One was pulled out of a 6100 I just got because I noticed something different. I dug through my pile 'o SIMMs and found 2 other boards all bearing the same Apple part number 341-0741. But all 3 are different designs. The 2 with 2 chips on each sides seems common with the stickered part number (bottom stick) being older and printed number (middle stick) being newer but what's with the top one featuring 4 square packages on each sides? The pin notches are exactly the same so it seems to be designed for first generation PowerMac
I also found this one, same pin notching as the known Apple x100 ROM SIMMs but it has different number 341-0757 and I couldn't find out via Google if it's from specific model or what.
What idiot cuts the memory stick to make it fit a different notch? If it doesn't fit, it's for a reason. I doubt it ever worked when I pulled out of a dead 8600 and put it aside and forgot about it. I didn't even notice it until I was comparing the notches to sort out the PCxx from DDR and DDR2 modules I have in my pile of parts. I thought it might have been an ECC originally but it has only 8 chips on one side and none on back so it can't be ECC (ECC usually have # of chips divisible by 3)
One was pulled out of a 6100 I just got because I noticed something different. I dug through my pile 'o SIMMs and found 2 other boards all bearing the same Apple part number 341-0741. But all 3 are different designs. The 2 with 2 chips on each sides seems common with the stickered part number (bottom stick) being older and printed number (middle stick) being newer but what's with the top one featuring 4 square packages on each sides? The pin notches are exactly the same so it seems to be designed for first generation PowerMac
These look like ROM SIMMs. The top one on both is definitely a ROM.
I also found this one, same pin notching as the known Apple x100 ROM SIMMs but it has different number 341-0757 and I couldn't find out via Google if it's from specific model or what.
What idiot cuts the memory stick to make it fit a different notch? If it doesn't fit, it's for a reason. I doubt it ever worked when I pulled out of a dead 8600 and put it aside and forgot about it. I didn't even notice it until I was comparing the notches to sort out the PCxx from DDR and DDR2 modules I have in my pile of parts. I thought it might have been an ECC originally but it has only 8 chips on one side and none on back so it can't be ECC (ECC usually have # of chips divisible by 3)
These two look like Cache RAM, with Parity from the looks of it.