Overclocking Ideas...

[Amraam]

Hey,

Basically, I want to overclock my CPU. I want a challenge, I really want to increase my knowledge of these things.

I want to overclock my AMD64 4000+ (San Diego) CPU.

My current stock system:

• AMD64 4000+ (San Diego)
• Asus A8N-SLI Deluxe
• 2GB Corsair TwinX PC3200 RAM @ 3.0-3-3-8-2T (according to CPU-Z)
• Point of View nVidia 7800GTX OC'd to 470MHz core, 1300MHz memory

My CPU Specs:


My RAM specs:




A you can see, my current stock set up is 201 (HTT) x 12 (HTT multiplier) = 2412MHz (Core Speed).

The RAM is at 201MHz (DDR 400) * 5 (HT Multiplier) = 1004MHz (HT Link)

The Memory Devider is currently at the stock 1:1.

My plan is to do this:

• Up the HTT to 250MHz
• Reduce the HTT Multiplier to 11
• Reduce the HT Multiplier to 4
• and finally reduce the Memory Devider to 5:4

Doing the above, if I have calculated it correctly will give me:

250MHz x 11 = 2750MHz Core Speed

250MHz x 5/4 Memory divider = 200MHz RAM Speed (back to stock)

250MHz x 4 = 1000MHz HT Link

Calculations:


Obviously I don't know what voltages etc I'll need, but that will be part of the process.

Do my maths sound right? Will this be safe on stock cooling? My CPU currently Idles at about 30*C, and under full load is about 45*C. Is it too much of a jump from 2.4GHz?

Thanks!

[grim reaper]

All sounds good. The best advice is simply take is slow and do small increments each time then Orthos it for a few hours to make sure its stable. Assuming that the Corsair Value stuff its wise to keep it at its default clock speed and latencies as its not to hot for overclocking.

[Amraam]

Originally Posted by grim reaper

All sounds good. The best advice is simply take is slow and do small increments each time then Orthos it for a few hours to make sure its stable. Assuming that the Corsair Value stuff its wise to keep it at its default clock speed and latencies as its not to hot for overclocking.

Is TwinX Dual Channel poor RAM?

Would it be wise to update the BIOS? The BIOS is the stock from when I bought it about 16 months ago.

[grim reaper]

Originally Posted by Amraam

Is TwinX Dual Channel poor RAM?

Would it be wise to update the BIOS? The BIOS is the stock from when I bought it about 16 months ago.

TwinX I think is Cosair's way of saying its a dual channel set. If its XMS it should be pretty good.

[Amraam]

Originally Posted by grim reaper

TwinX I think is Cosair's way of saying its a dual channel set. If its XMS it should be pretty good.

Cool cheers.

Should I update the BIOS? I can't see the BIOS number in the POST. Strange.

Any other way to find out what my BIOS number is?

[grim reaper]

I personally wouldn't recommended flashing your BIOS. Unless there is a specific fault you need fixing just stick to your current one.

[Amraam]

OK cool, I thought the same

So whats, next? How to start off? Drop the multiplier first then up the CPU to say 210?

[NavalLord]

You idle at 30*C? Good lord. Mine idles at about 70*C.

[grim reaper]

Originally Posted by NavalLord

You idle at 30*C? Good lord. Mine idles at about 70*C.

Really? What are load temps at? That's shockingly bad.

[Amraam]

So whats the way to go about it now? Do I change all of the multipliers and dividers at once, and then sed the HTT to a speed that would equal stock, and then slowly increase?

IE set the settigns as above but put the HTT to say 220MHz which would result:

Core Speed: 2420
Memory Speed: 176MHz
HT Link: 880MHz

Then slowly up the HTT to reach the desired, but stable results?

[grim reaper]

Yep, sounds like a plan.

[Amraam]

Originally Posted by grim reaper

Yep, sounds like a plan.

Cheers mate.

I hate sounding like such a dumbass. This is all new to me, but I really want to learn.

Your help is really appreciated

[Amraam]

OK, I found all the settings in the BIOS, but I'm confused as to how to set the memory divider. The DRAM speed in the BIOS is 400MHz.
What do I set that to to get 5/4 divider? 333MHz?

[grim reaper]

Originally Posted by Amraam

OK, I found all the settings in the BIOS, but I'm confused as to how to set the memory divider. The DRAM speed in the BIOS is 400MHz.
What do I set that to to get 5/4 divider? 333MHz?

I've got a similar board to you (the premium version). I'll have a look in a bit once I have finished some History work.

[Amraam]

OK guys, results.

So far I've upped the HTT to 227Mhz, got the CPU 2497Mhz. Idle temps are 35 -37*C, and around 42-43*C at full load (Super Pi at 32M). That OK, not too warm?

DRAM I set to 333 and is running at 178Mhz according to CPU-Z and my calculations.

Gonna push it to 230 next boot up, and report back.

[grim reaper]

Its only when you get over 60c load that there is cause for concern.

Make sure you run Orthos or Prime 95 in order to check for stability. It is imperative you run these programs as they specifically pick up faults that you would notice if you were just say, playing a game.