Can't dual channel

Beeg February 1, 2009 at 12:34:22
Specs: Windows XP
I just bought 2 Biostar MCP6P M2+ motherboards to build for some guys at work. Got AMD Athlon X2 5300 cpu's and I ordered 2Gb's of ram from Tigerdirect, I thought they would be a matching set 2x1024mb in one box, but they sent them in 4 separate packages. They are Kingston KVR667 5300. I put two stick in each motherboard and it wouldn't post. Took one stick out and it posted on both motherboards.

I think one of the sticks is bad, but I took the two that posted and put them on the same board and still wouldn't post. I tried messing with the bios but I still can't get it to post.

Also when I started up windows and went to my computer and right clicked and hit properties to display the computer stats down in the ram it only showed 896mb of ram. I know its usually not the full 1024mb but that seems quite a bit less. Could all the sticks of ram be bad?

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February 1, 2009 at 12:40:58
I forgot about 128mb integrated graphics, that is prolly the excuse for the 896mb ram.

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February 1, 2009 at 12:48:15
For starters, you got the wrong should have gotten DDR2-800 (aka PC2-6400). Not a very good board choice either. The GeForce 6150/nF430 combo is several generations old. Geforce is into the 8000 series, nForce is into the 600 series. But since the board only has two DIMM slots, dual channel *should* kick in automatically.

The reason the RAM is only being recognized as 896MB is because the board has onboard graphics. 128MB of the RAM is being used by the video & is not being recognized in Windows. 1024MB - 128MB = 896MB. If you wanna make full use of the RAM, buy a *real* video card.

In the future, don't deal with TigerDirect.

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February 1, 2009 at 12:53:04
Well I dont usually deal with tigerdirect, I am more of a newegg person myself, but my boss and manager wanted cheap systems to work on in their home office. So I found what I thought was a good deal on a barebone. So I bought it but the mobo was on backorder so the lady on the phone said she would send me this on instead and said their shouldn't be any issues with compatibility. The motherboard says it supports 667mhz ram so I figured it would be fine. So it has to be 800mhz to dual channel?

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February 1, 2009 at 12:56:58

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February 1, 2009 at 12:58:04
"So it has to be 800mhz to dual channel?"

No, but DDR2-667 will bottleneck the system.

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February 1, 2009 at 17:27:01
Well I paid $45 for the board and $24 for the 2gb of ram. It was a budget system, I don't care much about it as it was not for me. If it was a computer I was building for myself I would have put more into it.

The guy wanted a decent system for under $250 and thats what I tried to do.

So there is no way I can run two stick of 667 on this board???

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February 2, 2009 at 05:06:10
"I don't care much about it as it was not for me"

If that's your attitude, remind me never to have you build me a system.

"So there is no way I can run two stick of 667 on this board???"

I have no idea what you have or what you've done. The RAM *should* work together in dual channel mode provided the specs are the same & the BIOS is configured correctly.

For another $10-20 you could have gotten a modern AMD 780G board with 4GB of DDR2-800, but to save a few bucks you got a board based on an old chipset & only 2GB of DDR2-667 which apparently doesn't work properly.

You got what you paid for....

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