HP Compaq d330 DT User Manual

Technical Reference Guide
Figure 3-2 illustrates the internal architecture of the Pentium 4 processor.
FSB speed (max. data transfer rate)
Core speed
Out-of-Order
Core
16-K Execution
Trace Cache
Branch
Prediction
Rapid Exe. Eng.
ALUs
FSB
I/F
L2
Adv..
Transfer
Cache
8-K
L1
Data
Cache
128-bit
Integer
FPU
CPU
Pentium 4 Processor
ALU Speed (Core speed x2)
Pentium 4 Type Core Speed ALU Speed FSB Speed L2 Cache Size
3.20 3.20 GHz 6.4 GHz 800 MHz 512 KB
3.06 3.06 GHz 6.12 GHz 533 MHz 512 KB
3.00 3.00 GHz 6.0 GHz 800 MHz 512 KB
2.80 2.80 GHz 5.6 GHz 800 MHz 512 KB
2.80 2.80 GHz 5.6 GHz 533 MHz 512 KB
2.66 2.66 GHz 5.3 GHz 533 MHz 512 KB
2.60 2.60 GHz 5.2 GHz 800 MHz 512 KB
2.60 2.60 GHz 5.2 GHz 400 MHz 512 KB
2.53 2.53 GHz 5.1 GHz 533 MHz 512 KB
2.40 2.40 GHz 4.8 GHz 800 MHz 512 KB
2.40B 2.40 GHz 4.8 GHz 533 MHz 512 KB
2.40 2.40 GHz 4.8 GHz 400 MHz 512 KB
2.26 2.26 GHz 4.4 GHz 533 MHz 512 KB
2.20 2.20 GHz 4.4 GHz 400 MHz 512 KB
2A 2.00 GHz 4.0 GHz 400 MHz 512 KB
2.0 2.00 GHz 4.0 GHz 400 MHz 256 KB
1.90 1.90 GHz 3.8 GHz 400 MHz 256 KB
1.80 1.80 GHz 3.6 GHz 400 MHz 256 KB
1.70 1.70 GHz 3.4 GHz 400 MHz 256 KB
1.6 1.60 GHz 3.2 GHz 400 MHz 256 KB
Figure 3–2. Pentium 4 Processor Internal Architecture
The Pentium 4 increases processing speed with higher clock speeds made possible with hyper-
pipelined technology that can handle significantly more instructions at a time. The Pentium 4
features a branch prediction mechanism improved with the addition of 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 the Pentium III.
The front side bus (FSB) of the Pentium 4 uses a 100- or 133-MHz clock but provides bi- and
quad-pumped transfers through the use of 2x and 4x-MHz strobes. The Pentium 4 can transfer a
complete 64-byte cache line in two 133-MHz bus cycles for a throughput rate of 4.2 GB/s.
Address information is transferred at a 2x rate.
hp compaq d330 and d530 Series Personal Computers
Featuring the Intel Pentium 4 Processor
First Edition - June 2003
3-3

HP Compaq d330 DT Specifications

General

Brand	HP
Model	Compaq d330 DT
Category	Desktop
Language	English