Mobile Athlon XP-M with 1.40 Core Voltage in Asus A7S333 (or another Board)
I'd like to run the following processor in my Asus A7S333-Board.
Mobile Athlon XP-M - Standard 35W CPU OPN ( Teilenummer ADM ) AMD Athlon AXMD1800FVQ3C Core Frequency 1533 MHZ Bus Frequenz 266 MHZ Core Voltage 1.40 Volt Processor Technology 0,13 micron Core Thoroughbred Is it possible? I think the only crucial thing is VCore voltage. I can't set the VCore voltage in the bios. So I don't know if the board recognizes the mobile CPU and delivers the 1.40 volt needed. Does anybody know? Thanks in advance Eduard Fiedler p.s. Which altenative board would work? |
edfiedler wrote:
I'd like to run the following processor in my Asus A7S333-Board. Mobile Athlon XP-M - Standard 35W CPU OPN ( Teilenummer ADM ) AMD Athlon AXMD1800FVQ3C Core Frequency 1533 MHZ Bus Frequenz 266 MHZ Core Voltage 1.40 Volt Processor Technology 0,13 micron Core Thoroughbred Is it possible? I think the only crucial thing is VCore voltage. I can't set the VCore voltage in the bios. So I don't know if the board recognizes the mobile CPU and delivers the 1.40 volt needed. Does anybody know? It probably should work. Often though mobile cpus are not correctly identified, which isn't a problem. However, the board should have capability to change multiplier, if not it _might_ only run at a 6x multiplier, happens at least with some boards (mobile xp's can change multiplier on-the-fly). (There are tools around which allow you to change the multiplier in windows, things like crystalcpuid and cpumsr, but they don't work with all chipsets.) Also, the voltage will not be correctly read by the board, since the VID coding for mobile cpus is different. 1.4V for a mobile cpu will get you 1.55V, 1.45V (I thought all mobile xp-m mainstream are 1.45V?) will get you 1.575V. At least I think that no desktop board correctly identifies mobile VID codes. Not that it wouldn't work with that voltage, but if you buy it especially for a low-power/silent system, it kinda defeats the purpose... Thanks in advance Eduard Fiedler p.s. Which altenative board would work? Generally, boards which allow undervolting are a good bet. There aren't many, though, often they only allow overvolting (especially all current asus boards). Favourite boards for mobile athlon xp-m cpus are shuttle an35n-ultra (no stupid fan on northbridge, goes down to 1.1V, very cheap), DFI Lanparty NFII Ultra B / DFI Infinity Nforce2 Ultra (same board basically, also down to 1.1V, no fan, much better equipped than the shuttle). Common choice would be abit nf7-s, but it's less than ideal for a very quiet system (needs northbridge hsf replacement, only goes down to 1.3V). I'm sure there are lots of other boards, but reviews unfortunately often don't mention if undervolting is possible. If you don't want a quiet system and can live with the higher than necessary voltage, pretty much any board with adjustable multiplier setting (and also some boards without that, but it's hard to figure out which ones...) in the bios should work. You CAN change the voltage if you really try hard though, even with boards which don't support it (bridge modding). Roland |
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