真是回答得一針見血!

經過我這三週重新測試的結果:

測試環境及配備:
INTEL QX9770 CPU (REVERSION: C1)
Thermalright Ultra-120 Extreme COOLER 全空冷!!
MSI P7N2 DIAMOND MB (BIOS V1.1 正式版)
OCZ3P20004GK * 2
MSI N295GTX-M2D1792 PCIe V2.0 1792MB (插北橋 PCI-E 2.0)
ADAPTEC 51645 SAS RAID CARD (插北橋 PCI-E 2.0)
Intel Gigabit VT Quad Port Server Adapter (插南橋 PCI-E x8 1.0 黃色插槽)
MS WINDOWS X64

燒機測試軟體:
Super PI Mod v1.5
Orthos 2004 (TESTED 3HOURS!)
IntelBurnTest-X64 V1.9 (請注意!! 超頻 4.0GHZ 以上者,不適用這套燒機測試軟體!!)


測試 1: (TEST 3HOURS OK!)
SYSTEM CLOCK MODE: UNLINKED
CPU MULTIPLIER: 8.5 (3.91GHZ)
CPU VOLTAGE: 2.0V
CPU GTL REFERENCE VOLTAGE: AUTO
FSB COLCK: 1840MHZ (CPU FSB: 460MHZ)
FSB TERMINATOR VOLTAGE: 1.297V
RAM CLOCK: 1840MHZ
RAM CL: 8-8-8-27
RAM VOLTAGE: 2.2V
NB VOLTAGE: 1.57V
NB GTL REFERENCE VOLTAGE: AUTO
SB VOLTAGE: AUTO
PCI EXPANDER PLL VOLTAGE: 3.265V


測試 2: (TEST 3HOURS OK!)
SYSTEM CLOCK MODE: UNLINKED
CPU MULTIPLIER: 9.5 (4.275GHZ)
CPU VOLTAGE: 3.5V
CPU GTL REFERENCE VOLTAGE: AUTO
FSB COLCK: 1800MHZ (CPU FSB: 450MHZ)
FSB TERMINATOR VOLTAGE: 1.313V
RAM CLOCK: 1800MHZ
RAM CL: 8-8-8-27
RAM VOLTAGE: 2.2V
NB VOLTAGE: 1.57V
NB GTL REFERENCE VOLTAGE: AUTO
SB VOLTAGE: AUTO
PCI EXPANDER PLL VOLTAGE: 3.265V


測試 3:
SYSTEM CLOCK MODE: UNLINKED
CPU MULTIPLIER: 9.5 (4.275GHZ)
CPU VOLTAGE: 3.5V
CPU GTL REFERENCE VOLTAGE: AUTO
FSB COLCK: 1800MHZ (CPU FSB: 450MHZ)
FSB TERMINATOR VOLTAGE: 1.309V or 1.313V
RAM CLOCK: 1929MHZ
RAM CL: 8-8-8-29
RAM VOLTAGE: 2.2V
NB VOLTAGE: 1.57V
NB GTL REFERENCE VOLTAGE: AUTO
SB VOLTAGE: AUTO
PCI EXPANDER PLL VOLTAGE: 3.265V

在測試 3的部份,我用Super PI Mod v1.5 測試ok!
用Orthos 2004 會當機!

我猜想有可能是MSI P7N2主板,在記憶體的部份只能上到18xx MHZ,根本無法上到1900 OR 2000MHZ!