Overclocking i7 930 with CM V8

I think you can do it.

first i would like to thank you for replying
second anybody knows what the temps well be because i was thinking to buy liquid cooling but unfortunally my case dosent support that

The settings I used to get a 24/7 oc with my I7 920 dO

Advanced CPU Features:-
CPU Clock Ratio - 21
Intel (R) Turbo Boost Tech. -disabled
CPU Cores Enabled - enabled
CPU Multi-Threading - enabled
CPU Enhanced Halt (C1E) - enabled
C3/C6/C7 State Support - disabled
CPU Thermal Monitor - enabled
CPU EIST Function - enabled
Bi-Directional PROCHOT - enabled

Uncore & QPI Features:-
QPI Link Speed -36
Uncore Frequency - 17
Isochronous Support - enabled

Advanced Clock Control:-
Base Clock (BCLK) Control - enabled
BCLK Frequency (Mhz) - 175(175x21=3675)
PCI Express Frequency (Mhz) - 100
C.I.A.2 -
CPU Clock Drive - 700
PCI Express Clock Drive - 700
CPU Clock Skew -
IOH Clock Skew -

Performance Enhance - standard
Extreme Memory Profile (X.M.P.) - disabled
System Memory Multiplier (SPD) - 8
DRAM Timing Schedule (SPD) - 1400

**The following 5 options need setting for each stick of ram**
The following must be the cas latency of your ram
CAS Latency Time 9
tRCD - 9
tRP - 9
tRAS - 24
Command Rate (CMD) - 2

Load-Line Calibration -standard
CPU Vcore - 1.175
QPI/Vtt Voltage -1.295
IOH Core - auto
DRAM Voltage - 1.5

For a overclock to 3.5ghz on a i7 930 the cm v8 is a great cooler so u would not be needing liqued cooling

And the safe temps for your CPU on load should no be more than 72c under prime 95 that is

72.x is the max tcase temp, from Intel.
If you can avoid it, I like to keep the cores out of the 80's.