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Windows 7: I installed new ram - Alert! Memory configuration mismatch!

04 Dec 2014   #1

Windows 7 Ultimate x32
I installed new ram - Alert! Memory configuration mismatch!

Alright, I recently installed new ram in my dell precision T5400.
It came with 2GB already installed but I decided it was time for an upgrade. I installed the ram and followed all the steps I went onto my system and found out it said Installed memory (RAM) 6.00 GB (2.00 GB usable) Also when I start up my computer it says:

Alert! Memory configuration mismatch!
Please enter Setup Memory Info details.
Strike the F1 key to continue. F2 to run the setup utility
Press F5 to run onboard diagnostics


I then press F2 and look at my memory it says

Memory Slot--Size----ECC-----Rank---Type- Organization
DIMM 1--------1GB-----Yes------1------FBD------X8
DIMM 2--------4GB-----Yes------1------FBD------X4
DIMM 3--------1GB-----Yes------1------FBD------X8

Ignore the ' - ', it was the only way for separating it.

My Processor information: Intel(R) Xeon(R) CPU E5410@ 2.33GHz 2.33 GHz


My System SpecsSystem Spec
04 Dec 2014   #2

Windows 7 Ultimate x32

Thirty-two bit cannot use all 4gigs without a special instruction set. Yours probably saw 3.25 gigs and the other missing RAM is probably for shared memory on the video card.

It is perfectly normal and there isnt anything you can do in 32 bit. You could upgrade to 64 to utilize the added RAM but 64 bit uses more resources so the move would probably be a wash. See the snip of my system. I have 4 gigs installed and my system can only see 3.3 of it

Is this the solution to my problem?
My System SpecsSystem Spec
04 Dec 2014   #3

Windows 7 Ultimate x32

Do I need a 64x system?
My System SpecsSystem Spec

04 Dec 2014   #4

Win7 Ultimate X64

Whilst you are correct regards regards the 32 bit limitations I suspect your issue is that you have a matched pair running in dual channel mode and you have tried to add a single stick which will not run in dual channel as there is only one, I think the organization column indicates this
My System SpecsSystem Spec
04 Dec 2014   #5

Windows 7 Ultimate x32

So you are saying it takes two at once? Sorry for not being as technical as I am pretty new to this stuff. So should I purchase a 64 bit processor and 64 bit windows 7?
My System SpecsSystem Spec
04 Dec 2014   #6

Windows 7 Ultimate x32

I look on another article and saw this: No, there's no point because 64-bit windows will not run on a 32-bit only CPU.

ETA: now, if they actually have a 64-bit platform (Intel Core/Core2, Pentium 4/D with EM64T, or AMD Athlon 64 or Opteron) then yeah, as long as there are 64-bit drivers for everything you can switch over the OS.
My System SpecsSystem Spec
04 Dec 2014   #7

Windows 7 Pro x64 sp1

The E5410 mentioned in post #1 is 64 bit capable. See Intel sheet

ARK | Intel® Xeon® Processor E5410 (12M Cache, 2.33 GHz, 1333 MHz FSB)
My System SpecsSystem Spec
04 Dec 2014   #8
Mark Phelps

Win7 Pro 32-bit, Win8 Pro 32-bit

Found the following info that addresses a similar problem:

Problem, you are Mix-Matching RAM in the same primary channel.
Use CPU-z and look at the JEDEC 'SPD' tab of all the slots
CPU-z ->

You need to see if there is one column for all three slots that shows the same information. You may then have to go back into the BIOS to set the timings manually if they are not set to what you see.

I recently upgraded my memory from 1066 to 1600 and, using the info from CPU-Z, went into my BIOS to change the memory speed to 1600.

Also, I discovered a "patch" that allowed the PAE kernel to actually work on Win8 so that now, I can use all 8GB of memory in my 32-bit install. If you're interested, then let me know and I'll pass along the info. But, be sure to make an image backup of your install first, so that you can restore it if the patch goes badly.
My System SpecsSystem Spec
04 Dec 2014   #9

Windows 7 Pro x64 Windows 10 Pro x64

You have to have the ram in the correct slots to run in dual channel, with only 3 sticks in it may not run in DC, consult the MB manual.

I would most definitely install 64 bit, after all you have 8 memory slots and a Xeon
My System SpecsSystem Spec
05 Dec 2014   #10

Win-7-Pro64bit 7-H-Prem-64bit

I would of though a manufacture would only put a 32 bit os on a laptop for better battery life :/
Doesn't make much sense on a desktop ?
My System SpecsSystem Spec

 I installed new ram - Alert! Memory configuration mismatch!

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