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How do i overclock phenom II x4 925

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January 11, 2011 12:31:17 AM

hi i am confused as to where to start overclocking and where to stop. i have phenom II x4 925, just got corsair a70 cpu cooler, 1600mhz ram( 3 sticks of 2gb) and i dont know how to overclock. how did you begin this journey? ive started with the front bus and pushed it up to 210 then dont know where good voltage for cpu would be. this is obviously my first overclock and i feel like a lost idiot. i seem to only come across people who already know what they are doing, and i'm just stuck on the outside of this circle of knowledge. its getting a little frustrating. heres my system

phenom II x4 925
corsair a70 cpu cooler
6gb of a-data 1600mhz ram
asus m4a87td evo motherboard
sapphire 4870x2 graphics
rosewill 630w continuous
500gb hitatchi

More about : overclock phenom 925

a b À AMD
a c 242 K Overclocking
January 11, 2011 1:58:39 AM

just go bios :
Disabled turbo, C1E , Cool n Quiet,
set overclock to manual
increase FSB , increase voltage RAM & CPU !
this overclock focus on OC clock speed your CPU..!

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January 11, 2011 2:05:05 AM

is it necessary to oc ram? and by how much? i saw someone put cpu volt at 1.4 for the same cpu, so thats what i eventually got up to from 1.35. its at 3.3ghznow seems stable. didnt oc ram though
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a b À AMD
a c 242 K Overclocking
January 11, 2011 2:24:32 AM

use software CPU-Z + CPUID hardware monitor ( for control temperature) here: www.cpuid.com & u can see anything about clock your system .
first u must know this software !
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January 11, 2011 4:07:04 AM

fattony487 said:
is it necessary to oc ram? and by how much? i saw someone put cpu volt at 1.4 for the same cpu, so thats what i eventually got up to from 1.35. its at 3.3ghznow seems stable. didnt oc ram though


Use this guide:
http://www.tomshardware.com/forum/258573-29-black-editi...

The only time you really want to raise your voltage is when your not really hitting a stable multiplier.

You don't HAVE to oc your RAM. You can OC your ram and CPU buy raising the FSB, but IMHO its better to just raise the CPU first then worry about the other stuff for stability and reliability reasons.
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January 11, 2011 5:48:06 AM

i dont have a black edition, so i can not change the multiplier. i'm broke so this what i got. any way all i have to work with is the fsb, i think. but the fsb screws with everything else. and wondering if i need to screw with ht mhz and nb mhz and their voltages.
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January 11, 2011 5:56:25 AM

and my comp cutt off while running the 3.3. It was running prime95 for 30-45 min when it happened. Now i'm back at 3.1ghz 1.4v and running processor stability test with cpuid just like i wa told. I'm going for a usefull clock somewhere above 3.5ghz so i can run games smoothly with 4870x2 at 1680x1050
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a b À AMD
a c 242 K Overclocking
January 11, 2011 5:56:53 AM

u can start OC , all voltage under auto & try increase FSB up step by step 5 5 5 ...
just FSB (205...210...215..) try...
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January 11, 2011 5:57:53 AM

and my comp cutt off while running the 3.3. It was running prime95 for 30-45 min when it happened. Now i'm back at 3.1ghz 1.4v and running processor stability test with cpuid just like i wa told. I'm going for a usefull clock somewhere above 3.5ghz so i can run games smoothly with 4870x2 at 1680x1050
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January 11, 2011 5:59:55 AM

k will do now
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January 11, 2011 6:01:24 AM

dont know whats enough or too much though in terms of changing voltage
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January 11, 2011 6:16:04 AM

and my comp cutt off while running the 3.3. It was running prime95 for 30-45 min when it happened. Now i'm back at 3.1ghz 1.4v and running processor stability test with cpuid just like i wa told. I'm going for a usefull clock somewhere above 3.5ghz so i can run games smoothly with 4870x2 at 1680x1050
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a b À AMD
a c 242 K Overclocking
January 11, 2011 6:20:45 AM

test for stabillity your OC

use Prime95 : use small fft 8 hours
intelburn test : use high run 20 loop maybe 20minutes
Linpack /
OCCT : 2 hours enough

CPU-Z just control see clock CPU, GPU,FSB RAM,
Hw monitor see temperature
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January 11, 2011 6:21:15 AM

and my comp cutt off while running the 3.3. It was running prime95 for 30-45 min when it happened. Now i'm back at 3.1ghz 1.4v and running processor stability test with cpuid just like i wa told. I'm going for a usefull clock somewhere above 3.5ghz so i can run games smoothly with 4870x2 at 1680x1050
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a b À AMD
a c 242 K Overclocking
January 11, 2011 6:36:05 AM

