Evga 780i did 450 FSB with my QX9650 at 10 multi no worries there.. though being heavily penalised with ram bandwithloss due to another strap... seems same on 790i too at the moment... Nvidia chips love tight ram timings while Intel chipsets prefer high speeds...

For my old Striker 1301 bios was very lovely with the Q6600 but I only ran 8x as my B3 CPU in those days got very hot...never had the chance to get a GO going on it

Below are Linflas settings... make sure you extra cool the NB otherwise you will run into trouble for sure... always make sure with a quad that you run FSB and ram in 1:1 and loosen timings to gain stability and to decrease laod on the NB...

AI Tuning: Manual
Nvidia GPU Ex: Disabled
LinkBoost: Disabled

FSB - Memory Clock Mode: Unlinked
x FSB - Memory Raio: N/A
FSB (QDR), Mhz: 1700 (means 425FSB)
Actual FSB (QDR), Mhz: 1700
MEM (DDR), Mhz: 850 (means 425Mhz speeds)
Actual MEM (DDR), Mhz: 850

Vcore Voltage: 1.6
Memory Voltage: depending on ya ram
1.2v HT Voltage:1.6
NB Core Voltage:1.45
SB Core Voltage:1.6
CPU VTT Voltage:1.55
DDRII Controller Ref Voltage:AUTO
DDRII Channel A Ref Voltage:AUTO
DDRII Channel B Ref Voltage:AUTO

tCL (CAS Latency): 5
tRCD: 5
tRP: 5
tRAS: 15
Command Per Clock (CMD): 2 clock (2T)

Advance Memory Settings
tRRD: AUTO
tRC: AUTO
tWR: AUTO
tWTR: AUTO
tREF: AUTO
tRD: AUTO
tRFC: AUTO
Async Latency: AUTO

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
MCP PCIE Spread Spectrum: Disabled
SATA Spread Spectrum: Disabled
LDT Spread Spectrum: Disabled

CPU Internal Thermal Control: Disabled
Limit CPUID MaxVal: Disabled
Enhanced C1 (C1E): Disabled
Execute Disable Bit: Disabled
Virtualization Technology: Disabled
Enhanced Intel Speedstep Tech: Disabled
LDT Frequency: 5x

PCIEX16_1 Frequency (Mhz): 100
PCIEX16_2 Frequency (Mhz): 100
PCIEX16_3 Frequency (Mhz): 100
SPP<->MCP Ref Clock, Mhz: 200