hi,
A laymans understanding of spikes and brownouts.
coils and motors, and electric appareil in general, where a current is flowing thru, well, the current want to KEEP flowing.
when the circuit breaker (switch) opens, this manifests itself by a spark
(where coils are involved, the spark can be very HIGH voltage)
ref; sparkplugs in mopeds etc, where the spark was formed by opening the contact points.
when that happens, the circuit the thing is on gets a spike
brownouts/powerdips with low voltage
I was told that in motors, extended use under too LOW voltage can cause overheating because the amp climbs.
when a heavy machine is powering up, the nearby circuitry may suffer a dip
in puters, the machine may go into suspend, and not be able to get out because the +5Vsb ain't up to it, or the flipflop did not flop
(its a thing I do not understand all too well. I am a mechanic, no electronics guy)
oh, believe it or not, but I did add a bit of my links to megabrain's article :-)
erm, I had a few more intel links
Once one learns to navigate intel's site, you find TONS of info.
the links to cpuid and the german CT tools are cool
CT magazine has great tools https://discussions.virtualdr.com/
since this is about helping people, I can just as well put some more handy links and tips in here.
Hmmm, I feel wrung dry https://discussions.virtualdr.com/
Oh, I hear Jimmy Hendrixx is on the radio, perks me UP
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VIDEOCARD DETECT
If you cannot identify your video card, you can run the following without opening the case to get an idea of the manufacturer and make:
1. From a DOS prompt, Win 3.x, Win9x, WinNT, or Win2K command prompt type DEBUG and press Enter.
2. A single dash will appear at which point type DC000:35 and then press Enter (DC000:50 may also work for newer cards).
3. You may need to type D at the second dash and press Enter for all of the information to appear.
You can type D more than once to see more info appear.
4. Q to exit
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MEMORY TESTERS
unlimitedhardware
arstechnica
memorykings
simmtester
chipmunk
dimm_id.zip
vml Download
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more intel links
Processor codes http://developer.intel.com/design/pc...sors/index.htm
Intel(R) Celeron(TM) Processor Specification Update: http://support.intel.com/design/cele...pdt/243748.htm
Pentium II Processor Specification Update: http://support.intel.com/design/pent...pdt/243337.htm
Pentium® II Processor Sspec Information http://www.intel.com/support/processors/sspec/p2p.htm
Pentium® III Processor Sspec Information http://support.intel.com/support/pro.../sspec/p3p.htm
Pentium(R) III Processor Specification Update, http://support.intel.com/design/pent...pdt/244453.htm
processor table http://support.intel.com/design/Pent...dbref/#product
CPU model number; The Intel PIII product codes are located here: http://support.intel.com/support/pro...iumiii/poc.htm
F=100 fsb, fc-pga
C=133 fsb, fc-pga
H=100 fsb, slot 1
U=133 fsb, slot 1
What if you are equipped with PC100 sdram modules.
if you upgrade the CPU to an EB, you would need other sticks of ram, or need be able to run sdram-clock at clock 133 minus 33 or at four/fifths (some boards can do this...)
you gotta check on this before you sell your old cpu and fork out for a new one.
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how do i fit a heatsink onto the MOBO? I have some problem pressing down the metal lever and the worst thing is that while I am doing it, all the thermal paste stick onto the Pentium.. Is it alright?
You only need apply a THIN layer. http://support.intel.com/support/pro...eleron/s2s.htm
http://developer.intel.com/design/Qu...iii/FC-PGA.pdf
when I first needed do this sorta job, I came up with an idea for a cheap and handy tool.
Salvage an old blunt broadblade fine srewdriver, and put a file to it to make a nice rectangular indentation into the head. It won't easily slip off when you use it as a lever to get clips off the socket
I can recommend this to anyone. you need still be careful, but won't scratch the mobo as easily when the tip don't slip off as easily as it did before you made this indent in the tip.
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ftp://download.intel.com/design/motherbd/
ftp://download.intel.com/design/motherbd/oem/70258701.pdf
ftp://download.intel.nl/support/processors/manuals/fcpgaman1.pdf
http://www.intel.com/support/motherb...erboards.htm#3
http://www.intel.com/support/motherboards/bios.htm
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CPU COOLING
When load on CPU increases, and temperature climbs, and after a while sound/video starts to stutter.….
And hell, It may even reboot right into bios…..
Well, if any of that happens, I suggest you look at CPU cooling.
about heat problems.
Just remember that when I mention thermal interface, I mean the connecting surfaces of cooler and CPU. The coolerplate sometimes does not fully connect, which you can see when you hold it against light and look between cooler and cpu.
If you need to pull out the CPU assembly to look into this matter, be sure to remove POWERCORD. If a bunch of ribbon/cables are blocking air from the CPU fan, try moving them out of harms way. Adding a second system fan can do a lot of good. Used wisely, it creates a cross flow thru the case, and graphics card and CPU will benefit.
One way of deducing if the cooler is properly attached and gets proper thermal connection is quite simple. If you boot into bios and look at CPU temp, it should stay below 36 to 38C.
Then you boot into the OS and play a demanding game for a while, or do some heavy number cruching, Kill the app, and immediately shut off/reboot into bios where you again check CPU temp.
If you see temps of over 55C, and not dropping rapidly to below 40C, you may have to look at the thermal interface.
apply a thin film of thermal compound, and when you put the coolerplate back on you instantly feel if the connect is good as it kinda sticks. If not, you may have some wrong type of hardware installed in the assembly (been known to happen) preventing the surfaces to fully connect.
As an aside, I am kinda annoyed when I see OEM Flipchips come with stickers on the chip. for example, one paper sticker (covering half o/t chip and applied over the smaller sticker) and one small white plasticky sticker with SN (Bang in centre of chip, covering about one third). The smaller one says warranty void if removed, but they'd sure interfere with cooling since the chip and coolerplate surfaces would not completely connect. When I installed them OEMs, I peeled them clean and put them stickers where they do no harm. My vendor agrees that their placement is quite stupid, and agreed to my moving them. (thus I keep warranty)
It's quite another story on INTEL Boxed solutions, because the tape seen on the cooler is a thermal pad. (the intel boxed assemblies' warranty is MUCH better)
Also, avoid slotket solutions with OEM chips....
http://support.intel.com/support/pro...ii/thermal.htm
ftp://download.intel.nl/support/processors/manuals/fcpgaman1.pdf
ftp://download.intel.nl/design/pentiumiii/applnots/24508701.pdf
http://www.intel.com/support/motherboards/bios.htm
http://www.intel.com/pressroom/kits/...reffam.htm#III
archive bioses ftp://download.intel.com/design/motherbd/
motherboard list http://www.intel.com/support/motherb...erboards.htm#3
about multiprocessor platforms
one word of advice, get the same stepping CPU
or CPU with compatible stepping (same is best) I am saying this because same speed CPU do not nessecarily have same stepping. ask advice at intel or DL this specification table
ftp://download.intel.com/design/PentiumIII/specupdt/24445322.pdf
you ought to be able to find these spec tables for Xeon too
http://developer.intel.com/design/pe...xeon/prodbref/
XEON specs at
ftp://download.intel.com/design/PentiumIII/xeon/specupdt/24446021.pdf
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We can only learn when you tell us what worked. So Please bookmark your topic, and let us know?
You'll help someone with a similar problem when you do.
Kind regards, Jaak
