
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...
AMDŽ Socket-AM2 Overclocking thread (V2), discuss our setup/overclocking issues
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Jun 9 2007, 06:48 AM
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#1
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2,588 posts Joined: Jan 2003 From: KL-Skudai |
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Jun 9 2007, 11:31 AM
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#2
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Jun 9 2007, 12:01 PM
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#3
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usually when u guys OC, do u pump chipset and HTT voltage as well?
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Jun 9 2007, 12:34 PM
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#4
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QUOTE(kalakatu @ Jun 9 2007, 12:29 PM) 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.. |
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Jun 9 2007, 12:37 PM
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#5
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QUOTE(kalakatu @ Jun 9 2007, 12:36 PM) try to pump more vcore.. 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?) divider already lowest(400) but still same. timing 5-5-5-15-20-2t also no go... |
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Jun 9 2007, 03:43 PM
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#6
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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 ahh, i forgot i still haven't play with multiplier... thanks for reminding me... Added on June 9, 2007, 2:56 pm Try to use other multiplier -pWs- btw, HT link around 1000-1100 still acceptable right? This post has been edited by mfa333: Jun 9 2007, 03:45 PM |
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Jun 10 2007, 10:05 AM
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#7
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Jun 11 2007, 08:50 PM
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#8
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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? This post has been edited by mfa333: Jun 11 2007, 08:51 PM |
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Jun 12 2007, 09:56 AM
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#9
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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. there's no 9.5 multiplier table there.QUOTE(8tvt @ Jun 12 2007, 09:24 AM) i believe mfa333 tried... 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... 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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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.. 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).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.. i might be wrong.. 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. that means, my actual divider on DDR533 setting is /8 ? |
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Jun 12 2007, 10:12 PM
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Jun 13 2007, 09:54 PM
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QUOTE(smokey @ Jun 13 2007, 09:23 PM) flashed to 507 liao... of course not enough voltage. u cant hit 3ghz with stock voltage.. 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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Jun 13 2007, 10:36 PM
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#13
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Jun 18 2007, 01:52 AM
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Jun 18 2007, 02:32 AM
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Jun 20 2007, 01:24 AM
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Jul 13 2007, 09:13 PM
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i still phailed to get my brisbane hit 3ghz barrier..
edited: on Tforce 570SLi mobo... This post has been edited by mfa333: Jul 13 2007, 09:13 PM |
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Jul 15 2007, 12:30 AM
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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.. |
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Jul 25 2007, 11:23 AM
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