Dual Channel on an Emachines T5082

You cannot. See table below.
eMachines W3611 RAM Specifications Standard Memory 512 MB (removable) Maximum Memory 2.0 GB Memory Expansion 2 sockets Memory Comments PC2-4200 DDR2 SDRAM DIMMs. Supports Dual Channel DDR2. CPU Type 3.0GHz Intel Pentium 4 631 Model Comments 800MHz FSB, Intel 945G Chipset

I'm a bit confused....did you have all four of these in the ACER and are trying to put the 2x1GB into the Emachine? And that the 2x1 GB wouldn't work in the Emachine but they did in the ACER and that the 2x512 Acer cards worked in the emachine?

If that is what happened here is my best guess. The ACER MOBO will support 533/667/800 MHZ DDR2 RAM. The Emachine will only support 533 RAM. Iys possible the 2x1GB are either 667 or 800 MHZ and are not compatible with the Emachine but will work in the ACER.

RAM / Max RAM Up to 1 GB of DDR2 533 MHz memory, upgradeable to
2 GB using two soDIMM modules (dual-channel support) RAM / Max RAM Up to 1 GB of DDR2 533 MHz memory, upgradeable to
2 GB using two soDIMM modules (dual-channel support) RAM / Max RAM Up to 1 GB of DDR2 533 MHz memory, upgradeable to
2 GB using two soDIMM modules (dual-channel support) RAM / Max RAM Up to 1 GB of DDR2 533 MHz memory, upgradeable to
2 GB using two soDIMM modules (dual-channel support)Max RAM: Up to 1 GB of DDR2 533 MHz memory, upgradeable to
2 GB using two soDIMM modules (dual-channel support) This is the kind of memory you need, no matters the branch

512 MB of DDR2 533 MHz system memory, upgradeable to 2 GB using two soDIMM modules (dual-channel support)

Yes its possible
Yes but the memory its going to run at slow speed 533Mhz

Your laptop's RAM is upgradeable to up to 4 GB using two DDR2 533/667 MHz SODIMM modules.

So your upgrade options here are:
1. Buy a 1 GB DDR2 533/667 MHz SODIMM module & install it to get a total RAM of 2 GB (Price around US$ 25).
2. Buy a 2 GB DDR2 533/667 MHz SODIMM module & install it to get a total RAM of 3 GB (Price around US$ 45).

sorry, i re-read your post and saw that you are using 2 sticks,, if you have 4 slots for ram, insert one into the first slow, skip a slot and put the second stick in the 3rd slot, give it a try.

Dear user in my observation this is sauses due to two different bus speeds. i mean both RAMs dont have the same bus speed. thats why both RAMs dos'nt work at the same time. hopfully u will understand it

Your system comes stock with one stick of DDR2 (512 MB), which means that it is _ not_ dual channel DDR2 memory as dual channel DDR2 must be installed in matched pairs. Try to exchange the new memory for 2G of some single channel DDR2.

Hello,
Welcome to FixYa.

Currently there is no bios update for your system. In the course of operating my business I have seen dual channel RAM run in single channel as a result of the CPU in use. This should not be the case in your model though.

I would encourage you to speak with a Kingston rep to solve this problem as you are well within warranty.

Toll-Free:+1 (877) KINGSTON
+1 (877) 546-4786
Here is the Contact Page for Kingston if you are outside the U.S.
http://www.kingston.com/company/contact.asp

They will be able to resolve your issue which has to be related to the RAM you purchased. Even though the memory configurator pointed you to this RAM, it may not be functioning correctly and should be replaced or upgraded to a more specific RAM model.

Regards, thanks for choosing FixYa.
Worldvet

I had the same issue on this board where it came with a Samsung 512 MB 533 MHz PC2-4200 DDR2 DIMM. I put in a 1 GB Kingston with the same specs (533 MHz PC2-4200 DDR2) and it would not recongize the Samsung anymore with the system reading as 1 GB of RAM instead of 1.5 GB. Tried every configuration and would only see the Kingston. It would only see the Samsung if I pulled out the Kingston regarless of the slots I use. So, I just bought the exact same make/model of Kingston and it recognized that fine and the system now has 2 GB of memory (max this board allows). And, I had already installed the latest BIOS for this board from Intel before doing all this so wasn't an old BIOS. I'm figuring the board didn't like something about the Samsung memory (speed, module configuration, etc.) that made it not play nice with the Kingston. If interested I bought the DM8400A/1G Kingston modules. And, this board appears not to support dual channel memory. Only has channel A, slots 0 and 1, and I read need two channels to support dual channel (seems obvious). Boards that supports dual channel memory normally have 4 memory slots, two for channel A and two for channel B, then put in matching modules in slot 0 for channel A and B and have dual channel memory access. And if want more ram, then matching modules in slot 1 for channel A and B.