AMD K6-III

[kieran_d]

I have a AMD K6-III 400mhz and what to over clock it, and was wondering how high it would go. I am going to use a new fan that i got for a Socket A cpu, it is from cooler master and it can take socket A chips as high as a Duron 850, will this fan/heat sink do the job.

Thanks :):):):):):):):):):)

[Resqme]

I am running a K6-lll 450 on a Asus P5a board in my girlfriends computer,and the most I can get out of it is 50mhz (5X100) stable
They are nice chips but don't seem to over clock to well

[FRANK]

I've played with the K6III's for quite a while and have had good luck with them. Currently I have two of them up, a K6III350 @ 450MHz and a KL6III+ 450 @ 616MHz. I have both of these on FIC 503+ boards.

The 350 @ 450 was straight foward with an increase in the multiplier and upping the v-core to 2.3v. 128 MBs Micron PC133 RAM (real cheap the last couple months).

The 450 @ 616 is a "+" series chip, making it a little bit different. The "+" series of chips were originally intended for the mobile PC market. FIC never "officially" supported this series of chip on their desktop motherboards, but after they gained in popularity, FIC released a BETA version of a BIOS upgrade (no. "JE4330"), that is necessary for these CPU's to be recognized properly. Beyond that I also increased the FSB to 112MHz, increased the multiplier and upped the voltage to 2.4v (on the "+" chips default is 2.0v) as well as using a left over Global Win FOP 32 from a DURON project. a
And once again, 128MBs PC133 Micron RAM.

Even though I was able to wring out a respectable 37% increase in speed with the 450+, You have to weigh the cost effectiveness of spending any money on this aging platform. The older T-BIRDS and DURONS are already priced less than their K6 counterparts. Along with the reported success of clocking virtually any socket "A" CPU at least 200MHz over default and the abundance of socket "A" motherboards with on-board sound available in the sub $80.00 range, making a motherboard / CPU upgrade an attractive option.

One other note, on the later and faster K6 CPU's, AMD changed the chip to recognize the 2X multiplier as 6X, although in my experience, it had been reported as 560 (or something like that) during the POST, tests will confirm that it is actually running at 600MHz.