K7S5A up finally!
Kyle Brant
which should be 180watt capability or better for the newer AMD socketA
CPUs.
--
Best regards,
Kyle
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"Carleton Wu" <carle...@worldnet.att.net> wrote in message
news:svm41u4otsk3ip936...@4ax.com...
| Oh yeah... CMOS checksum error. Switched the KTS battery for my
old
| Maxell from my K7M, and no more errors so far...
|
| CW
Mac
300 watt psus from three different manufacturers and all three have
different AMP ratings for the various rails. Only one of them, the Antec
PP303X will run my 1.2 T-Bird at 1.4 on my Asus A7V133 or 1.35 on my K7S5A.
What is really strange is that the two that WON'T run the T-Bird are rated
by AMD for up to 1.4 Athlons while the one that DOES is only rated for up to
900MHz Athlons. It's easy to understand why though when you pick them up.
The Antec weighs more than the other two combined showing that it has better
components inside. And before you ask, the other two work fine up to
1.1gig. Checking the various rails shows the Antec is rated for less
current on the +5 and +3.3 volt rails than either of the others, but when
you fire them up the Antec is the only one that will provide +5 volt above
4.9v under load even at 1.4GHz. The other two provide 4.8v or less at
1.1gig. Sure the Antec costs more than the other two, but it actually works
like it's supposed to.
On a side note, checking Enermax psus of up to 431 watts shows that they
don't supply enough +5v under load above 1gig on either of my K7S5As, and
they are AMD approved for well beyond that. What does that prove? Two
things. First, just because it's AMD approved doesn't mean squat. Second,
it isn't just the PSU that can be at fault here. Some motherboards have
their voltage regulators set differently and when used in conjunction with
certain psus will not provide enough current on the +5volt rail through the
board even though the psu does put out enough voltage on that rail. As
proof, those same Enermax psus that provided 4.85volts at 1GHz on K7S5As
provided 4.95 to 5.05 volts on an Asus A7V133 at 1.4GHz. Also, when used to
power an Epox MVP3G2 with an AMD K6-2/400 or a Pentium 100MHz they only
provided 4.85volts, so it isn't just the K7S5As that have this problem, but
several other boards as well, especially Epox boards.
Mac
>
> Summary: hard to believe a 3yo previously approved PSU for the
> original Athlon NOT being good for AthlonXP/K7S5A, despite being equal
> wattage.
>
> Recommendation: if your board is acting flaky and your PSU is NOT new
> issue, try the CompUSA PSU. It's cheap and it works!!!
>
> Thanks to all the input I got earlier...
>
> CW
tonys
would not run run at 133FBS once the processor got above 1.2 ghz....I used
the O/C bios available and ran the processor at 124/124.....one day I was
trying another bios...and it died after what looked it a good bios
update.... I ordered a new bios from www.badflash.com they flashed the
chip with the lastest available bios at the time....The motherboard has not
missed a beat since then....now running a 1.2 ghz processor at 133/133 with
generic powersupply. I have even tried a 1.4 ghz and 1600+ XP processor .
Both worked fine....That motherboard also used to have the cold boot problem
and losing of its CMOS setting...
The 2 Ver 2 motherboards would not run a processor faster than a 1.2 ghz @
133/133 also.....had the cold boot problem and lost the CMOS setting.....i
updated the bios to the bios that was modified at www.ocworkbench.com
the bios is based on the PC Chip 830LMR motherboard....since that
update.....both motherboard have worked perfect. One of them is now running
a 1.4 ghz athlon at 133/133 FSB.....then other is being used by the kids
with a 950 Athlon.... both are using generic powersupplies..........
tony
"Carleton Wu" <carle...@worldnet.att.net> wrote in message
news:b6m41uk47uuch3q3m...@4ax.com...
> Posted earlier about my new K7S5A Rev.7 (received 3 days ago from
> Newegg) acting flaky. It would not always boot with video, sometimes
> froze before bios, and upon loading windows would always end up with
> BSOD.
>
> Solution: CompUSA 300W PSU $39.95
> Went there thinking I would have to shell out $100 for an Antec 400W
> but noticed on their house brand PSU's that they specifically
> mentioned P4/Athlon support. Also, it mentions ATX 2.03 and ATX 12V
> v.1.1 compatibility which i didn't see with my 3 yo. FSP 300W PSU that
> I replaced.
>
> Booted up smoothly to Bios the first time and I set basic stuff, even
> downgrading the bus to 100/100 for safety. After I was satisfied that
> every boot up to Bios went smoothly, I booted up to floppy and flashed
> the October bios to the new November bios. AFter that, let WinXP boot
> but it gave BSOD,/stop error--did this even when trying to load safety
> mode. I thought before that this was a board stability problem but
> given that it now goes to bios without problem, I decided to boot from
> XP CDROM and repair the existing WinXP installation (carried over from
> my Athlon 700 system). It worked. Components were re-installed and
> everything was back to were it was!!! Switched the bus back to
> 133/133 and everything is still great.
Kyle Brant
earlier, the capability to deliver up to 180W of 5V/3.3V combined.
Much of the problem is the stability and quality or circuit design
(regulation) within the PS, dips or surges or spikes cause problems
for the mobo regulators. My Powmax is rated up to 1.1 gig, but it
weighs in at 4.5 pounds and has no problem providing power for my
k7s5a and 1.4G TBird. BTW, I have an Enermax 350W sitting around also
(cause someone deemed it necessary to fix the memtest86 errors, haha,
Enermax made no difference).
--
Best regards,
Kyle
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"Mac" <nos...@nospam.com> wrote in message
news:u15coqp...@corp.supernews.com...
a
--io333
Hugh Pearce
My 300W macron is running my k7s5a 1Gaxia @1.333
with ge256se 40GB 5400 ok with no problems yet all voltages (the important
ones ) are within 1 % of spec
had it going with t/bird 900 and 250W Fortron Source as well
Hugh