Dell PowerEdge C6145 - Manual (Page 55)

Using the System Setup Program | 55
Option Description
DRAM Prefetcher
(Enabled default) Select this item to enable or disable DRAM Prefetcher.
Hardware Prefetcher
(Enabled default) Select this item to enable or disable the hardware
prefetcher. For UP platforms, leave it enabled; For
DP/MP servers, it may be used to tune performance to
the specific application.
Software Prefetcher
(Enabled default)
Select this item to enable or disable the HW Prefetcher
Training on Software Prefetch.
IOMMU
(Disabled default) Select this item to enable or disable the IOMMU.
L3 Power Control
(Enabled default) Select this item to enable or disable the L3 Power
Control.