Carn't get a stable OC

**Aus_Karlos** · 03-17-2008, 04:58 AM

I know a lot about OC'ing, ive read article after article over the past few months.
But i carnt seem to get a stable OC even if i up my FSB by 5mhz, After 5mins of playing Crysis it crashes with a blue screen which i cannot see.
Ive got everest writing a log every 5 sec on my temps the CPU didnt even reach 45c on both cores.
All the voltages where stable and under manual control so they dont change.
Also in the BIOS, when you select "Unlink" to unlink the RAM from the CPU the RAM should stay at 800mhz but it doesn't, As soon as i up the FSB my RAM goes down to 790mhz and the timings shift to 5-6-6-18 (5-5-5-15).
Its driving me crazy.... All i want is a bit of extra performance and it keeps crashing with the slightest touch.
I need some help before i throw my PC out the Window...

dai · 03-17-2008, 10:20 AM

turn off the auto reboot so it freezes on the bsod
have you lifted your ram voltage

**Aus_Karlos** · 03-18-2008, 12:32 AM

RAM is at 2.0v.
But i think my problem could lie in the CPU spread spectrum. Could it be conflicting with my OC.
Also i found out that Event Viewer recorded the BSOD, altho no stop code :sigh it did say it was caused by an unknown driver. (Yay for MS).

**Aus_Karlos** · 03-18-2008, 05:30 AM

Ok, ive managed to stable to OC, ive disabled everything with spectrum in it, put the RAM voltage to 1.9v (5-5-5-15 @ 793mhz)
The FSB was at 333mhz now is at 340mhz (a small step). My processor is running at 2.79ghz (Default 2.66ghz)
Ive also manually set every OC setting there is, most where on Auto, so i was guessing as i increased the FSB the PCI-E bus was also increased becoming unstable. And then this in turn was causing the unknown driver error.
Its been running now for 3hrs without fail.
Im going to try and get my CPU to 2.9ghz.

**Aus_Karlos** · 03-21-2008, 04:41 AM

Ok, so this has been worrying me even before i started OC'ing. Its my RAM and N/B.
After about 1 hour of the system been on (Idle) i carnt touch my RAM or N/B. They are so hot i can cook an egg in seconds on them.
My Motherboard has copper/pipes running all over and sitting on the N/B is a big chunk i would say about 4cmX4cmX8cm. The RAM are in cased in Ali. I dont know the exact temp but is this normal.
I would like to OC my RAM to 900mhz (800mhz) what stresses would this put the RAM and the Motherboard under.

dai · 03-21-2008, 07:59 AM

i think you need to read up on articles on o/c'ing

**linderman** · 03-21-2008, 10:27 AM

please paste a screenshot off all the tabs in cpu-z

http://www.cpuid.com/cpuz.php

what is your ram ratio ??????

you will never get to 900mhz on your ram . nor would you want to!

that would put your ram running far faster with a wider bandwidth than your cpu could ever hope to make use of

hell / with the E8400 and its 1333mhz FSB the DDR2-800 ram doesnt really like anything above 870-890mhz tops!

**Aus_Karlos** · 03-22-2008, 02:02 AM

The pics are at the bottom.
For my RAM the CPU-Z doesnt show any timings 4-4-4-15 and 2.2v EVP (but i only want to go to 2.0v) but my RAM supports it, here

**linderman** · 03-22-2008, 07:21 AM

you need to change your memory divider aka SPD to a value of "2" >>>>. your ram ratio should be 1:1 not 13:15

is your vdimm set at 2.0 volts now ?

what is your cpu voltage set at now ?

**linderman** · 03-22-2008, 07:47 AM

have you checked for bios updates ?????

**Aus_Karlos** · 03-22-2008, 06:57 PM

There is no BIOS update at this time http://www.giga-byte.com/Support/Mot...ProductID=2553
And my Motherboard doesnt have a SPD divider. I can set the FSB/RAM Ratio to 1:1 but that means i need to set my FSB to Auto and when i do that my FSB goes to 430mhz and my RAM goes to 1266mhz. So im not doing that again.
My RAM voltage is at 1.9v which is stable ive had no problems
My CPU is 1.31 Full load and 1.12v on idle. (I can put the Voltage on a set rate if you like , it probably doesnt need to go to 1.31v yet)

**Aus_Karlos** · 03-22-2008, 08:41 PM

Just double checked, there is no option to change my Memory Divider. All i have in the BIOS is the ability to change all the timings and the frequency of the RAM.
I have also dropped my CPU voltage to 1.25v same performance but with a 4c temp drop.
Im using Prime95 to do the torture testing.
RAM is now at 2.0v.

