need help upgrading my gaming PC

MasterFURQAN

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Oct 26, 2012
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Hi.
I'm upgrading my PC .. i've chosen these components:
fx 6300 (already bought )
hd 6770 (already have)
cooler master 500w psu (already have) below :

http://www.coolermaster-usa.com/product.php?product_id=2757

corsair vengeance 4gb @ 1600 mhz (not yet bought)

I'm yet unable to choose a mobo.. these specs are what i want :
am3+ socket [quite obvious ]
PCIE 3.0 .. for GPU upgrade headroom
At least 1600 mhz ram clock support
4 ram slots with 8gb each support ..toal 32 gb
USB 3.0 support
these are my confusions :
1) hd 6770 supports pcie 2.1 .. will it work on pcie 3.0.. ie; is PCIE forward compatible

2) the PSU above has 4+4 pin +12v CPU power connector... and the most mobos i came across have have 8 pin 12v cpu power connector .. will it work on these mobos
eg , i came across this mobo:

http://www.flipkart.com/gigabyte-ga-78lmt-usb3-motherboard/p/itmdeg8jwxzjap4f?pid=MBDDEG8JWXZJAP4F&otracker=browse&pageNum=1

3) additionally I've seen some guys writing That the above mobo supports 1600 mhz ram with bios update .. is it true i think I'd buy it..

Plzzzz guys clear ma confusions and suggest me a gud mobo in the 70 to 80 $ range if the above mobo is bad..
thanks in advance
 

MasterFURQAN

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Oct 26, 2012
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@IRONBATMAN
the psu has dual +12v rail.. 12v1 with 18 amps and 12v2 with 18 amps... so it has a total of 36 amps on the +12v rail...
@everyone ...
what about my other Qs... if the mobo has 1600 mhz ram support
 

MasterFURQAN

Honorable
Oct 26, 2012
75
0
10,640
@IRONBATMAN
the psu has dual +12v rail.. 12v1 with 18 amps and 12v2 with 18 amps... so it has a total of 36 amps on the +12v rail...
@everyone ...
what about my other Qs... if the mobo has 1600 mhz ram support
 

Dylzan

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Aug 2, 2013
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11,660


The amperage doesn't combine.