Recent content by jmucchiello

See, that answers my question. I need to look at the chip geometry. That's the part I had forgotten (it's been years since I've upgraded a machine. Them Celerons ain't like those 486 boards I'm use to. :) ) And it explains the greater (theoretical) expense: there are more chips on the circuit board.

All that I know about the motherboard is what is available on the HP.com website. The system is a HP Pavillion 511w. The link I posted above is as technical as the details I have get. Memory: PNY 256M SDRAM Sticker: 256MB, SDR DIMM,H 32WHS PO 117299.15 Chips: DF 0334 S80032LLCTW -75A...

So it is assumed to be high denisity? Is there any way to be sure? Could the same problem occur with PC100 SDRAM?

What measurement indicates density? This is the information I have from hp: hp.com

Motherboard specs say it supports up to 512M and there are only 2 DIMM slots on the board so why wouldn't 2 256M DIMMs work/be recognized?

Actually I just got burned by this. I bought some PC133 SDRAM for a machine spec'd for PC100 SDRAM and the system doesn't recognize the DIMMs. It had a single 128M PC100 DIMM and replaced it with two 256M PC133 DIMMs and got a memory on boot. Tried the new DIMMs one at a time. Nada. Mixed the...

Great. Thanks a lot.

Then why do they still sell 1600 RAM when it usually costs more than the more current RAM? Is it just to gouge people who can't ask questions at a site like this?

If your motherboard requires DDR 1600 DIMMS can you use higher rated DIMMs (2100, 2400, etc) in it?