HELLO!

I trying to overclock my new hardware. I can not afford best new stuff, so what I have is SOCKET 939. My colleague told me the best 939 motherboard is the "DFI nForce4 UT Ultra-D", and I buy a used one in good shape. Works good good good.

I had planned to buy San Diego CPU, but instead I find a 64-bit X2 2.0 GIGAHERTZ of Toledo. Overclocking it and can't get past 2.2 GIGAHERTZ. How can I get up to 2.5, 2.8, 3 GIGAHERTZ?

"AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ 2.0GHz"

AND, I like FOUR GIGAbytes of memory, can I do it with this board and how? And how good will performance it be then?

THANK YOU FOR YOUR TIME!

Jit Kwong said:

Jit, a couple of things.
The Toledo core running at 200 MHz standard is a 4400+ unit, not a 3800+.
Thats a 200 MHz @ 11x multiplier = 2200Mhz x 2 = 4400+. The Toledo core gives you double the cache RAM over some of the earlier 939 cores.

Now going from 200MHz x11 @ 4400+ to a 260 x 10 or a 5200+ type speed is doable with after market air, but getting above this is usually difficult to achieve stability. In order to get to 3Ghz speeds you'd have to support 273Mhz x 11, or 300Mhz x 10 or possibly 286Mhz x 10.5. The very high FSB speeds would require not only incremental CPU Voltage, but Chipset Voltage and DRAM voltage increments. There are some folks that have achieved this, but most of them are running watercooled systems or even chillers.
A general purpose system that is stable, with good components using the Toledo Core, using Air seems to cap out around 2.8GHz total, or at least that is my cap. Others will probably have better peaks, but don't expect to reach them, even if you are using the same HW. Sometimes things just come together.

Gerritt

Gerritt ... huh?

Since when is a 2.0GHz Toledo not a 3800+? That's what I have and ... it is.

200MHz x 10 = 2GHz.

Jit, I have the same motherboard and CPU, and my CPU at 2.8GHz is stable for at least 12 hours or Orthos. I'll jot down all the info I have in the BIOS and post it for you. Not sure what all the settings I have off the top of me head. I am using a divider though, to keep the memory at DDR400.

OK Jit, so ...

I have mine at 280x10 at 1.400V (not totally sure if it's stable here, 12 hours on Orthos was at 1.425V. LDT is set to x3, divider is at 7:10. What memory are you planning on using?

CPU-Z:
http://valid.x86-secret.com/show_oc.php?id=399644

Hi Gerritt, Hi McFly!

My chip is 3800+ 2.0GIGAHERTZ at "stock" and "multiplier" is 10-times.

I would like to see 2.8 like that! Wow!

I download "Orthos SP2004" to test, it say "GO" for six hours (all I test). That is to 2.5GIGAHERTZ!!!!!!! Pretty good start.

Thank you Gerritt for tip on higher "DRAM" memory voltage, I think that helps!!!!

Any other pointers??? I would like to see 2.8 like you.

Well what voltage are you at right now?