once again, overclocking e6600 + p5b deluxe [help needed]

[execine]

Hello everyone,

sorry cause this topic has been talk over for number of times.. i read, read, read but couldn't get it right...

i just got myself e6600 + p5b deluxe (updated bios 0507) + corsair xms2 6400 2x1gb memory.

I try to overclock my system to 3ghz, i can get it run at that speed, but i get prime95 errors on ram, actually i don't really know much about all those ram timings and how to work everything out, i wonder, is there any one else with same setup (probably memory could be different but same specs) who made his e6600 work at 3.2-3.4 ghz on air stable
with prime95 ? if yes, can you please post pics of ALL cpu and chipset settings in bios?

there was one thread here about the same, but some settings were missing and i probably did something not right.. and the guy isn't answering pms..

i use zalman cnps9500at cooler with zalman silver grease, got 500w psu.

i would really appreciate anyone helping me out in this situation, thank you very
much in advance...

 

[phile]

Just for fun, try this BIOS configuration:

FSB: 333
DDR2*: 666
VCORE: 1.35
VDIMM**: 2.1

SPD: disabled
Hyperpath 3: disabled (if such a feature exists on your board)
Timings**: 4-4-4-12

- You must disable Speedstep and Enhanced C1E.
- Disable anything in your BIOS that you are not using (i.e. onboard audio).

Sometimes, it also helps to disable QFAN. Your Zalman probably came with a RPM controller, so use that instead of QFAN.

* With the memory downclocked to 666 it will run 1:1 with FSB 333, and therefore require no memory divider. Your other option @ FSB 333 is to slighty overclock the mem to 833, assuming that your board supports the 4:5 ratio. Try 666 first.

** I based my suggestions for memory voltage and timings on my understanding that this is the exact kit you are using:
http://www.corsairmemory.com/corsair/products/specs/TWIN2X2048-6400C4.pdf

If this setup proves stable, try dropping the vcore a notch to see how low you can get it.

-phil

 

[execine]

actually, i got this ram: http://www.corsairmemory.com/corsair/products/specs/TWIN2X2048-6400.pdf
its without c4 at the end, probably mine is a bit worse than c4.

fsb at 333 would be exactly 3ghz, i want to make it work at 3.2-3.4 range...

btw, what are the "safe" voltage for ram and this cpu? when i made almost exact setup as you desribed, i got memory error in prime, so i upped voltage to 2.0v from 1.9 but didn't help.. didn't try going higher...

 

[phile]

Before concluding that the overclock failed, test your mem with memtest at all stock settings. You should determine that all your gear works properly before starting to o/c.

Incidentally, when you tried FSB 355, or so, to get 3.2, what was your memory clock set to? Overcloking the mem past a certain point requires loosening the timings. If you're going past FSB 333, enable SPD until you find something stable. Then, you can return and try to tighten the timings.

-phil

 

[execine]

 

[execine]

after i got error in memory doing prime at 3ghz, i tried changing memory voltage as i told to 2.0 but didn't help, so i jus left it out...
at stock i don't get any errors...

if i only knew how to adjust that timing and what the heck all those numbers mean...

 

[RichUK]

Go into the advanced option within the BIOS, and under AI tuning select manual to view all the BIOS voltage options etc if you haven?t already. Making sure before that everything is already stock and un changed within the BIOS. So to start from new.

Now set as follows:

CPU Frequency: .AKA FSB FREQUENCY. *** <-- check my paragraph below
DRAM Frequency: 533 (this means that the memory runs 1:1 with the FSB ala CPU frequency ?above setting?)
PCI Express Frequency: 100
PCI Clock synchronisation mode: 33.33
Spread Spectrum: Disabled
Memory voltage: 1.9
CPU Vcore voltage: 1.45 .. up it to 1.5 if you keep failing prime instantly
FSB Termination voltage: 1.4
SB Vcore (SATA, PCIE): 1.7
ICH Chipset voltage: 1.125


Now go into the Advanced CPU settings and do as follows:

C1E support: Disable
EIST Enhanced Intel Speed Step technology: Disable



***Now keep upping this until you hit your desired processor speed and test with Prime etc for stability.
Personally I would automatically set 389, this will give you an instant 3.5Ghz. You can start prime testing from here. You?re chip should be able to hit this speed with around 1.45 to 1.5 Vcore.

Your memory can already run 400Mhz stock, so 389 FSB is still below stock frequency as this equals 389Mhz or DDR2 778 not yet DDR2 800. Also don?t worry about the timings the BIOS will pick this up off the SPD and as it would be running under stock this would be fine.

 

[RichUK]

Also what does CPU-z report on the memory tab. Aka what timings are being shown?