You're making me drool nairb! I need a Socket 3 system and a Pentium 66 (Socket 4) for my museum of computers and they're so hard to find!

I remember my Pentium MMX 233MHz, voodoo 2 video card. Died many years ago after a moving to a new place. Also, upgrading from CL3 to CL2 memory increased my credits. Ah, those were the days....

Well as it happends I do have a couple of pentium 66. A SX837 which has the FDIV bug. And a SX950 which doesn't have FDIV bug. Yes the pentium 66 are rare. So are the pentium 50's. And the socket 4 boards.
I'm not sure if its possible to crunch with any thing less than a pentium 60 with 128m of edo (not fast page) ram.
My fav machine is a Intel A80386DX-25 with a cyrix fasmath co-processor + 8meg sipps. Runs win 3.11 and is networked to the proxyserver. I put Opera ver 1 on the machine and it is possible to actually use the internet Sloooowly. Wont crunch a thing tho.
Yes .... the Quad core machines rule. Wish I had a bunch.

Nairb

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I have a 486DX 33Mhz with 4 MB RAM and 250 MB HDD, from 1993.
She had 5,25 and 3,5 floppy drives, but both of them are dead now.
Not turned on for 4 years at least. Cannibalized for some cables.

Any idea how to get some work to her? :D

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The Frozen 920 is showing 780 watts or so on the killawatt
And that is not counting the compressor.......

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"Freedom is just Chaos, with better lighting." Alan Dean Foster

I have an very old ZX81 in shed its only got 2kb mem and data load by cassette tape

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I have an very old ZX81 in shed its only got 2kb mem and data load by cassette tape

Was my first Contact in '79 with...uhm...Computers. ;-) Has a Slot where
you can connect Expansion Moduls like Memory Enhancement (16kb) or Graphic Modul (256x192 Pixel ?).

LOL That were the good old Times. :-)

Helli

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A loooong time ago: First Credits after SETI@home Restart

Ah the ZX-81.
Designed by my old boss at Amino , Jim Westwood back in his Sinclair days (plus the black watch small tv and many others).

Some of the stories he used to tell of the 'good old days' were classics.

He was even given a small cameo part in the BBC tv production of the "Micro Men", in the back of one of the scenes in a WHSmiths shop.

Made us all laugh.

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its was fun try to make programs with less memory than some sound card have but i gave up on computers until about a year ago when i realize the pc is easy to use now

@nairb

The FDIV bug ones would be cool to have. I would like two; an original and one upgraded with the Pentium 120MHz Overdrive for the museum. I need the Socket 3 so I can put my Intel486 to Pentium Overdrive (Pentium 83MHz, one of Intel's rare unusual clock speeds) to use.

@platium

Very nice. Unfortunately due to costs and my own fascination with the x86 market, I've limited my museum to x86 machines only. There are a few other "rules" to keep things at a minimum too (as I do not want to buy every clock speed or variation out there). Last count I have 39 machines for this museum, most of which can be found here (except the 286 and two 386s which aren't listed).

I have an old 486 25mhz machine laying around somewhere. Swapped the jumper and ran it at 33mhz! It had Win 3.1 on it, networked with an ISA ethernet card. I want to say the HDD was around 310mb? I don't even remember what, if anything I did with the machine when I used it. I put a 4x Intel Overdrive on it and loaded Win95. It ran, although slowly. It then became my MP3 player hooked up to my stereo system. Might have to find it and put it back together and get BOINC on it just for fun.

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I have an Olivetti-AT&T Unix PC with 512 KB RAM and 40 MB disk. It runs UNIX System V on a Motorola 68010 micro at 10 MHz. I have compiled the GNU C 1.19 on it and have also a binary copy of LOGO. Floppy is 300 KB 5.1/4 inch. It is still working.
Tullio

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Now, I do have a (barely) working dual CPU AMD Athlon MP 1.2GHz system. It's setting by the door next time I make it to the recycling center. Up for grabs if anyone wants it....

I have an old 486 25mhz machine laying around somewhere. Swapped the jumper and ran it at 33mhz! It had Win 3.1 on it, networked with an ISA ethernet card. I want to say the HDD was around 310mb? I don't even remember what, if anything I did with the machine when I used it. I put a 4x Intel Overdrive on it and loaded Win95. It ran, although slowly. It then became my MP3 player hooked up to my stereo system. Might have to find it and put it back together and get BOINC on it just for fun.

