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Overclocking phenom II x4 955 None BE

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February 2, 2013 2:57:51 AM

I'm relatively new to overclocking in general as I have a msi 870-G45 mobo. For the moment I have a stock heats sink but I have a Cool Master Hyper 12 Plus on the way as I speak and I'm just wondering whats the best method for overclocking this chip. I'm trying to get this to be stable at 3.8ghz with my Hyper 12 plus but I want to see where I can get with stock.

My motherboard does have an overclocking switch that allows me to overclock it automatically from 10%, 15% or 20% in this case I've tried each one at the temps are just way too high so I'm guessing with my cooler coming it It might make that switch more manageable but maybe its easier If I can do it from manually.
February 4, 2013 10:38:13 PM

Ok so after installing my new cool master hyper 12 plus I've managed to reach 3.84ghz which seems to be stable so far since I've been running prime 95 for about 45 minutes and the temperature never goes over 47c full load.

My vcore is set at 1.40, bus speed is at 238mhz, multiplier at 16x and my HT link (NB) is at 2142mhz. Not sure how the ram timings work but I have 4gb ddr3 1066 (533Mhz) of ram which by cpuz listings says that its running at 634mhz but I'll check it when I get back into my bios.

So just from going by this information do you guys think I can push this to 4.0ghz?
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a b K Overclocking
February 5, 2013 11:07:12 PM

Why are you using the fsb to overclock and not the cpu multiplier? It's easier and usually more stable since you're not introducing new variables into the overclock. It's always best to overclock one component at a time so it is easy to identify the source of instability.

Any specific questions I can answer?
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February 5, 2013 11:55:56 PM

I wish I could but its a none black edition so I cant get the cpu multiplier to go any higher than 16x
a b à CPUs
a b K Overclocking
February 6, 2013 12:44:13 AM

I'm not sure where you found a 955 that wasn't a black edition, if you could kindly link to something that suggests such a cpu exists it would be much appreciated. Or a picture of the box will do just fine..
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a b K Overclocking
February 6, 2013 11:41:51 PM

^well that sucks I hope you got it for a good price.

It can't hurt to try for 4.0Ghz so long as you keep voltage under 1.55 vcore and temps below 55C. Test using prime95 for at least two hours, using other tests and real world tests will help to verify true stability.
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a b K Overclocking
February 9, 2013 4:17:24 AM

:o  95w phenom x4 955 tray cpu :/  i wanted to buy that cpu but it wasn't available in my place :( 

though your board looks like that it has 4 phase power design for cpu
so you can clock it to 4ghz with ease and upto 4.25ghz using 250-266mhz fsb ;)  yup fsb or you can say reference clock

just try these settings and mess with them to achieve more clock
go to bios and load optimizes defaults and then restart and then turn off cool and quite , spread spectrum , and any other power saving feature.
then restart and go to bios and set memory speed to 1066 and then timings to auto, then restart and set timings to manual but do not change ram timings , then restart and then set ram speed to 800MHz , then restart and set cpu voltage to 1.45-1.5v and nb-cpu volts to 1.25-1.30 v, then restart and set fsb to 240mhz then restart and boot to windows and check for stability, if stable then aim for 250mhz and then ultimately for 266mhz fsb so as to get 4.25ghz cpu , 2666mhz nb and ht and ram at 1066mhz

try these settings/steps and let us know how much you get ;) 

i am getting jealous from your 95w daneb :( 

:)  and don't worry about this much high fsb, i also use 250mhz fsb to clock my thuban to 4ghz and nb to 3ghz (12x250=3ghz , because nb multipliyer of my system is unstable at anything higher than 12x :(  )
February 9, 2013 5:44:45 AM

truegenius said:
:o  95w phenom x4 955 tray cpu :/  i wanted to buy that cpu but it wasn't available in my place :( 

though your board looks like that it has 4 phase power design for cpu
so you can clock it to 4ghz with ease and upto 4.25ghz using 250-266mhz fsb ;)  yup fsb or you can say reference clock

just try these settings and mess with them to achieve more clock
go to bios and load optimizes defaults and then restart and then turn off cool and quite , spread spectrum , and any other power saving feature.
then restart and go to bios and set memory speed to 1066 and then timings to auto, then restart and set timings to manual but do not change ram timings , then restart and then set ram speed to 800MHz , then restart and set cpu voltage to 1.45-1.5v and nb-cpu volts to 1.25-1.30 v, then restart and set fsb to 240mhz then restart and boot to windows and check for stability, if stable then aim for 250mhz and then ultimately for 266mhz fsb so as to get 4.25ghz cpu , 2666mhz nb and ht and ram at 1066mhz

try these settings/steps and let us know how much you get ;) 

i am getting jealous from your 95w daneb :( 

:)  and don't worry about this much high fsb, i also use 250mhz fsb to clock my thuban to 4ghz and nb to 3ghz (12x250=3ghz , because nb multipliyer of my system is unstable at anything higher than 12x :(  )



