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hi guys i need a motherboard to overclock my 640 my current motherboard M68MT-S2P is not able to overclock the cpu (tho it has the overclocking setting in the bios) i have a tight budget of 2.5k to 3k pls i want is urgently
AMD II X4 640 mobo ???????
I don't think there's any great Over Clocker mobo available for around 3k but take a look at Gigabyte GA-MA785GMT-US2H ( DDR3 ) @ ~3.5k - which should be enough to OC a Athlon II quad core cpu 
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how about a ausu asus M4A78LT-M what price can in get it and if u can tell me a shop where i can get it in that rate pls if u can
^^ Can't tell you exact price of Asus M4A78LT-M but M4A78LT-M LE is around ~2.6k but it would be better if you can get M5A78L-M LX @ 2.8k instead
M5A78L-M LX is very good board in its price range, specially considering that it is under 3K tag.
^^ one catch is that it only supports cpus upto 95W TDP but it's perfectly suitable for Op's need - moreover it will support some upcoming BD cpus for sure
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^^ sure lolzzz 