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how to overclock for the experinced

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Name: gadgeteer123
Date: October 18, 2008 at 02:49:52 Pacific
OS: win xp sp3
CPU/Ram: 3ghzphenomquad/2gig
Product: custom/asus crosshair for
Comment:

i have done many google searches, and i cannot find any even close to good how to overclock pages, i know how to overclock, i know fsb, multiplier, voltage, and memory timing, and some more, but all the how to's are made for people who don't know anything, i want a in depth detailed page on how to overlclock really good, and perfectly to the best fo your system??



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Response Number 1
Name: jam
Date: October 18, 2008 at 06:11:23 Pacific
Reply:

"i want a in depth detailed page on how to overlclock really good, and perfectly to the best fo your system??"

There is no such thing. Overclocking isn't an exact science, it's trial & error. No two systems will overclock exactly the same, even if they have the exact same hardware. And even if there was such an overclocking guide, there couldn't be a "one size fits all" guide because of the differences in CPU architecture, not to mention the differences in hardware configuration. At the very least, you'd need a several different guides.

AMD eliminated the FSB when it introduced the A64 so you'd need a guide for CPUs prior to the A64 & one for the A64 & beyond. And for Intel, you'd need a guide for CPUs prior to the P4, a guide specifically for the P4, & another guide for the C2D/C2Q. And Intel's next CPU release, the Core i7 (Nehalem) will be similar to AMD's design in that there will be no FSB, so there will have to be a separate overclocking guide for them as well.

If you have a specific question about how to overclock a certain configuration, ask it...someone will be able to point you in the right direction.

"If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction


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Response Number 2
Name: gadgeteer123
Date: October 18, 2008 at 06:42:32 Pacific
Reply:

wats a64?? and i want some site that will tell me wat everything is in detail, wats drive strength in memory or all thos like 30 options just in the memory section, and so on for everything else? i have a am2 board, best on asus makes


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Response Number 3
Name: jam
Date: October 18, 2008 at 07:55:00 Pacific
Reply:

"wats a64??"

Are you serious? A64 = Athlon 64.

AMD dropped the FSB over 5 yrs ago & replaced it with the HyperTransport (HT) bus starting with the socket 754 A64. It's sometimes called by it's old name, Lightning Data Transport (LDT). All A64's (single, dual, triple or quad cores) run at 200MHz frequency, but the HT bus speed varies depending on the HT version supported by the motherboard.

Anyhow, the overclocking methods for AMD CPUs is totally different than Intel CPUs. Basically since there's no FSB to deal with, all you have to do is strive to run the CPU as fast as possible while keeping the HT, RAM, PCI-e & PCI buses at their default speeds, or as close to default as possible.

"i have a am2 board, best on asus makes"

Actually, it's an AM2+ board. And hopefully you're running DDR2-1066 with your Phenom.

"i want some site that will tell me wat everything is in detail, wats drive strength in memory or all thos like 30 options just in the memory section, and so on for everything else?"

Start with your manual. AI Tuning should be set to Manual & you should be addressing each overclock setting separately. You probably don't need to address any of the memory settings other than frequency & the "normal" memory timings. SLi-Ready memory should always be disabled. If you want to get into the advanced memory settings, you'd better do your homework. Most likely, you're gonna have to do searches for each individual setting. For instance, "Clock Skew":

http://www.overclock.net/faqs/11926...

"If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction


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Response Number 4
Name: kx5m2g
Date: October 18, 2008 at 08:42:01 Pacific
Reply:

You should also go to the ASUS forums for your particular board. You might find some information from those who are experienced in overclocking that board. Probably less, though, than for an Intel based board since, as jam pointed out, you can't mess with the FSB.


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Response Number 5
Name: gadgeteer123
Date: October 18, 2008 at 13:17:35 Pacific
Reply:

well, thanks for your response, i do have 1066 memory, corsair dominator actually, and i underclocked it to 960 mhz but turned latency down to 4 and it boots a very noticable amount faster (yay), if you got anymore tips at tweaking feel free to tell


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Response Number 6
Name: Cody (by Cody Richter)
Date: October 18, 2008 at 14:51:36 Pacific
Reply:

oc some, run s tress test, if it passes clock some more...keep going till u crash it then back off a little. Make sure it can pass a stress test for 8 hours. It generally takes me 2 weeks to get the best clock out of a system and keep it stable.


