Decent motherboard to support FX-6100 HIGH overclocking (4.5Ghz+)?

I vouch 1 vote for the Gigabyte GA-990XA-UD3, I own this board and it is so good with overclocking processors, I've never touched a FSB wall when overclocking.

Please bare in mind that your CPU could also be limited and could not OC to 4.5Ghz, it isn't just motherboard dependant. good luck with the overclock

Asus M5A99X EVO has ONLY 6+2 Phase (Voltage Regulators, VRMs). This might be enough for overclocking, but it is not meant for enthusiast like you want to go further 4.5Ghz. Therefore don't buy this motherboard.

These are two good boards I would like you to own.

1) Gigabyte 990FXA UD3 and XA UD3 are good choice and is best buck for the bang.
http://www.amazon.com/GIGABYTE-GA-990FXA-UD3-990FX-SATA-Motherboard/dp/B0055QYKQO

Good: 8+2 phase, high quality 108db SNR onboard audio with Dolby Home Theater support,

Bad: VRM heat sink is not that enough big for 8+2 phase

And

2) 'MSI 990FXA GD65' of $169
http://www.amazon.com/MSI-Computer-Corp-990FXA-GD65-990FX/dp/B005A31PVA

Good: 8+2 phase, larger heat sink when compared to UD3, 4 x 3Pin Fan headers (as you said you want it ), Overclocks well with least Vdrop

Bad: Lower quality audio 95db SNR when compared to UD3

(Don't be afraid of horror stories of blowing up of old MSI Boards (up to 890Fx series), those all were 4+1 phase, And I guaranty you will not be in any problem with this board.)

Three things in GD65 are better when compared to XA-UD3/FXA-UD3..1st is least Voltage drop, 2nd is More Fan connectors and 3rd is larger VRM heatsing to keep the VRM cooler than UD3, I am telling this because your main intention is to overclock higher and MSI GD65 has larger VRM heat sink over Gigabyte UD3's small heat sing. Also Vdrop in UD3 might be horrible when higher overclocking. As long as reviews showed that no significant voltage drop at higher overclocking with 990FXA GD65.

I know prices exceeded the range, but what you are talking about overclocking to 4.5+ GHz is often very hard / risky / tweaky with cheap motherboards. That is why you will have to spend at least $145 if you want safer operation with least issues. Also note what OC-Guru told you already that Overclocking isn't just motherboard dependent. Some chips (CPU) can do it easily otherwise some chips can not do no matter how high voltage you have set in the BIOS in your high end motherboard.

Good luck from me too
Edited by sumitlian - 5/18/12 at 7:51pm

Gigabyte 990XA-UD3's price is good, but it has very small VRM heat sink too.

Extreme4 should be fine too.
Edited by sumitlian - 5/18/12 at 9:49pm

The VRM heatsinks are more than enough to keep the VRMs cool.

All rev. 1.1 gigabyte 990FX motherboards have Load Line Calibration, therefore you won't get any significant vdrop by adjusting LLC settings with these motherboards.
Unfortunately my UD5 rev1.0 lacks LLC

Oh yes... My bad, I forgot 990XA GD55. There seems no problem with this board.

There was no problem with previous MSI motherboard's Phase. Initially all these boards had been designed for quad core 125w CPU. These MSOFETs were capable to provide enough current to support a 125watt Quad Core CPUs. The only thing MSI did absolutely wrong that they released a BIOS supporting Phenom II X6 CPUs for their 4+1phase motherboards. Obviously 4+1 phase power circuitry is not designed for Phenom II X6's power requirements. Those boards were also lacking Hardware Thermal Protection (reduce voltage/frequency at critical temperature). That is why MSOFETs were blowing up. That is why they were failing. MSI itself was responsible for their dis-reputation. This doesn't mean that they have buggy hardware. I too had an old 790FX GD70. Never had a single problem with stability and reliability with that board. Only it failed because I was overclocking my Thuban. They really should not have support for six core cpus on their old boards.

Well All MSI 990FX motherboards don't suffer this problem. All their MOSFETs/chokes/Capacitors are of high quality and enough for overclocking of even 8core FX CPUs. However I am still unaware that MSI motherboard support Hardware Thermal Protection for their VRMs, like Almost all ASUS, ASrock, Gigabyte boards support it.
But there is no failure incident of MSI 990FX boards even at extreme overclocking in reviews/forums.

Of course if you are able to attach large and compatible heatsink to Gigabyte UD3, then UD3 could be the best buy. Just make sure it is revision 1.1 board.

As you have seen no hardware is perfect. (I want you to tell why I mentioned that UD3's stock heat sink may not be enough because I've seen in this forum that some people have blown up the VRMs of even UD3 while overclocking 8 core FX CPU. They all were saying that the heat sink was not enough to resist most heat.) Just for knowledge even a $400 ASUS board (Rampage IV Formula) has been seen failing VRM while overclocking a Sandy Bridge E CPU to 5GHz . Don't be so tensed, at least your FX 6100 is not able to kill any 8+2phase board.

You and I together have filtered many problems with almost all motherboards.
Now the choice is yours
Edited by sumitlian - 5/19/12 at 11:28am

no offence brother but the only problem with the UD3 is with 8 core FX CPU overclocking. FX 8xxx power consumption is extremely high when the are overclocked. Because they are able to consumpt high wattage at lower voltage. This is why you can calculate yourself that the current requirement is much high (W=V*A) than Thuban, FX 8xxx really put much load on a 8+2 phase board than any other CPU can do. Also some UD3 users have blown up VRMs when overclocking FX 8xxx to ~4.5-5.0GHz.. That is why I was suggesting to make it the best of the best.