Computing.Net - AXP-M 2400+ vs AXP 2800+

Subject: AXP-M 2400+ vs AXP 2800+

Original Message

Name: sano
Date: February 7, 2008 at 19:47:22 Pacific
Subject: AXP-M 2400+ vs AXP 2800+
OS: win xp
CPU/Ram: 2500+ / 1.5gb

Comment:

Hi all,
Thinking of upgrading my old rig. Which of the above processor can i get higher clock speed?(Overclocking)
Yeah, don't ask me why, my 2500+ just make it pass 2.0ghz MAX.. Nothing more.

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Response Number 1

Name: jam
Date: February 7, 2008 at 20:14:28 Pacific
Subject: AXP-M 2400+ vs AXP 2800+

Reply: (edit)

All Bartons core XP's overclock roughly the same...they generally max out at about 2.5GHz. Your 2500+ *should* be able to run at 2.2GHz but it may require a voltage increase. As always, you need the right board, the right RAM & a decent power supply. For best performance, the CPU:RAM frequency ratio absolutely MUST be kept at 1:1! Hopefully you have DDR400 or better.
As for the 2400+ XP-M vs the 2800+, the XP-M definitely has an unlocked multiplier, the 2800+ most likely does not. If you expect to hit 2.5GHz, you're definitely gonna have to throw a hefty amount of voltage at the CPU. I ran the same 2400+ (AXMH2400FQQ4C) on an Asus A7N8X-X & also on a Shuttle AN35N Ultra & the best I could do was 2.31GHz (11 x 210MHz). I don't recall the voltage setting but I believe it was 1.725v, which is quite an increase from the stock 1.45v. I *may* have been able to go higher with more voltage, but I didn't feel it was worth the risk for another 100MHz or so.

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Response Number 2

Name: sano
Date: February 7, 2008 at 22:03:24 Pacific
Subject: AXP-M 2400+ vs AXP 2800+

Reply: (edit)

jam,
current 2500+ run at slightly over 2.04ghz(?) @ 1.85v(cpu:fsb = 1:1) on abit nf7-s rev2.0. Areo 7 copper hsf. can't go further, don't know why? psu is a 450W HEC.
Axp 2800+ default clock at around 2083MHz? So, to be on the safe side, it should be better than axp-m 2400+ right?

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Response Number 3

Name: jam
Date: February 8, 2008 at 04:56:11 Pacific
Subject: AXP-M 2400+ vs AXP 2800+

Reply: (edit)

Do you have these CPUs or are you buying them? It's really not worth investing too much in a socket A system. Remember that the socket A platform does not benefit from dual channel memory, so don't be afraid to try single channel mode to see if it helps with the overclocking.
What are you running the FSB at now? If the multi is locked at 11x, it would mean you've stalled at approx 185MHz? If you're running DDR333, that's what's holding you back. But if you have DDR400, you may wanna try thrwoing a little voltage at the motherboard chipset, if that's a BIOS option.

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Response Number 4

Name: sano
Date: February 8, 2008 at 10:09:59 Pacific
Subject: AXP-M 2400+ vs AXP 2800+

Reply: (edit)

ram is corsair pc3200 ddr400 512mb x 3pcs. FSB...11 x 186mhz.
Hmm...what's the max and safe voltage a nforce2 chipset can take?
"It's really not worth investing too much in a socket A system."
COD4 runs well on it, so i think instead of investing on a new rig, i might as well invest a little on a used cpu upgrade.
Also, are there any noticable different between 1.5gb and 2gb of ram?

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