**mattlock** · 03-22-2008, 11:05 PM

Karlos, to set your CPU/Mem ratio to 1:1 use the blue highlighted settings below. They are taken from the users manual for your board.

FSB-Memory Clock Mode
Auto BIOS will automatically setup the FSB-Memory Clock Mode. (Default value)
Linked Set FSB-Memory Clock Mode to Linked.
Unlinked Set FSB-Memory Clock Mode to Unlinked.

FSB-Memory Ratio
This option is available only when FSB-Memory Clock Mode is Linked.

Auto BIOS will automatically setup the FSB-Memory Ratio. (Default value)
1:1 Set FSB-Memory Ratio to 1:1.
5:4 Set FSB-Memory Ratio to 5:4.
3:2 Set FSB-Memory Ratio to 3:2.
Sync Mode Set FSB-Memory Ratio to Sync Mode.

CPU Host Frequency
This option is available only when FSB-Memory Clock Mode is Linked or Unlinked.100 ~ 650 Set CPU Host Frequency from 100 MHz to 650 MHz.

The actual range depends on the CPU you install.
If you use a 533 MHz FSB processor, please set CPU Host Frequency to 133 MHz.
If you use an 800 MHz FSB processor, please set CPU Host Frequency to 200 MHz.
If you use a 1066 MHz FSB processor, please set CPU Host Frequency to 266 MHz.
If you use a 1333 MHz FSB processor, please set CPU Host Frequency to 333 MHz.

Actual CPU Clock (Mhz)
The values depend on CPU Host Frequency setting.

Memory Frequency (Mhz)
This option is available only when FSB-Memory Clock Mode is Unlinked.
400 ~ 1400 Set Memory Frequency from 400 MHz to 1400 MHz

Using Unlinked will allow you to set the FSB for the RAM (Memory Frequency) and the CPU (CPU Host Frequency) seperately but, as Linderman so wisely stated, it is best to run it at 1:1.

**Aus_Karlos** · 03-23-2008, 12:10 AM

Yeah i know but like i said for some reason when i select Auto and linked and change the Ratio to 1:1 my FSB hits 450mhz and my RAM goes to 1266mhz all with a CPU multi of x8

Edit: I know its best to run at 1:1 but i have yet seen any who OC's get a 1:1 ratio when manually OC'ing

**mattlock** · 03-23-2008, 12:26 AM

Quote:

Originally Posted by Aus_Karlos

Yeah i know but like i said for some reason when i select Auto and linked and change the Ratio to 1:1 my FSB hits 450mhz and my RAM goes to 1266mhz all with a CPU multi of x8

Edit: I know its best to run at 1:1 but i have yet seen any who OC's get a 1:1 ratio when manually OC'ing

What are you setting to Auto?

BTW, I'm running an E8400 OCed to 4ghz running @ 1:1 on DDR800. FSB @ 445 RAM @ 890.

03-17-2008, 04:58 AM	#1 (permalink)
Aus_Karlos Mentor, Games Team Join Date: Mar 2007 Location: Western Australia Posts: 1,628 OS: Vista Ultimate x64, Windows XP 32-bit/64-bit My System	Carn't get a stable OC I know a lot about OC'ing, ive read article after article over the past few months. But i carnt seem to get a stable OC even if i up my FSB by 5mhz, After 5mins of playing Crysis it crashes with a blue screen which i cannot see. Ive got everest writing a log every 5 sec on my temps the CPU didnt even reach 45c on both cores. All the voltages where stable and under manual control so they dont change. Also in the BIOS, when you select "Unlink" to unlink the RAM from the CPU the RAM should stay at 800mhz but it doesn't, As soon as i up the FSB my RAM goes down to 790mhz and the timings shift to 5-6-6-18 (5-5-5-15). Its driving me crazy.... All i want is a bit of extra performance and it keeps crashing with the slightest touch. I need some help before i throw my PC out the Window... __________________ MemTest86 / Nvidia Drivers / ATI Drivers / DirectX 9.0c / Sys Requirements / Everest Crysis Tweak

03-17-2008, 10:20 AM	#2 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 39,475 OS: vista 32x ultimate retail	Re: Carn't get a stable OC turn off the auto reboot so it freezes on the bsod have you lifted your ram voltage __________________

