q6600 3.4ghz (425x8) help

[wutsup]

ok so i was going for 3.6ghz but i think its a little too much right now

here are my settings for 3.4ghz (425x8) on an ep45 ds3l mobo

in prime 95 one core fails with 2-3 minutes. and says fatal error 0.5 was expecting 0.4 or something like that

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster -------------- : [Auto]
CPU Clock Ratio ---------------------- : 8
Fine CPU Clock Ratio ----------------- : [0.0] < ignore if not available
CPU Frequency ---------------------: 3.40ghz (425x8)
Clock Chip Control
Standard Clock Control
CPU Host Clock Control --------------- : [Enabled]
CPU Host Frequency (Mhz) --------------: [Mhz] 400
PCI Express Frequency (Mhz) ---------- : 100
C.I.A.2 ------------------------------ : [Disabled]
Advanced Clock Control ------- [Press Enter]
CPU Clock Drive ---------------------- : <<< 800
PCI Express Clock Drive -------------- : <<< 800
CPU Clock Skew (ps) ------------------ : <<< 0
MCH Clock Skew (ps) ------------------ : <<< 0
DRAM Performance Control
Performance Enhance ------------------- : Standard
(G)MCH Frequency Latch ---------------- : Auto
System Memory Multiplier -------------- : 2.50A
Memory Frequency (Mhz) ---------------- : 1063
DRAM Timing Selectable ---------------- : Manual
Standard Timing Control
CAS Latency Time -------- ?? ---------- : 5
tRCD ------------------- ?? ---------- : 5 (manufacturer timing is 6) but i dont think this is causing a core to fail in prime(rounding error) ormaybe it is
tRP --------------------- ?? ---------- : 5(manufacturer timing is 6)
tRAS ------------------- ?? ---------- : 18
Advanced Timing Control
tRRD ------------------- ?? ---------- : [Auto]
tWTR ------------------- ?? ---------- : [Auto]
tWR --------------------- ?? ---------- : [Auto]
tRFC ------------------- ?? ---------- : 55
tRTP ------------------- ?? ---------- : [Auto]
Command Rate (CMD) -------------------- : [Auto]
Driving Strength Profiles
Driving Strength --------- : Press Enter <--- press ENTER to modify memory sub-timings when overclocking
Channel A
Static tRead Value ----------- ?? ------ : [Auto] 7
tRD Phase0 Adjustment -------- ?? ------ : [Auto]
tRD Phase1 Adjustment -------- ?? ------ : [Auto]
tRD Phase2 Adjustment -------- ?? ------ : [Auto]
tRD Phase3 Adjustment -------- ?? ------ : [Auto]
Trd2rd(Different Rank) ------- ?? ------ : [Auto]
Twr2wr(Different Rank) ------- ?? ------ : [Auto]
Twr2rd(Different Rank) ------- ?? ------ : [Auto]
Trd2wr(Same/Diff Rank) ------- ?? ------ : [Auto]
Dimm1 Clock Skew Control ----- ?? ------ : [Auto] ps
Dimm2 Clock Skew Control ----- ?? ------ : [Auto] ps
Channel B
Static tRead Value ----------- ?? ------ : [Auto] 7
tRD Phase0 Adjustment -------- ?? ------ : [Auto]
tRD Phase1 Adjustment -------- ?? ------ : [Auto]
tRD Phase2 Adjustment -------- ?? ------ : [Auto]
tRD Phase3 Adjustment -------- ?? ------ : [Auto]
Trd2rd(Different Rank) ------- ?? ------ : [Auto]
Twr2wr(Different Rank) ------- ?? ------ : [Auto]
Twr2rd(Different Rank) ------- ?? ------ : [Auto]
Trd2wr(Same/Diff Rank) ------- ?? ------ : [Auto]
Dimm1 Clock Skew Control ----- ?? ------ : [Auto] ps
Dimm2 Clock Skew Control ----- ?? ------ : [Auto] ps
Motherboard Voltage Control
CPU
CPU Vcore --------------- 1.????? ---- : 1.475
CPU Termination --------- 1.200V* ----- : 1.4
CPU PLL ----------------- 1.500V* ----- : 1.55
cPU Reference ----------- 0.755V* ----- : [Auto]
MCH/ICH
MCH Core ---------------- 1.100V ------- : 1.3
MCH Reference ----------- 0.800V ------- : [Auto]
ICH I/O ----------------- 1.500V ------- : [Auto]
DRAM
DRAM Voltage ------------ 1.800V ------- : 2.1(manufacturer settings)
Advanced Settings
Limit CPUID Max. to 3 ------------------ : disabled
No-Execute Memory Protect -------------- : Enabled
CPU Enhanced Halt (C1E) ---------------- : disabled
C2/C2E State Support ------------------- : disabled
x C4/C4E State Support ----------------- : [Disabled]
CPU Thermal Monitor 2 (TM2) ------------ : enabled
CPU EIST Function --------------------- : disabled
Virtualization Technology -------------- : disabled
Integrated Peripherals
Legacy USB Storage Detect ------------- : disabled

