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Memory Compatibility Question

Tags:
  • Corsair
  • Crucial
  • Compatibility
  • Memory
  • Product
Last response: in Memory
December 10, 2010 4:06:33 PM

Alright, so, a few days ago I bought some Crucial 2 GB sticks and I ended up returning them due to overall incompatibility (even though Crucial "guaranteed" they were), and now I'm getting some Corsairs.
The current memory I have is 2x1 GB. The exact RAM can be found here:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
The current RAM I'm looking at getting is this:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
The reason I'm thinking of those is because its on my mobo's QVL; which can be found here:
http://www.asus.com/999/download/products/2164/2164_10....
Would the two different speeds be an issue?
Could I happily mix my current 2 gigs and the Dominator's 4, and everything will be fine and dandy?
If not; what other option on that QVL can I pick that will have the same results as the XMS+Dominator? (6 GB total, and preferably Corsair)

More about : memory compatibility question

a c 347 } Memory
December 10, 2010 4:36:01 PM

Hmm...your MOBO & current RAM info would help the Physic Hotline. :) 

What EXACT RAM do you have now; I prefer a link e.g. -> http://www.newegg.com/Product/Product.aspx?Item=N82E168...

If you MIX-MATCH any RAM you're asking for it, and I would strongly recommend matching the EXACT RAM you have now or start from scratch.
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December 10, 2010 6:15:36 PM

I did list my exact RAM and mobo...
The first link I put is the exact RAM I have now.
The QVL link is for the exact mobo I have right now...

So are you saying I can't use my current Corsair RAM with the Cosair Dominator RAM I'm looking to get?
(The second link I posted is the Dominator RAM I'm looking at)
Thanks
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a c 347 } Memory
December 10, 2010 6:43:02 PM

The QVL is a dead link - try it in another browser; remember when you needed to enter the code to D/L {e.g. G7DR9}. Next I read 'current' stated twice.

So I guess it's still tooo much trouble to list the MOBO.

Current RAM:
TWIN2X2048-6400C4 - DDR2
1GB 800 4-4-4-12 @ 2.1v

Proposed RAM:
TWIN2X4096-8500C5D - DDR2
2GB 1066 5-5-5-15-2T @ 2.1v

Don't mix Dominator with XMS: Different ICs, Speeds, Timings, etc.
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a c 347 } Memory
December 11, 2010 12:11:55 PM

Work off this list of compatible RAM -> http://www.corsair.com/configurator/product_results.asp... The CAS 4 probably never was the correct RAM for your ASUS P5Q.

1GB 800 4-4-4-12 @ 2.1v
2GB 800 5-5-5-18 @ 1.8v
==================
XGB 800 5-5-5-18 @ 2.0v <= You have 3 bad things: CAS Timings, Voltage and Size differences which do NOT work well together. Therefore, you're NOT Solved - you're instead 'creating' a Problem.
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December 11, 2010 3:09:21 PM

I'm looking at the status for all four slots right now, and they all show to have the same memory type DDR2 (PC2-6400), speed (400 mhz DDR2 800), supported frequencies (270.3 mhz, 400 mhz) and the same timings (5-5-5-18-22 at 400 mhz, at 1.8 volts).
So what's the problem? All the difference is the 1 GB vs 2 GB. How's that a problem?
My mobo says I can mix sizes no problem.

I'm not even using the 2 1 GB's right now as my OS is 32 bit. That's only temporary though, as I still have to buy Windows 7 64 bit.
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Best solution

a c 347 } Memory
December 11, 2010 7:43:00 PM

DDR = Double Data Rate; JEDEC = 400 MHz X 2 = 800 MHz or the rated Speed.

So I assume everything is working perfectly then, good!
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December 22, 2010 12:05:29 AM

Gah, I keep getting emails about this, and I solved it myself... eenie meenie miney moe...
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December 22, 2010 12:05:39 AM

Best answer selected by Tezzick.
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