03-18-2008, 12:32 AM	#3 (permalink)
Aus_Karlos Mentor, Games Team Join Date: Mar 2007 Location: Western Australia Posts: 1,628 OS: Vista Ultimate x64, Windows XP 32-bit/64-bit My System	Re: Carn't get a stable OC RAM is at 2.0v. But i think my problem could lie in the CPU spread spectrum. Could it be conflicting with my OC. Also i found out that Event Viewer recorded the BSOD, altho no stop code :sigh it did say it was caused by an unknown driver. (Yay for MS). __________________ MemTest86 / Nvidia Drivers / ATI Drivers / DirectX 9.0c / Sys Requirements / Everest Crysis Tweak

03-18-2008, 05:30 AM	#4 (permalink)
Aus_Karlos Mentor, Games Team Join Date: Mar 2007 Location: Western Australia Posts: 1,628 OS: Vista Ultimate x64, Windows XP 32-bit/64-bit My System	Re: Carn't get a stable OC Ok, ive managed to stable to OC, ive disabled everything with spectrum in it, put the RAM voltage to 1.9v (5-5-5-15 @ 793mhz) The FSB was at 333mhz now is at 340mhz (a small step). My processor is running at 2.79ghz (Default 2.66ghz) Ive also manually set every OC setting there is, most where on Auto, so i was guessing as i increased the FSB the PCI-E bus was also increased becoming unstable. And then this in turn was causing the unknown driver error. Its been running now for 3hrs without fail. Im going to try and get my CPU to 2.9ghz. __________________ MemTest86 / Nvidia Drivers / ATI Drivers / DirectX 9.0c / Sys Requirements / Everest Crysis Tweak

03-21-2008, 04:41 AM	#5 (permalink)
Aus_Karlos Mentor, Games Team Join Date: Mar 2007 Location: Western Australia Posts: 1,628 OS: Vista Ultimate x64, Windows XP 32-bit/64-bit My System	Re: Carn't get a stable OC Ok, so this has been worrying me even before i started OC'ing. Its my RAM and N/B. After about 1 hour of the system been on (Idle) i carnt touch my RAM or N/B. They are so hot i can cook an egg in seconds on them. My Motherboard has copper/pipes running all over and sitting on the N/B is a big chunk i would say about 4cmX4cmX8cm. The RAM are in cased in Ali. I dont know the exact temp but is this normal. I would like to OC my RAM to 900mhz (800mhz) what stresses would this put the RAM and the Motherboard under. __________________ MemTest86 / Nvidia Drivers / ATI Drivers / DirectX 9.0c / Sys Requirements / Everest Crysis Tweak

03-21-2008, 07:59 AM	#6 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 39,475 OS: vista 32x ultimate retail	Re: Carn't get a stable OC i think you need to read up on articles on o/c'ing __________________

03-21-2008, 10:27 AM	#7 (permalink)
linderman Moderator, Hardware Team Join Date: May 2005 Posts: 12,906 OS: win 2000 pro / Win XP pro My System	Re: Carn't get a stable OC please paste a screenshot off all the tabs in cpu-z http://www.cpuid.com/cpuz.php what is your ram ratio ?????? you will never get to 900mhz on your ram . nor would you want to! that would put your ram running far faster with a wider bandwidth than your cpu could ever hope to make use of hell / with the E8400 and its 1333mhz FSB the DDR2-800 ram doesnt really like anything above 870-890mhz tops! __________________ Why would YOU try to power a $300.00 video card with a $70.00 power supply ? Do YOU enjoy trouble shooting ?

03-22-2008, 07:21 AM	#9 (permalink)
linderman Moderator, Hardware Team Join Date: May 2005 Posts: 12,906 OS: win 2000 pro / Win XP pro My System	Re: Carn't get a stable OC you need to change your memory divider aka SPD to a value of "2" >>>>. your ram ratio should be 1:1 not 13:15 is your vdimm set at 2.0 volts now ? what is your cpu voltage set at now ? __________________ Why would YOU try to power a $300.00 video card with a $70.00 power supply ? Do YOU enjoy trouble shooting ?

03-22-2008, 07:47 AM	#10 (permalink)
linderman Moderator, Hardware Team Join Date: May 2005 Posts: 12,906 OS: win 2000 pro / Win XP pro My System	Re: Carn't get a stable OC have you checked for bios updates ????? __________________ Why would YOU try to power a $300.00 video card with a $70.00 power supply ? Do YOU enjoy trouble shooting ?

