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Athlon II Overclocking Guide (beginner friendly) - Page 12

post #111 of 356
And have the ht at 2144Mhz? How high can you put ht speed before getting performance hit and/or instability?

If possible, what about running the cpu nb at 268 x 10 = 2680? is that to high for cpu @ 3.75Ghz? I read somewhere that to high cpu nb vs cpu speed would give less improvment than a slightly lower cpu nb. You know anyting about that? Im quite a noob at this,hehe

cheers.gif
post #112 of 356
Thread Starter 
Quote:
Originally Posted by ruarcs30 View Post

And have the ht at 2144Mhz? How high can you put ht speed before getting performance hit and/or instability?
If possible, what about running the cpu nb at 268 x 10 = 2680? is that to high for cpu @ 3.75Ghz? I read somewhere that to high cpu nb vs cpu speed would give less improvment than a slightly lower cpu nb. You know anyting about that? Im quite a noob at this,hehe
cheers.gif

less improvement doesn't mean less performance smile.gif
It just means that for example from 2000 to 2300 you'll get 15% better performance, from 2300 to 2600 you'll get 10% better, and from 2600 to 2900 - 5% or less.
*example values*

As of the HT - from the benches I've seen it starts to lose performance around 2200. But even if it begins to lose performance instantly past 2000, 200 over would still be faster than 200 under.
For example, at 1800 you lose 10% performance, at 2200 you lose 4%. You'd still lose, but lose less smile.gif
Also, this is just a theoretical situation in case that performance drop starts from 2000Mhz onwards. I believe the treshold is a bit higher, around 2200-2300 (at least noticable performance drop).

Stability effect is instant.

Actually it's been long since I last read on the HT freq dilemma of AthII / PhII CPUs, I need a refreshment course smile.gif
Edited by ronnin426850 - 4/17/12 at 12:49am
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post #113 of 356
Quote:
Originally Posted by ruarcs30 View Post

Looking good:-) How are your temprature peak when stresstesting?
OC the cpu nb actually gives quite noticable results. I would try to set the cpu nb multi at 10 and set the cpu nb voltage to 1.25 and see if its stable. If it is not then set the voltage to 1.3. But watch your temps, you could get 10 degrees celcius more when raising cpu nb and voltage on it.
If you dont get tit stable on 2500MH you might want to try a higher ref.clock and lower cpu multi.
268 x 14 = 3.75GHz
cpu nb x 9 = 2.4GHz
Ht-link x 7 = 1874 MHz
Try this if you dont get it stable whit ref.clock on 250. The cpu nb should teoretical handle as mutch voltage as the chip it self, but my understanding is that you doesnt need more than 1.25-1.35 to get a high cpu nb stable.
Quote:
Originally Posted by ronnin426850 View Post

+1, except I'd bump that HT multi to 8x smile.gif

This is very helpful information. I was just thinking what to try if my system destabilizes after tweaking the CPU-NB. I will definitely try this if that is the case.
My CPU temp peaked at 52C using LinX for 10 runs and the cores never got over 46C and system temp stayed constant at 36C.
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post #114 of 356
All looks good. You want to try and keep those temps below 55C though. Thats what Ive heard. What CPU cooler you running?
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post #115 of 356
Got everything up this morning. I have the CPUNB to 2500 at 1.25v and the memory at 1332 8-8-8-22-30.
Quote:
Originally Posted by Alastair View Post

All looks good. You want to try and keep those temps below 55C though. Thats what Ive heard. What CPU cooler you running?

I have not seen it go over 52C with the 10 runs on LinX and once I upped the CPUNB it never went over 51C. I ran a 4 hour stress test with AMD Overdrive and the the temps never went above 44C. As for cooling, I have a no-brand (I have no clue) radiator style liquid cooler, not unlike this http://www.newegg.com/Product/Product.aspx?Item=N82E16835181016 with a 120mm fan bringing air in (It was a free upgrade from iBuyPower)

Feeling pretty confident with this clock biggrin.gif
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post #116 of 356
I find this thread very useful since I just recently started to OC my AMD Athlon X3 440. This is by far the easiest thread to understand. I'll be pretty much active on this thread starting now thumb.gif

I started with the basic OC with FSB: 220 MHZ and had success with Lin X when it comes to stability. As I started to increase the FSB by 10 (230 MHz) that's when the real OC came in. I haven't had any success in Lin X as I got constant BSOD's on the first loop. I don't have the Black Edition so I know that I won't be messing much with the FSB multiplier. I went ahead and decreased the NB (x9) and increased the from stock (1.392) voltage by .5 and with no success at all.

Now, I'm pretty much lost with trying to get the OC frequency that I want.

