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 AMDŽ Socket-AM2 Overclocking thread (V2), discuss our setup/overclocking issues

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mfa333
post Jun 9 2007, 06:48 AM

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My 1st Brisby result:

user posted image


3600+ X2 Brisbane G1 | mfa333 | BIOSTAR Tforce 570 SLi | Kingston DDR2-667 | AMD stock cooler | 2853Mhz

I think thats all for now. Waiting for my paycheck to buy better cooler before proceeding to 3ghz... sweat.gif
mfa333
post Jun 9 2007, 11:31 AM

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QUOTE(Asus @ Jun 9 2007, 11:09 AM)
is brisbane available at lyp or must buy through bulk? whats the id on the box? AXD something2....
*
i got mine at lowyat. make sure the model number is DD not CU like 8tvt mentioned. and 640KB+640KB cache written on the box.
mfa333
post Jun 9 2007, 12:01 PM

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usually when u guys OC, do u pump chipset and HTT voltage as well? hmm.gif
mfa333
post Jun 9 2007, 12:34 PM

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QUOTE(kalakatu @ Jun 9 2007, 12:29 PM)
i dun think that is necessary  smile.gif
reason - i dunno.. tongue.gif
becoz normally i inly played with vcore and vdimm  smile.gif
*
this morning i tried to go over 300 but failed. with mem divider set to 400/533, BSOD while loading XP. If on mem divider 667/800, pc wont boot(ram prob). What else should i tweak? vcore already 1.45v.. sweat.gif
mfa333
post Jun 9 2007, 12:37 PM

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QUOTE(kalakatu @ Jun 9 2007, 12:36 PM)
try to pump more vcore..
and since u still using stock cooler, better keep it under 1.5v..
and set the divider to the lowest (533 or 400) and loose the timing (CL5 perhaps?)
*
more vcore? shocking.gif shocking.gif

divider already lowest(400) but still same. timing 5-5-5-15-20-2t also no go...
mfa333
post Jun 9 2007, 03:43 PM

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QUOTE(-pWs- @ Jun 9 2007, 02:51 PM)
For Brisbane 3600, it is consider high voltage at vcore 1.45. Normally with 1.4vcore, u can oc around 2.9GHz already smile.gif


Added on June 9, 2007, 2:56 pm

Try to use other multiplier smile.gif
-pWs-
*
ahh, i forgot i still haven't play with multiplier... thanks for reminding me... notworthy.gif

btw, HT link around 1000-1100 still acceptable right? hmm.gif

This post has been edited by mfa333: Jun 9 2007, 03:45 PM
mfa333
post Jun 10 2007, 10:05 AM

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QUOTE(ronaldjoe @ Jun 10 2007, 09:00 AM)
I keep my HT below 1000.
Setting HT multiplier @ 4x wont effect performance much.
*
of course not 4x... even on 3x if the HT is >340, its already over 1000... sad.gif
mfa333
post Jun 11 2007, 08:50 PM

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something bothers me about Everest and cpuz reading...

cpu-z:
FSB:DRAM = CPU/7
DRAM = 407

Everest:
FSB:DRAM = CPU/8
DRAM = 357


which 1 is correct? rclxub.gif I'm using DDR-533 divider on BIOS.

This post has been edited by mfa333: Jun 11 2007, 08:51 PM
mfa333
post Jun 12 2007, 09:56 AM

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QUOTE(lohwenli @ Jun 12 2007, 07:06 AM)
Refer to the table on the 1st post. That's your answer-ram divider is selected by the CPU based on the CPU multiplier and DDR2 setting in CMOS.
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there's no 9.5 multiplier table there.

QUOTE(8tvt @ Jun 12 2007, 09:24 AM)
i believe mfa333 tried...

300fsb x 9.5cpuMul = 2850

9.5 normally refer to 9cpuMul.. so 533divider should 7
me also face the same prob... but... the high transfer rate reading won't bother me much..
it's should 7 not 8...

other thing still i can't solve while doing 316fsb ~3ghz, which i ran it now..
cannot using 667divider... i manage to use below 270fsb only when using 667divider..

3000 / 6 = 500..

my ram can even run 520 if using 800 divider...
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having problem with low divider on high fsb? iinm, i read somewhere that you need to tweak the trfc if having problem with low divider on high fsb on Biostar mobo. not very sure though... hmm.gif
mfa333
post Jun 12 2007, 09:32 PM

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QUOTE(8tvt @ Jun 12 2007, 11:42 AM)
most of the time i tweak basic timing.. sub option i'll leave it auto..can save much time..
since tighter timing make more transfer rates.. so it won't interest me much to try higher with loose timing..
brisbane 3600+ cpuMul is 9.5.. we cannot increase it, only can change downward..
800Mhz ram won't cheap.. it's RM100 more than 667 DDR2 for 1gb..
if 2 for dual channel will cost RM200 more..

i know kingmax is cheaper... only recently.. but other brand price not drop yet..
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iinm, trfc is not timing, more to drive strength. Some Tforce 550 user on other forum verified that with loosen the trfc, you can set low divider(400/533) on high HTT. increasing the cpu speed while limiting ram speed(so that u can tighten the timing).

i might be wrong.. sweat.gif

QUOTE(lohwenli @ Jun 12 2007, 07:18 PM)
Didn't notice until you mentioned. But anyway, here's the formula to calculate

Ram speed = multiplier * 200 / lowest number that does not overclock ram * 2

The memory controller will only accept the following speeds DDR400, DDR533, DDR667 and DDR800. The lowest divider (meaning highest ram speed) is 5.