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Response Number 7
Name: gadgeteer123
Date: October 18, 2008 at 22:41:34 Pacific
Reply:

well ive got it stable now at 910, i tried 940mhz at that latency and it froze after 5 minutes, but at 910 its been on all day.


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Response Number 8
Name: jam
Date: October 19, 2008 at 08:09:26 Pacific
Reply:

Why don't you post all your settings. Just telling us that you're underclocking the RAM is meaningless if you don't tell us what you're doing to the CPU & HT bus. In fact, why are you underclocking the RAM at all? What is the default voltage of your RAM? If it's higher than 1.8v (which I'm sure it is), you don't have true DDR2-1066, you have factory overclocked DDR2-800. That's why the dominator series has those enormous heatsinks. True DDR2-1066 runs at 1.8v.

"If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction


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Response Number 9
Name: gadgeteer123
Date: October 19, 2008 at 13:06:40 Pacific
Reply:

well they run at 2.1, now you got to make me feel bad, that i made a bad choice, when i bought them 2 monthes ago, i read reviews everywhere that they where like in the top 5 for best ram for overclocking, it can be overclocked at defalt timings to 2240mhz but when i move the latency from 5 to 4 it can only run at 910. my cpu is 2.5ghz and its overclocked to 3.42, and it never freezes, ive stress tested already, ht is at 2ghz, idn what default is, my pic-e is 105, and the rest is default, i like it underclocked anyway now, it runs faster, boots faster, and theres no lag even on big applications.


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Response Number 10
Name: jam
Date: October 19, 2008 at 18:14:23 Pacific
Reply:

It would have been nice if you'd have laid out your specs & settings right from that start, that way we wouldn't have to play "20 questions".

You never stated which X4 you have but since the default speed is 2.5GHz, it must be the 9850. And if you have it at 3.42GHz, you must have the CPU frequency jacked up to about 274MHz?

As for your RAM, DDR2-1066 runs at 533MHz (actual). Even if you're talking about the effective speed, there's no way it would run at 2240MHz (1120MHz actual). Was that 2240 number a typo?

You said your board is the "best on asus makes" but in your original post you list "asus crosshair". If it's the CrossHair 1, it's not the best...the CrossHair 2 is much better & that's the board I was looking at when I made my comments about BIOS settings in response #3. Anyhow, I don't know where you're coming up with your overclock settings, but if I'm correct about the CPU being clocked at 12.5 x 274MHz, you should have lowered the CPU<->NB HT speed to 4x, maybe even 3x. And the memory frequency should be set to DDR2-800. The result will be the the HT bus will run at 1096MHz actual (2192MHz effective) & the RAM would run at approx 530MHz actual (1060MHz effective). You *should* be able to run the RAM at CAS 4 at it's default speed, but you may have to throw some more voltage at it. You're losing performance by running it at 910MHz (445Mhz actual?)

I'm curious why you overclocked the PCI-e bus to 105MHz. Did you do that on your own or did you read somewhere that 105MHz is the way to go? If you read it somewhere & have a link explaining it, post it...I'd like to read it.

"If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction


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Response Number 11
Name: gadgeteer123
Date: October 19, 2008 at 22:21:07 Pacific
Reply:

it was a typo, 1240mhz, and i swear i stated in the info part that it was a crosshair formula II, and umm wow 274 fsb wow, its set at 230 right now for the memory to be 110 i have it set as ddr-800, but when i got 1240 it was set at 228 with it at 1066 mode, and when i had the ht set at auto, the board automatically set it to 2ghz anyway, and that 105 is the setting, not actual clock, i forgot actuall clock, but it was pretty hi, default for it is 100mhz.


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Response Number 12
Name: jam
Date: October 20, 2008 at 05:08:52 Pacific
Reply:

"i swear i stated in the info part that it was a crosshair formula II"

Have a look at your original post. You may have entered "crosshair formula II" but because since the number of characters on that line is limited, all it says is "asus crosshair for"

"umm wow 274 fsb wow"

We went over this already - AMD systems have no FSB! You're gonna have to stop thinking in those terms. And if the CPU frequency isn't set to 274MHz, how are you able to run your CPU at 3.42GHz? The multiplier is locked from going higher than 12.5x on the 9850 unless you have the Black Edition & if that's what you have, there's another fact that you neglected to mention.

