New system unstable

Okay I built this box last week and have been having issues since day one...
Hardware:
OCZ 500 watt stealth stream PSU
Cooler Master RC-690 case
Western Digital Caviar Black 620GB HDD
Samsung 22x DVD Burner
ASUS M4A78T-E Socket AM3 790GX chipset (BIOS 2105) MoBo
onboard Radeon HD3300
AMD Socket AM3 Phenom II X4 965 BE (stock HSF no overclock)
4GB (2X2GB) OCZ obsidian DDR3 1600
an old compaq keyboard
a new Logitech wireless mouse
and ancient Northgate Innovations 15" LCD Monitor

I am running Win7 64bit Pro

I have RAM set in BIOS @1333mhz as my MoBo doesn't run 1600 natively, also I have the voltage set to 1.66 manufacturer specs is 1.65 but my BIOS only allows .02 increments)

it all started the day I built the system (less then a week ago) I built it, updated my BIOS, and all AMD/ATI drivers for my hardware.I started getting TDR events with my ATI driver being recovered/restared, shortly followed by a BSoD. After a crash course in the most basic usage of window debugging tools I saw it was calling out Atikmdag.sys, which after much forum trolling and googleing seems to be a pretty widespread issue. When I had the most up to date ATI drivers and catylist control center installed i would get TDR events every minuet or so, and my display was crappy, kind of pixleated showing small 'tears' or slits in the desktop and big flashing blocks like an old NES game not loaded right. If I used the scroll wheel on my mouse the page i was scrolling would go blank... Anyways after uninstalling all ATI software I can now at least use the comp, but it is still failing prime 95 when I run blended and if i stress the onboard GPU at all i get TDR or BSoD probably because i am not using ATI drivers.

Basicly I have tried old drivers, newest drivers, drivers only wih no CCC, only one stick of RAM, MSCONFIG/Boot Tab and manually setting cores and Max RAM, I have also tried running my RAM in different slots/channels. So far the only way I have been able to keep the system stable enough to even test stability is by not running any ATI software/Drivers at all, but now my GPU is basically garbage and I am still having stress test problems with the whole system.

A Major concern of mine is I don't know if i should change my RAM out for something with more documented support from my MoBo, could the RAM failing be adding to all my Blue screens and the failure of my GPU? I have succesfully run Memtest86+ on my RAM for a couple hours with no failure so i think the RAM is good but it might not be interacting well with the rest of my set up... considering the fact that the onboard GPU is supposed to use it's dedecated RAM and also pull from my physical RAM if my system memory wasn't working right could that create a gpu crash? I assume if I am not running the proper driver my GPU is only pulling from one location.

I have posted in a few other places as well but so far noone's been able to help me figure this one out yet. I am not really sure what to try next other then new RAM specifically blessed by ASUS for my board and maybe a video card.

Well I was looking at the ASUS site and the only supported memory list is loaded with 2X1GB packs and outdated packs I can't even order off newegg anymore.
I still got a bad feeling about the RAM I just don't know what to try. The RAM pases memtest86+ for a like 3 hours.. I have since set more of the voltages to manual and upped my northbridge a little, which allows me to run the ATI driver but only if I turn aero off and if I try to spin up the embedded GPU like to play a game or whatch a video it'll flash and tear. I gotta try and find a GPU to plug into this thing.