New 980x doesn't want to work with 24gb RAM?

ghost6303 said:
he never said that. he said when he has the 980x CPU in the system, it will not report the full amount of ram, only some random percentage of it. when he puts in a 920 CPU in, the full 24 gigs shows up and is usable.

this sounds exactly like a faulty memory controller on the 980x.
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Look at the original post, again. The OP's account and the image of the Windows Properties dialog informs us that, repeatedly, all 24 gigs are being reported (physically counted) to Windows and 16 gigs are usable (available to Windows, per BIOS direction), to the precise byte. Assuming Windows was even bootable with it, a flaky memory controller would cause much more pain than this. I hope the OP will post the system's I/O map to help out here. I'll put money on a BIOS problem and the issue being reproduced with a new 980x, all other things remaining constant.
 
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Thanks! I need one more tidbit: Under the Performance tab of Task Manager, what value is "Total?"
 
16gb. The Win7 resource monitor categorizes the remaining 8gb as hardware reserved.
 
Yeah, a quick glance at your mmap.gif shows that just over 4 gigs is being consumed across 2 ranges of memory alone. Thanks for posting it! Try this tool via an elevated command prompt with the -r parameter. It should quickly find and add up all of the available ranges' worth of memory. Assuming no fault with your mobo, the BIOS is handling these reservations.

http://www.winsiderss.com/tools/meminfo/meminfo.zip
 
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Run the 64-bit version, instead. :p (amd64 folder within that .zip)
 
Agh! I woke up like five minutes ago. Don't blame me :D
Code: 
Physical Memory Range: 0000000000001000 to 0000000000096000 (149 pages, 596 KB)
Physical Memory Range: 0000000000100000 to 000000009F790000 (652944 pages, 26117
76 KB)
Physical Memory Range: 0000000100000000 to 0000000460000000 (3538944 pages, 1415
5776 KB)
MmHighestPhysicalPage: 4587520
 
Since more than a few tools have pointed at it, I still think the BIOS is simply up to something. Those ranges add up to ~16375.145 megs' worth of memory available to Windows.
 
I have all 24gb working at the moment. All I did was mix and match the RAM sticks and re-seat them, and re-seat the CPU. I've rebooted five times and it's gone in to 24gb each time.

I've probably done this about fourty times during the course of my troubleshooting with multiple sets of RAM. I don't know why it's deciding to work right now, but it seems to be somewhat reliable. I even have it overclocked @ 140x30 / 4.2GHz (RAM at 1.55v, 1403MHz) and it's been running prime stable for about four hours so far.

I'm just going to STFU for a while and keep my fingers crossed. What a bother.

Edit: I also sort of smacked the computer a bit, but it probably didn't help and I wouldn't advise it.
 
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RageVI said:
I have all 24gb working at the moment. All I did was mix and match the RAM sticks and re-seat them, and re-seat the CPU. I've rebooted five times and it's gone in to 24gb each time.

I've probably done this about fourty times during the course of my troubleshooting with multiple sets of RAM. I don't know why it's deciding to work right now, but it seems to be somewhat reliable. I even have it overclocked @ 140x30 / 4.2GHz (RAM at 1.55v, 1403MHz) and it's been running prime stable for about four hours so far.

I'm just going to STFU for a while and keep my fingers crossed. What a bother.

Edit: I also sort of smacked the computer a bit, but it probably didn't help and I wouldn't advise it.
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You know what I'm thinking now?

You might have some different sticks of RAM. Believe it or not, I've seen this happen plenty of times too.

What kind of RAM did you say you have again? And are they all IDENTICAL? Did you buy them at the same time, and are they from the same lot/batch?

Point in case. In my personal rig, I have 8GB of DDR2-6400 RAM, 4x2GB. Each pair is actually different (they have different timings) although they are the same model number.

It could be possible that there may be physical differences in one or two of the RAM sticks you have. The problem is that if they have heat spreaders, there's pretty much no way you'll be able to tell unless you pull them off. CPU-Z, however, I think will tell you exactly what kind you have. My recommendation is for you to run one at a time, boot up your OS, run CPU-Z, and take note of what the memory reads, then do the rest, until you've got them all noted. Then you can compare.

Just because it disappeared now, doesn't mean it won't pop up again, and in the worst time (like when you're writing a document). Get it taken care of first, then enjoy your rig.
 
rflcptr said:
How's the system holding up?
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Sorry for the late response. It's been holding up great! :D

Been running all 24gb with my 980x @ 4.23GHz and memory overclocked slightly @ 1410MHz, 9-9-9-24.

I tested the crap out of this and it's very solid. I labeled which slot each stick is going in to, just in case...
 
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