Overlocking Athlon64 3500+

Z

Zlatan

New Member
Right, before you say anything, I have read the OC 101 ;)


Having said that, I still dont feel comfortable enough to OC my cpu withput double checking here.


The CPU is an AMD Athlon64 3500+ Venice running at it's original 2.2 Ghz.

My Motherboad is Abit KN8.

Memory is Kingmax DDR400 2x512 + 2x256 running in Dual Channel mode.

As for the cooling, the CPU fan is a Golden Orb II, and I have all in all 4 case fans. One 120mm one at the front, blowing air into the computer, one 80mm side fan blowing air into the CPU fan, two 80mm fans at the back drawing air out, as well as the fan on the PSU.

When idle, the BIOS reports temperatures of around 29°C for the CPU.


Now, the BIOS lets me change some values, however, I'm not sure what everything is so I'll just post it all here:


CPU FSB Clock: 200
Multiplier Factor: x11
PCIe Clock: 100 MHz

Voltages
CPU Core: 1.400 V
DDR RAM Voltage: 2.60
DDR Ref Voltage: Default
nForce4 Voltage: 1.50
Hypertransport Voltage: Default


Now, my question would be: how much can it be OCed safely. Again, I read the 101 and know that no two systems are the same ;)

However, there is a rough estimate you could give me.

Also, what exactly is it best to adjust to achieve that.



Thanks in advance, and sorry for the long post. :)
 
Just judging by what i have done, and seen others do online, i would guess 2.4 or 2.5. Good job reading the OC101, most people dont.
 
I got mine to 2.4 Ghz at a comfortable voltage. Pretty crappy I know, but the 3500+ venice dont seem to OC as well as the rest of the A64.

EDIT: I have an E3 stepping, E6 would probably OC differently.
 
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I got mine to 2.4GHZ with stock vcore. I havent reached its limits yet, so i dont know how far you can go. I would say up to 2.4ghz is safe, and after it might get a little unstaable.
 
So whats the best way to do that? Increase the CPU Clock or the multiplier? What about the Core voltage, etc?



P.S. Damn typo in the title, forgot a c ;)
 
i have this same cpu mines a venice tho...seems the cpu configuration in the bios is all greyed out can't change anything in it so i can't overclock...but i've seen some get to 2.7 Ghz and be stable...not saying you should try this but from 2.2 to 2.5 is quite a decent OC for that cpu
 
Heya

Well obviously, you should try to up the core because the multiplier is locked. You can only decrease it. You should be able to hit about 2.6Ghz easily @ about 1.5V - 1.55V. I have my Venice 3000+ @ 2.53Ghz right now but had it stable as a rock for about two months @ 2.7Ghz - 1.6V.

JAN :D
 
Actually, with me the multiplier isnt locked. AFAIK I can change all the values.


Soo... by how much to increase/decrease the CPU clock/multiplier/core voltage?
 
You serious? You sure the values aren't just there but they dont work? There have been cases of CPUs randomly unlocking but its very, very rare.
 
Aaah, you're right, I apologise. The multiplier is locked to 11, I can only decrease it. However, it seems that the other values arent locked.


So I can only chnage the CPU Clock and voltages. By how much do you reccomend?
 
Heya

Well,

they are "unlocked" in the BIOS but LOCKED on the processor. Setting anything above 11 will result in failure of that setting. I would try this setting:

11 x 236Mhz @ 1.5V

If that does not work, try it @ 1.55V

You should hit 2.6Ghz easily.

JAN :D
 
OK, I will try it in a few days, want to get 3DMark first, to compare the before and after results. Hope I dont fry my CPU tho ;)
 
Haha

Your CPU will be fine. As long as the voltage does not go over 1.6, you should be safe. Just for your info, I had it @ 1.65V - 2.7Ghz (300mhz x 9) for over half a year without a single problem. However, I would not recommend it.

JAN :D
 
I'm pretty interested in hearing what kind of results you get since I just bought an Athlon 64 3500+ E6 revision myself. But I doubt I'll be able to OC much with the temps I have.
 
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just to tell you... you can't run different size sticks in dual channel mode.
2x512 + 2x256 with 4 sticks will run in single channel... and depending on the stepping of the CPU is probably running 2T as well. depending on what you're doing with the thing it may be worth the speed, but it may be worth more memory too.
 
I asked that on this very forum before I bought the computer and was told it could work if paired correctly.

And indeed, the memory check on startup reports it as dual channel, as does CPU-Z.
 
jancz3rt said:
Well,

they are "unlocked" in the BIOS but LOCKED on the processor. Setting anything above 11 will result in failure of that setting. I would try this setting:

11 x 236Mhz @ 1.5V

If that does not work, try it @ 1.55V

You should hit 2.6Ghz easily.

JAN :D
Click to expand...



Oh, BTW, keep in mind I got this computer hald a year ago and wont be replacing it for another 3 years perhaps. Will it still worg overclocked by then?


Thanks :)
 
Yes it will.

I cannot guarantee it 100% but I am almost entirely certain it would. I had all my processors overclocked and never did one die on me. If you do not go crazy, it will last for long. Crazy voltage or high temperatures usually kill the CPU.

2.6Ghz @ 1.5V - 1.55V will be SAFE

My temps on my 3000+ Venice are 29 Celsius idle and a max of 43 Celsius on load (stock AMD HSF).

JAN :D
 
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Zlatan said:
What are your temps? My CPU temp seems to float around 28°C when idle according to BIOS.
Click to expand...

Mine are around 40°C idle and 50°C under 100% load. Very high in my oppinion, atleast when comparing to what others get with their stock cooling.
 
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