DDR2 RAM works individually but not together

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whatsup

Honorable
Jun 9, 2013
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Hello everyone,

I have 6 DDR2 1GB RAM sticks, two different manufacturers, all of them work individually, in every slot, however when I try to use 4 of them together, the beeping sound kicks in and PC won't boot. I've tried every possible combination and nothing works, however on their own every single stick works. I want to use 4 GB of RAM instead of 2, is there any solution to this problem?
 
Solution
synthaside
Ok ... so found this on your mobo ... if those are 1 gig sticks your trying to shove in there is a very chance that those are double sided Ram
and according to this limitation on your motherboard

4 x240-pin DIMM, Max. 4 GB, DDR2 1066*/800/667 Non-ECC,Un-buffered Memory
*Support max. 2 DIMM modules only for yellow DIMMs when over-clock to DDR2-1066
*When installing four DDR2 DIMM modules, install only single-sided memory modules.

You require single sided ram to get that board up to four gig ... sorry :-(
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lothdk

lothdk

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Jan 20, 2010
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We need to know the latency and voltage of the RAM modules.

If they are all the equal, try raising the voltage a bit, if they are different, you need to set up the latency and voltage to the highest common denominator.

Of course it could just be a shot RAM slot, is it possible to test all four RAM slots one at a time?
 
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W

whatsup

Honorable
Jun 9, 2013
3
0
10,510
the one I'm using right now is Kingston KVR667D2N5/1G, it has voltage 1.8 CAS# latency 6.0 clocks, RAS# to CAS# Deley 6 clocks, RAS# Precharge 6 clocks, Cycle time 18 clocks, Row Refresh Cycle Time 42 Clocks, single power of supply +1.8V +/- .1V

other one is KVR800D2N6/1G, which is basically the same, just 800 MHz instead of 400, and final third one is AENEON AET760Ud00-25DB97X, it's latency, CAS and RAS is at 5 clocks and runs at 1.8 V

Edit:

I've also tried every possible slot/RAM combination, together and individually, individually every slot and memory stick works, as long as its 2 GB it can work even if it's one of each, however as soon as total RAM goes over 2 GB pc won't boot and I get the beeping sounds



 
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synthaside

synthaside

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May 2, 2011
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Ok ... so found this on your mobo ... if those are 1 gig sticks your trying to shove in there is a very chance that those are double sided Ram
and according to this limitation on your motherboard

4 x240-pin DIMM, Max. 4 GB, DDR2 1066*/800/667 Non-ECC,Un-buffered Memory
*Support max. 2 DIMM modules only for yellow DIMMs when over-clock to DDR2-1066
*When installing four DDR2 DIMM modules, install only single-sided memory modules.

You require single sided ram to get that board up to four gig ... sorry :-(
 
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Solution
synthaside

synthaside

Distinguished
May 2, 2011
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18,760
Quick explanation on single vs double sided ram ( its a kinda old concept)

Single Sided RAM Ram modules mounted only on one side of the stick.
Double Sided RAM Ram Modules are mounted on both sides.

Its going to be a challenge to track down old 1 gig single sided ram i'm afraid ... ebay is your best bet and you will need 4 x 1 gig singles to get up to 4 .... might be worth a mobo swap

http://www.ebay.co.uk/itm/2GB-1GBx2-Integral-DDR2-800MHz-Desktop-NON-ECC-Single-Sided-RAM-Memory-module-/130918313241?pt=UK_Computing_ComputerComponents_MemoryRAM_JN&hash=item1e7b56ed19
 
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