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 Valum ram vs performance ram, effect on overclocking the FSB

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Pewufod
post Nov 11 2008, 06:52 PM

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how to check the FBS and everythig for the ram ah.xD
mugen89
post Nov 11 2008, 07:02 PM

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QUOTE(Pewufod @ Nov 11 2008, 06:52 PM)
how to check the FBS and everythig for the ram ah.xD
*
Check it under BIOS or using CPU-Z.
Pewufod
post Nov 11 2008, 07:17 PM

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how do i go to CPU-Z
apis
post Nov 11 2008, 07:19 PM

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U have to download it first..google it first..there's a lot of website to download..
Pewufod
post Nov 11 2008, 07:57 PM

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Thanks alot smile.gif
zim_civil
post Nov 11 2008, 10:26 PM

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QUOTE(OC4/3 @ Nov 11 2008, 02:34 AM)
Could be a lot of factor.
Lack of vdimm,timing is too tight for value ram or you get bad luck and get some defective ram(Always memtest for 1st night of ram)
*
tenkiu2
...i'll memtest for my upcoming rig
fathir
post Nov 12 2008, 06:23 PM

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boon.fong
me used value ram also..
overclock my HTT to 250mhz
and timing 4-4-4-12
still not get errors in memtest, orthos, prime95, bla3
but beyond 250mhz, cannot boot smile.gif
luyut
post Nov 13 2008, 05:03 AM

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just want to ask is it possible to pair hi performance with value one?cause mine cant boot..aish..
yemz88
post Nov 14 2008, 11:59 PM

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wanna ask every body bout my probs... hehe...
i oc my proc e8400 stepping C0.. actually i wanna oc to 4.0ghz but i fail... the highest i get only 3.7ghz... stable until here on orthos test...
here my status at 3.7ghz and my rig spec :
@ 3.7 GHz FSB 413mhz : vcore, 1.28v.. vdimm, 2.20v.. vMCH (NB), 1.30v....
FSB:DRAM = 1:1....
MCH multiplyer : 2
ram timing : 4.4.4.10
cpu multiplyer : highest 9X..


my rig spec as in siggy..
gigabyte ep45-ds3 ( BIOS F9)... latest BIOS...
ram kingston hyperX performance ddr2 800mhz
i think this 2 things most important part in oc...

my question :
1. it is bcoz my mobo or my proc not so good??
2. it is my ram holding it back??
or
3. not so lucky in this thing?? sweat.gif


overclockalbert
post Nov 15 2008, 02:33 AM

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try to change multi to X8 and fsb to 500.
add abit Vnb to 1.35v and Vcore to 1.3V
1:1 for fsb:dram ratio.

see what happen
goldfries
post Nov 15 2008, 02:38 AM

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up your vcore. i use 1.36 for my E7200.

btw this is not OCing help thread. smile.gif your RAM could be alright, may need to pump up vdimm too if you intend to push it much further.
yemz88
post Nov 15 2008, 05:20 AM

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hehe.. sori if a bit off from the topic... just wanna check if my ram get any prob or not... neway, i will try & post the result.. thanks sifus... thumbup.gif
goldfries
post Nov 15 2008, 06:36 AM

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try 400mhz where 1:1 results in 800mhz RAM. see if stable at that speed, which is 3.6ghz.
yemz88
post Nov 15 2008, 01:11 PM

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QUOTE(goldfries @ Nov 15 2008, 06:36 AM)
try 400mhz where 1:1 results in 800mhz RAM. see if stable at that speed, which is 3.6ghz.
*
now, i'm at 3.6ghz and it so stable 24 hours... but when i reach 3.7ghz, like in 24 hours it will reboot... at this clock speed, the ram value is 826mhz ( 9 x 413 )... and ratio is 1:1 FSB:DRAM... i only can push +26mhz more than stock speed... even at 827mhz, it not pass the orthos test for 5 min...
cstkl1
post Nov 15 2008, 01:39 PM

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QUOTE(yemz88 @ Nov 15 2008, 01:11 PM)
now, i'm at 3.6ghz and it so stable 24 hours... but when i reach 3.7ghz, like in 24 hours it will reboot... at this clock speed, the ram value is 826mhz ( 9 x 413 )... and ratio is 1:1 FSB:DRAM... i only can push +26mhz more than stock speed... even at 827mhz, it not pass the orthos test for 5 min...
*
hmmm

do this and post the result
http://forum.lowyat.net/index.php?showtopi...post&p=21038827

and also the voltages and settings u used which are relevant

vcore
vdimm
fsb/vtt
nb
sb
pll
gtl


Added on November 15, 2008, 1:44 pmhmm pretty good bios
http://www.xbitlabs.com/articles/mainboard...ep45-ds3_9.html

