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another 1090t overclocking help =P - Page 4

post #31 of 39
Thread Starter 
so far its running for the past 5 mins fine using prime95 but the temps are pushing 50c =/ i don't like that so trying to down the volts and see what happens. i might have to upgrade my two top 140mm exhaust fans from stock to noctua 140mm fans and add a 120mm GT-14 inside my drive bay since i only have a dvd reader and all this leftover space lol.
post #32 of 39
What is your NorthBridge voltage and speed?Also try 8-8-8-24 T1 on your RAM.
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post #33 of 39
Thread Starter 
nb speed is at 2000mhz 1.187v. I ran a 15min test of occt and prime 95 with 200 x20muiltply at 1.5v i want to lower the volts as much as i can. the temps are hitting 48-50c on load which isn't what i like to see. ill ask sandman and see what he says.
post #34 of 39
Those temps are quite acceptable, especially at load.

Why wait for the sandman to give you approval ?

Do a bit of research, see what others are getting temp to voltage ratio. You will find it that much more rewarding if you do the hard yards instead of someone holding your hand and seeking approval.
This whole game of overclocking is based around trial and error and if you don't make mistakes then you learn nothing.

The amount of people I have seen come on here asking for "packet cake mix" overclocking is "Phenom"enal, then low and behold they come back wondering what went wrong when the overclock doesn't stick for long. The biggest issue is that people spit out "their" settings and act as though it's gold (which it is, for them but may not be solid for others).
The problem is that when people do that and follow, they are mucking around with several different Clocks and Voltages. Once it goes belly up you have so many factors to consider, it near makes the diagnosis imposable (well not imposable, but very hard for a new comer).

But that being said, I hope I didn't offend but just play about with settings and get to know your hardware. .....Have fun with it.

Speaking of cake mix, here is my formula.

1) Start of with what has the most impact on the CPU clocks, in your case the CPU mutli and the voltage also temps play a huge role here to (which you are already familiar with) . Once it's as solid as a rock at the speed you want then move to step 2.

2) Your RAM, bring them up to stock settings and test, if stable then slowly increase the clocks or drop the timings, test till satisfied with stability. The things here are the ram divider, DRAM voltage and timing settings.
In some cases you may need to inject more voltage to the IMC (CPU/NB) to make the ram stable.

3) once those two land you 8 hrs of prime stable on "Blend" then the NB comes into play, this one only has the two settings (CPU/NB Frequency and CPU/NB voltage). This will increase the CPU temp by a few degrees, but you have to find the equilibrium between the CPU speed, CPUv, CPU/NBv, CPU/NB Speed and CPU temp.
Edited by smash_mouth01 - 5/14/11 at 7:59pm
post #35 of 39
Here is a refresher for you (OP) and other people reading this thread:

Start overclocking on your stock voltage. Clock it until you can't go any higher without bumping the voltage. When you begin overclocking, you want to start with your CPU core speed and nothing else - ie; leave your CPU/NB and HT Link at or below 2000Mhz, and keeping your RAM down clocked to either stock speeds or equal to/less than 1333Mhz (666/667Mhz). You should overclock in nominal increments to discern stability, using either 5Mhz bumps, 10Mhz bumps, or slightly larger should you feel the need and/or are impatient.

If you don't want to spend the time doing it properly, of course you can jump on ahead and set a processor from 3.2Ghz directly to 4Ghz and start stability testing. However, likely, you will not find stability.

Once you find your highest stable clock with whatever voltage works for your chip up to 1.5v (from the 9xx to the 11xx series) or 1.55v (with proper cooling), then you can work on overclocking other parts of the system.

From here you can then work on your CPU/NB. To do this you should clock your RAM to AMD officially supported standard of 1333Mhz or lower (depends on what your RAM is rated for). You try to overclock the CPU/NB the same way you did with your CPU - you up the multiplier (which may report as a frequency instead of a multiplying number) with stock voltage until you find instability. Then you increase the voltage. You do this until you reach the highest stable clock speed on your CPU/NB without going over 1.5v (and provided you have proper cooling). The more speed and voltage you put on your CPU/NB the more heat your CPU will give off - remember that.

