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[Official] Gigabyte GA-990FXA-Series Owners Thread/Club - Page 382

post #3811 of 12377
I had a 980BE that ran 4.2GHz on air with a Zalman CNPS9900MAX all day. Cant recall the temps because it was almost a year ago but it was nice! I was using a CHFV motherboard.
post #3812 of 12377
Quote:
Originally Posted by stickg1 View Post

I had a 980BE that ran 4.2GHz on air with a Zalman CNPS9900MAX all day. Cant recall the temps because it was almost a year ago but it was nice! I was using a CHFV motherboard.

Such clocks speeds from a 95X on air cooling are rare. My UD3/955BE will pull 4.2 stable.. Needs a silver arrow with two SanAce 1011 (120x38mm 100CFM) to do it though. Both voltage and temps are still on the cusp of safe and unsafe. I need 1.55v core, 1.45CPU-NB and temps hang out at 55-61c on the cpu and 75-78 on the NB, in a cool room... Literally on the border of "safe" lol. It will do 4.0Ghz with much much better temps, voltage and much less cooling.
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post #3813 of 12377
Quote:
Originally Posted by ebduncan View Post

disable c1e in bios.
and try again. If it doesn't work, then make sure your memory are in the correct slots for dual channel mode.

C1e toggling did nothing. Memory is being read perfectly in dual channel mode at 1600 vs 1866. Thanks for the attempt smile.gif
post #3814 of 12377
Quote:
Originally Posted by vonss View Post

Are you using the XMP profile? that should modify settings for you to make it work without any issues.
On this MoBo is like this: 4/2/3/1 (right to left). Place the sticks accordingly.
The provided profiles also fail to boot with the memory at 1866.

On another forum it recommended that I set the timings manually. Has anyone else had this problem?

Im running 2X4 GB of GSKILL SNIPER 1866 Modules.
I would really like some help!!!!!
post #3815 of 12377
Quote:
The provided profiles also fail to boot with the memory at 1866.

On another forum it recommended that I set the timings manually. Has anyone else had this problem?

Im running 2X4 GB of GSKILL SNIPER 1866 Modules.
I would really like some help!!!!!

set timing manually

and make sure your stick are either in slots 4 and 3, or 1 and 2. remember they are numbered 4/2/3/1. Be sure to set memory voltage as welll.

Also note make sure your northbridge and hypertransport stay within range of 2200.
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post #3816 of 12377
Thanx for all the supportive feedback guys wink.gif my UD5 REV: 1.1 with Bios F9 arrived, and it seems to be semi stable at 4.25:1760cas9 which is around what I saw on the Asus 990X I recently tried so I'll keep tweaking a bit. with all 4 cores at 100% for a few hours, the CPU peaks at +40c over ambient on my air cooling. I don't think a bios update to F11 is warranted since this is such an old CPU.

219:19.5x is semi stable giving me about the same speed. Basically values that keep me closer to 4.2 are reliable, but once i push anywhere near 4.3 some applications may crash or i bluescreen. so i know how to get to 4.1 rock solid stable, so any suggestions how to achieve 4.2-4.3 more stable would be welcome.

a29fme.jpg

I'll post a screen shot soon after many hours of prime95+heaven+CPUID so any skeptics can see this CPU:RAM:Mobo combination seems to join well at 215 19x for a solid 4.13ghz 1720cas9 +40c max on air netting wei 7.5.

hardware configuration;
http://www.overclock.net/t/1023100/official-gigabyte-ga-990fxa-series-owners-thread-club/3800#post_18563569

thumb.gif
Edited by spypet - 11/10/12 at 9:06am
post #3817 of 12377
Quote:
Originally Posted by spypet View Post

Thanx for all the supportive feedback guys wink.gif my UD5 REV: 1.1 with Bios F9 arrived, and it seems to be semi stable at 4.25:1760cas9 which is around what I saw on the Asus 990X I recently tried so I'll keep tweaking a bit. with all 4 cores at 100% for a few hours, the CPU peaks at +40c over ambient on my air cooling. I don't think a bios update to F11 is warranted since this is such an old CPU.
219:19.5x is semi stable giving me about the same speed. Basically values that keep me closer to 4.2 are reliable, but once i push anywhere near 4.3 some applications may crash or i bluescreen. so i know how to get to 4.1 rock solid stable, so any suggestions how to achieve 4.2-4.3 more stable would be welcome.
a29fme.jpg
I'll post a screen shot soon after many hours of prime95+heaven+CPUID so any skeptics can see this CPU:RAM:Mobo combination seems to join well at 215 19x for a solid 4.13ghz 1720cas9 +40c max on air netting wei 7.5.
hardware configuration;
http://www.overclock.net/t/1023100/official-gigabyte-ga-990fxa-series-owners-thread-club/3800#post_18563569
thumb.gif


What is your CPU-NB at? On my 955BE I must have it at 2600+ or its unstable. what are ambient temps? if your +40c over ambiant you don't have much temp room.. These chips can handle 62c without damage however when overclocking stability is reduced after around 55-57c. Your almost out of "safe voltage" too. 1.55 get's kinda iffy on air but is still considered "safe".

