Author: Aaron Gordon
Date: 18:03:10 09/03/01
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On September 03, 2001 at 18:51:28, Vincent Diepeveen wrote: >On September 03, 2001 at 13:58:51, Aaron Gordon wrote: > >>Cooling isn't much of a problem. The SK6 might be considered expensive by some >>people but well worth it as it's around 0.14C/W (about as good as an aluminium >>liquid cooler). Those are available at http://www.thermalright.com/sk6.htm >>As for a good dual Athlon board the Tyan Tiger is suppose to be superb and only >>a mere $209. http://www.pricewatch.com has all the cheapest vendors. > >Wow that looks like a good cooler! > >and i see it's lucky not so big because only a small fan fits on to the >board (its height may be huge of course). > >>Also if you're going to do just chess with it I highly suggest a Thunderbird >>1.4GHz. They have the AYHJA core stepping and will do 1.6GHz (sometimes 1.7)with > >tyan motherboards can't be overclocked, no way, processor speed >is automatically detected :) > >>relative ease and possibly no voltage increase (although if you have the SK6 >>running 1.85v vcore will NOT be a problem). The AYHJA also enjoy's the same 20% >>power reduction as the palomino BUT it doesn't have SSE or the enhanced prefetch >>that palomino does. Slap in a couple of 256mb sticks of crucial PC2100 (or if >>you can afford it PC2400 DDR, 150fsb (300mhz DDR clock)). Also an enermax 650 >>watt ATX power supply will definately help. > >You need registered DDR ram, and again, you can't overclock the >dual motherboard anyway, especially not the memory. Note i doubt >there is registered memory available that goes above PC2100 :) > >>Also about the companies saying that the Thunderbird won't work well SMP, thats >>garbage. Of course they're going to tell you that. They want you to buy the more >>expensive Athlon MP/Palomino. I hear Thunderbird's and even Duron's work >>flawlessly in SMP operation. > >Yeah it seems they want companies to buy the expensive MP/palomino but >the new steppings tbird work great dual for computerchess! > >>Anyway if anyone wants to know how to help make their system more stable >>overclocking wise or needs advice on cooling just post a message. I've been >>doing this for a good 12 years now. I pride myself on building extremely fast, >>extremely cheap systems. Running a $75 CPU (Thunderbird 1GHz, AXIA stepping) at >>1.76GHz with a $100 liquid cooler (and heavily modified Abit KT7a). Last system >>was a Celeron-2 566MHz at 1202MHz at negative 38 degree's celsius. If thats not >>value + performance I don't know what is. :) > >>Good luck w/ the dual AMD box's. > >Nowadays overclocking is a very risky business with those huge number >of watts you need to suck away from the processor in order to not let it >go wild. > >I can't advice anyone to overclock a palomino, note that the tyan mobo >is not exactly a mobo to try all this. > >Man where can i buy those excellent heatsinks in europe? > >Those delta fans i already have (but wrong heatsink). You can still overclock. You can manually set the multiplier and voltage via cutting and connecting the various bridges on the cpu. All you need is a steady hand, a razor and a silver conductive pen and you're set. There's a list of the settings somewhere but I don't have the URL at the moment. About the other heatsinks, you can get one thats quite good called the Millennium Glaciator out of the USA. It's priced the same (or a little cheaper) and it's very close to the performance of the SK6. http://www.millennium-thermal.com/start.htm Also about the high end delta fans w/ 3 pin connectors.. you can use a needle to remove the +12v and ground lines (leaving the fan rpm line) and stuff them into the 4 pin molex connectors. Works quite well. You can even overclock the fans by running the ground wire into the power supply's negative 5 volt line. I don't recommend this for the higher end delta fans as they would be up near 10,000 rpms and would be VERY loud. Also it would shorten it's life by a little bit. If you do plan on overclocking your fan (or adding peltiers, whatnot) if you put a lot of load on the PSU's 12v rail (if you have a high end tbird don't do this, it needs all the amps it can get) put on a 5 ohm 20-25 watt resistor on the +5 & ground. It will pull 1 amp off the 5v rail and (not sure how, but it works) increase the 12v rail back up to 12v (or very close). This especially helps when using peltiers because when you put a peltier on the 12v rail it usually droops down to 10v or so. Also if you have a weak power supply and a high wattage CPU your 5v rail will tend to droop down under full cpu load. This may happen if you're using a sub-par 300 watt power supply with dual overclocked tbird/palomino's. Once the 5v rail gets below 4.7v you tend to see instability issues. One way to get around that is to run the 5v rail on the PSU directly to the middle pins on all of the 5 volt mosfets on the motherboard (each mosfet usually helps the 5v rail 0.1v). If you don't have experience with soldering or do not know how to test which mosfets are what voltage via a multimeter I don't suggest you do this modification.
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