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#31
It rarely is the motherboard in these cases, but I have seen it a few times in the hundreds of threads I've helped in with these problems. Best to be thorough, but don't stress too much about it. :)
BSoD when screen saver trying to start
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New #32
Well, one more thing (and I am not Steve Jobs LOL) ...
The two memory modules in question are slightly older. They are:
Kingston KVR800D2N6/2G ... got two of these.
The newer modules are:
Kingston KHX6400D2K2/4G that comes in a kit of 2 modules.
Their specifications are slightly different. The newer ones are CAS 5-5-5-15 (whatever that mean
) the older KVR ones are CAS 6-6-6-18.
One of the older KVR who had problems in Slot A1 is having errors in Slot A2 (of the motherboard - 8 errors so far as I type this). Will test the rest. But I am not sure if I had the right memories mixing the old and the new - which worked fine for the most part until recent BSoD, etc.
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New #33
Mixing RAM can often lead to problems, but if you are seeing errors, it is likely a bad module and not the mixing itself that caused crashes. That being said: I would recommend that you try to get the exact same RAM as the modules you keep when you replace the other RAM just to avoid any mixing and matching issues.
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New #34
You may be right about the motherboard is okay.
I am seeing some of the addresses which produced an error to be the exact same address on one particular module (one of the KVRs) ... the error happened in Slot A1, A2, and now B1.
Translation - it is almost 100% sure that one or more of the millions of transistors inside this DIMM module (a KVR) may be faulty - thus same address locations keep coming up as errors. Nothing wrong with the motherboard I think.
The problem I have is that the memory test software is not Windows base nor DOS based. I could not keep track of the address other than taking a photo with my phone. I am planning to contact Kingston for their supposedly lifetime warranty.
If they give me new modules, I will want the KHX ones to match as suggested.
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New #35
Sounds like good steps and you reached a logical conclusion. Let us know when Kingston responds or when you get the new RAM, or both, whichever you prefer.
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New #36
Ok! Finally!
Sent the defective memory modules back to Kingston and then Kingston sent me the replacement - received it by FedEx today.
DIMM0 and DIMM2 are of the HyperX variety by Kingston and both pass the memory tests with no errors. These are Kingston KHX6400D2K2/4G (2 modules in a set making 4GBytes) and remained with me.
DIMM1 and DIMM3 are those who had errors during memory tests. These are Kingston KVR800D2N6/2G (2 modules making 4GBytes). The new ones are just installed and so far no issues.
If nothing else, the only thing odd is that the KVR800D2N6/2G (those that were replaced and currently in DIMM1 and DIMM3 slots) are forced to run at lower 330MHz and not at the standard 400MHz? Additionally, I noticed that in the section where it says "Speed (O/C)", the KVR800D2N6/2G are constantly above 15% and sometime close to 20% while the other two in DIMM0 and DIMM2 (the KHX6400D2K2/4G) are at 2% or so.
Currently researching what all these means ...
Updates ...
DIMM1 and DIMM3 are actually -15% .... not +15% LOL. My bad.Last edited by rting; 25 May 2012 at 22:32. Reason: Grammar
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New #37
Your new RAM will be clocked at the same frequency as the other set of RAM you have to prevent conflicts. That is probably why they are reduced to 330MHz instead of 400 MHz. The important question is: How is the system currently responding to the new RAM? Any stability problems?
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New #38
The system seems stable ... I mean after some BF3 running at Full Screen, crossfired the two (now cleaned HD4850), etc. at default resolution.
Other programs loads faster.
The problem must have originated from dust build up together with my ignorance of not checking for BIOS updates. Which now I will do if I get a new computer, etc. I also checked these memory at retail - those they sent me cost like $70! Like way more expansive than the newer DDR3 memory!
Looking out, if I want to update the memory all together, it seems that I cannot find DDR2 memory modules that are 4GB each - making a total of 4x4GB = 16GBytes. 16GBytes is the theoretical DRAM capacity of my Asus P5Q-e. In other words, it is either I get a new motherboard and CPU all together (My Core2Quad Q6700 only fits 775 socket) ... which may proof even more costly.
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New #39
There is really no performance increase with 16 GB as opposed to 8 GB unless you are doing video editing or AutoCAD/Inventor/Solid Works tasks. I do a lot of video editing myself, and I have been perfectly happy with my 6 GB system and 8 GB system, so you would be hard pressed to find a use for all 16 GB.
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New #40
I trade financial instruments - 4 x 22" screens ...
Being cheap in fact with my internet connection but besides the connection, it is the memory and the hard drive.
Currently looking at SSD drives ...
If I engaged crossfire, I loose 2 screens ... but that would be my "gaming setup" LOL. :)
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