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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Craig Freeman who wrote (68773)	8/14/1999 4:18:00 AM
From: Bill Jackson	Respond to of 1579297

Craig, Have you ever seen the power needed by the older full height 5.25" hard drives at 5400 RPM? They used to take a few seconds to runup. Modern hard drives, even the 7200 rpm ones take a lot less power.A 6.8G 7200 rpm barracuda uses 2.2Am at startup and uses 12 watts in active mode and an older 5.25 one could take 10 amps at start and run with 60 watts, toasters is the word we used. If the power supply is a true 300 watt and not a Taiwan 300Watt(48 watt true) it should be able to run 2 modern drives as well as the Athlon. A server with a dozen hard drives is another matter and will need one with enhanced 12 volt power. Bill

To: Craig Freeman who wrote (68773)	8/14/1999 1:38:00 PM
From: Ali Chen	Read Replies (1) \| Respond to of 1579297

Craig Freeman, <it seems that I was right on about not using cheapo P/S units with Athlon CPUs. One can only wonder if AMD ...> Dear President Freeman, Your recent posts about "Capacitors capable of buffering 30A per second" and possible problems with "couple of 7,200rpm drives" show that you have no remote idea on what are you talking about. If "a couple of 7,200 drives" will exceed a power supply capabilities and it shuts down due to usual overcurrent protection, any CPU that "goes into orbit", as you managed to express, including Intel brands or any other, will experience "soft error". Professional systems integrators are well aware of the problem of fair load distribution including requirement of 25W for each PCI slot, and only newbie like yourself could raise such a stupid question. For your education, when a drive performs seek operations, the main power for actuators goes from 12V power source; at the same time none of the current CPU in x86 computers uses this voltage for its operation. For your additional info, the seek operations are not the most power consuming ones for disk drives, the spin-up is. On another note, the combination of "cheapo P/S" with "couple of 7,200+RPM drives" is a nonsense in the first place. No serious PC maker would consider this combination, but you are very welcome to experiment at your own expense as long as you wish. In conclusion, I strongly suggest you to reduce you aggressive attitude on these matters and stick to area of your real expertise (if any).