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300 k62 booting at 366 with 2.4 vcore

New Message300 k62 booting at 366 with 2.4 vcore (modified 0 times) parasyght
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I'm typing this msg on my v3 w/ 300k62 with a vcore 2.4 that boots at 366. I remember reading post stating that for some reason the i wont boot over 300mhz, but this seems to be the exception. I think i have the fsb at 75. My mbprobe reads 126f for mobo, and 116f for the cpu. Im also using the internet thoutgh my acer usb network acessin my dsl. I streamed a cartoon the other day and no problems. One thing that is odd, my modem didnt recognize. I would like to figure that out.
05-20-2001 22:06:59

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) Programmer
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It was with a k62+ or k6III+ that it wasn't booting at over 300..
05-22-2001 04:50:35

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) parasyght
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standard k62 300 is booting at 366. I have an afk 333 and a 450 k62+, but those machines are in pieces right now.
05-22-2001 10:45:08

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) Ragnar
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I have a question that is related to this. I have what is marked on the chip as an amd k6-2+ 450 mhz. I have my I-opener hardwired to boot at 300 mhz. I have tries to use kclk6 to warp to 400~450. But no go. Motherboard programs identify my processor as an amd k6-III 450 (no +). I am assuming that this is why the kclk6 program will not work. Will installing sw1 allow me to boot at higher speeds?
06-07-2001 09:46:46

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) BadFlash
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It should, but you won't know until you try. I have never tried a K6III, but a K62 boot at 450 with SW1 set correctly, it just draws too much power to last. I'm betting the K6III is the same.
06-07-2001 10:13:08

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) BadFlash
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It should, but you won't know until you try. I have never tried a K6III, but a K62 boot at 450 with SW1 set correctly, it just draws too much power to last. I'm betting the K6III is the same.
06-07-2001 10:13:13

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) thecounts
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parasyght - you said vcore is at 2.4 - isn't that the "stock" vcore for a v3/v4 that came with the RISE 266 chip? This sounds to me like the "no solder hack to get to 300+ mhz" - the holy grail of I/O for those who've never done any SMD soldering/desoldering. This sounds really painless for those with a v4a (frequency and multiplier switches, but no voltage switch). Did you have to do any other hacks, or was it just a drop-in and go type of deal? How does it compare (performance) to one with a K6III with all that on-board cache? or some reason I thought the K6II-300 was a 2.2v chip...........
06-20-2001 23:12:05

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) parasyght
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I did the cpu vcore hack and dropping resistor, along with adding a multplier switch to the fsb pads. You may want to try and just move the 0ohm resistors to enable dual plane vltg and see if it works. My bios reports 2.4. Good luck.
06-22-2001 11:49:33

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) thecounts
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parasyght - I understand now that you had to do some hacking and soldering on your v3 because the stock unit doesn't have the split voltage. However it seems that I recall reading somewhere that the v4a, v4b, and v5 - all the models that come with the Rise 266 CPU installed - already have a split voltage, and that the vcore for the RISE chip models is already set to 2.4v - the same as what you're seeing reported in your BIOS.

My questions then are;
1) Do you know if my recollections are correct about the stock vcore for the Rise 266 CPU versions?
2) Have you actually measured the vcore after your mods, or are you relying on what the BIOS is reporting?
3) Do you know how the performance of the K6II-300, overclocked to 366, compares to the K6III-333 running at 333, but having all of its extra on-chip cache? Have you run any benchmarks?
4) Are you having any heat-related problems? The K6-II is a 2.2 vcore chip, (as is the K6III-333) and a .2v "bump" up to 2.4vcore isn't that much (9%) I would expect it to create some extra heat - especially since you're overclocking it by 22% (you must have gotten a REALLY good one - most AMDs will only tolerate about a 10-15% overclock in my experience). What are you using for cooling, a lasagna?
5) You mentioned the "dropping resistor" - are you talking about putting a current limiting resistor on Q16, or a vcore voltage dropping resistor?
6) How about power problems? Did you have to install the 0.12 ohm power resistor?

Basically if you've verified that you are truly running at a 2.4vcore, and aren't having heat problems, without doing the Q16 re-work, or the power resistor mod, then it sounds like it may be possible to do a "drop in and go" with the K6II or k6III processors on the v4a, v4b, and v5 I/Os.

06-22-2001 21:15:24

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) thecounts
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Hey parasyght, you still out there?!? I thought we had a dialog goin' here, where ya' been? I was hopin' to have heard back from you by now..............
06-30-2001 21:55:58

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) parasyght
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Sorry counts, my io's have been collecting dust. Ive been working more hours at work, and im working on turning a laptop screen into a regular computer monitor. I may have time to check it out this week.
07-07-2001 19:33:27

New MessageRE:300 k62 booting at 366 with 2.4 vcore (modified 0 times) Linuxguru
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thecounts: The stock V4s and V5 with the Rise MP6 CPU are set for either 2.6v or 2.8v, which is too high for any of the K6-2/K6-III family CPUs. Some of the early K6-2s probably ran at 2.4v (parasyght may be using one of these), but none of the V3/V4/V5 units can be set to 2.4v without some soldering.

If I recollect, the 2.4v K6-2 ran a little hot, so there may be cooling problems. But YMMV.

07-07-2001 22:16:41

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