Wait I actually have the 125w version, should I still try these settings? and by the way I don't see a manual mode for ram timings just auto, dct 0, dct 1 and both.
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a b K Overclocking
February 9, 2013 7:02:27 AM

dct 0 , 1 and both are manual
use both

if it is 125w version then aim for 4ghz only and place a fan on vrm system of board (chokes and IC's near back panel ports )


and try to keep voltage as low as possible (i think 1.45-1.475v will be enough to make it stable at 4ghz)
February 9, 2013 7:34:43 AM

truegenius said:
dct 0 , 1 and both are manual
use both

if it is 125w version then aim for 4ghz only and place a fan on vrm system of board (chokes and IC's near back panel ports )
http://www.msi.com/pic/product/five_pictures1_20100510160639_m.jpg

and try to keep voltage as low as possible (i think 1.45-1.475v will be enough to make it stable at 4ghz)


Ok thanks for clearing that up. I wasn't able to get it to 4ghz but I was able to get it at what it appears to be stable 3.9ghz with the fsb at 245mhz and my ram frequency at 1307mhz. Think that might be my limit?
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February 9, 2013 8:08:57 AM

set ram at lower speed with timings of 1066mhz (@800mhz , as 245fsb will put it just below 1ghz)

try blend test in prime 95 at your current settings,
and if it fails at large ftt then ram is limiting ( don't buy more speedy ram to resolve it because daneb's memory controller does not like fast ram so 1066mhz ram with low latency in dual channel is good for daneb)
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February 9, 2013 8:09:31 AM

set ram at lower speed with timings of 1066mhz (@800mhz , as 245fsb will put it just below 1ghz)

try blend test in prime 95 at your current settings,
and if it fails at large ftt then ram is limiting ( don't buy more speedy ram to resolve it because daneb's memory controller does not like fast ram so 1066mhz ram with low latency in dual channel is good for daneb)
February 9, 2013 8:36:22 AM

truegenius said:
set ram at lower speed with timings of 1066mhz (@800mhz , as 245fsb will put it just below 1ghz)

try blend test in prime 95 at your current settings,
and if it fails at large ftt then ram is limiting ( don't buy more speedy ram to resolve it because daneb's memory controller does not like fast ram so 1066mhz ram with low latency in dual channel is good for daneb)


I'm not entirely sure how to set the ram timings to 1066 mhz since every time I change the cpu fsb ratio that number will change, the only options I can change are the fsb/dram ratio for example [1:2] which at 245mhz would be 980mhz and [1:2.66] 1307mhz which Is where I'm at now and prime 95 on blend has been running for over 2 hours and no failures so far.

I'm not sure if my logic is right or not but if both ram timings work, wouldn't I go with the faster one? and by the way I have 4gb's of ram that runs at 1066mhz ddr3 but as of later today I'm upgrading to 8gb ddr3 at 1600mhz, not sure if that will help in relation to overclocking this cpu though.
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February 9, 2013 9:17:39 AM

i use automatic ram timing and manual clock
let me explain my way :D 
first i set ram to rated speed 1600mhz of my vengence (1066mhz in your case)
and then i set ram timings to auto
and then i take control of ram timings i.e, i set it to manual mode instead of auto (set it to both instead of auto in your case) but i don't touch ram timings
and then i set speed to 1333mhz and then raise fsb and then raise fsb to 250mhz to get 1666mhz ram
thats my way ;)  it saves me effort ( little bit lazzy :p  )

though 3.9ghz solid stable is good
at what voltage you are running it ?
and did you increased the nb-cpu voltage as it is necessary to increase it

also 1600mhz ram is also good , anything higher will show only little benifit in bandwidth because daneeb does not show much improvements with increased ram speed
so you can go for it , also try for lower latency like cl7@1600mhz :) 
!