Intel Celeron 420 vs Pentium 4 2.8 GHz

Mini Review

Intel Celeron 420 advantages

The Intel Celeron 420 supports Execute disable bit feature, that can protect from some types of computer viruses. This technology does not work on older operating systems, like Windows 2000, MAC OS 9, and earlier ones.
The processor incorporates Intel 64 feature, that allows it to run 64-bit operating systems.
The Intel Celeron 420 has SSSE3 instructions.
The CPU is 61% more energy efficient.

Intel Pentium 4 2.8 GHz advantages

The CPU includes Hyper-Threading technology, which allows each CPU core to process two threads simultaneously.
Operating frequency of the Intel Pentium 4 2.8 GHz is higher than the frequency of the Celeron 420 CPU.

Celeron 420 vs Pentium 4 2.8 GHz specifications comparison

The charts below compare the most important Pentium 4 2.8 GHz and Celeron 420 characteristics. These features, as well as an IPC (instructions per cycle) number, determine how well a CPU performs. The "Number of cores / threads" graph shows the number of cores (darker area). Lighter area on the graph represents the number of additional threads, provided by Hyper-Threading technology.

The number of cores / threads

3
2.4
1.8
1.2
0.6
0

1

2

Higher is better

Operating frequency

4
3.2
2.4
1.6
0.8
0

1.6GHz

2.8GHz

Higher is better

Thermal Design Power

100
80
60
40
20
0

35W

89W

Lower is better

- Intel Celeron 420 - Intel Pentium 4 2.8 GHz

Please see the "Specifications" tab for detailed side by side comparison of 420 vs Intel specs. Even more detailed comparison of internal features of both processors is located in the "CPUIDs" tab.

Pros and Cons summary


Celeron 420	Pentium 4 2.8 GHz
General recommendations: Offers partial virus protection, Supports 64-bit operating system, Significantly lower power consumption	General recommendations: Supports more simultaneous threads, Much higher base frequency
Drawbacks: Handles fewer threads, Base frequency is lower	Drawbacks: Less energy efficient

Where to buy

These CPUs are obsolete. For that reason the best place to find them is eBay.

Specifications

	Intel Celeron 420	Intel Pentium 4 2.8 GHz
	Basic details
Market segment	Desktop
Manufacturer	Intel
Family	Intel Celeron	Intel Pentium 4
Model number	420
CPU part number	HH80557RG025512	RK80546PG0721M
Box part number	BX80557420 BXC80557420	BX80546PG2800E
Introduction date		February 2, 2004

	CPU features
Core name	Conroe-L	Prescott
Microarchitecture	Core	Netburst
Technology (micron)	0.065	0.09
Data width (bits)	64	32
Socket	Socket 775	Socket 478
Frequency (MHz)	1600	2800
Bus speed (MHz)	800
Clock Multiplier	8	14
L1 cache	32 KB (code) / 32 KB (data)	16 KB (data)
L2 cache (KB)	512	1024
Max temperature (°C)	60.4	69.1
TDP (Watt)	35	89
Max power dissipation (Watt)	49.98	100.39
Core voltage (V)	1 - 1.3375	1.25 - 1.4
Cores	1
Threads	1	2

	Instruction set extensions
AMD64 / EM64T 64-bit technology	+	-
MMX	+
SSE	+
SSE2	+
SSE3	+
SSSE3 / Supplemental SSE3	+	-

	Supported technologies
Hyper-Threading	-	+
Virus Protection / Execute Disable bit	+	-

	Integrated Graphics
GPU Type	None

	Integrated Memory Controller(s)
The number of controllers	0

Notes:

Rows with different specifications or features are highlighted.

For detailed specifications of "Intel Celeron 420" or "Intel Pentium 4 2.8 GHz" parts please click on the links in the table header.

CPUIDs

The table below compares two random CPUID records for Intel Celeron 420 and Intel Pentium 4 2.8 GHz microprocessors, that were submitted to our CPUID database. Please note that different steppings of Intel processors, identified by S-spec numbers or CPUID, may have slightly different features. For that reason the comparison table below only applies to CPUs with specific S-Spec number / CPUID.

