Hey guys, I was hoping someone can help me with a problem I'm having swapping graphics cards on a EP45-DS3R motherboard.
My current configuration is as follows:
Processor: Q6600 (mildly overclocked to 3GHz)
Motherboard: EP45-DS3R F10 firmware
RAM: 8GB (4x2GB) Patriot DDR2 800 (mildly overclocked to 833)
Graphics: NVIDIA 8800GTS 640MB
Cooling: Zalman CNPS9300
Power Supply: Zalman 600W (I think)
This setup has been running rock-solid 24x7 for months with uptimes of many weeks in between OS updates that require a reboot (it's a hackintosh). No hangs, crashes, slowdowns, kernel panics or any such problem. Just pure stability.
Recently I decided to upgrade the graphics to a faster 9800GTX+. That's when things went a bit pear shaped. The seemingly simple act of removing the old 8800GTS and slotting in the new 9800GTX+ caused the mobo to fail during POST, causing it to reboot using the fail-safe settings. It boots to OS X using the fail-safe settings OK, but stability is now an issue as it hangs roughly once every 24 hours.
I've played around with RAM/CPU/NB voltages, messed with RAM timings, locked the PCI-E at 100 and tried various other tweaks I found through Google to see if I could get it to pass POST at 3GHz, but without success. In fact, even when I drop the back to 2.4GHz it still won't pass POST. It seems the only thing that works if the fail-safe settings, an even they aren't stable. I reverted back to the old graphics card and all is as it was.
Any suggestions on where to look next?
TIA, any help appreciated.
My current configuration is as follows:
Processor: Q6600 (mildly overclocked to 3GHz)
Motherboard: EP45-DS3R F10 firmware
RAM: 8GB (4x2GB) Patriot DDR2 800 (mildly overclocked to 833)
Graphics: NVIDIA 8800GTS 640MB
Cooling: Zalman CNPS9300
Power Supply: Zalman 600W (I think)
This setup has been running rock-solid 24x7 for months with uptimes of many weeks in between OS updates that require a reboot (it's a hackintosh). No hangs, crashes, slowdowns, kernel panics or any such problem. Just pure stability.
Recently I decided to upgrade the graphics to a faster 9800GTX+. That's when things went a bit pear shaped. The seemingly simple act of removing the old 8800GTS and slotting in the new 9800GTX+ caused the mobo to fail during POST, causing it to reboot using the fail-safe settings. It boots to OS X using the fail-safe settings OK, but stability is now an issue as it hangs roughly once every 24 hours.
I've played around with RAM/CPU/NB voltages, messed with RAM timings, locked the PCI-E at 100 and tried various other tweaks I found through Google to see if I could get it to pass POST at 3GHz, but without success. In fact, even when I drop the back to 2.4GHz it still won't pass POST. It seems the only thing that works if the fail-safe settings, an even they aren't stable. I reverted back to the old graphics card and all is as it was.
Any suggestions on where to look next?
TIA, any help appreciated.
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