What was your first PC's specs?

First PC or first computer. If the latter then that would be the Acorn Atom, the precursor to the BBC Micro. It had 1KB of RAM, which my dad slowly upgraded 1KB at a time as memory was expensive. Unfortunately he blew something up once he reached 7KB.

First actual PC, again technically my dad's, was an IBM PS/2 Model 50 that he acquired from work: System specs:

CPU: Intel 80286 10MHz
Memory: 640kb
Hard disc: 20MB
Floppy disc: 2x 1.44MB 3.5"
Graphics: VGA (640x480 in 16 colours or 320x200 in 256 colours)
Sound: PC Speaker
Expansion ports: 3 MCA slots, 4 ISA slots
Keyboard and mouse: PS2 (duh)
Monitor: 12" black&white VGA monitor.
OS: IBM DOS 3.something

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I mostly used it to play the original 2D Duke Nukem

First PC that was actually mine was an Amstrad PC7486slc/33. This was a particularly nasty bit of kit from Amstrad, it was actually a 386 based system with one of those Cyrix 386->486 upgrade CPUs that never quite worked right. It used to crash trying to play Heretic if you didn't run it with -debug. This is because it had a 386sx motherboard, complete with only a 16bit wide bus, but would accept a 486 instruction set that was designed for a 32bit bus.
CPU: 486slc 33MHz
RAM: 4MB (4x 1MB 30pin SIMMs)
Maximum RAM: 16MB (4x4MB)
Hard disc: 200MB
Floppy disc: 1.44MB 3.5"
Graphics: Cirrus Logic SVGA w/ 1MB video memory (max 1024x768 256 colours, 800x600 16 bit colour or 640x480 24bit colour)
Sound: Soundblaster 8bit ISA card (mono) hooked up to a guitar amp
Expansion ports: 2x ISA
Monitor: 14" Maximum res: 1024x768 @ 30hz interlaced or 800x600 @ 60hz
OS: MS DOS 6.2 + Windows 3.1

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Mostly used to play Doom :)
 
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Cant really remember the spec, I was about 12ish years old and got a hand me down from my step dad who worked for Evesham Vale at the time, i remember it had a mid range Pentium II it must have been around 1999 as he got me an early Nvidia GeForce to go in it that Christmas.
 
Tandy TRS-80 with 4kb of RAM, 32x16 screen, which you could double-up to 64x32 for graphics! running TRS-DOS then CP/M
Followed by TRS-80 Colour (just for laughs)
Followed by IBM-PC (8088) running CP/M-86
Followed by IBM-PC/AT (8086) running DOS
Followed by -80186 (8MHz) running Windows 1
...80286 (16MHz)
...80386dx (33MHz)
...80486sx (25Mhz)
...80486dx2 (66MHz) running Windows 98
...Pentium I (90MHz)
...
...AMD Slot A (700MHz) - (Windows 2K) still sits in the loft running 4 cameras!
...AMD K7-2 (2500+) (Windows XP)
...AMD Athlon 64 x2 (4400+) (Windows XP)
...AMD Phenom 9660 (Windows 7)
...Intel i7-920 (Windows 8 now)

Oops - longer list than expected (few missed out in the middle)
Switched to AMD for a while for the price/performance etc. gains
Seen no need to upgrade yet since my last change. Loaded up with plenty of memory, runs all the operating systems I need for work/play virtually
 
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