Therefore if you set DDR800,
9.5 * 200 / 5 * 2= DDR760 -ram can't be set any higher because no higher divider than 5. Ram is not overclocked, so this will be used

For DDR667
9.5 * 200 / 5 * 2= DDR760 -CPU thinks ram is overclocked, so it will used a lower multiplier
9.5 * 200 / 6 * 2= DDR633 -CPU thinks ram is not overclocked, so this will be used

For DDR533
9.5 * 200 / 7 * 2= DDR543 -CPU thinks ram is overclocked, so it will used a lower multiplier
9.5 * 200 / 8 * 2= DDR475 -CPU thinks ram is not overclocked, so this will be used

The memory controller will choose the divider based the ram speed setting and CPU multiplier with the aim of having a ram speed as close as possible to the ram speed setting while not overclocking the ram while assuming base clock is 200. The base clock does not affect the choice of ram divider, which is why overclocking ram is possible even for DDR800 which does not have a higher speed setting to use.
*
rclxub.gif rclxub.gif

that means, my actual divider on DDR533 setting is /8 ? ohmy.gif
mfa333
post Jun 12 2007, 10:12 PM

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QUOTE(lohwenli @ Jun 12 2007, 09:51 PM)


Added on June 12, 2007, 9:53 pm

Most likely, because on /7 it will be faster than 533 while on 200HTT, and the processor won't allow that.
*
that means cpuz reading is wrong? hmm.gif
mfa333
post Jun 13 2007, 09:54 PM

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QUOTE(smokey @ Jun 13 2007, 09:23 PM)
flashed to 507 liao...
now managed to boot at 260mhz @ stock voltage @ without CnQ @ virtualization enabled (wats tat?)...but havent prime yet...
but i dunno y cant even boot at 270mhz @ 1.4v @ ddr400 @ without CnQ @ virtualization enabled (wats tat?)...
y ar?
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of course not enough voltage. u cant hit 3ghz with stock voltage.. doh.gif try increase abit your vcore.
mfa333
post Jun 13 2007, 10:36 PM

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QUOTE(smokey @ Jun 13 2007, 10:32 PM)
stock is 1.3v ma
i alrdy put 1.4v wor...
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oh, sorry misreading... what's your HT transfer rate? maybe need more vcore? tongue.gif
mfa333
post Jun 18 2007, 01:52 AM

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QUOTE(-pWs- @ Jun 17 2007, 11:17 PM)
@afosz
Dude, use 32M to test stability. Not 2M icon_rolleyes.gif
-pWs-
*
to smokey and seram too... tongue.gif
mfa333
post Jun 18 2007, 02:32 AM

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QUOTE(sanfa @ Jun 18 2007, 02:28 AM)
spoilt???u mean??


Added on June 18, 2007, 2:30 amwhat is dTS?????????????


Added on June 18, 2007, 2:30 amwhat is dTS?????????????
*
digital thermal sensor iinm.
mfa333
post Jun 20 2007, 01:24 AM

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QUOTE(8tvt @ Jun 19 2007, 12:18 PM)
why not try 316fsb.. loose all the trfc if cannot boot..
*
aik, i remember few days ago u said that touching advance ram timing (especially trfc) is just wasting your time? tongue.gif
mfa333
post Jul 13 2007, 09:13 PM

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i still phailed to get my brisbane hit 3ghz barrier.. doh.gif

edited: on Tforce 570SLi mobo...

This post has been edited by mfa333: Jul 13 2007, 09:13 PM
mfa333
post Jul 15 2007, 12:30 AM

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QUOTE(sempronic @ Jul 14 2007, 03:14 AM)
what speed that ur brisbane can hit?
*
2.9 only doh.gif
mfa333
post Jul 24 2007, 10:56 PM

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Guys, please give recommendation for good AM2 mobo below rm300 for Brisbane 3600+...

budget only rm300 bcoz its not mine, i got Biostar Tforce 570 SLI already.. tongue.gif
mfa333
post Jul 25 2007, 11:23 AM

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QUOTE(Hoodlums @ Jul 25 2007, 12:55 AM)
Apa mobo AM2 yang best bawah RM300?
*
same question as mine but no one answer it yet.. huhu.. sleep.gif

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