This post has been edited by cstkl1: Nov 15 2008, 01:44 PM
yemz88
post Nov 15 2008, 04:27 PM

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thanks for the guide bro cstkl1... look like biostar t45 has quite diff in bios setting than gigabyte but i'll try it... there is one diff in my bios than yours... it's GTL... what is gtl?? in my bios dun have this thing... maybe it in diff name i guess.. here what it give in the bios...

cpu PLL, cpu termination, cpu ref, cpu core.....
DRAM voltage, DRAM termination, Channel A ref, Channel B ref......
MCH core, MCH/DRAM ref, MCH ref, ICH I/O....
cstkl1
post Nov 15 2008, 09:24 PM

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for ure mobo
cpu termination = fsb = vtt voltage
cpu ref = cpu gtl
mch = nb
mch ref = nb gtl
mch/dram ref = nb/ddr2 gtl
i/o= SB

for the skews for channel A and B.. leave it on auto..doesnt make a difference unless ure doing high mhz on the cpu with high speed rams
especially when go above 4.4ghz..

gtl calculation for u is this
cpu gtl = 0.667 = cpu ref/cpu termination
nb gtl = 0.64 = nb ref/cpu termination


so i would try this for 3.6ghz
set cpu ref to 1.12 what ever the lowest but not lower than this
cpu vcore for starters set to the stock vcore for ure proc at 3ghz when u boot..
nb set to 1.212v
nb gtl = 0.64
cpu gtl = 0.667 or 0.635
doesnt really matter until u go above 4.25ghz
set ure pll to 1.5 and ure sb to 1.5 lowest...

ok pll voltage for c2d not really usefull unless ure clocking 4dimms.
and always set the pll= i/o volages

vdimm leave it at ure rams highest rated vdimm.

ok whats the safest vdimm for 24/7 use

if ure using a 6 pcb layer .. 2.2v
if ure ram is 8 pcb layer 2.3-2.3
because of the unknown factor of ure cable management and airflow in ure casing i advise always use ram coolers...
get the dominator ram kit cooler.. its cheap and damn good quality
but make sure it doesnt hit ure cpu cooler. as it is quite high.

one thing i have noticed with ure mobo is the lowest vtt voltage is 1.2v

dont leave any of these voltages on auto
pll, cpu, nb, vdimm, sb vtt...

vtt dont go further than 1.4v
pll dont go further than 1.7v

good luck..


oh yeah also forgot ure rams
whats the performance level u should set

google anandtech rampage formula... good read http://www.anandtech.com/mb/showdoc.aspx?i=3208

performance level = tRD = Static tREAD value (biostar and gaygay)

for p45 is + 1 to that of x48/p35..
400fsb should be this
ram at
1200mhz 5-5-5-15 tRD = 6
800mhz 3-3-3-8 tRD = 7
and so on
1066mhz 5-5-5-15 tRD = 6/7 ( ok for this need a bit advance ram clocking with strap 400.. u need to run a pull phase and run some skewing)


This post has been edited by cstkl1: Nov 15 2008, 09:37 PM
yemz88
post Nov 15 2008, 11:22 PM

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wah.... so complicated.. rclxub.gif anyway, i'll try it... must understand one by one first... hehe... erm, one thing wanna ask... what safe temp for cpu and mobo (system) include on load?? i on my pc 24/7 non stop.... now, at 3.6ghz on load (when in stress test) can reach 65C....
OC4/3
post Nov 15 2008, 11:40 PM

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QUOTE(yemz88 @ Nov 15 2008, 11:22 PM)
wah.... so complicated..  rclxub.gif  anyway, i'll try it... must understand one by one first... hehe... erm, one thing wanna ask... what safe temp for cpu and mobo (system) include on load?? i on my pc 24/7 non stop.... now, at 3.6ghz on load (when in stress test) can reach 65C....
*
TJmax is 100 C so it is ok icon_rolleyes.gif
yemz88
post Nov 16 2008, 01:58 AM

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QUOTE(OC4/3 @ Nov 15 2008, 11:40 PM)
TJmax is 100 C so it is ok icon_rolleyes.gif
*
ouh... if more than 100C then what happen?? maybe my proc get burn?? explode?? sweat.gif

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