Disabled turbo, C1E , Cool n Quiet .. ?
i think your Ram in 3.3ghz still auto voltage or too high Ratio 1600 (1:1) : your Stcik ram 3 and your mobo just support Dual , use 2 stick ram this is best performance for OC
downgrade your ratio RAM to 1333 (3:10) and set 8-8-8-23 and raise Vdim 1.62v ~ max 1.65v
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January 11, 2011 7:37:28 AM

sorry bout the multiple posts. I'm using my phones and the browser sucks. I can see why your a veteran. So is that ''relaxing the timing''? Expectations are a bitch, i expected to do this in a couple of hours, but i'm still clueless. I jst read that if the vcore is too low and the fsb too high, i could harm the cpu? Anyway i upped the volt back to around 1.4 and changed ram timing doing prime 95 now, bout to go back and change the ram voltage to 1.65. I just looked up my rams voltage on newegg and it says 1.65 to 1.85. I'm running the small fft test in prime but was confused what other tests you weretalking about what other testes you talked about
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a b À AMD
a c 242 K Overclocking
January 11, 2011 7:52:56 AM

sorry this is just language Gap lol.. (google translate)

it's ok... i'd mention option software stress of other stress test ! if u like that ...!
and prime 95 is the best for test stress.

u need see in :
http://www.tomshardware.com/forum/258573-29-black-editi...

or just ASk question in :
http://www.tomshardware.com/forum/261868-29-overclockin... ( forum master overclock AMD )

http://forum.suprbay.org/showthread.php?tid=3782

good luck!
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January 12, 2011 2:27:59 AM

alright i appreciate the help ive been provided. the most stable ive gotten is such
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January 14, 2011 1:50:50 AM

woops screwed up the last post, anyway core clock is at 3511.6 bus is 250.8 to achieve this, cpu volt is 1.51 and ram timings are normal 9-9-9-24 but at 1333 and 1.65v. ht, nb, and cpu/nb voltages are all pushed up a small bit. it still is stable for only about thirty min of prime95 blend. grrrraahhh! any suggestions?
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Best solution

a b À AMD
a c 242 K Overclocking
January 14, 2011 2:15:06 AM

Voltage RAM : mx 1.65 v don't over !
set your RAM timming 9-11-11-27-40 stil (3:10 /1333) set DC0/DC1/both
or more performance go down Ratio to 1060 (3:8) set Auto
test again!
for fast test stress use Intelburn Test just 12minutes !

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January 14, 2011 7:29:42 AM

Best answer selected by fattony487.
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January 14, 2011 7:36:59 AM

what are the timing numbers you posted? the first four, i know where those go but the 40 is foreign to me and so is the dco/dc1. and there was a small period a couple days ago where i had the ram voltage at 1.7v, woops
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a b À AMD
a c 242 K Overclocking
January 14, 2011 7:53:46 AM

the first is LATENCY

The 2nd number is the tRCD => the delay needed between the RAS (Row address strobe) and CAS (Column address strobe).

The 3rd number is tRP => known as RAS Precharge. This is basically the delay needed to switch between rows (for the memory chip to terminate access to one row and start the process of accessing another).

The 4th number is tRAS => the delay between receiving a memory access request and initiating the RAS (Row Address Strobe) to start the actual retrieval process.
These delays all factor into a memory reference ... but since many accesses are "across a row", the CAS delay has the most notable impact on system performance. The others only happen when access switches to another row.

the 5th number TRC => Row Cycle .. or bannk cycle time in (see in CPU-Z)

all RAM timming : http://www.tweakers.fr/timings.html

your ram is DDR3 1.7 too high .. don't over 1.65

i hope will help you
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January 14, 2011 6:38:14 PM

yea i figured it wouldve been ok with the ram because the voltage on the stick says 1.65-1.85, but good thing you told me. its stable but its just not stable enough to complete a high stress level on that program. i brought the cpu freq down to 249 and upped the cpu voltage a little more and its the same story. i think i should just settle with upper 3.3's or 3.4 because when the comp isnt fully stable, my games down run smoothly. the video card chokes up every 5 sec or so
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January 14, 2011 6:38:45 PM

and yes you've been a lot of help
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!