Why My Precision Workstation T1650 Won't Post, Boot, or Recognize Memory Correctly after Upgrading Memory
Summary:This article contains information regarding why my Precision Workstation T1650 won't POST, boot, or recognize memory correctly after upgrading the memory.
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The Precision T1650 supports up to 32 GB of memory of either ECC (Error Checking and Correction) or non-ECC DIMMs. The following chart provides supported memory population configurations:
The version of Windows installed on the T1650 will also affect the amount of memory the operating system can recognize. 32-bit versions of Windows will only recognize a maximum of 4 GB of memory, and there are further limitations with some 64-bit versions of Windows. Check the memory limits for the different versions of Windows to ensure your version of Windows is able to fully utilize the memory upgrade.
When memory modules of different speeds are installed, all DIMMs will operate at the speed of the slowest installed DIMM. For example, if the system includes a mixed configuration of 1333MHZ and 1600MHZ memory modules, the overall system memory access speed will be 1333MHZ.
The performance speed of the memory also depends on the type and model of processor (CPU) installed in the system. Only quad core processors can support memory speeds up to 1600MHZ. A memory module rated at 1600MHZ will run at a reduced speed when paired with a processor that doesn't support it. The chart below outlines the processors that were offered for the Precision T1650 and the memory speeds each processor supports: