imac g3 memory problems

barryWest · barryWest #1 (**permalink**)

01-20-2010, 04:31 PM

I just received a stick of 512MB of ebay, and am having trouble getting it to work with my existing RAM.
So here's the situation, and what the stickers stay on each stick of memory:

1) 512MB - PC 2700 333Mhz DDR (this is the new one)

2) 512MB - PC-133 133Mhz

3) 128MB - PC-100 100Mhz

So, number 2 and number 3 above work with each other (which is what I had initially), but when I put in the new stick of 512 (number 1 above), it is not detected at all. The new stick appears to be fine by itself, but is not detected with either stick of my existing RAM.

Collin Bl · Collin Bl #2 (**permalink**)

01-20-2010, 05:06 PM

Get another PC100 or PC 133 the PC2700 is for a later unit.

hughvane · hughvane #3 (**permalink**)

01-20-2010, 05:20 PM

The PC133 will work okay, but at the slower 100 speed; the PC2700 is for the G4 iMac and eMac. Be wary too of buying high density RAM made for Win PC's. Not good. The best place I know for buying Mac-suitable RAM is Apple iMac Memory Upgrades and Video Installation Guides - Get the right memory for your G3, G4, G5, or Intel iMac Model. Even from NZ, I buy RAM there.

pigoo3 · pigoo3 #4 (**permalink**)

01-20-2010, 06:13 PM

You definitely need to use the PC133 or PC 100 with your G3 iMac. Also consider that PC100 or PC133 that is compatible with Windows computers may not always be compatible with a Macintosh iMac G3.
- Nick

harryb2448 · harryb2448 #5 (**permalink**)

01-20-2010, 06:51 PM

The PC133 will work okay SUBJECT to it being low density Mac compatible and if you purchased it from a Mac dealer on eBay. Most PC memory is high density and will not work in your iMac, causing kernel panics.

pigoo3 #4 (permalink)
Member Since: May 20, 2008 Location: U.S. Posts: 20,674 Mac Specs: 13" MB 2.4ghz, 2gig ram, OS 10.7.4	01-20-2010, 06:13 PM You definitely need to use the PC133 or PC 100 with your G3 iMac. Also consider that PC100 or PC133 that is compatible with Windows computers may not always be compatible with a Macintosh iMac G3. - Nick - Computer slow, too many "beachballs", read this: Beachballs - Computer seems slower than it used to? Read this for some speedup tips: Speedup - Almost full hard drive? Some solutions. Out of Space - Apple Battery Info. Battery
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barryWest #1 (permalink)
Member Since: Dec 27, 2009 Posts: 14	01-20-2010, 04:31 PM I just received a stick of 512MB of ebay, and am having trouble getting it to work with my existing RAM. So here's the situation, and what the stickers stay on each stick of memory: 1) 512MB - PC 2700 333Mhz DDR (this is the new one) 2) 512MB - PC-133 133Mhz 3) 128MB - PC-100 100Mhz So, number 2 and number 3 above work with each other (which is what I had initially), but when I put in the new stick of 512 (number 1 above), it is not detected at all. The new stick appears to be fine by itself, but is not detected with either stick of my existing RAM.
	QUOTE Thanks

Collin Bl #2 (permalink)
Member Since: Apr 07, 2009 Location: Napier NZ Posts: 3,273 Mac Specs: 27 iMac i5, 2.4 C2D MBP & iMac 20, 1TB dual TC, AppleTV, iPh4	01-20-2010, 05:06 PM Get another PC100 or PC 133 the PC2700 is for a later unit.
	QUOTE Thanks

harryb2448 #5 (permalink)
Member Since: Nov 28, 2007 Location: Nambucca Heads Australia Posts: 14,265 Mac Specs: iMac i5 2.7GHz OS X.8.3	01-20-2010, 06:51 PM The PC133 will work okay SUBJECT to it being low density Mac compatible and if you purchased it from a Mac dealer on eBay. Most PC memory is high density and will not work in your iMac, causing kernel panics.
	QUOTE Thanks

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