Stability issue
- Thread starter TMaksimov
- Start date
Leave the RAM OC alone for now. Find the sweet spot for your Chip. I was doing the same mistake by OCing the Chip with MEM running on crazy XMP settings. Once you Nail your 4 Ghz OC, then try tweaking your RAM.
As TTL mentioned, Chip lottery could be playing its part here. I have mine running 4 Ghz at 1.29 vcore and 1.30 Vt
My 2 cents...
IB
williamlexcrawford
New member
I was in sort of a similar boat. 20x200 at 1.3v didn't work out for me. 21x191 with the same volts works fine.
I read this tread with interest as I'm on a similar setup: i7 950, Sabertooth X58, Noctua NH-D14 but I've got 12G of Corsair Vengeance 1600 C9 and a Corsair HX850 PSU.
I think my 950 jumped out of the 930 bin as well. Up to about 3600 it is fine on about 1.225v, either 160x22 or 200x18 as I currently have it. But anything over that needs about 1.4 just to get into windows, and even at 1.45 it doesn't last more than half an hour of intel burn test. I don't want to push the volts much past that as even the NH-D14 is giving me temperatures in the 90s.
I bought that lot in the hope that 200x20@1.25V and 2000 ram would be realistically achievable, but 200x18 and 1600 ram is the best I can get at the moment. The ram seems to give up stick by stick if I tighten the timings or go above 1700. I either get 8G or even just 4G reported, but most of the time it won't post unless I go back to about 1600. So far I haven't gone past 1.65 on the ram, is it a good idea to go further?
I've tried the settings suggested previously, bit I get no post unless I take the ram back to 1600 and push the core volts to 1.45. It also needs about 1.45 QPI for a 200 fsb. Even then not stable under any load.
I've recently tried the 0802 BIOS which was meant to improve stability, but I've seen no change. The only thing new to me is a preset option for DDR3 2000 overclocking which puts the ram voltage to 2.00, not one I fancy trying!
I'm hoping there might have been a magic setting to tweak to improve stability, but nothing so far. I think I've lost out in the silicon lottery as Tom said.
Thanks,
Dave
I think my 950 jumped out of the 930 bin as well. Up to about 3600 it is fine on about 1.225v, either 160x22 or 200x18 as I currently have it. But anything over that needs about 1.4 just to get into windows, and even at 1.45 it doesn't last more than half an hour of intel burn test. I don't want to push the volts much past that as even the NH-D14 is giving me temperatures in the 90s.
I bought that lot in the hope that 200x20@1.25V and 2000 ram would be realistically achievable, but 200x18 and 1600 ram is the best I can get at the moment. The ram seems to give up stick by stick if I tighten the timings or go above 1700. I either get 8G or even just 4G reported, but most of the time it won't post unless I go back to about 1600. So far I haven't gone past 1.65 on the ram, is it a good idea to go further?
I've tried the settings suggested previously, bit I get no post unless I take the ram back to 1600 and push the core volts to 1.45. It also needs about 1.45 QPI for a 200 fsb. Even then not stable under any load.
I've recently tried the 0802 BIOS which was meant to improve stability, but I've seen no change. The only thing new to me is a preset option for DDR3 2000 overclocking which puts the ram voltage to 2.00, not one I fancy trying!
I'm hoping there might have been a magic setting to tweak to improve stability, but nothing so far. I think I've lost out in the silicon lottery as Tom said.
Thanks,
Dave
Well didn't work for me either.. My 950 posts in windows at 4.0 and 4.2 and 4.4 etc. but when I run anything it dies straight away. 3.8 is hardly good at 1.3 either. Noticed LLC ON helps keep the voltage stable when under load and doesnt let it die but temps are a bit high-ish on idle.
With a bit further tweaking (IOH to 1.24v, ICH to 1.20v and PLL to 1.88v), it seemed like a different cpu, and was posting at 3.8, 4.0 and 4.2, but still showing instability and high temps.
However, with these settings I've managed to lower QTT to 1.20v and keep 200x18 at 1.225v core, so I think I'll leave it at that for the moment. It is still a reasonable overclock and the 200 base clock should be a performance benefit. It also means it runs cool and quiet, and I've even been able to remove the front fan on the D14 (which was slightly raised due to the Vengeance ram anyway) and add lna's to the other fans, and still keep the temperature in the low 30s, with 60s under full load.
I keep seeing 'go for 200x20, you've just got to set it up right', but I don't know what else I can tweak to get this. It is just about possible on this system, but only with very high voltages and temperatures. I'll try checking for any damaged pins and reseating the cpu next time I have a chance.
Thanks,
Dave
However, with these settings I've managed to lower QTT to 1.20v and keep 200x18 at 1.225v core, so I think I'll leave it at that for the moment. It is still a reasonable overclock and the 200 base clock should be a performance benefit. It also means it runs cool and quiet, and I've even been able to remove the front fan on the D14 (which was slightly raised due to the Vengeance ram anyway) and add lna's to the other fans, and still keep the temperature in the low 30s, with 60s under full load.
I keep seeing 'go for 200x20, you've just got to set it up right', but I don't know what else I can tweak to get this. It is just about possible on this system, but only with very high voltages and temperatures. I'll try checking for any damaged pins and reseating the cpu next time I have a chance.
Thanks,
Dave
