FSB : clock speed help

hi,
The 600 to get stable. At least'm close to the correct settings.The CPU ran about 8 hours stable. The memory according to run memtest stable. The highest I was with the board stable is 570, while 560 are stable.

My settings for fsb 560 and 570:
fsb: 560 570
Ram: 1120 1140
GTL 0 / 2: 630 630
GLT 1 / 3: 660 660
PLL: 1.52 1.6
FTT: 1.34 1.34
DSO: 1.4 1.44
NB GTL: 600 600
To the memory but with 600 to get stable, I had the DSO to 1.48 v increase. Only then i did to get the memory stable. does anybody have a hint of what we have to do?

ATX: Thermaltake Armor VA8000SWA
NT: CORSAIR HX HX520W
CPU: E8400 E0 4.2 GHz FSB = 7.5 x560 v 1.248
BOARD: Asus P5Q Deluxe
FANS: 9x Revoltec Dark Red 5v
Graphics: 8800 GTS G92 ¤ 800 ¤ 2000 ¤ 1000

hi,
Do you have excellent views of the Skew shot clock? From 600 FSB you have to turn the clock Skew was in any event in my Rampage Extreme so. CPU Clock Skrew between 300 - 400,NB Clock Skew 100,And not every board creates the 600 FSB stable.

Stable above 560 - 570 FSB is difficult. My Rampage Extreme, I have also just for benches on the 600 FSB receive.
Was at 635 with the final benches, then got hold only the CPU-Z validation screen with 655 out. DDR3 was, however, so you have something better opportunities.

I've done yesterday night, the settings for the fsb to 580. And according Orthos runs with it with 15min. at 1024k / 896k / 768k / 640k / 512k / 448K stable.

The BIOS settings for this were:
fsb: 580
Ram: 1160
GTL 0 / 2: 630
GLT 1 / 3: 660
PLL: 1.58
FTT: 1.22
DSO: 1.36
NB GTL: 600
Ram: 2.28
LLC: disabled,But after the 600 I do not get stable, I am back down to 590 fsb.