Gigabyte GA-P35-DS4 fails to keep overclock, fails to boot from cold?

khemist said:
Still happening to me now from cold boot with my p35cds3r ..thought it was sorted.
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I have the same problem with the Overclock not sticking. It's really annoying as it's been working just fine for a week. And now nothing. Clearing the CMOS got it to stick once, but the following reboot it was back to defaults.

I'm running F10 on a P35C-DS3. I don't understand what's going on as nothing has changed between now and the last week where it's been running overclocked fine.

I'm using an E2160, default 9x200 = 1.8GHz at 9x266 = 2.4GHz. Everything else stock.
 
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Iv been at this for a week now, and when I say a week its been full on.

The cold boot issue was for sure having USB legacy detect turn on in bios. Either way usb legacy detect didnt work and would force the power to shut down and reset bios.

The problem regarding keeping clock settings is very hit and miss and somtimes it would hold while other not. For a test I overclocked by only 30mhz, first boot kept it, second reset the bios. I then loaded my stable 3.06ghz profile and it loaded? I then went back to a stock clock then back to the 3.06ghz and it failed. When I got the 3.06ghz to stick, I went into windows and did 3 hours of TAT tests, it was fine. I then went into my other windows but found that the mouse wasnt working so I hit the reset button, this reset but then shut down the pc power and guess what, it reset to stock.

Iv changed the Gfx card, Moved the memory in different slots, changed the PSU, under clocked the memory and timings. flashed bios to F8 and F11 and cleared CMOS. The only thing I havent tryed is different memory. Then later on today I found a review on my very memory, the Ocz Reaper pc640 which was tested on this very board, the system clocked no problem and in fact this memory went to 1000mhz.
 
Well mine all seems to be working perfectly now, 9x333 = 3GHz, 4x1GB at 800MHz on the 2.4 multiplier (5:6 divider). Not sure exactly what the problem was. Maybe the board under volting the RAM. I had to put the RAM voltage up to +0.4V and that give a final voltage of 1.98V.

I've warm booted, cold booted, on the PATA Windows XP 64 drive and my SATA OSx86 drive and all seems to be good.
 
clv101 said:
Well mine all seems to be working perfectly now, 9x333 = 3GHz, 4x1GB at 800MHz on the 2.4 multiplier (5:6 divider). Not sure exactly what the problem was. Maybe the board under volting the RAM. I had to put the RAM voltage up to +0.4V and that give a final voltage of 1.98V.

I've warm booted, cold booted, on the PATA Windows XP 64 drive and my SATA OSx86 drive and all seems to be good.
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Adding more FSB and MCH volts helps when using more than two sticks of ram.
 
Hi, im having the same problem, except ive done everything and i still cant get it to boot.

Do you think a less aggressive overclock will help? e.g running my 6300 at near 3 gig, should i settle for 2.7 or lower?
 
ozzaman said:
Hi, im having the same problem, except ive done everything and i still cant get it to boot.

Do you think a less aggressive overclock will help? e.g running my 6300 at near 3 gig, should i settle for 2.7 or lower?
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No - I don't think it's anything do with the aggressiveness of the overclock. Just make sure your RAM isn't being clocked over its spec and increase the voltages. My board seems to undervolt the RAM quite a lot, I think that was my problem.
 
See thats what I thought as well. When i have only one stick of ram in, the system boots fine, and any overclock sticks. But as soon as i put in another stick it fails, and i get the whole cycle of rebooting again.

Ive currently got the ram voltage +0.3, which i believe puts ram at 2.1 volts. Ive got the xms 2 black pcb ram thats supposed to run at 4-4-4-12. I think i might try and push it up to 0.4 and see what happens.

As a side note, does this boot cycle have anything to do with ram timings being tightened? because i forced them in the bios to 4-4-4-12 and it seems to have triggered a worsening of the boot cycle than before.
 
Okay, further info, when i have a single stick, the overclock sticks and i can boot from cold.

When i add the second stick, it fails to boot. Is my DS4 damaged? Im certain the ram is fine, as i have tried both sticks in the same slot one by one and they both work fine.
 
Just keep adding the RAM voltage until you get 2.1Volt reading in the hardware monitor in bios. What I found is that the
+0.1
+0.15
+0.2
extra voltage settings should actually read:
+More than standard:)
+A bit more still:eek:
+A tiny bit more than the other setting:D
+About right to get 2.1volt:p
I have found none of the gigabyte bios's displayed figures accually mean anything other than an indication of weather you putting more or less volts into something.
 
Cheers for the reply Andy and clv101, but ive got the voltages very high and very low and stock, but it all makes no difference. Im sure its the board. But i came across another post in the motherboard section and i believe it was daveccc, who said he could only get two sticks to work if they were in slots 1 and 2, each individual one would work in any slot but not 2 at a time.

Seems i have the exact same problem. Ive got it working at 3.0ghz, with memory timings at 4-4-4-12 or so, but not in slots 1/3 or 2/4. Both in slots 1/2. What do you reckon the performance hit is without dual channel? negligible?
 
Going back to one of my replys to the original poster
YZFAndy said:
................
All other to auto except ACT DELAY which can cause BIG instability issues as it doesn't seem to auto set. Set that to 42 to be on the safe side. It has a tiny impact on performance but but can destroy an overclock.
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What have you got this ACT DELAY setting at in the ram. It cause me all the problems that everyone seems to be talking about. Like I said before, it doesn't auto set and causes all sorts of memory errors and overclocking restrictions.
 
I believe i did set it to 42 and the same problem.

I just came to the conclusion my ram was incompatible, its the xms thats C4 not C5, which in the big gigabyte thread is the recommended version.

Ive given up tinkering its wastes too much time. Running in single channel lets me boot any which way i like so its good enough.
 
YZFAndy said:
I found that too but even working at lower frequency it still benched a faster score.
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sorry for the late response :p. I have it stable at the same speed now, 3.64Ghz but the memory is 1:1 so 910Mhz@4-4-4-12 instead of 5:6 which was was 1092@5-5-5-15. So not too much of a tradeoff.
 
Anyone solve this as its still with me and cant put up with it no longer. If I even pull the power pllug when the pc is off, next time I power the pc Up all my settings are gone after 3 recycle post attempts.
 
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