No. The A3000's memory is arranged in banks of 8 chips, each 4 bits wide (8x4 = 32 bits). Thus 8x 514400 (1Mx4) yield 1Mx32, equaling 4 MByte (4Mx8).
(Alternatively 514256 (256Kx4) can be used, but this is of no importance here.)
Your sets of 8x 511000 (1Mx1) result in 1Mx8 - which is nothing any Amiga could use, since it's only 8 bits wide and even an A1000 needs 16 bits.
You state:
"Die hier angebotenen Module waren in einem Amiga verbaut (ich meine auf dem Motherboard eines 3000ers), wo genau, weiss ich nicht mehr."
"The offered modules were used in an Amiga"
- definitely not - eventually in sets of 16 or 32
"(i mean on the motherboard of a 3000),"
- more definitely not, see above
"where exactly I don't know any more."
- erm, you just said it was an A3k mainboard, just two words later you don't remember??
The modules seem to have been desoldered - the A3000 carries sockets for everything but the 1st MB chip ram (DIP).
