Well first off let me say I am a hardware whore.
I have owned the ASUS A8N-SLI Premium and deluxe. The SLI LANPARTY and the SLI EPOX, and the MSI Diamond. Like I said I am a hardware whore. However about 5 months ago I read an AnandTech article about the Jetway motherboard and thought I would give it a try... I haven't switched yet, which is crazy coming from me.
Linky. I didn't think I would ever try it, because of it not being a big name, but just go through the article. It has some amazing specs and benchmarks. Couple that with it being 120 at newegg, and you have a winner. It is also the only board I have ever had that I didn't have to do anything to when I set it up. Another really nice thing about this board is you can get it here free (well almost free)
Linky. It is a eVGA branded board but it is the same board, I think a different color PCB though.
I also went with the G. Skil 2GB RAM kit, AnandTech just did a review on it in their 2GB kit roundup and liked it, however if you ask me my favorite RAM it would be the OCZ plat, that you picked out. I went with the g. Skil because it uses the same RAM modules the OCZ Plat uses and at the time was about 40 bucks cheaper, but now it is more expensive than the Plat so I would go with the OCZ
I like your CPU pick, I use the 3500, but it is because I haven't jumped to dual core yet.
I like your PSU, but for the money I like the SeaSonic a bit more.
Linky. I have used it for 8 or 9 months now with no complaints at all. It is completely silent and I've noticed no voltage problems at all.
I use the same video card and like it a lot. It plays all the games I want it to, CS:S, DOD:S, FARCRY, and BF2. And if you want this card I suggest the 349 combo listed above, it cost 50 bucks more than the stand alone card, but with the motherboard it makes it a steal.... because I will guarantee you will not be disappointed in the motherboard.
350 eVGA combo
125 SeaSonic PSU (plus 10 MIR)
240 OCZ RAM (Plus 40 MIR)
110 WD HDD
313 AMD 3800 X2
1138 Total (plus 50 in rebates)
If I had a budget like yours and saved some money on the Motherboard I would look at the 4400 x2. You jump up to 2.2GHz and 1 mb cache per core (2mb total). If you did that you total would come to:
350 eVGA combo
125 SeaSonic PSU
240 OCZ RAM
110 WD HDD
470 4400 X2
1295 Total plus 50 MIR = $1245
So at this price you maybe able to get you a nice DVD burner or something if you do have it and still be under the 1300 mark after rebate. Or you might want to pick up a 75 dollar Audigy 2 zs sound card if you don't have a nice one. Who knows.
My main point would be: get the eVGA combo if you are getting the eVGA 7800GT, because that motherboard is a beast, I love it, and so did the AnandTech review. With the money saved you can up the PSU and the CPU and still stay on budget or save the money for a second 7800GT down the road.
kd
ps sorry for the book