OC'ing advice with my E4300 & Gigabyte GA P35 DS3P....

StevieP

StevieP

StevieP

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Hya guys, started playing around with my new mobo last night to try and get a decent, stable overclock out of it and need some advices on voltages etc as I'm a bit of a novice....
My full setup is in my sig and so far I've done the following:

Ramped up the FSB to 250 (running at 2250MHz with my 9x multiplier) and dropped the RAM multiplier so it was running at 750 - no problems with stability

Then I ramped it up to 300 (so it was running at 2700MHz) and again dropped the RAM multiplier (I think to 2.5) so it was running at 750ish - again no problems with stability.

Then I tried the FSB at 333 to hit 3000MHz and again dropped the RAM multiplier to get the memory running at the correct 800 - computer posted but Vista wouldnt load. So I tried to up the CPU voltage 1 level - still Vista wouldnt load - tried another level up and Vista booted but blue screened immediately and the mobo reverted back to the default settings! (I'm assuming it was some safety feature of the board!)

Can anyone give me some hints as to what I need to do to get a stable overclock at 3000MHz voltage and setting-wise???

Thanks for any help guys....

StevieP
 
When you go into the BIOS, on the main screen press Cntrl + F1. This unlocks memory timings. It might be that the board is setting them too fast for the RAM to handle. Try 5-5-5-15 till you get a stable CPU overclock then slowly bring it down till it's unstable again. Also I'd check how much Voltage your RAM needs and then adjust the RAM voltage to suit.
 
I'm not sure what timings or voltage my memory should run at to be honest! The memory is http://www.ocztechnology.com/products/memory/ocz_ddr2_pc2_6400_platinum_revision_2_dual_channel and it mentions 1.9-2.1 volts??
(sorry, as you can see I'm a novice at this!)
So its not just a case of upping the voltage to get the CPU running at 333FSB??
If I do change the timings on the RAM, will that mean I'm not running it at the full speed?? (seemed quite nice that the 333 setting on the CPU meant that there was an exact multiplier on the RAM settings to get it running at the correct speed of 800!!)

Thanks for your help....

StevieP
 
mp260767 said:
in the bios theres a setting for you're memory/ddr voltage set that to +0.1 see if that helps.
Click to expand...

Should the memory need more voltage since that is running at its correct speed of 800?!? :confused: Surely it would be the CPU voltage as its that that I'm overclocking???

:confused:
 
StevieP said:
Should the memory need more voltage since that is running at its correct speed of 800?!? :confused: Surely it would be the CPU voltage as its that that I'm overclocking???

:confused:
Click to expand...

its not MORE voltage as such the 1.9-2.1 you mentioned is the range of voltage it needs to operate.
 
Yep the RAM voltage isn't programmed onto the RAM itself like timings are. The gigabyte BIOS will just show 'default value' which is 1.8v for DDR2, you need to add an offset manually.
 
JIM_BOB7813 said:
Yep the RAM voltage isn't programmed onto the RAM itself like timings are. The gigabyte BIOS will just show 'default value' which is 1.8v for DDR2, you need to add an offset manually.
Click to expand...

So, irrespective of whether im overclocking, I should always set the RAM voltage between the 2 figures indicated for that particular RAM?

StevieP
 
Thanks for the advice about the RAM - do you think that will help with the stability of the system when I'm pushing the CPU to 333 to hit 3Ghz then or will I need to tinker with the FSB and/or CPU voltages too??
My "Motherboard Intelligence Tweaker" page in my BIOS currently looks like this if it helps:

MB Intelligent Tweaker (M.I.T)

Robust Graphics Booster - Auto
CPUClock Ratio - 9X
CPU Host Clock Control - Enabled
CPU Host Frequency (Mhz) - 300
PCI Express Frequency (Mhz) - Auto
C.I.A.2 - Disabled
System Memory Multiplier (SPD) - 2.5
Memory Frequency (Mhz) 800 - 750
High Speed DRAM DLL Settings - Option 1
Performance Enhance - Standard
DRAM Timing Selectable (SPD) - Auto
- CAS Latency Time - 5 (Auto)
- DRAM RAS# to CAS# delay - 5 (Auto)
- DRAM RAS# precharge - 5 (Auto)
- Precharge Delay (tRAS) - 15 (Auto)
- Act To Act Delay (tRRD) - 4 (Auto)
- Rank Write To READ Delay - 3 (Auto)
- Write To Precharge Delay - 6 (Auto)
- Refrest To ACT Delay - 42 (0)
- Read To Precharge Delay - 3 (Auto)
- tRD - 5 (Auto)
- tRD Pahse Adjustment - 1 (Auto)
***** System Voltage NOT Optimised ***** (Flashing)
System Voltage Control - Manual
DDR2 Overvoltage Control - Normal
PCI-E Overvoltage Control - Normal
FSB Overvoltage Control - Normal
G(MCH) Overvoltage Control - Normal
CPU Overvoltage Control - 1.32500V
Normal VPU Vcore - 1.32500V (Greyed out)

Any advice on these???

Thanks again.....

StevieP
 
I would set PCI Express Frequency (Mhz) to 101mhz, and DDR2 Overvoltage Control to +0.3v.
 
Cob said:
I would set PCI Express Frequency (Mhz) to 101mhz, and DDR2 Overvoltage Control to +0.3v.
Click to expand...

I understand that the PCI-E frequency should be 100Mhz (or there abouts) but why set the DDR2 to +0.3v?? If the default value is 1.8 and the ram needs between 1.9 and 2.1, what is the benefit of pushing it up to 2.1v with the +0.3v setting if I'm not overclocking the memory?? (the guy above said I should only really pump it up more if I was pushing my ram!?!?)

Thanks... learning all the time!!! :p

StevieP
 
So if I ramp up the RAM voltage, should I need to tinker with the FSB or CPU voltages too to hit 3Ghz+ stable??

StevieP
 
You'll probably have to raise the CPU voltage a bit to get 3ghz. But you shouldn't have to touch the FSB voltages. But it wouldn't do any harm to raise the MCH and FSB voltages by 0.1v til you have got 3ghz stable.
 
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