need help with overclocking CVF(990FX)+1866hmz+1090T

[j09]

hey guys i need help with overclocking

I have Crosshair V formula(990FX) mobo bios 0903
with Corsair Vengeance black (CMZ8GX3M2A1866C9) (4x4gb) 16GB 1866hmz
and AMD phenom X6 1090T BE overclock to 4+Ghz

I am trying to get the voltage right compering with other Tutorials on the web but i cant get it stable with prime
with standard settings it works very stable 6-8hours with prime non error or what so ever

please help

[Fallen-Angel]

Welcome to the ROG forums ^^

First of all, watch this video, it may help a lot! After, it may also help to read some threads about BIOS versions and overclocking issues. In one thread about the new 0903 BIOS we found out that the 0705 may be better for overclocking the Phenom II CPUs. Nevertheless sty with 0903 by now. Than go like it says in this video. Btw. what cooling system did you installed?

P.S.: You can't really compare the voltages, because it doesn't matter how similar the rigs are, the oc will always be different.

[j09]

Welcome to the ROG forums ^^

First of all, watch this video, it may help a lot! After, it may also help to read some threads about BIOS versions and overclocking issues. In one thread about the new 0903 BIOS we found out that the 0705 may be better for overclocking the Phenom II CPUs. Nevertheless sty with 0903 by now. Than go like it says in this video. Btw. what cooling system did you installed?

P.S.: You can't really compare the voltages, because it doesn't matter how similar the rigs are, the oc will always be different.

oke i try that and i am using right now Corsair H60 next month or so gonna get custom water cooling with Koolance CPU-370 WB and Watercool MO-RA3 9x120 PRO Black radiator.

[FiNAS]

j09,

can you post screenshots of the voltages you are using, the cpu parameters, the memory timmings and the digi+ settings ?

maybe I can give you a help with that.

[j09]

j09,

can you post screenshots of the voltages you are using, the cpu parameters, the memory timmings and the digi+ settings ?

maybe I can give you a help with that.

hi yea sure i have running now every thing on stock clock and voltage, because its not stable, can you give me a hint what i can try?

my goal right now is 4ghz with 1866 and later with beter cooling 4.2+ or so

[FiNAS]

you should do this in steps:

- first find out if your system is stable at stock. run prime95 for a few hours.
- then find out the min voltage your system needs to be stable at a defined CPU core clock.
- you can then start increasing CPU core clock until you find out it's not stable anymore.
- then you can go on increasing NB speed, HT speed, and finaly memory speed.

considering that your system is stable at stock, try this:

- on the Digi+ menu:
- cpu load line calibration: extreme
- cpu/nb load line calibration: extreme
- cpu over current protection: disabled
- nb over current protection: 130%
- cpu pwm phase control: extreme
- vrm over temp protection: disabled
- cpu voltage frequency: manual
- vrm fixed frequency mode: 550
- cpu pwm mode: extreme

on the extreme tweaker menu:
- ai overclock tuner: manual
- cpu level up: cancel
- cpu ratio: 20
- amd turbo core tech: disable
- cpu bus frequency: 200
- pcie frequency: auto
- memory frequency: place whatever you are using at stock
- cpu/nb frequency: 2000 ( for now )
- HT link speed: 2000 ( for now ; ) )
- extreme OV: disabled
- cpu & nb voltage mode: manual
- cpu manual voltage: 1.52v
- nb manual voltage: 1.5v
- vdda votage: auto
- dram voltage: use whatever is at stock for now.
- vddr, vrefq, vrefca, vrefca on cpu: auto
- dram voltage switching freequncy: 2x
- dram over current protection: disabled
- nb voltage: 1.3
- nb ht voltage: 1.3
- nb 1.8v, vdd pcie, sb voltage: auto
- nv voltage switching freq: 2x
- nb 1.8v switching freq: 2x
- vdd pcie switching freq: 2x

leave you memory timmings at default.

don't worry about temperatures. if the cpu is running to hot it will throttle down or shut itself off prior to any damage.
it you can run your system stable with these settings, start lowering the cpu vcore until it is unstable. select the lowest vcore at wich your system was stable, put nb at 3000mhz and test for stability again, increasing nb voltage if it is unstable or decreasing if it is stable.

HT speed is not important, and memory speed on amd is also meaningless, so if can spare yourself the headache that it is to play with memory on the crosshair V.

good luck!

