You don't say what speed your RAM is but I will assume 1600 MHz. First step is to make sure your RAM is not holding you back. This is a very basic procedure....read various OC guides to get an understanding of what you are doing.
1. Download Memtest+ from www.memtest.org and put on a CD / DVD.
2. Enter your BIOS, w/ all settings at default, go into memory section and set CAS timings manually. Leave all voltages on Auto for time being. Save and exit.
3. Re-enter and back up BIOS if your MoBo has capability.
4. Set BIOS tweaker or what ever your BIOS call it to manual (from auto) so as to allow you to change settings.
5. Set CPU multiplier to 12 (133 x 12 = 1.6 Ghz). This is to make sure that as system BCLK is increased any CPU issues are eliminated because CPU is running well below rated speed.
6. Assuming you have DDR 1600, set memory multiplier to 12 (12 x 133 = 1600 MHz), Use 10 if you have DDR3-1333, 8 if you have DDR3-1066.
7. Save and exit. Reboot with memtest CD and run for 12 hours. If it passes w/ no errors, you have proved that memory can run at rated speed. If it doesn't, RMA the memory.
8. Assuming you have:
- DDR 1600, set BCLK to 160, memory multiplier to 10 (10 x 160 = 1600 MHz),
- DDR 1333, set BCLK to 167, memory multiplier to 8 (8 x 167 = 1333 MHz),
9. Save and exit. Reboot with memtest CD and run for 12 hours. If it passes w/ no errors, you have proved that memory and system can run at those clocks .
10. Enter BIOS, set CPU multiplier back to Auto from 12. At 160 BCLK your CPU speed will hit 3.2 Ghz (3.33 w/ turbo) and 3.4 (3.53 w/ turbo) w/ 167
11. Run 20 passes of Linx to see if its stable (5 minutes) monitor temps with coretemp or realtemp, system status w/ CPU-Z ...if not back off BCLK, if so...
12. Run OCCT CPU test for 60 minutes, if fails, back off BCLK, if passes....
13. Run P95 (blend) overnight.
You can skip 13, till you "hit a wall" .... keep increasing BCLK (start w/ increments of 3 and drop back to 1 when you fail) till you get a failure. Always check that memory multiplier is set such that BCLK x multiplier = < your RAM rating. If you fail, try increasing voltages. Max CPU voltage I would go with is 1.35 ... max DRAM voltage is 1.64xx (whatever it is to not go over 1.65000)
If temps are high, lower CPU voltage....I have a 3.7 Ghz "everyday" OC profile running at 1.125 core voltage and 1.546 DRAM voltage....keeps temps in the low 50's for long life.
read this for a good education on OC'ing Asus Boards
http://vip.asus.com/forum/view.aspx?SLanguage=en-us&id=20081220191040237&board_id=1&model=P6T%20Deluxe&page=1&count=66
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