I haven't got to the part wherein I have to increase or decrease the DRAM multiplier as I seem to have no option of doing that with the board I have an ASUS M4A88T-M. What I have are these options: DRAM Frequency : [Auto] [800 Mhz] [1067 MHz] [1333 Mhz] [1600 Mhz] and only the option to set the DRAM Timing Module Manually. I'm not well versed with messing with the timings and I know I will have to deal with it in a later time.

I'm thinking the culprit is the RAM settings which is causing the BSOD's. By the way, I have a corsair XMS3 9-9-9-24, 1.5V I think is the timing.

Guys please shed some light, I'm not sure where to go next. One last thing on my board if also have these settings: HT Link Frequency options: [200 Mhz] [400 Mhz] [600 MHz] ~ [2000 MHz] [Auto] Do i have to set anything on the HT Link Frequency?
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post #117 of 356
Whats the rated speed of yor RAM in Mhz? It is most likely your ram cuasing your instability so you might want to drop the memory multiplier by one level. If that doesnt work you might want to try and bump up your processor voltage a bit. It seems that Athlon 2's dont like to be pushed too far without a little extra juice to feed them! Hope this helps a bit!
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post #118 of 356
Quote:
Originally Posted by Alastair View Post

Whats the rated speed of yor RAM in Mhz? It is most likely your ram cuasing your instability so you might want to drop the memory multiplier by one level. If that doesnt work you might want to try and bump up your processor voltage a bit. It seems that Athlon 2's dont like to be pushed too far without a little extra juice to feed them! Hope this helps a bit!

I have mine back in stock settings as I wanted to start from scratch.

Memory Frequency 669.7 MHz (3:10)

My board doesn't seem to have an option to drop the memory multiplier. Do i have to use a third party software to change it? Can't seem to find that option in my BIOS settings. I only have these: DRAM Frequency : [Auto] [800 Mhz] [1067 MHz] [1333 Mhz] [1600 Mhz] and a manual Dram timing option.
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post #119 of 356
Thread Starter 
Quote:
Originally Posted by CarreoJ View Post

I have mine back in stock settings as I wanted to start from scratch.
Memory Frequency 669.7 MHz (3:10)
My board doesn't seem to have an option to drop the memory multiplier. Do i have to use a third party software to change it? Can't seem to find that option in my BIOS settings. I only have these: DRAM Frequency : [Auto] [800 Mhz] [1067 MHz] [1333 Mhz] [1600 Mhz] and a manual Dram timing option.

Those are your ram multipliers, my friend, only they are quite strangely listed.
800 Mhz = DDR 4x
1066 Mhz = DDR 5.33x
1333 Mhz = DDR 6.66x
1600 Mhz = DDR 8x

So if you have your ref. clock at 220 and [1600 Mhz] selected, that would give you 1760 Mhz actual DDR freq (reported as 880 by CPUz).
In case the setting is [1333 Mhz] that gives you 1465 Mhz (reported as 732)

In case your stock freq is 1333 (which seems to be the case), you would need to temporarly set your BIOS to [1067 Mhz] in order to test your CPU overclock without BSOD smile.gif
With ref. clock of 220 that would be 1172 Mhz (reported as 586) which should give you some headroom to play with the CPU smile.gif
Edited by ronnin426850 - 4/18/12 at 11:17am
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post #120 of 356
Quote:
Originally Posted by ronnin426850 View Post

Those are your ram multipliers, my friend, only they are quite strangely listed.
800 Mhz = DDR 4x
1066 Mhz = DDR 5.33x
1333 Mhz = DDR 6.66x
1600 Mhz = DDR 8x
So if you have your ref. clock at 220 and [1600 Mhz] selected, that would give you 1760 Mhz actual DDR freq (reported as 880 by CPUz).
In case the setting is [1333 Mhz] that gives you 1465 Mhz (reported as 732)
In case your stock freq is 1333 (which seems to be the case), you would need to temporarly set your BIOS to [1067 Mhz] in order to test your CPU overclock without BSOD smile.gif
With ref. clock of 220 that would be 1172 Mhz (reported as 586) which should give you some headroom to play with the CPU smile.gif

Great! That explains it!thumb.gif I'll take note of this! smile.gif I don't have a fancy board so mine's differently mapped. So going back to my concern, do you think I should drop the multiplier to 1066 Mhz?

I'm trying to achieve an OC with FSB: 230 and I had the CPU-NB to x9. I'm ngetting BSOD's when launching LinX with that setting. Though I tried to raise the core voltage bit by bit still getting constant BSOD's.

May be I should lower the Ram multiplier first. I'm sorry guys first time exploring OC...redface.gif
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Overclock.net › Forums › AMD › AMD CPUs › Athlon II Overclocking Guide (beginner friendly)