"when i had the ht set at auto, the board automatically set it to 2ghz anyway"

Are you sure about that? Most likely, the HT bus overclocks along with the CPU. What would be the point of having the HT multiplier adjustment if the "AUTO" setting locked the HT at it's default speed of 1000MHz (2000MHz effective)? If you have the HT bus set to AUTO with the CPU frequency at 230MHz, the HT is *probably* running at 1150MHz (2300MHz effective).

Sorry, but the more info you provide, the less I think you know about how to properly overclock an AMD system. Do you run CPUZ to confirm what your settings are?

"If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction


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Response Number 13
Name: jam
Date: October 20, 2008 at 06:08:56 Pacific
Reply:

BTW, if you do have the Black Edition, the only setting you'd really have to change is the CPU multiplier. Since there's no FSB, there's absolutely no performance difference between, for example, 3.0GHz (15 x 200MHz) & 3.0GHz (12.5 x 240MHz). But once you start raising the CPU frequency above 200MHz, you have to concern yourself with all the other settings that are affected...namely, HT bus, RAM, PCI-express, etc.

The HT bus should run as close to 1000Mhz (2000MHz effective) as possible...better to be lower than too high. The RAM should run as close to 533MHz (1066MHz effective) as possible...higher is fine if you can pull it off. And the PCI-express should be locked at 100MHz. Also, Spread Spectrum settings & Cool'n'Quiet should ALWAYS be disabled.

"If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction


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Response Number 14
Name: gadgeteer123
Date: October 20, 2008 at 10:02:49 Pacific
Reply:

yes it the black edition, i knew about all that before i posted this, its called old habits, i'm autistic, it say alot of things a little bit off. i used to call cool whip lotion, so stop making me feel bad. and i adjusted the multiplier, its at 15x and the cpu frequency is 228 i think, and whats wrong with turning up the pci-e it actually made a difference in games.


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Response Number 15
Name: jam
Date: October 20, 2008 at 10:37:31 Pacific
Reply:

As I've tried to explain, AMD systems have no FSB. Since the memory controller is integrated into the CPU, the CPU & memory controller communicate at full processor speed. The faster the CPU runs, the faster the communication between the two. Using 3.0GHz as an example, there is absolutely no difference between 15 x 200, 12 x 250, or 10 x 300...they ALL run the CPU at 3.0GHz, so the comunication speed between the CPU & memory controller is exactly the same.

Since you have the Black Edition with an unlocked multiplier, there's really no point in increasing the CPU frequency to 228MHz. By raising it to 228MHz, you've throw off all the other settings. You may think you're doing a good thing, but by underclocking your RAM to 910MHz, you're losing performance.

You already know your CPU is capable of running at 3.4GHz, so all you really need to do is change the settings back to their defaults & simply increase the CPU multiplier to 17x. That way, the CPU will run at 3.4GHz (17 x 200MHz), the RAM will run at 1066MHz, the HT bus will run at 2000MHz & the PCI-e bus will run at 100MHz.

"whats wrong with turning up the pci-e it actually made a difference in games"

The PCI-e is made to run at 100MHz & should be locked at that speed. If you want better graphics performance, overclock the video card, not the PCI-e slot.

"If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction


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Response Number 16
Name: gadgeteer123
Date: October 20, 2008 at 13:49:49 Pacific
Reply:

ok, ive got everything as default except cpu and ram, it runs a bit slower now but owell then.


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Response Number 17
Name: jam
Date: October 20, 2008 at 15:16:18 Pacific
Reply:

"ok, ive got everything as default except cpu and ram, it runs a bit slower now but owell then"

No, you're not understanding me! I thought you said you knew how to overclock???

Set the CPU to 17 x 200MHz, the RAM to DDR2-1066, the CPU<->NB HT speed to AUTO, & the PCI-e to 100MHz!

However, I have to take issue with your overclocking claims. I did some googling & found that most of the hardware testing sites state that 3.1GHz is about the overclock limit for the 9850 & getting to that speed required increasing the CPU voltage. You never mentioned anything about voltage. How is it that people that test hardware for a living can't get the 9850 to run faster than 3.1GHz yet you can get your's to run at 3.42GHz without even touching the voltage setting?

http://www.fudzilla.com/index.php?I...

http://labs.pcw.co.uk/2008/03/pheno...

http://www.legitreviews.com/article...

http://forums.extremeoverclocking.c...

http://www.techwarelabs.com/reviews...

http://www.techwarelabs.com/reviews...

"If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction


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