33 replies to this topic

[VROSA]

Freq.: CPU Int. (Core / Mem / AGP / PCI)

At home I have an Athlon64 3000+ (s939) working @ 110%:

Initial: 1,80 GHz (200 / 200 / 66,6 / 33,3)
Final: 1,98 GHz (220 / 220 / 66,6 / 33,3)
DDR: 200*2*1,10 = 440 MHz
RAM Timing: 3-4-4-8
Status: Stable
CPU Temp on load: ~ 50-60º C

At work I use an P4 HT 3,00 GHz (mPGA 478) working 127%:

Initial: 3,00GHz (200 / 200 / 66,6 / 33,3)
Final: 3,80 GHz (253 / 211 / 66,6 / 33,3)
DDR: 166*2*1,27 ~ 422 MHz
RAM Timing: 3-4-4-8
Status: Stable
CPU Temp on load: ~ 40-50º C

[Linoman]

Well once I tried to over clock my Celeron 900mhz and I got it up to 1 GHZ

[Nvyseal]

It would be nice to have a tutorial on "how to" overclock here on x64

[Linoman]

The only thing I can write about when it comes to overclocking is using one of those automatic apps. Geez I hate those,,,

[Dutchie]

I use my computer the way it's build. I don't know how to overclock, a guide would be usefull, yes!

[VROSA]

Athlon64 - Simple Overclock Guide for AMD Athlon64

Stock Profile:

Athlon64 3000+ (S939)
Speed: 1800 MHz
Core Speed: 200 MHz
Multiplier: 9X
-----------------------------------

The CPU has an internal clock (core clock) generated by the clock generator chip.
If you increase (in BIOS) the core frequency, the MoBo FSB is also incrases at the same rate.
Memory frequency is also controlled by the FSB, so be aware that you may be overclocking memory as well.
HTT (Hyper Transport) is a fast data transfer way between CPU and AGP, and also depends of the core clock.
In all s939 CPUs the maximum HTT value is arround 1000 MHz (5x 200 MHz).
The good thing of the s939 CPUs is that all of them have AGP / PCI lock, what lets its frequencies unchanged during an overclock.
Take care with s754 CPUs, some of them doesnt have the lock feature and may demage your video cards.

Lets go:

1) I decided to reach arround 2 GHz, not a big deal...

>> Consider setting DDR to a lower value in BIOS if possible. Note that if DDR400 is set to 333 MHz, after an overclock of 20% it will be running again @ 400 MHz.

2) HTT frequency shouldnt be much higher than stock value, sometimes you may consider slowing it down to 800 MHz (4x).

OC1 Profile: Stable

Athlon64 3000+ (S939)
Speed: 1980 MHz
Core Speed: 220 MHz
HTT: 1100 MHz
DDR 400: @ 440 MHz (limit)
Multiplier: 9X

OC2 Profile: Stable

Athlon64 3000+ (S939)
Speed: 2160 MHz
Core Speed: 240 MHz
HTT: 960 MHz
DDR 400: @ 399,6 MHz
Multiplier: 9X

--------------------------------------------------

You may try to loose the RAM timings at core frequencies above 240 MHz, it may help a lot.

-------------------------------------------------------
To overclock on the fly try SetFSB or ClockGen
-------------------------------------------------------

vrosa.

Edited by vrosa x64, 11 December 2007 - 06:40 AM.

[Nvyseal]

thanks Vrosa, ill give it a try and report back

[stormrosson]

my Opteron 165 dual core runs stock at 1800mhz (9x200) ,I run it at 2700mhz (9x300) my ram is running at 225mhz, prime stable :cowboy:

[m.oreilly]

stormrosson, on Jul 17 2006, 01:56 PM, said:

my Opteron 165 dual core runs stock at 1800mhz (9x200) ,I run it at 2700mhz (9x300) my ram is running at 225mhz, prime stable :cowboy:

holy <edited> storm! :gutar:

[simon]

cpu 262.0 mhz
memory 133 mhz
vga 102 MHZ
pci 33.3 MHZ
cpu 26.16 MHZ unclocked 18.00 mhz over all clocking 131%
ohh my temp is 42 c to 53 c

Edited by simon, 18 July 2006 - 07:33 PM.

[Linoman]

Excellent guide vrosa x64, thanks so much

[clarky3429]

ive never tried to, im not up to taking the risk (as i couldnt afford to replace the parts)

[BlueScreenOfDeath]

m.oreilly, on Jul 17 2006, 04:02 PM, said:

holy <edited> storm! :gutar:

I need your help then because i have the same cpu and running DDR400 ..ive done a lil modest oc to 2ghz ..but wanna hit where u hit

[VROSA]

Quote

my Opteron 165 dual core runs stock at 1800mhz (9x200) ,I run it at 2700mhz (9x300) my ram is running at 225mhz, prime stable

WOW

It is more than awesome, what kind of cooling are u using ?
You set your DDR400 to 3:2 mode (300 mhz) before overclock or you have DDR 450 to support 2*225 MHz ?

Congrats man, you got an excellent mark, but i wouldnt dare such thing !

[stormrosson]

ok here goes guys, I use an XP-90 with a 92mm panaflo for cooling, I'm using a DFI NF4 LP D, that I hard modded to an sli ultra, my ram divider is at 150mhz, I use 4x512 mB Super Talent single bank PC3200 dimms at 2.7 v. 3-3-3-6-2t , my cpu is at 9x300mhz HTT and 1.5 vcc, my HT is at 3x or 900mhz, this gives my final clocks of 2700 mhz cpu, 225mhz ram speed, hope this helps :cool2:oh yeah my cpu idle temps are around 31c and 41-42 under load with both cores.

Edited by stormrosson, 18 July 2006 - 04:57 PM.