The Intel 82845G Northbridge is covered by a cosmetically re-designed EPoX-branded heat-sink, or heat-spreader rather. During tests, the heat-sink did get warm, but it was never too hot to touch. Moreover, there was an absence of thermal compound beneath the heat-sink, which reinforces claims that this Northbridge does not require an active cooling implementation. However, from an enthusiast's view, it is reassuring to see a fan cooling an overclocked Northbridge. Beneath the heat-sink is an Intel Northbridge that resembles a smaller-died FCPGA processor. The chip markings are like that of an Intel CPU too:

The Intel 82845G Northbridge is a revision of the proven i845 chipset. also houses three important chipset components:
The Graphic Memory Controller Hub (GMCH) provides the interconnect between the DDR SDRAM and the system logic.
The I/O Controller Hub (ICH4) provides the I/O subsystem with access to the rest of the system. Additionally, it integrates many I/O functions, such as USB, Ultra ATA, LAN, etc.
The Firmware Hub (FWH) component is a key element to enabling a new security and manageability infrastructure for the PC platform. The device operates under the FWH interface and protocol. The hardware features of this device include a unique Random Number Generator (RNG), register-based locking, and hardware-based locking.