How can I work out what Memory I need

[DuncanSWardle]

I have a Mesh Fireblade SLI AMD system - its a few months old

Currently has 1024 MB of Ram and I know it has 2 spare slots

Would like to put extra 1024 in - what memory would I need

I think the motherboard is ASUS A8N-SLI Deluxe Mainboard - DDR400

[M@rtin]

Easiest way is to go onto Crucial Memory (EU) (http://www.thedvdforums.com/jump.php?url=http://www.tkqlhce.com/click-582776-5048129) and use their memory configurator wizard - just tell it what mobo/system you have it it will list all compatible memory :thumbs:

[DuncanSWardle]

Easiest way is to go onto Crucial Memory (EU) (http://www.thedvdforums.com/jump.php?url=http://www.tkqlhce.com/click-582776-5048129) and use their memory configurator wizard - just tell it what mobo/system you have it it will list all compatible memory :thumbs:


Cheers

So simple

Been recommended 512MB—CT6464Z40B

[DuncanSWardle]

Just for info - what difference would 2048 make over 1024

[maddogsuk]

Its very noticable if you do a lot of Video Editing or large Photoshop work. I'm not a gamer so couldnt comment on gaming performance, but I would expect it helps some what too.

[DuncanSWardle]

Its very noticable if you do a lot of Video Editing or large Photoshop work. I'm not a gamer so couldnt comment on gaming performance, but I would expect it helps some what too.

Well thats what I am looking at getting into so gone and ordered - just over £70 all in - not bad I guess

[DuncanSWardle]

Having opened my PC up just to get be nosey prior to memory arriving I notice that I do indeed have 4 bankd for memory but the current memory has gaps between each stick

So it goes memory stick - empty slot - memory stick - empty slot

I take it I just put the new ones in the empty slots ? or should I have

Old memory - old memory - new memory - new memory

[James45]

old - old - new - new would be your best bet for getting dual channel to work.

don't know why they've installed like they have.

[ian turner]

probably because dual channel (assuming it is that) probably requires one in bank 0 or 1 and 1 in the matching bank 2 or 3.
Putting both in the first 2 slots on their own would probably result in single channel operation

[Uncle Nick]

don't know why they've installed like they have.

Because that's the way dual channel is set up on that M/B??

A quick look at some pictures of the board indicates the memory slots are blue - black - blue - black... blue + blue is one set of dual channel, black + black is the other set.

Let's quote from the manual!

"When using two DDR DIMM modules, install into DIMM_A1 and DIMM_B1 slots only."

Numbering the slots 1-4 across the board, A1 is 1 and B1 is 3. The first two slots are one channel, and the second two slots are the other channel. To run in dual channel mode, you need 1 stick in each channel - hence the 1+3 config.

EDIT: So old - new - old - new would be the "correct" way to get dual channel working (although with 512Mb sticks I bet it would work any old way round - they're prety much alike these days)

[DuncanSWardle]

Cheers

Thanks for that

[James45]

Because that's the way dual channel is set up on that M/B??

Not seen that before, thought all mobos had banks arranged in the same order

[Toge]

Nah, dual channel works different for some reason LOL

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