Overclocking Athlon XP 1800 w/ retail fan ?'s

[Treebeard]

Okay so I oc'd my xp 1800 to xp 2100 speeds and ran 3dmark2001 for a while to see if it would heat up or crash. there were no problems I saw and the temp went from 46c to 48c. Now I only have retail heatsing/fan and 2 80mm case fans for cooling off my box. How high can I safely push my cpu with using only the retail heatsink/fan?

[Craig Tucker]

Try it and keep a close eye on the temperature, the cpu's are supposed to be rated upto 90 degrees C, but I would personally try to keep it below 70. My XP 2800+ barton runs at 60 degrees C with no overclocking. I am going to put a better fan on mine to try and get the temp down so I can OC a bit.

[Treebeard]

I read somewhere that some versions of the xp 1800 are actually xp 2600's locked at 1800. Maybe I have one of those versions, because I increased the fsb to 300 and the temp is not jumping significantly. Im gonna do some more testing tonight and try to push it to the 333fsb , I should be able to get approx 1.93ghz speed out of my 1800 wonder how much that would speed up my programs. may have to do some program tests if it works.

[energy80s]

Test it on video encoding as that will show the most direct increase in speed!

[Treebeard]

Well I did some testing last night.

I took a dvd-5 and ran it through clonedvd and stripped out all the extras. I did this for test purposed, not actually going to burn the disc. Running at the stock speed of 1.53ghz it took 20 minutes. when I put the fsb up to 330 (max in bios) it was running at 1.90ghz and clonedvd took 16 minutes for identical project. I moved a case fan to blow directly on the heatsink and the temp never got over 45c.

edit: found out that an athlon xp 2600 w/ 333fsb runs at 1.91ghz. So for no money I virtually upgraded from a xp 1800 to a xp 2600

I love overclocking

[holistic]

I love overclocking

Good for you , me too. But a word of caution.......use caution .

www.overclockers.com has good advice.

My 2500+barton (a different core) O/C's a little different to your XP, I can lower the multiplier THEN increase the FSB (10 * 210 ) to achieve 2100 Mhz with only a 0.5 volt increase. ~ (room temp 20 / case 23 / cpu 33 idle / 40 after 2 hours of prime95)

If you find instability then increase your Vcore.
Memory timings and speed may also hinder your O/C attempts

TIP : If your motherboard supports it , set it up to shut down once it reaches an unsafe temp. Mine is set at 70C.

Programs that may help you "tweak" are motherboard monitor & CPUidle

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