Installing more than 3gb ram and system crash

Acer Aspire m1100-b1300a desktop
March 9, 2010 at 17:26:35
Specs: Windows 7, AMD 6000+/Mixed
The problem I'm having is any time I try to install more than 3gb of ram I get the BSOD. Now to eliminate the obvious.
Acer Aspire M1100
Acer MOBO F690GVM Socket AM2
AMD Athlon 6000+ Processor 3.0ghz Dual Core Installed 1 month ago
Ati Radeon 4830 PCIe Graphics cards installed 8 months ago
Dual monitor setup 3 months ago with Acer 22" and Dell 17" monitors
Antec 500 watt PSU installed 1 year ago
Windows 7 PRO 64-bit installed 2 months ago
Phoenix Bios
AMD chipset RS690/RS690M
MOBO supports 8gb ram of pc2-5300, pc2-6400 and pc2-8500 and is dual channel

Now the memory. I had 3 1gb Crucial memory chips installed for 8 months with no problems. I then installed Windows 7 64-bit with the same memory with no problems. I wanted to upgraded to more ram (hence why I got 64-bit) and bought a on-sale memory chip (Wintec).
So far 3 1gb Crucial PC2-5300
1 2gb Wintec AmpX PC2-6400
I have switched these chips around among the 4 slots and it is always BSOD. I took out all the Crucial chips and left the Wintec in slot 4 and the computer starts fine. I then installed 1 Crucial chip on slot 1 and the computer starts up fine. I then install another Crucial chip in slot 2 and BSOD. I swap out that chip with the last Crucial chip and put it in the same slot (#2) BSOD. I move that chip from #2 to #3 and BSOD.
I'M LOST!!!


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#1
March 9, 2010 at 20:37:27
The memory controller is built into the CPU, not the motherboard. DDR2-800 is the proper RAM for your AMD CPU. Why are you mixing DDR2-667 & DDR2-800? And apparently you don't care about running dual channel mode? You should be running a matched pair or matched pairs of RAM, not a mish-mash of capacities & speeds.

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#2
March 10, 2010 at 04:21:10
I don't mean to sound sarcastic here but, I have an Acer computer not a custom built from scratch computer with a top grade bios that I can configure the way I wish. I'm on a budget. Every part is a stepping stone to the next. I know that running DDR2-800 and DDR2-667 together will cause the DDR2-800 to clock at the same speed as the DDR2-667. Which is better, 5gb of DDR2-667 Or 2gb of DDR2-800 for however long till I can get some more money and buy more DDR2-800.
It's not about caring. It's about money and time.

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#3
March 10, 2010 at 04:35:23
5 gigs is better than 2. Since it's all ddr2. But like Jam said, ddr2 800 is the ram that was meant to run with your processor the best. I believe that Win7 64 bit needs 4 gigs of ram to perform properly.

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#4
March 10, 2010 at 09:09:50
But it should run with the other ram and won't. Anytime I install more than 3gb it causes BSOD.
Best, will, and should are different things.

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#5
March 10, 2010 at 14:52:00
This is not so much about OEM vs custom built as it is about configuring your system properly for best performance. Adding more RAM will only improve performance if your system doesn't have enough memory in the 1st place. Too many people think 'more is better'....if 2GB is fast, 4GB will be faster, 8GB will be even faster. But that is not necessarily the case. After a certain point, you will see little or no difference...it's called the 'law of diminishing returns'.

Also, you generally need either 2 or 4 sticks for dual channel mode to kick in. Very few boards will enable dual channel mode when 3 sticks are installed. That means you will only be running with 50% of the potential memory bandwidth with 3 sticks.

And if the Wintec RAM is so-called 'gaming memory', it more than likely requires a higher voltage than the Crucial RAM. If the Crucial voltage requirement overrides the Wintec voltage requirement, the Wintec RAM will be undervolted & that *may* be what's causing problems. That's why it's very important to carefully match your RAM. And it's even more important with an OEM system because you don't have the ability to properly tweak the BIOS settings.


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