After spending nearly the whole of today, I can publish a mini guide on overclocking with this mobo. I shall list down the problems I faced and solutions.
OK, after a whole day of testing and rebooting, I finally got 300MHz FSB to work. Both BIOS 1.1 and 1.2J seems to have the same overclocking results.
Testing for Max FSB achieved:
1. Set your AGP to 67MHz, HTT to 3x and multiplier to 4x.
2. Under RAM section, set RAM to 100MHz, use 3-4-10-4 2T
3. Disable the boot logo (optional), save and restart.
4. Slowly push your FSB up, say 10MHz at a time.
5. You may encounter reboot issues, upon reboot comp will have blank screen. If so, recycle the power. It should boot with new settings. I did have this issue till after abt 250MHz. After that, things seems to be ok.
6. Go as high as you can. If you hit 300MHz, load in your OS to make sure comp is stable. !Make sure your AGP is set to 67MHz!
The clockspeed may not be shown correctly after abt 250-260MHz FSB. Don't worry. Just make sure the comp can POST with your FSB setting can liao.
I am facing cold boot issues on this mobo when overclocked. Tried both 1.1 and 1.2J. Same issues. After you power down your comp, it won't POST. Currently, I could not find any way to get around this.
The only way now is to let the comp power down by itself. Don't clear BIOS. Power up again and your FSB will default back to 200MHz. You could either use software like clockgen to set FSB or set thru BIOS. Note that setting FSB thru clockgen gives the same cold boot problem. I recommend you to play with voltage/multiplier/FSB settings thru clockgen rather than BIOS. At least you know you have settings that will definitely work.
This guide to serve to help those who are having problems to achieve 300MHz FSB. It does not take RAM speed into consideration. For high FSB + RAM speed, I strongly recommend you to use those RAMs used by reviewers.
Thats abt all for now.
Mobile A64
For those using or intending to use mobile A64. Stick with BIOS 1.1, 1.2 has boot issues unless multiplier is set to 4x. Set your voltage to the max you want (eg. 1.65V). Ignore what the BIOS shows.
After that, play with your settings using clockgen. Note that Clockgen allows a max setting of 1.55V. However, the setting DOES NOT correspond to actual core voltage. Use tools like CPUZ to monitor actual voltage. If you set to 1.65V in BIOS, the max setting of 1.55V is actually 1.65V.
I tested with Kingston DDR333 512MB using Hynix BT-J chipset, this max out at ~289MHz with RAM set to 133MHz using 3-5-11-5. Using 256MB Corsair DDR400 value aelect chips, I max out slightly higher @ 291MHz. Seems that RAM speed don't really determine the FSB you can hit. With RAM set to 100MHz, both can hit 300MHZ FSB.
OK, after a whole day of testing and rebooting, I finally got 300MHz FSB to work. Both BIOS 1.1 and 1.2J seems to have the same overclocking results.
Testing for Max FSB achieved:
1. Set your AGP to 67MHz, HTT to 3x and multiplier to 4x.
2. Under RAM section, set RAM to 100MHz, use 3-4-10-4 2T
3. Disable the boot logo (optional), save and restart.
4. Slowly push your FSB up, say 10MHz at a time.
5. You may encounter reboot issues, upon reboot comp will have blank screen. If so, recycle the power. It should boot with new settings. I did have this issue till after abt 250MHz. After that, things seems to be ok.
6. Go as high as you can. If you hit 300MHz, load in your OS to make sure comp is stable. !Make sure your AGP is set to 67MHz!
The clockspeed may not be shown correctly after abt 250-260MHz FSB. Don't worry. Just make sure the comp can POST with your FSB setting can liao.
I am facing cold boot issues on this mobo when overclocked. Tried both 1.1 and 1.2J. Same issues. After you power down your comp, it won't POST. Currently, I could not find any way to get around this.
The only way now is to let the comp power down by itself. Don't clear BIOS. Power up again and your FSB will default back to 200MHz. You could either use software like clockgen to set FSB or set thru BIOS. Note that setting FSB thru clockgen gives the same cold boot problem. I recommend you to play with voltage/multiplier/FSB settings thru clockgen rather than BIOS. At least you know you have settings that will definitely work.
This guide to serve to help those who are having problems to achieve 300MHz FSB. It does not take RAM speed into consideration. For high FSB + RAM speed, I strongly recommend you to use those RAMs used by reviewers.
Thats abt all for now.
Mobile A64
For those using or intending to use mobile A64. Stick with BIOS 1.1, 1.2 has boot issues unless multiplier is set to 4x. Set your voltage to the max you want (eg. 1.65V). Ignore what the BIOS shows.
After that, play with your settings using clockgen. Note that Clockgen allows a max setting of 1.55V. However, the setting DOES NOT correspond to actual core voltage. Use tools like CPUZ to monitor actual voltage. If you set to 1.65V in BIOS, the max setting of 1.55V is actually 1.65V.
I tested with Kingston DDR333 512MB using Hynix BT-J chipset, this max out at ~289MHz with RAM set to 133MHz using 3-5-11-5. Using 256MB Corsair DDR400 value aelect chips, I max out slightly higher @ 291MHz. Seems that RAM speed don't really determine the FSB you can hit. With RAM set to 100MHz, both can hit 300MHZ FSB.
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