P6N SLI + 4x1GB Slowdowns FIXED

Question

Hi,
I was one of the happy few that are struggling to get my 4x 1 gb sticks (kingston hyperX 6400 DDR2) working proparly on my P6N. I saw many of you struggle with this so my post might help you out. 
Short description of my problem:
With 2x 1GB installed my system(vista 64 Ultimate) worked fine, however 2GB of ram seems fairly too less for vista 64 so i bought additional 2GB (2X 1GB of EXACTLY the same brand & type). After installing the additional 2 sticks of ram my system suffered a HUGE lack of performance(Vista boot time +5 min). My problem was exactly  like discribed in this topic:
https://forum-en.msi.com/index.php?topic=106168.0
So, i first updated my bios to the latest version and tested ALL possible bios settings regarding memory timings etc....still no-go after this.
To fix the issue i examined the nemory modules with CPUZ and figured the only difference was the production date of the memory modules.
So i got:
2 x 1GB sticks with production date: 4(week)2007
2 x 1GB sticks with production date: 13(week)2007
Putting the sticks in a special sequence into the memory slot  FIXED THE PROBLEM:
SLOT(COLOR)                      MEMORY STICK PRODUCTION DATE       
1(GREEN CHANNEL A)            04-2007           
2(ORANGE CHANNEL B)          04-2007
3(GREEN CHANNEL A)            13-2007
4(ORANGE CHANNEL B)          13-2007
So generally we can say[if you have pairs of stics that differ in production date]:
DO NOT PUT 2 STICKS WITH THE SAME PRODUCTION DATE IN ONE CHANNEL!!!!

Answer 1

Yeah, that's wierd.
Seems like you would want to run like modules in the same channel, not a mixed pair.
I was reading an old article about DDR vs. DDR2 with the Athlon CPUs when DDR2 first began to be implemented on AMD mobos. I was wondering if there has been much discussion about the ability to run 4 GB at 1T command rate with the C2D and current mobos. Or is everyone pretty much resigned to 2T Cmd Rate? NovJoe, have you seen any traffic like that?
From what I've read, at DDR-800 it's difficult to maintain 1T with only 2GB installed. Thus the loose timings we see nowdays.