DellPowerEdge R510 Technical Guide 426 ProcessorsR510 can operate in either single-processor or dual-processor mode. However, since the memory controlleris embedded in the processor, when only one processor is installed in the system, it supports 4 DIMMs, withminimum memory of 1GB and maximum memory of 64GB (based on the 16GB module). When two processorsare installed in the system, it supports 8 DIMMs, min. 2GB and max 128GB (based on the 16GB module).Table 13. Supported ProcessorsModel Speed Power QPI L3 Cache FeaturesDDR3MemoryBus SpeedCoresX5670 2.93GHz 95W 6.4 GT/s 12M cache Turbo, HT 1333 6X5660 2.80GHz 95W 6.4 GT/s 12M cache Turbo, HT 1333 6X5650 2.66GHz 95W 6.4 GT/s 12M cache Turbo, HT 1333 6X5560 2.80GHz 95W 6.4 GT/s 8M cache Turbo, HT 1333 4E5640 2.66GHz 80W 5.86 GT/s 12M cache Turbo, HT 1066 4L5640 2.26GHz 60W 5.86 GT/s 12M cache Turbo, HT 1066 6E5630 2.53GHz 80W 5.86 GT/s 12M cache Turbo, HT 1066 4L5609 1.86GHz 40W 4.8 GT/s 12M cache Turbo, HT 800 4E5620 2.40GHz 80W 5.86 GT/s 12M cache Turbo, HT 1066 4E5530 2.40GHz 80W 5.86 GT/s 8M cache Turbo, HT 1066 4L5520 2.26GHz 50W 5.86 GT/s 8M cache Turbo, HT 1066 4E5507 2.26GHz 80W 4.8 GT/s 4M cache — 800 4E5506 2.13GHz 80W 4.8 GT/s 4M cache — 800 4E5503 2.00GHz 80W 4.8 GT/s 4M cache — 800 2QPI or Quick Path Interconnect: A point-to-point processor interconnect developed by Intel which is defined usingGigatranfers per second (GT/s), referring to a number of data transfers or operations.Turbo: Feature that increases the speed of the processor on demand (from OS) if the CPU is operating belowpower/thermal specifications.HT: Intel Hyper-threading technology.