athlon xp-m overclocking \ VOGONS

athlon xp-m overclocking

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First post, by noshutdown

Posted on 2015-10-21, 01:13

noshutdown Offline

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i plan to get some mobile athlons with barton core for overclocking, many people prefer them as they can run at lower voltage than desktop models, thus generating less heat and thereby reducing the risk of heat death.

now there are 4 models to choose from:
AXMD2400FJQ4C, rated at 1800mhz with 1.35volt.
AXMF2500FVQ4C, rated at 1866mhz with 1.4volt.
AXMG2600FQQ4C, rated at 2000mhz with 1.45volt.
AXMJ2800FHQ4C, rated at 2133mhz with 1.55volt.

and i have two questions:
1. do all mobile athlons have unlocked multiplier?
2. does anyone know which model of the four does better in overclocking ? i don't mean to go for setting an overclocking record, instead i see 2.3ghz as a safe limit(just like 600mhz for k6-3+), and i want them to run at this speed with lowest voltage as possible.

Reply 1 of 6, by Imperious

Posted on 2015-10-21, 01:23

Imperious Offline

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I bought this one

http://www.ebay.com/itm/Athlon-XP-MOBILE-2400 … MjTUXBE2LLP6s8Q

It's running at 2300mhz in my Abit KT7-RAID no problems at all. I did have to make a minor reversible modification to access multipliers above 13 though, known as
enabling the 5th bit. I am going to fit a switch, then I can access multipliers from 5 all the way to 24.
What motherboard are You fitting it into?

Atari 2600, TI994a, Vic20, c64, ZX Spectrum 128, Amstrad CPC464, Atari 65XE, Commodore Plus/4, Amiga 500
PC's from XT 8088, 486, Pentium MMX, K6, Athlon, P3, P4, 775, to current Ryzen 5600x.

Reply 2 of 6, by candle_86

Posted on 2015-10-21, 02:05

candle_86 Offline

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I had an XP-M 2500 back in 2006 I pushed to 2.6 with 1.8V

They should all do rather well considering they are really normal atlhon XP cores that are designed for 1.65V operation and safe up to 1.8

Reply 3 of 6, by noshutdown

Posted on 2015-10-21, 04:41

noshutdown Offline

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Imperious wrote:
I bought this one […]
Show full quote
I bought this one

http://www.ebay.com/itm/Athlon-XP-MOBILE-2400 … MjTUXBE2LLP6s8Q

It's running at 2300mhz in my Abit KT7-RAID no problems at all. I did have to make a minor reversible modification to access multipliers above 13 though, known as
enabling the 5th bit. I am going to fit a switch, then I can access multipliers from 5 all the way to 24.
What motherboard are You fitting it into?

i havn't got a board yet but i am planning to use a nforce2.
how much voltage do you need to run it at 2.3ghz?

Reply 4 of 6, by Imperious

Posted on 2015-10-21, 07:53

Imperious Offline

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I had it on 1.775v, but It was just for benchmarking, it likely will be stable at a lower voltage than that.

Hopefully nforce 2 motherboards have a wider range of multipliers, someone else here will know for sure

Atari 2600, TI994a, Vic20, c64, ZX Spectrum 128, Amstrad CPC464, Atari 65XE, Commodore Plus/4, Amiga 500
PC's from XT 8088, 486, Pentium MMX, K6, Athlon, P3, P4, 775, to current Ryzen 5600x.

Reply 5 of 6, by Marquzz

Posted on 2015-10-21, 08:07

Marquzz Offline

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I have all of those and they all overclock well, all though the 2800+ stands out a bit. Have gotten that one up to almost 3000 MHz air cooled during benchmarks. I used around 2.1 V vcore so not recommended during longer periods, but you could probably run it at around 2750 24/7 with maybe 1.75V which is fine.

All of them is fully unlocked and you have multipliers from 6 to, well, enough 😀

Reply 6 of 6, by TELEPACMAN

Posted on 2015-10-21, 08:19

TELEPACMAN Offline

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Location: Portugal

I used to run my 2000MHz model at 2400MHz, stock voltage, Zalman copper silent cooler.
Nforce2 chipsets have 100Mhz increments on the final clock speed. (500MHz-3000MHz)

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