That's exactly what I did to my 486, which happens to be the first computer I was able to afford on my own. It was a refurbished Packard Bell 400MT mini-tower computer that had an Intel 486SX 25MHz chip on the motherboard with an upgrade socket (sometimes called Socket 2) to put in a 487 math coprocessor* or a DX2-50/DX2-66 chip. It had no L2 cache on the motherboard and 2MB of RAM soldered on the motherboard with 4 30pin SIMMs (each 30pin SIMM was an 8bit connection, so all 4 slots had to be filled to equal the 486's 32bit data width). It also did not have a CD-ROM drive or sound card when I first bought it. I did have a 1.44MB and 1.2MB floppy in there along with the 130MB IDE hard drive. The retailer selling the refurbished model gave me a copy of IBM's PC DOS 6.0 full version; I had to buy Windows 3.1 myself.

I had originally bought the 486DX2 50MHz chip for it and was blown away by the higher speeds. At that point in my life, I was like a lot of overclockers here that wanted every bit of speed I could get. So I waited and saved my money until I could afford a brand new Intel486DX/4 75MHz upgrade chip which my system supported nicely. Not being enough, I decided to upgrade to the DX/4 100MHz chip which required a 33MHz bus speed (the DX/4 75 and DX/2 50 both used a 25MHz speed), so I switched the jumpers on my motherboard to the 33MHz speed using the instruction manual that came with the computer.

The last upgrades I did for that machine was to buy it a Kingston TurboChip which uses the AMD Am5x86DX/5 133MHz CPU. I had long previously bought 256KB of L2 cache, 16MB of RAM (added to the 2MB onboard for a grand total of 18MB), a 6x CD-ROM drive, a really nice Logitech SoundMan Wave 16bit sound card (had some excellent software that came with it too), and an ATi Mach64 2MB DRAM ISA video card. And I spent nearly $300 on the 850MB hard drive! LOL

I'll always remember my first in all it's sexy detail. :)


(* The 487 math coprocessor was nothing more than a 486DX chip that disabled the main processor and took over all processing functions. The crazy thing is that the 487 was selling for as much as $800 8 years after it's release! Far cheaper just to buy the DX/4 or the Kingston TurboChip which came with the math coprocessor built-in for around $200-250 and get the speed increase as well.)

Never managed to crunch seti with anything less than a pentium 60. Would be well impressed if somebody managed to do a w/u with an intel DX4 (skt 3) or even a Gainbery Maximiser.
I bet anything slower than a pentium 60 might not make the deadlines.
My dual pent 75's have about 240hrs to go to completion (10 days) they will make the deadline by almost 2 days. Thats 1024 hrs in total (42 days).
thats 42 days to do 2 w/u's.

How many dual pent 75 machines would I need to equal the rac of a quad core machine.
But they landed on the moon with less power than a DX4.

Nairb

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Despite the 486 lacking the Pentium's dual-pipeline architecture, the i486DX/4 100MHz is supposed to be as powerful as a Pentium 75MHz CPU, depending on the software used.

I would bet a DX/4 100 could complete a workunit on time. The bigger problem would be finding a machine that has enough free RAM to run a supported Operating System and the BOINC/SETI software. My Am5x86DX/5 133MHz only has 18MB, not even enough to run SETI at minimum. Windows 95/98 runs like crap on it so it currently has PC DOS 7.0 and Windows for Workgroups 3.11 complete with Microsoft's TCP/IP stack for Windows 3.11 and a 16bit Internet Explorer version 5.0. Most pages won't load properly, and they take forever despite having a rare 100Mb 3COM 3C515 ISA NIC. Obviously the CPU is the limiting factor here. :)

If there was a way to get my hands on a 16bit SETI command line executable that was able to be run under Windows 3.1x, I'd be more than willing to give it a try. I don't have the DOS NIC drivers loaded because they take up too much conventional memory!

We are heading the wrong way, no need for more mem, we need more genius programmers like these guys.

MenuetOS

MenuetOS is an Operating System in development for the PC written entirely in 32/64 bit assembly language.

and all of this on a _floppy_! :)

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i have an calculator can i crunch a work unit manually?
how does a person fast Fourier transform?
if i cool myself in liquid nitrogen can i overclock myself to the limit?
will i save on the power bill if i crunch work units by hand, would i be considered "green" by the EPA and would i then be allowed to wear this :

on my forehead ??

Yeah, but if you start crunching manually, then 1) you'll get great abs, and 2) your carbon footprint will get bigger. :)

i have an calculator can i crunch a work unit manually?

:)

By my estimate, if you had started manually crunching a mid-range AR MB workunit (.43 AR and ~31.6 trillion flops) right after the dinosaurs disappeared 60+ million years ago, you could now be crunching your 2nd workunit. That's if you had averaged completing one flop/min, every minute since then.

Martin