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20 Evo D310 Micro Desktop
Processor
The Compaq Evo D310 Micro Desktop is equipped with either a socket 478B
Intel Celeron or Pentium 4 processor. The processor is connected to the
system board through a Pin Grid Array (PGA) 478B Socket.
A heatsink and fan (not shown) cover the processor to prevent it from
overheating. If the heatsink is removed, the thermal interface material
between the heatsink and the processor must be replaced by a new one. If no
thermal interface is used or the old one is re-used, then cooling may be
impaired and the processor damaged.
Intel Pentium 4 (Socket 478)
The Intel Pentium 4 processor has the following features:
• Speeds ranging upto 2.4GHz
•
Data bus frequency of 400MHz
•
Dual Independent Bus architecture, which combines a dedicated 64-bit L2 cache bus (supporting
256KB or 512KB) plus a 64-bit system bus that enables multiple simultaneous transactions
• MMX2 technology, which gives higher performance for media, communications and 3D applications
• Dynamic execution to speed up software performance
• Internet Streaming SIMD Extensions 2 (SSE2) for enhanced floating point and 3D application
performance
•
Uses multiple low-power states, such as AutoHALT, Stop-Grant, Sleep and Deep Sleep to conserve
power during idle times.
The Pentium 4 processor is packaged in a pin grid array (PGA) that fits into a PGA478B socket. The
Pentium 4 integrates the following cache memories on the same die as the processor cache:
• A trace instruction and L1 data cache. The trace cache is 4-way set associative
• A 256KB or 512KB L2 cache. The L2 cache is 8-way associative.
Intel Celeron (Socket 478)
The “new” Celeron (socket 478) processor is based on the Pentium 4 architecture. It is supported by the
Intel 845GL chipset. The “new” Celeron processor also features the following:
• Processor speeds ranging from 1.7 to 1.8GHz
• Front side bus 400MHz
• 128K cache.
478B PGA
Socket