ASUS P5W DH - Problems + Fixes Thread

[ChronoDog]

Does anyone know how to make the board to boot above 409Mhz FSB? My 8400 boots fine at 409Mhz FSB (3,7GHz). When I change to 410MHz the CPU is running at aprox. 500Mhz, very slow I can boot at 409MHz FSB and then raise the FSB using clockgen to 445MHz without problems.

Max FSB using clockgen => http://lordm.net/files/korgan-ownage/410.JPG

Yep, sounds like the memory is holding you back. Also, increase the MCH volts to at least 1.6v to go above 410mhz stable.
The weird thing is that on that picture you get 11.453 seconds at 455x9, whilst I get 9.[something] seconds at about 100mhz less on the CPU, so you should totally check what your memory is set to

[Lurker246]

Hi guys,

Just thought I'd post this up in case anyone has got Crossfire issues with Cat 8.3.

Cat 8.3 won't run crossfire on this board with 2900's (don't know about 3870's) in XP-32 bit (Confirmed by another user on Overclock.net) All sorts of issues like stuttering (5fps - 100fps back to 5fps..etc, artifacts and screen corruption in 3d apps after coming out of sleep mode. When running 3dmark the display changes when running the CPU tests resulting in a blank screen. Went from 17k to 10k in 3dmark although enabling PEG link in bios to auto brought it up to 12k for what it's worth.

Cat 8.3 with Vista 64 on the other hand is fine, So thanks ATI for dragging me kicking and screaming onto an MS 64-bit OS

[Korgan]

Yep, sounds like the memory is holding you back. Also, increase the MCH volts to at least 1.6v to go above 410mhz stable.
The weird thing is that on that picture you get 11.453 seconds at 455x9, whilst I get 9.[something] seconds at about 100mhz less on the CPU, so you should totally check what your memory is set to

Thank you for the response! I cannot see how you get 9sec at 4000MHz? I have checked alot of screenshots from overclocked 8400@4Ghz and they all are about 12sek?

My memory is at 1:1 divider and is Kingston HyperX PC8500, so the memory should not be an issue. I am using max volt for the MCH (1,65v) and have removed the bracket with the ASUS logo and added a 60mm fan to cool it. Temperatures are fine on the MCH.

The strange thing is that I can overclock it above 4Ghz stable with clockgen. But if I try to boot above 409MHz FSB the CPU sets to 500MHz for each core. Even a E8400 is very slow at 500MHz

[lawrywild]

Thank you for the response! I cannot see how you get 9sec at 4000MHz? I have checked alot of screenshots from overclocked 8400@4Ghz and they all are about 12sek?

Most likely a SuperPi bug imo

[ChronoDog]

Thank you for the response! I cannot see how you get 9sec at 4000MHz? I have checked alot of screenshots from overclocked 8400@4Ghz and they all are about 12sek?

Memory @ 445mhz 1:1 4-4-3-5, that isn't my 24/7 FSB, but the highest I benched it at. At the 24/7 settings of 400x9, same timings and mem speed, SuperPi Mod 1.5 does 1M in a little under 13 seconds

Another thing though, pretty stupid to ask, but still - have you disabled EIST, C1E and HyperPath 3? And a few other things, check the first post in this thread...