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Cyrix366 /AMD K6-2

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April 14, 2003 6:34:51 PM

I had asked this question last year but forgot the answer. I have a Compaq Presario 5304 with Cyrix 366 M-2 CPU. Someone suggested that I could upgrade the CPU by a AMD K6-2. Pleas let me know what do I need to do. Thanks

More about : cyrix366 amd

April 14, 2003 9:55:44 PM

Shitpaqs DO NOT upgrade well at all. I put a modem in one of mine and it screwed the mobo BIOS over. Check out compaqsucks.com and go get yourself a falcon.
a b à CPUs
April 15, 2003 4:52:44 PM

You need to get the documentation (often on a lable inside the system, otherwise downloadable) for your motherboard and change the multiplier and CPU core voltage. Your MII-366 most likely runs at an actual 250MHz, using 2.5x 100MHz bus. Cyrix stuck to PR numbers instead of MHz all the way to the end.

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April 22, 2003 8:26:23 PM

Can I use AMD K6-2+ 500 instead of K6-2 500?
April 22, 2003 11:03:15 PM

Contact Compaq... but here are some K6-2+ links... you will need to do your research... does your motherboard support 2.0 voltage? Does an updated bios support the cpu?

I have not seen Compaq on any list...

http://www-stud.uni-essen.de/~sw0729/amdk62plus/eindex....


http://www.aceshardware.com/Spades/read.php?article_id=...

http://trans.voila.fr/ano?anolg=65544&anourl=http://jmr...


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a b à CPUs
April 23, 2003 12:39:33 AM

Find out the supported CPU core voltage for your board. You don't need 2.0v for the K6-2+, as you can "overvolt" if necessary. I recommend the following MAX voltage levels for AMD, based on experience:

For mid-sized coolers, 2.2v on the K6-2+ (stock was 2.0v), 2.5v on the K6-2 (stock was 2.2-2.4v).

For large coolers, 2.4v on the K6-2+, 2.8v on the K6-2.

You want as close to the correct setting as possible, but most boards don't support every voltage level.


<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
a b à CPUs
April 23, 2003 12:43:25 AM

I wouldn't worry so much about voltage being 2.0v since they can handle a little more with decent cooling. I'd say BIOS support for L3 cache is more important. But even then, it should work like a standard K6-2 if on-die L2 is disabled (and L3 treated as L2).

<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
April 23, 2003 1:00:22 AM

i highly recommend getting a K62+ over a K62

even if teh + is like, 50mhz lower, get it because the ondie cache makes a huge difference. i had a K62 550 and a K62+ 500 gave me a hugee performance increase

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April 23, 2003 1:35:12 PM

Thanks for everyone's help. The MB did support 2.0v. Compaq it support up to 550mhz. But I can not find the K6-2+ at all while K6-2 is readily available.
April 23, 2003 5:03:14 PM

They are very hard to both find and look up. The cpu is kind of exotic and the + is not recognized by a lot of search engines, including pricewatch. I ordered 2 in the fall, a 550 and a 533... what was interesting is that the 533 is designed for a 133 fsb... and so far i have had trouble overclocking it past 550, but the 550 goes to 616 no problem.

I will post the site where I bought mine from when I get home today.

<font color=red><b>To reign is worth ambition though in Hell:
Better to reign in Hell, than serve in Heav'n.</b></font color=red>
John Milton, <i>Paradise Lost</i>, II 262-263
!