03-22-2008, 06:57 PM	#11 (permalink)
Aus_Karlos Mentor, Games Team Join Date: Mar 2007 Location: Western Australia Posts: 1,628 OS: Vista Ultimate x64, Windows XP 32-bit/64-bit My System	Re: Carn't get a stable OC There is no BIOS update at this time http://www.giga-byte.com/Support/Mot...ProductID=2553 And my Motherboard doesnt have a SPD divider. I can set the FSB/RAM Ratio to 1:1 but that means i need to set my FSB to Auto and when i do that my FSB goes to 430mhz and my RAM goes to 1266mhz. So im not doing that again. My RAM voltage is at 1.9v which is stable ive had no problems My CPU is 1.31 Full load and 1.12v on idle. (I can put the Voltage on a set rate if you like , it probably doesnt need to go to 1.31v yet) __________________ MemTest86 / Nvidia Drivers / ATI Drivers / DirectX 9.0c / Sys Requirements / Everest Crysis Tweak

03-22-2008, 08:41 PM	#12 (permalink)
Aus_Karlos Mentor, Games Team Join Date: Mar 2007 Location: Western Australia Posts: 1,628 OS: Vista Ultimate x64, Windows XP 32-bit/64-bit My System	Re: Carn't get a stable OC Just double checked, there is no option to change my Memory Divider. All i have in the BIOS is the ability to change all the timings and the frequency of the RAM. I have also dropped my CPU voltage to 1.25v same performance but with a 4c temp drop. Im using Prime95 to do the torture testing. RAM is now at 2.0v. __________________ MemTest86 / Nvidia Drivers / ATI Drivers / DirectX 9.0c / Sys Requirements / Everest Crysis Tweak

03-22-2008, 11:05 PM	#13 (permalink)
mattlock moderator hardware team Join Date: Dec 2005 Location: Ohio Posts: 3,755 OS: XP SP2, Ubuntu Gutsy Gibbon My System	Re: Carn't get a stable OC Karlos, to set your CPU/Mem ratio to 1:1 use the blue highlighted settings below. They are taken from the users manual for your board. FSB-Memory Clock Mode Auto BIOS will automatically setup the FSB-Memory Clock Mode. (Default value) Linked Set FSB-Memory Clock Mode to Linked. Unlinked Set FSB-Memory Clock Mode to Unlinked. FSB-Memory Ratio This option is available only when FSB-Memory Clock Mode is Linked. Auto BIOS will automatically setup the FSB-Memory Ratio. (Default value) 1:1 Set FSB-Memory Ratio to 1:1. 5:4 Set FSB-Memory Ratio to 5:4. 3:2 Set FSB-Memory Ratio to 3:2. Sync Mode Set FSB-Memory Ratio to Sync Mode. CPU Host Frequency This option is available only when FSB-Memory Clock Mode is Linked or Unlinked.100 ~ 650 Set CPU Host Frequency from 100 MHz to 650 MHz. The actual range depends on the CPU you install. If you use a 533 MHz FSB processor, please set CPU Host Frequency to 133 MHz. If you use an 800 MHz FSB processor, please set CPU Host Frequency to 200 MHz. If you use a 1066 MHz FSB processor, please set CPU Host Frequency to 266 MHz. If you use a 1333 MHz FSB processor, please set CPU Host Frequency to 333 MHz. Actual CPU Clock (Mhz) The values depend on CPU Host Frequency setting. Memory Frequency (Mhz) This option is available only when FSB-Memory Clock Mode is Unlinked. 400 ~ 1400 Set Memory Frequency from 400 MHz to 1400 MHz Using Unlinked will allow you to set the FSB for the RAM (Memory Frequency) and the CPU (CPU Host Frequency) seperately but, as Linderman so wisely stated, it is best to run it at 1:1. __________________ Matt Everest-Thermal Paste Instruction-Power Supply Info-Sensorview PSU Calculator-Speedfan-Bench Test Help TSF Fight Disease. It's Free!

03-23-2008, 12:10 AM	#14 (permalink)
Aus_Karlos Mentor, Games Team Join Date: Mar 2007 Location: Western Australia Posts: 1,628 OS: Vista Ultimate x64, Windows XP 32-bit/64-bit My System	Re: Carn't get a stable OC Yeah i know but like i said for some reason when i select Auto and linked and change the Ratio to 1:1 my FSB hits 450mhz and my RAM goes to 1266mhz all with a CPU multi of x8 Edit: I know its best to run at 1:1 but i have yet seen any who OC's get a 1:1 ratio when manually OC'ing __________________ MemTest86 / Nvidia Drivers / ATI Drivers / DirectX 9.0c / Sys Requirements / Everest Crysis Tweak Last edited by Aus_Karlos : 03-23-2008 at 12:15 AM.