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KN9 and AMD AM2+ 7850

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May 11, 2011 7:34:40 AM

Hello
Does anyone have any experience of Abit KN9 main board working with AMD 7850 (AD785ZWCJ2BGH). Officially is not supported, but I wonder if latest BIOS may make it work?

More about : kn9 amd am2 7850

a b À AMD
a c 216 V Motherboard
May 11, 2011 2:19:57 PM

In all likelihood, it will work fine. AM2+ CPUs generally work fine in AM2 mobos. Just make sure you flash your BIOS to the most recent version BEFORE you install the new CPU.

Good luck!
May 12, 2011 5:30:13 AM

updated bios to the newest - doesnt work...
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a b À AMD
a c 216 V Motherboard
May 12, 2011 11:54:11 AM

Is this a new CPU or a used CPU?
May 13, 2011 11:32:50 AM

brand new

I also thought it could be lack of power, but when disconnected CD, flopp still wont up. Anyway I don't think it could be such a big difference between Ahtlon 3200+ and the new one in terms of power consumption...
a b À AMD
a c 216 V Motherboard
May 13, 2011 11:53:27 AM

Not a power issue. Could just be that your mobo doesn't work with the 7850. I have 2 AM2+ procs in systems where they are not on the CPU compatibility list and have have no problems. With the older mobo, your only options are a newer mobo or return the CPU for one compatible with your rig.
May 14, 2011 9:02:02 AM

I have oher question.
Highest supportd by m mobo model is 6400+. 6400+ black edition is not listed, but they listed 5000+ and 5000+ black edition as seperat models.

http://www.abit.com.tw/cpu-support-list/mb/nv_nforce4ul...

This is confusing because it suggest that 6400+ black may be not supported, however there are no deifferences between 6400+ and 6400+ black in terms of technology apart from that it is unlocked and easy to tweak... Tell me if I am wrong?
a b À AMD
a c 216 V Motherboard
May 14, 2011 2:25:46 PM

The 6400+ and the 6400+BE are the same CPU as far as your mobo is concerned. The difference in the BE being unlocked (for easier overclocking).
!