HP dx7300 - Page 47

Technical Reference Guide www.hp.com 3-3
Processor/Memory Subsystem
Figure 3-2 illustrates the basic internal architecture of an Intel Pentium single-core processor.
Dual-core processors feature two cores operating in parallel. The table below provides a
representative listing of supported processors. Other models may also be supported.
Figure 3-2. Supported Pentium and Core 2 Duo Processors (partial listing)
The Intel Pentium processor increases processing speed by using higher clock speeds with
hyper-pipelined technology, therefore handling significantly more instructions at a time. The
Arithmetic Logic Units (ALUs) of all processors listed above run at twice the core speed.
An improved branch prediction mechanism features an execution trace cache and a refined
prediction algorithm. The execution trace cache can store 12 kilobytes of micro-ops (decoded
instructions dealing with branching sequences) that are checked when re-occurring branches are
processed. Code that is not executed (bypassed) is no longer stored in the L1 cache as was the
case in earlier generation Pentium processors.
The Pentium processor is compatible with software written for x86 processors. These systems
also support the Intel Celeron D processors and the energy-efficient Intel Core
TM
2 Duo
processors.
Intel Model
No.
Dual
Core?
Core
Speed
FSB
Speed
L2 Cache
Size
Hyper-Threading
Technology?
E6700 Yes
2.66 GHz 1066 MHz 4 MB No
E6600 Yes
2.40 GHz 1066 MHz 4 MB No
E6400 Yes
2.13 GHz 1066 MHz 2 MB No
E6300 Yes
1.86 G Hz 1066 MHz 2 MB No
965 Yes
3.73 GH 1066 MHz 2 x 2 MB Yes
960 Yes
3.60 GHz 800 MHz 2 x 2 MB No
955 Yes
3.46 GHz 1066 MHz 2 x 2 MB Yes
950 Yes
3.40 GHz 800 MHz 2 x 2 MB No
940 Yes
3.20 GHz 800 MHz 2 x 2 MB No
930 Yes
3.00 GHz 800 MHz 2 x 2 MB No
920 Yes
2.80 GHz 800 MHz 2 x 2 MB No
840 Yes
3.20 GHz 800 MHz 2 x 1 MB No
672 No
3.80 GHz 800 MHz 2 MB Yes
670 No
3.80 GHz 800 MHz 2 MB Yes
660 No
3.60 GHz 800 MHz 2 MB Yes
650 No
3.40 GHz 800 MHz 2 MB Yes
640 No
3.20 GHz 800 MHz 2 MB Yes
630 No
3.00 GHz 800 MHz 2 MB Yes
ALU Speed (Core speed x2)
Pentium 4 Processor
128-bit
Integer
FPU
8-K
L1
Data
Cache
L2
Adv..
Transfer
Cache
FSB
I/F
Rapid Exe. Eng.
Branch
Prediction
CPU
ALUs
16-K Execution
Trace Cache
Out-of-Order
Core
Core speed
FSB speed (max. data transfer rate)
L1
Cache
Intel Pentium Single Core Processor
ALUs