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post #2621 of 5036
Quote:
Originally Posted by kcuestag View Post
Holy ***** are you kidding?

You should only use 1.6v if you're under water.

Get that voltage down to 1.36v or so

You should be able to do 3.8Ghz @ 1.4v ... 1.6v you're going to burn that chip.
its on auto, not any adjustment made on vcore, SO if I set it down to 1.36 it wont go up to 1.6v by itself?
    
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post #2622 of 5036
bah, sry dobbelpost..
    
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post #2623 of 5036
Quote:
Originally Posted by Mreek View Post
its on auto, not any adjustment made on vcore, SO if I set it down to 1.36 it wont go up to 1.6v by itself?
Yes, never OC on auto voltages...

1.5v is max recommended by AMD, and that should get you up to 4Ghz.

For 3.6Ghz you should only use like 1.36v
    
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post #2624 of 5036
I need your help guys.

Anything above 3.8Ghz doesn't seem to be right.

Currently running it at:

14x 280 FSB -> 3919Mhz
HT Link: 2240Mhz
NB: 2520Mhz
NB Voltage: 1.160v
CPU-NB Vid: 1.2v

DRAM Frequency: 746Mhz
FSBRAM: 3:8
Clocks: 8-8-8-24-27-1T

My problem is, I start Linx with a Problem size of 11530 and Memory 1024Mb and click start, and it wont stress CPU for some reason... No matter how long I leave it running, it doesnt start stressing CPU.

I've tried 4Ghz and I have same crap, if I go back to 3.8Ghz it does work for some reason.

What could be the problem? :/

I tried Prime 95 and it stress but then it starts failing on cores.... What's going on?

Edit:

Went back to 3.8Ghz and it does same thing... Prime 95 fails on cores one at a time and Linx doesn't even start stressing the cpu, however Folding@Home does fine for more than 24 hours...

What's wrong with my pc?
Edited by kcuestag - 9/6/10 at 8:29am
    
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post #2625 of 5036
Thread Starter 
Your CPUNB voltage is really low, for 3.8GHz I have to run at 1.3v

It's not a good idea to fold with a Prime unstable CPU either, as it basically will give incorrect results back to Stanford that unfortunately will be useless to the scientists who are investigating protein folding (or worse will be absolutely wrong but will be used). You need 100% stability to fold proteins correctly, I mean, for ab initio simulations scientists avoid even using single precision floating point registers because they are considered to be inaccurate.

The reason you can fold endlessly is because there is nothing checked the data output from the folding. So, even though your results may be completely insane (absurd atom velocities etc), you won't be able to tell.

This is a problem with a lot of the F@H data, they shouldn't actually be allowing any data from OC'd PCs in my opinion
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post #2626 of 5036
Quote:
Originally Posted by Headless Fansprings View Post
I am afraid that your pricey, feature-laden and dated Nvidia 780a motherboard is the culprit that is limiting your overclock as you may read in this review:

http://www.neoseeker.com/Articles/Ha...ormula/15.html

Not only is it a poor HT reference overclocker (up to about 245 MHz), it also dissipates 20 percent more power than AMD 700 and 800 series boards.

The contemporary Athlon and Phenom chips that were released along with this motherboard were very poor overclockers and, therefore, most serious overclocking was done using the CPU multiplier. Nonetheless, with a bit of effort, you may be able to overclock your CPU to 3.5 GHz.

First of all, enable AI Tuning and disable AMD Virtualization. Also, make sure than the onboard IGP is disabled.

Your next task is to set the KB NB HT multiplier to 9X from Auto and DDR multiplier to 4.00x using the usual timings 5-5-5-15. Leave the CPU NB multiplier on Auto. I, personally, do not see that you will have to raise any of the voltages. However, if you do, raise the VDDNB voltage. Finally, raise the CPU frequency up to about 250 MHz. Nonetheless, I belive that you will have a hard time breaking the 3500 Mhz barrier on this particular board.

Your RAM, on the other hand, may reach 1200 MHz with a 0.1 to 0.2 V bump in voltage. Bear this in mind when setting your CPU and DDR2 multipliers. In particular, you may or may not wish to lower your CPU muliplier in order to optimize your RAM.
I only got two multipliers in my bios.. CPU Multiplier and CPU-NB Multiplier
    
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post #2627 of 5036
Thread Starter 
Quote:
Originally Posted by Mreek View Post
I only got two multipliers in my bios.. CPU Multiplier and CPU-NB Multiplier
Do you have an HT speed? Should be set at 2000MHz, you have to drop that to 1800MHz or 1600MHz
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post #2628 of 5036
Quote:
Originally Posted by test tube View Post
Do you have an HT speed? Should be set at 2000MHz, you have to drop that to 1800MHz or 1600MHz
yes I got that. settings to :
HT-speed:1800 mhz
CPU frequency; 243
CPU Multiplier : 14
CPU NB Multiplier : auto
DRAM CONFIG -> Timings-> 800mhz, 5-5-5-15
Vcore V : 1.3875V
VDDNB Voltage : +200mV
DDR2 V : 2.120V

am I missing something or something way off?
Picture of my bios below, thats about all the oc settings, further down its just DRAM REF . (old picture, stock)


Edited by Mreek - 9/6/10 at 9:11am
    
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post #2629 of 5036
Quote:
Originally Posted by test tube View Post
Your CPUNB voltage is really low, for 3.8GHz I have to run at 1.3v

It's not a good idea to fold with a Prime unstable CPU either, as it basically will give incorrect results back to Stanford that unfortunately will be useless to the scientists who are investigating protein folding (or worse will be absolutely wrong but will be used). You need 100% stability to fold proteins correctly, I mean, for ab initio simulations scientists avoid even using single precision floating point registers because they are considered to be inaccurate.

The reason you can fold endlessly is because there is nothing checked the data output from the folding. So, even though your results may be completely insane (absurd atom velocities etc), you won't be able to tell.

This is a problem with a lot of the F@H data, they shouldn't actually be allowing any data from OC'd PCs in my opinion
So you think my Prime 95 or Linx fail coz CPU NB is too low?

If so, what is safest CPU NB voltage? I want to go for 4Ghz


Thanks,
Kevin.

PS: Is it ok if I leave NB voltage like that? I mean its already enough for 2.4Ghz NB.
    
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post #2630 of 5036
So I upped it to 4Ghz the 1055T

14x 286 -> 4Ghz
HT Link: 2288Mhz
NB: 2574Mhz
NB Voltage: 1.160v
CPU-NB: 1.375v
CPU vcore: 1.47v

It is running Folding@Home stable but still won't even start Linx for some reason it doesn't even start stressing, why?

It was at 1.35v the CPU-NB.

I lowered the OC to 3.9Ghz, and upped the CPU-NB to 1.375v, but still won't start any Linx run, for some reason, it doesnt start stressing, why?
Edited by kcuestag - 9/6/10 at 10:44am
    
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