See page 74 in the Service Manual for the memory installation guide for single, dual or tri-channel module positions.
Mismatched memory modules can have an adverse affect on system performance: NOTE: A 64-bit operating system is required to support 4GB or more of system memory. Memory modules should be installed in pairs of matched memory size, speed, and technology. If the memory modules are not installed in matched pairs, the computer will continue to operate but performance may be compromised.
But now the problem is, the PC is giving me error when i boot with 4 RAM sticks( in dual channel mode) in slots 1,2,3,4. The error is, "Fault in dimm 3". So does it mean that, RAM is bad or is it actually the motherboard which is faulty. The bios is detecting the RAM is slot 3, and showing the total memory of system to be 8GB is bios. But when i boot in windows 10, task manager is showing only 6GB is avialable and the rest 2GB is "HARDWARE RESERVED".
Unmatched memory modules can cause various issues. Are all your memory sticks the correct type as called for in the Service Manual - 1066MHz or 1333MHz DDR3 unbuffered SDRAM?
My T3500 was very finicky about this and my resolution was to acquire 'matched' DDR3 memory modules.
I am using RAM which qualifies the specs provided by DELL, but they are mismatched, the problem is WHICHEVER RAM stick i put in the DIMM3 slot, the error appears after POST. I read about it lastnight, it may be because of faulty MEMORY CONTROLLER in the CPU or maybe because of BENT PINS on the mmotherboard. I am going to test it tomarrow with new MATCHED ram sticks, to see if it works.
I have the same problem. Originally had 12GB(4X3) of Dell factory installed DIMM3 Unbuffered 1066 in White slots. I added 12GB(4x3) of DATARAM DIMM3 unbuffered in black slots. On first boot after I installed new RAM aget DIMM3 Failure and Non Optimized RAM configuration. BIOS recognizes 24GB of ram, but windows shows 24 GB with 8 GB hardware reserved. What happened when you got full matching set?
grysql
56 Posts
0
August 18th, 2018 19:00
Use this link to download the T3500 Service Manual: https://www.dell.com/support/home/us/en/19/product-support/product/precision-t3500/manuals
See page 74 in the Service Manual for the memory installation guide for single, dual or tri-channel module positions.
Mismatched memory modules can have an adverse affect on system performance: NOTE: A 64-bit operating system is required to support 4GB or more of system memory. Memory modules should be installed in pairs of matched memory size, speed, and technology. If the memory modules are not installed in matched pairs, the computer will continue to operate but performance may be compromised.
AteebAhmed
1 Rookie
•
4 Posts
0
August 18th, 2018 21:00
Thanks for reply,
But now the problem is, the PC is giving me error when i boot with 4 RAM sticks( in dual channel mode) in slots 1,2,3,4. The error is, "Fault in dimm 3". So does it mean that, RAM is bad or is it actually the motherboard which is faulty. The bios is detecting the RAM is slot 3, and showing the total memory of system to be 8GB is bios. But when i boot in windows 10, task manager is showing only 6GB is avialable and the rest 2GB is "HARDWARE RESERVED".
Is there any solution to this problem?
Thanks.
grysql
56 Posts
0
August 18th, 2018 22:00
Unmatched memory modules can cause various issues. Are all your memory sticks the correct type as called for in the Service Manual - 1066MHz or 1333MHz DDR3 unbuffered SDRAM?
My T3500 was very finicky about this and my resolution was to acquire 'matched' DDR3 memory modules.
AteebAhmed
1 Rookie
•
4 Posts
0
August 19th, 2018 04:00
I am using RAM which qualifies the specs provided by DELL, but they are mismatched, the problem is WHICHEVER RAM stick i put in the DIMM3 slot, the error appears after POST. I read about it lastnight, it may be because of faulty MEMORY CONTROLLER in the CPU or maybe because of BENT PINS on the mmotherboard. I am going to test it tomarrow with new MATCHED ram sticks, to see if it works.
Will post the results here.
Thanks,
Ateeb.
DSM74
1 Message
0
October 27th, 2021 13:00
I have the same problem. Originally had 12GB(4X3) of Dell factory installed DIMM3 Unbuffered 1066 in White slots. I added 12GB(4x3) of DATARAM DIMM3 unbuffered in black slots. On first boot after I installed new RAM aget DIMM3 Failure and Non Optimized RAM configuration. BIOS recognizes 24GB of ram, but windows shows 24 GB with 8 GB hardware reserved. What happened when you got full matching set?