a few different settings for all the volts and mem timings etc, and the BIOS just kicks them out and resets back to defaults. I'm figuring that if my hardware is capable of 4+GHz (which I've proven it is with EasyTune) then I should at least be able to get it to ~3.6GHz without having to get all the settings exactly right. I thought I would be able to start OCing with approximately correct settings, and gradually home in on the necessary optimum settings as I also homed in on the maximum speed, but it feels like I have to get all the timings and voltages just perfect to even get a minimal OC!

I wonder what's changed in F5 BIOS. F4 introduced support for E8*00 E0 core, so maybe that was just basic functional support, but not much good for OCing, and now they're improving on that in F5 - I hope. Yeah, I know not to use @BIOS, thanx. Been flashing BIOS since the early 1990s - still a scary exercise. Yep, I've read Lsdmeasap's piece on QFlash, cheers. The save/load profile feature is real nice, which is one of the reasons I chose a Gigabyte mobo for the first time - always used Asus in the past, as they were pretty much the best for OCing and other features then.

I didn't have enough time to do proper stability testing yesterday. I ran SuperPI 1M after each new setting to gauge performance, and as a mini-stability test. I also ran the LinX version of the Intel Linpack Burn Test successfully for 5 loops, but I can't remember at which clock speed. I'm busy this evening, so I'll do more testing when I can.

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GA-P35-S3G BIOS for E8400 E0 OC?

GA-P35-S3G BIOS for E8400 E0 OC?

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