[fatguy1992]

Re: q6600 3.4ghz (425x8) help

From my testing (and i'v done a lot Q6600, E5200, E8500) the MCH reference plays a massive role in getting a stable overclock, for me it is the difference between not posting and being stable. It seems to work best for me if it is set to 0.926v (if VTT is 1.4v like yours). If that works try lowering the VTT back down to 1.3v or below, I only need 1.22v for 425FSB, but I have a golden chip. I know i'm using a UD3P/R, but yours is also a P45 chipset with very similar settings to mine.

[wutsup]

Re: q6600 3.4ghz (425x8) help

should i also try reducing cpu vcore and cpu termination and raise cpu reference?

[fatguy1992]

Re: q6600 3.4ghz (425x8) help

First off see if you can get it stable with those settings (but change the MCH Reference). Then save those settings into the BIOS, then try lowering Vcore, PLL and VTT while still remaining stable.

[wutsup]

Re: q6600 3.4ghz (425x8) help

when your talking about your 1.22 were you talking about your cpu vtt or fsb vtt cause i dont see any setting for fsb termination

[fatguy1992]

Re: q6600 3.4ghz (425x8) help

I was talking about the VTT, CPU Termination is the same as FSB Termination as far as I know. Some mobo manufactures call it CPU Termination, some say FSB.

[wutsup]

Re: q6600 3.4ghz (425x8) help

ok so i tried what you suggested and i lasted a bit longer in prime 95 but core 0 still fails at 8 minutes instead of 2 minutes. what settings do you suggest?

[fatguy1992]

Re: q6600 3.4ghz (425x8) help

Hmm, since it worked a little better, try increase the MCH reference and if that doesn't work try decreasing it. Also u can try a MCH clock skew of 50ps.

[Lsdmeasap]

Re: q6600 3.4ghz (425x8) help

Well two things I would suggest, yes you using the incorrect MAIN timings for your ram can cause those errors. Your ram is only rated/tested to work at 566-18 meaning it is made from cheaper chips, so if you want to use 555-18 you will have to push more voltages thru it and even then that may or may not work. I'd suggest you use the correct timings for now.

I also suggest you use less MCH voltage, you should not need that much for only 425 FSB and 4GB of ram, try 1.22-1.26

[wutsup]

Re: q6600 3.4ghz (425x8) help

ah ok lsd i will change the timings back to normal. do you thihnk i could lower the cpu vcore and termination then?

[Psycho101]

Re: q6600 3.4ghz (425x8) help

You need to test again at stock memory timings first. I'd also keep them at stock till youre stable, then tightem them.

Some Q6600's, even G0's might never be able to get to 3.4 stable, but I'd keep trying at the minute.

Don't ignore CPU reference either. I tried everything on my Q8200 to get 3.4GHz stable, I was stuck at 3.2 for ages until I upped CPU ref by one notch. After that I was rock solid, and able to lower VTT and PLL as well, to 1.24V and 1.57V respectively.

[wutsup]

Re: q6600 3.4ghz (425x8) help

ok so i tried what LSD told me and now it wont boot into windows after the post screen it says like corrupted file or missing file in system folders or something. but when i go back to my 3.2ghz settings i can get into windows fine. is sometehing wrong with my harddrive? or does this happen when oc'ing?

[Psycho101]

Re: q6600 3.4ghz (425x8) help

You're hard drive is ok. I've had the same kind of messages. It's more like the file being corrupted by the CPU or memory due to incorrect settings. The corruption occurs after the file is read from the drive, and goes to RAM.

[wutsup]

Re: q6600 3.4ghz (425x8) help

well i tried what you guys said with cpu refernce and mch reference i cant get it to boot intro windows. i get these corrupt errors, missing boot manager errors and stuff. maybe 3.2ghz is the limit. i dont know lol