Help Me Choose: Memory


Random Access Memory (RAM) — commonly known as system memory — is the temporary storehouse for the data flowing to and from your computer's central processing unit (CPU). The most common forms of random access memory today, DRAM and SRAM, both require continual power to maintain their data. All else being equal, a system with more memory can:

  • Deliver faster performance
  • Handle more open files simultaneously
  • Open larger files
  • Work with more open applications simultaneously

Memory utilization is impacted by the operating system installed on your Dell™ OptiPlex™ system.

With 32-bit operating systems, such as the 32-bit version of Microsoft® Windows® 7, the system may utilize up to 3.5GB of memory for system performance (out of 4GB), while the remaining 0.5GB is allocated to address space for various hardware components.

64-bit operating systems can utilize more than 4GB of system memory. The maximum memory available on Dell OptiPlex systems is 32GB on the OptiPlex 9010 MT, DT and SFF versions. 64-bit operating systems require applications designed for 64-bit. Majority of business applications today are designed for 32-bit. However, the trend will continue toward 64-bit operating systems, as system memory plays a greater role in application performance.

Memory modules should be installed in pairs of matched sizes, speed and technology. Pairs of matched memory size are also referred to as dual-channel configurations, which yield the highest performance. If the memory modules are not installed in matched pairs, the computer will continue to operate, but with a slight reduction in performance.

The system you are configuring may or may not include all of the options listed here.

If you want... Choose... 
The maximum amount of memory for 64-bit operating systems32GB memory on 9010 MT/DT/SFF only;

16GB on 7010 and 9010 AIO/USFF; 8GB on 3010
The ability to run simultaneous intensive business applications, with headroom for future operating systems and applications16GB memory; 8GB on 3010
The ability to run multiple simultaneous office applications8GB memory
The ability to run business productivity applications4GB memory

OptiPlex™ 9010 AIO9010 7010 3010 990790 390 
Number of DIMMs24 (2 on USFF) 4 (2 on USFF) 24 (2 on USFF)  4 (2 on USFF)
32GB 1600MHz DDR3 Non-ECC SDRAM* NoYes No No   
16GB 1600MHz DDR3 Non-ECC SDRAM*YesYes YesNo    
8GB 1600MHz DDR3 Non-ECC SDRAM*YesYes Yes Yes   
6GB 1600MHz DDR3 Non-ECC SDRAM*YesYes Yes Yes   
4GB 1600MHz DDR3 Non-ECC SDRAM*YesYes Yes Yes   
 2GB 1600MHz DDR3 Non-ECC SDRAM* Yes Yes YesYes    
16GB 1333MHz DDR3 Non-ECC SDRAM    Yes Yes  No
8GB 1333MHz DDR3 Non-ECC SDRAM     YesYes  Yes
6GB 1333MHz DDR3 Non-ECC SDRAM     Yes Yes Yes
4GB 1333MHz DDR3 Non-ECC SDRAM     Yes Yes Yes
2GB 1333MHz DDR3 Non-ECC SDRAM     YesYes  Yes