CPUID 1 CPUID 2

Manufacturer Intel

CPU Family Celeron Pentium 4

Model / Processor Number 420 2.80 GHz

Frequency 2793 MHz

CWID version 0.2 0.3

Part number HH80557RG025512 RK80546PG0721M

S-Spec / Stepping Code SL9XP SL7E3

General information

Vendor GenuineIntel

Processor name (BIOS) Intel(R) Celeron(R) D CPU 420 @ 1.60GHz Intel(R) Pentium(R) 4 CPU 2.80GHz

Cores 1

Logical processors 1 2

Processor type Original OEM Processor

CPUID signature 10661 F34

Family 6 (06h) 15 (0Fh)

Model 22 (016h) 3 (03h)

Stepping 1 (01h) 4 (04h)

TLB/Cache details 64-byte Prefetching
Data TLB: 4-KB Pages, 4-way set associative, 256 entries
Data TLB: 4-MB Pages, 4-way set associative, 32 entries
Instruction TLB: 2-MB pages, 4-way, 8 entries or 4M pages, 4-way, 4 entries
Instruction TLB: 4-KB Pages, 4-way set associative, 128 entries
L1 Data TLB: 4-KB pages, 4-way set associative, 16 entries
L1 Data TLB: 4-MB pages, 4-way set associative, 16 entries Data TLB: 4-KB or 4-MB pages, fully associative, 64 entries
Instruction TLB: 4-KB, 2-MB or 4-MB pages, fully associative, 64 entries
No 2nd-level cache or, if processor contains a valid 2nd-level cache, no 3rd-level cache

Cache

L1 data: Associativity 8-way set associative

L1 data: Comments sectored cache

L1 data: Line size 64 bytes

L1 data: Size 32 KB 16 KB

L1 instruction: Associativity 8-way set associative

L1 instruction: Line size 64 bytes

L1 instruction: Size 32 KB 12K uops

L2: Associativity 2-way set associative 8-way set associative

L2: Comments sectored cache

L2: Line size 64 bytes

L2: Size 512 KB 1 MB

Instruction set extensions

MMX +

SSE +

SSE2 +

SSE3 +

SSSE3 + -

Additional instructions

CLFLUSH +

CMOV +

CMPXCHG16B + -

CMPXCHG8B +

FXSAVE/FXRSTORE +

MONITOR/MWAIT +

SYSENTER/SYSEXIT +

Major features

64-bit / Intel 64 + -

Hyper-Threading Technology - +

NX bit/XD-bit + -

On-chip Floating Point Unit +

Other features

36-bit page-size extensions +

64-bit debug store +

Advanced programmable interrupt controller +

CPL qualified debug store +

Debug store +

Debugging extensions +

Digital Thermal Sensor capability + -

L1 context ID - +

LAHF / SAHF support in 64-bit mode + -

Machine check architecture +

Machine check exception +

Memory-type range registers +

Model-specific registers +

Page attribute table +

Page global extension +

Page-size extensions (4MB pages) +

Pending break enable +

Perfmon and Debug capability + -

Physical address extensions +

Self-snoop +

Thermal monitor +

Thermal monitor 2 + -

Thermal monitor and software controlled clock facilities +

Time stamp counter +

Virtual 8086-mode enhancements +

xTPR Update Control +

+ - feature is supported
- - feature is not supported
Features, not supported by all processors in the table, are not displayed

Compare with ...

Compare Intel Celeron 420 with...

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Compare Intel Pentium 4 2.8 GHz with...

Other Celeron CPU:

Note: To see differences with any CPU, type in any combination of the following into the "Any CPU" field: manufacturer name, full or partial family name, model number, part number, core name, socket name, operating frequency, bus speed (must have FSB suffix), and the last level cache. Here are some valid searches:

i5-3570K
Intel Celeron 2 GHz
Ivy Bridge
Pentium 4 800FSB
AMD 3.3GHz 8MB

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Last modified: 13 May 2013