New DDR2 RAM doesn't fit

Just bought 2 4GB sticks of DDR2 RAM, and they don't fit in my motherboard. The new sticks are Komputerbay 240 Pin 800MHz PC2-6400F DDR2 ECC Fully Buffered FB-DIMM Memory Modules (on the bottom in the picture), and my old sticks are Geil PC2-8500 DDR2-1066 Memory Modules (on the top in the picture). My motherboard is an ASRock N68C-GS4FX. My guess was that the new motherboard required non-ECC momory, but I really don't know. Thanks in advance, Will

Will

Posted 2015-08-09T18:50:04.347

Reputation: 107

Google is Your Friend! :) http://www.asrock.com/MB/NVIDIA/N68C-GS4%20FX/index.asp?cat=Manual Found this in 30 seconds. You have the wrong kind.

– cybernard – 2015-08-09T19:04:27.547

Yes, your motherboard only supports non-ECC, un-buffered memory. Here are the specifications for your motherboard.

– MC10 – 2015-08-09T19:04:52.170

if they dont fit, they are wrong, always. take that as life law. – Francisco Tapia – 2015-09-11T14:33:41.837

The lower label is funny. Unbufffered 240 pin unbuffered dual in-line memory module. They are making very sure it is not registered memory. :) – Hennes – 2015-09-11T16:03:35.200

Answers

It looks like you bought Fully Buffered DDR2, which is not compatible with DDR2 slots.

If you need further information, you can start with this Wikipedia article

240-pin DDR2 FB-DIMMs are notched differently from conventional 240-pin DDR2 DIMMs. As a result, those two DIMM types are neither mechanically nor electrically compatible.

Austin T French

Posted 2015-08-09T18:50:04.347

Reputation: 9 766

also referenced in Wikipedia here regarding DDR2 specifically and FB (fully-buffered) RAM. Also learned this the hard way...

– SliverNinja - MSFT – 2017-10-06T19:59:59.203

If you somehow ended up with a boatload of the Fully Buffered DDR2 RAM (different architecture than standard DDR2) you might want to consider purchasing a used HP XW6400 Workstation Computer - around $100-$150 refurbished on eBay. They take the Fully Buffered ECC Memory and Max out at 16gb. Makes for a superfast desktop replacement PC, faster than anything I've seen new if you get one with a Quadcore.

daveschrom

Posted 2015-08-09T18:50:04.347

Reputation: 11

Your answer is good, i personally avoid to speak about money or prices because they go out to date pretty soon. fix it and i'll upvote. – Francisco Tapia – 2015-09-11T14:54:28.337