Next up you can overclock your RAM. You can do this two ways - through timings or through frequency. When you lower the timings of your RAM, say from a CAS latency of 9 to 7, you are essentially telling the RAM module to wait two cycles less for a refresh of information fed it from the CPU. You can also tighten the following timings which are related to the RAM chips themselves (this can get very technical if you get into sub-timings as well). This is why things load quicker, feel 'snappier' and benchmarks can improve when you do this (referred to as 'tightening timings'). You can also increase the frequency. If your RAM is rated for 1600, perhaps you can increase the frequency of the modules to 1700, 1800 or more. This will give you more performance in bandwidth, allowing for more data to be processed in the same amount of time as lesser clocked modules. You can increase your DRAM voltage but you should be careful, some RAM chips do not like loads of voltage and you have a large gamut of selection out there from 1.3v RAM to 1.9v+ RAM in the DDR3 range. If you have DDR2 then it will likely exceed 1.9v most of the time, dropping usually between 2~2.5v

Stability testing should be done separately. To use Prime 95 use this guide as a reference to isolate particular components for testing: Prime95: A Quick & Dirty Guide (thanks to tmunn).

    
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post #36 of 39
Thread Starter 
Thanks guys. Sandman has been helping me as i go thru skype. Its a lot easier having someone there help you if you need or have questions. I'm currently at 250 x16 1.476v on 3 hrs prime95 no errors. Cpu-Nb is stock and on 1.35v. overvolted .060+ on the nb and 0.30+ on the memory. im going to do a full 12hr burn tonight and see what i get i hope its stable =) btw this motherboard is soo confusing even sandman is having issues helping me. its like biostar is trying to hide everything from you.
post #37 of 39
Thread Starter 
check it out =) thanks to sandman. Doing a 12hr overnight burn on prime 95

after than ill work on the nb and ram =) when im fully at where i want and stabily i see a lot of rep for some ppl on here =) sandman too! he taught me a lot and im still reading the link he posted to make sure i fully understand it all.
off to bed for now as i cant use my pc lol hate that. i wanna play some games on my new rig! =D


post #38 of 39
Thread Starter 
well goodmorning! =D so its been 12hrs and its still all stable running 100% core usage and core temps are at 38 average which is awesome. looks like 1.457v was the sweet spot for me. wish it was a lil bit lower but hey ill take it. every board and chip is different so i guess thats my sweet spots. time to go for northbridge overclock now after i shower. wish me luck
post #39 of 39
Quote:
Originally Posted by Celcoid View Post
G.SKILL is not good for OC'ing.....this may be your problem
Say that to the G.Skill DDR2 I have in my spare rig, DDR2-800 CL5-5-5-15 stock.

On 1.9v, I can get 4-4-4-10-1T. (Massive improvement IMO)

Quote:
Originally Posted by PROBN4LYFE View Post
Not so much of this...12hrs of CPU burning...not my idea of keeping a system...ummm performing.
What? If your CPU is running at voltages, etc that 12 hours of a CPU at full load will damage it, you're probably only concerned about the Mhz and how much LN2 you have left...12 hours of P95 will take off a month from say, 30 years of OCed life...And even a $50 budget chip at stock from even 10 years in the future will destroy a OCed top of the line CPU now.

What I tend to for AMD OCing is get the highest voltage you can safely go, do a short (30min) stress test to get what the temperature is like if you're not sure it'll stay below a safe point, then slowly raise the CPU clock speed either via multi or ref clock while keeping everything else stock until you hit instability in 4 hours of IBT, rinse and repeat for CPU/NB and RAM, then I get each setting to the highest they can go, once I do that, I compile a Linux kernel (Just a standard Arch one) to make sure its stable, because that usually shows instability quite fast, not recommendeding that to everyone though unless they already use Linux.
    
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