256 and 512 ram combo possible?

Time
April 5, 2006 at 09:50:39
Specs: XP sp1, 2.16GHZ
I not good with PCS. Is it possible to pair a 256mb ram module with an existing 512mb?

I thank you in advance.


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#1
April 5, 2006 at 09:58:23
As long as they are both supported by your motherboard in terms of speed and size you should be fine.

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#2
April 5, 2006 at 10:04:06
Thanks for the reply.
Do you mean speed like 333? and what about size, sorry I don't follow this part.
What do you mean by size? Can you give me an example.
Also, what about manufacturers do these need to be identical? For exampe, Kingston valueram and Crucial.
Thanks

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#3
April 5, 2006 at 10:17:46
You should always first check out your mobo manual or PC manual for RAM expansion. It's the single & most important fact you will need.

i_XpUser


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Related Solutions

#4
April 5, 2006 at 11:09:32
I have consulted the manual. But there is no mention of using 256 and 512 together. Neither are any manufactures named. I don't see why motherboard seems to be the only one limited to using identical type of ram. My motherboard is a KM18G Pro.

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#5
April 5, 2006 at 12:02:11
Hi
ive just read your other post you need identical type and capacity ram for your mobo as it uses dual channel & fill the correct dimm slots in order 1+3 or 2+3, download the manual as suggested by Tubesnwires.
You need pc2700 (333) matching pair=
matching size eg two 256 sticks
or 2 sticks 512 etc not mix n match!
see page 10 rtm
& test the unknown branded stick on its own using memtest86
regards

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#6
April 5, 2006 at 12:21:05
If you have 512 already, why dont you just buy another stick of it, its only 15-20 bucks more than 256.

iGIS


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#7
April 5, 2006 at 13:14:59
But, if you have the two sticks already, you can install both of them on the motherboard and you just wont take advantage of the dual channel support. but you will take advantage of the additional memory. As far as speed i did mean 333, so you should be fine.

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#8
April 5, 2006 at 13:42:12
You been so helpful. 256 was just availible next to nothing. I do agree on 2 sticks of 512 ultimately. I will use 2 sticks without
dual channel support as you have said. It would have taken me an age to digest all this technical stuff without you guys. I shall post back once I have upgraded.

Thanks



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#9
April 5, 2006 at 20:35:54
Once again, you DO NOT need to have 100% identical memory sticks to run in dual channel mode, the technology is a feature of the board and not the sticks.

While it may be the ideal to do that, it is not a fundamental criteria, the sticks do not even have to be of the same size or manufacturer,but you definitely want sticks of the same speed.

I ran a 256MB + 512MB chips in dual channel mode on my older NF7-S and below is SANDRA's report:

Chipset 1
Model : Abit Computer Corp nForce2 AGP Controller
Front Side Bus Speed : 2x 201MHz (402MHz data rate)
Width : 64-bit
Maximum Bus Bandwidth : 3216MB/s

Logical/Chipset 1 Memory Banks
Bank 1 : 256MB DDR-SDRAM 3.0-3-3-8CL 2CMD
Bank 2 : 512MB DDR-SDRAM 3.0-3-3-8CL 2CMD
Channels : 2
Speed : 2x 201MHz (402MHz data rate)
Width : 64-bit
Maximum Memory Bus Bandwidth : 6432MB/s

Evaluate your rig's gaming ability


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#10
April 6, 2006 at 18:43:48
Just go to Crucial.com and let it analyze your PC, you will find exactly what you need there. If you need specs on your PC D/L Everest and let it scan your PC.

Hopefully my advice will help you...Please post back with your results....thanks


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#11
April 6, 2006 at 18:47:07
Another good rule of thumb...if your PC uses a maximum of 512MB Ram, you HAVE to use 2 sticks of 256Ram for it to work properly. In other words, you shouldn't buy 1 stick of 512 and put it into 1 slot.

Hopefully my advice will help you...Please post back with your results....thanks


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#12
April 7, 2006 at 06:38:41
Hi thanks for the reply. I have just plugged in 2 additional 512mb modules after some great advice. I have used up all 3 availible slots. When the computer boots the memory entry reads 'dual channel'. Also, I am posting about let you know that regarding ram upgrade everything is great and working fine thanks to everyone who replyed.
Indi

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