Mobo question

[upshutdown]

Hey guys, so I am new to these forums, i was checking out certain reliable forums, and this one looked pretty good, so for my first ever question ...

I am upgrading my custom desktop as follow

1g DDR2 Ram - > 4g DDR2 ram, 2x2
Radeon X1950 pro -> EVGA Nvidia 9800 GTX
Core 2 Duo 1.86 GHz -> Core 2 Duo either 2.7 GHz or 3.0 (still deciding for price reasons)

currently i have a MICRO-STAR INTL MS-7238 Motherboard...I am wondering if for the upgrades i am getting do i need to also upgrade the MoBo, if so what would be a good one for a fairly reasonable price.
Thanks a bunch

 

[Fat.Clown]

seems like that MSI board only supports up to 1066fsb
so if you were thinking about an E8x00 you can forget it

only other thing I'd look at is your power supply

 

[upshutdown]

Ok so it looks like im gonna be upgrading my mobo to EVGA 123-YW-E175-A1 LGA 775 NVIDIA nForce 750i SLI ATX Intel Motherboard

now my power supply is Antec truepower Trio with an output power of 550 W...please tell me that enough

 

[Fat.Clown]

PSU good to go

you can just get the E7x00 if don't want to upgrade the motherboard....
like this one Intel Core 2 Duo E7400 Wolfdale 2.8GHz 3MB L2 Cache LGA 775 65W Dual-Core Processor

 

[upshutdown]

Hm so if i get that processor, i can run all my upgraded hardware on my current MoBo?
meaning im good with my EVGA 512-P3-N871-AR GeForce 9800 GTX(G92) 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card

 

[Fat.Clown]

yes

and I recommend the 98000gtx+ over just the 9800gtx

 

[upshutdown]

hmm, much of a price dif? still compatible? psu will still be ok?
god i feel like a nub
oh and whats the diff between the 512MB and 1G on a graphics card...does it really matter if i get the 1g?