[j09]

you should do this in steps:

- first find out if your system is stable at stock. run prime95 for a few hours.
- then find out the min voltage your system needs to be stable at a defined CPU core clock.
- you can then start increasing CPU core clock until you find out it's not stable anymore.
- then you can go on increasing NB speed, HT speed, and finaly memory speed.

considering that your system is stable at stock, try this:

- on the Digi+ menu:
- cpu load line calibration: extreme
- cpu/nb load line calibration: extreme
- cpu over current protection: disabled
- nb over current protection: 130%
- cpu pwm phase control: extreme
- vrm over temp protection: disabled
- cpu voltage frequency: manual
- vrm fixed frequency mode: 550
- cpu pwm mode: extreme

on the extreme tweaker menu:
- ai overclock tuner: manual
- cpu level up: cancel
- cpu ratio: 20
- amd turbo core tech: disable
- cpu bus frequency: 200
- pcie frequency: auto
- memory frequency: place whatever you are using at stock
- cpu/nb frequency: 2000 ( for now )
- HT link speed: 2000 ( for now ; ) )
- extreme OV: disabled
- cpu & nb voltage mode: manual
- cpu manual voltage: 1.52v
- nb manual voltage: 1.5v
- vdda votage: auto
- dram voltage: use whatever is at stock for now.
- vddr, vrefq, vrefca, vrefca on cpu: auto
- dram voltage switching freequncy: 2x
- dram over current protection: disabled
- nb voltage: 1.3
- nb ht voltage: 1.3
- nb 1.8v, vdd pcie, sb voltage: auto
- nv voltage switching freq: 2x
- nb 1.8v switching freq: 2x
- vdd pcie switching freq: 2x

leave you memory timmings at default.

don't worry about temperatures. if the cpu is running to hot it will throttle down or shut itself off prior to any damage.
it you can run your system stable with these settings, start lowering the cpu vcore until it is unstable. select the lowest vcore at wich your system was stable, put nb at 3000mhz and test for stability again, increasing nb voltage if it is unstable or decreasing if it is stable.

HT speed is not important, and memory speed on amd is also meaningless, so if can spare yourself the headache that it is to play with memory on the crosshair V.

good luck!

thanx for the tips the vcore looks very high but ill try your tip hope that it would work
and about the 1866hmz memory (FSB:234) 3xNB speed right? i send later the sceenshots of my bios stuff
that will be next step

thanx

[FiNAS]

don't worry about the vcore. I've run my 1100T at 1.57v for weeks without problems. As I told you, if the cpu temp is to high, the cpu with throtle ( you can see this happening with a program named coretemp ). In a worst case scenario, the system will shut off prior to any damage.

also, don't forget to flash bios 1003.

didn't get what you meant by "about the 1866hmz memory (FSB:234) 3xNB speed right?" . run the memory with the settings that you have at the default bios settings, if those are stable. you can tweak nb speed and memory speed later, after finding out your maximum stable cpu_core_clock/vcore pair.

[j09]

don't worry about the vcore. I've run my 1100T at 1.57v for weeks without problems. As I told you, if the cpu temp is to high, the cpu with throtle ( you can see this happening with a program named coretemp ). In a worst case scenario, the system will shut off prior to any damage.

also, don't forget to flash bios 1003.

didn't get what you meant by "about the 1866hmz memory (FSB:234) 3xNB speed right?" . run the memory with the settings that you have at the default bios settings, if those are stable. you can tweak nb speed and memory speed later, after finding out your maximum stable cpu_core_clock/vcore pair.

ow really i just like 3days ago updated my mobo to 0903 and was no 1003 haha funny
and whats you cooling also NB or only CPU? and what your temps? I am using right now Corsair H60 push and pull later on custom when i get the money.

thanx

[FiNAS]

there are two "NB" on an amd platform. the CPU-NB and the NB.
- the CPU-NB is the memory controler that exists on the CPU. it's default speed is 2000mhz and increasing it brings massive performance advantages, in some usage scenarios, even more than increasing the CPU core clock. 3000mhz is attainable by most 1090 or 1100T CPU's.

the NB chip is the one that interfaces with the PCIe bus and has no overclocking options.

I'm running a custom water cooler on the cpu ( search the forum for my posts, I posted my setup on a prior thread ). the VRM around the cpu's are cooled using the stock heatsinks that came with the motherboard, and they do get extremly hot ( nothing to worry about ).

on prime95, at 4300core(1.537v ) 3300nb(1.525v), 3300ht(1.3v) I am around 70c. My cpu is special. search for prior posts from me and you will know why.

and forget about mem clock for now. you can think about it after pushing your core and cpu-nb to the max.