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Pastimes : Dream Machine ( Build your own PC ) -- Ignore unavailable to you. Want to Upgrade?

To: Steven Bowen who wrote (5667)	1/29/1999 2:16:00 PM
From: Spots	Read Replies (1) \| Respond to of 14778

>> Overclocking assembled computer Assembled computer isn't a bad word here. Makes perfect sense for many people; we're here to discuss whatever is of interest. You will probably have barriers to overclocking an assembled computer, such as 1. Motherboard makes it difficult or impossible. Example: The Celeron 300A is clock-locked at 4.5, meaning it always runs at 4.5 times the motherboard speed (technically the frontside bus speed). Standard speeds are 66mhz and 100mz. The 300A is supposed to run at 66mhz according to intel (66mhz4.5 = 300mhz), and it has pin-outs that tell the motherboard to run it only at 66. Some motherboards will ignore the pinouts and let you set 100mhz, at which point you've overclocked the Celeron to 450 (1004.5). Others will not allow it but there's a way to strap the pins to defeat the 66mhz signal to the motherboard. Not for someone who is buying a packaged system, probably <g>. Finally, other motherboards won't run at 100mhz at all. 2. Memory. If you buy a 66mhz package, the memory will probably not be rated for 100 mhz. 3. Supply. The 300A is (retail) or is about to be (OEM) discontinued. 4. Stability. There's no guarantee you can overclock a 300A. Some you can, some you can't. It's not a flaw if you can't, so you can't send it back. There are places that will build a complete system with an overclocked Celeron, probably your only realistic bet. Supply is the problem now, though. Checkout minotaur.com, pcnut.com, and (I think) clifford.com. Or wait a while. Probably there will be new opportunities in the near future. You could end up with a 400mhz overclocked to 600 <g>.