Lots of questions about DDR3 Phenom 920

[eiamhere69]

I'd like to start by apologising for asking questions in my first post. I'ts been a little while since I messed about with components, and so am unsure about a lot of the new tech.

I understand games don't require much processor power as apposed to GPU, but I do a little video converting/processing every other day.

I am close to purchasing a Phenom 920 and will clock a little, but only on air. I am wondering which ram would be best. I have read many comparisons, but mainly before this processors release. Mainly I am unsure whether:


(all questions are in relation to the above processor)

There is a noticeable difference in performance between DDR3 and DDR2, due to DDR3 latency, but increased bandwidth.

4GB, 6gb or 8GB noticeable gains.

I would be buying this processor as part of a package, therefore the motherboard I will be getting would be a Foxconn A7DA-S. Not the best but like I say it's a offer I like. This motherboard as Xfire support, but only at 8x bus speed.

If I ran to 4770' would this be a bottle-neck? (would the Phenom?)
I thought that PCI Express at 8x would equate to PCI Express 1.0 at x16 bandwith speed.

Sorry again for such a long first post.

 

[eiamhere69]

Thanks for the reply. Just remembered that AMD boards do double channel not triple, then came back to post, but you've already stated, so probs better of with DDR2.

Do you have any idea which speed would be best would be clocking on air with this - Akasa AK-876 + couple of case fans, so not very high.

 

[eiamhere69]

Thanks. I realised not long after posting, thats why I went quite in here. Been reading up on my board, etc. (think I got confused due to the fact that foxconn are released an updated version of my board with DDR3)

AM2 chips only work with DDR2
AM3 = DDR3 (on a DDR3 board).

Every time I look for info on 920, I usually end up finding only 940 info. Probs because it's better for oc'ing with the unlocked multi.

Thanks for helping me realise my stupidity guys.