How I got my 955BE to run smoothly (still a few minor quirks) is by running prime95 through all the FFT's on my 4.0Ghz overclock. The first time I went to 4.0 it wasn't actually stable so using those settings as a basis to hit higher never worked. 4.0Ghz is hard to hit on air with these phenom's. Over that is total golden chip territory.

Looks good though, keep at it!
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post #3818 of 12377
I think the NB is running at 2200 so it's useful to know increasing that may aid stability during higher OC attempts - at the moment i want to spend today making certain 4.13 holds without any grief so i can use these settings as a solid base for which to push any higher. Here is 4 hours into a real World test - prime95 heaven utorrent all working while i watched last night's fringe episode and post to this forum. i know 24hrs of prime95 with workers on all cores is the burning stability gold standard, but i prefer testing for real use suitability for shorter durations so I can still use the computer i'm tormenting biggrin.gif as per your advice i added a case fan to exhaust hot recirculating air which bought me -4c (side-in, back-out)and may add a third fan (front-in) later so I can stay well under +35c (25c apt) ambient, which as you say should keep my OC on air more stable and preserve my CPU health.
note: my new GPU is not in yet, so I'm using a 10% OC 9500GT as I'm waiting to see how the upcoming 7890 will lower 7870 pricing going into Thanksgiving weekend, so maybe i can afford a 7870 instead of my originally budgeted 7850 - don't worry my PSU can handle it - i already checked everything out with a KillOWatt and this current stage of build maxes out at 190w.

6em6me.jpg
rolleyes.gif
Edited by spypet - 11/10/12 at 10:11am
post #3819 of 12377
Quote:
Originally Posted by spypet View Post

I think the NB is running at 2200 so it's useful to know increasing that may aid stability during higher OC attempts - at the moment i want to spend today making certain 4.13 holds without any grief so i can use these settings as a solid base for which to push any higher. Here is 4 hours into a real World test - prime95 heaven utorrent all working while i watched last night's fringe episode and post to this forum. i know 24hrs of prime95 with workers on all cores is the burning stability gold standard, but i prefer testing for real use suitability for shorter durations so I can still use the computer i'm tormenting biggrin.gif as per your advice i added a case fan to exhaust hot recirculating air which bought me -4c (side-in, back-out)and may add a third fan (front-in) later so I can stay well under +35c (25c apt) ambient, which as you say should keep my OC on air more stable and preserve my CPU health.
note: my new GPU is not in yet, so I'm using a 10% OC 9500GT as I'm waiting to see how the upcoming 7890 will lower 7870 pricing going into Thanksgiving weekend, so maybe i can afford a 7870 instead of my originally budgeted 7850 - don't worry my PSU can handle it - i already checked everything out with a KillOWatt and this current stage of build maxes out at 190w. Warning: Spoiler! (Click to show)
6em6me.jpg
rolleyes.gif

Yea, not only will upping the CPU-NB help with some stability but can also assist in performance across the board. This can also act as a band-aid for the weak IMC. Allowing for a little more breathing room on RAM overclocking. having a higher CPU-NB can also lessen the CPU bottle neck on high end set up's smile.gif I run mine at 2800, Over and performance start's to drop back down, but some system's gain great improvements all the way to 3000Mhz. Its a coin toss, 2600-2800 is the common range though.

Also a little bit of warning when overclocking the CPU-NB, The max safe voltage is around 1.45v-1.50v. Some say it can match your CPU Vcore but I wouldn't. Also watch temps as you add voltage the the CPU-NB, it will raise the CPU temps considerably. However having a higher CPU-NB voltage and freq might allow you to use less CPU Vcore smile.gif

The AMD 7XXX cards OC like bests from what I have seen and heard, Good luck!
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post #3820 of 12377
Quote:
note: my new GPU is not in yet, so I'm using a 10% OC 9500GT as I'm waiting to see how the upcoming 7890 will lower 7870 pricing going into Thanksgiving weekend, so maybe i can afford a 7870 instead of my originally budgeted 7850 - don't worry my PSU can handle it - i already checked everything out with a KillOWatt and this current stage of build maxes out at 190w.


I don't think the 7890 will lower the prices of the 7870's to much. maybe 20-30$ the 7850 is a good mid range card. About on par with the 6970 with the new 12.11 drivers.
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