Product comparison · 2 laptops

HP ProBook 6450b Notebook PC vs HP ProBook 6555b Notebook PC

74specifications compared
26differ
48identical
85known for one product only

Key differences

Product colour
- ProBook 6450b Notebook PC:Black, Silver
- ProBook 6555b Notebook PC:Black
Display diagonal
- ProBook 6450b Notebook PC:35.6 cm (14")
- ProBook 6555b Notebook PC:39.6 cm (15.6")
Processor model
- ProBook 6450b Notebook PC:i5-520M
- ProBook 6555b Notebook PC:N620
Processor frequency
- ProBook 6450b Notebook PC:2.4 GHz
- ProBook 6555b Notebook PC:2.8 GHz
Processor cache
- ProBook 6450b Notebook PC:3 MB
- ProBook 6555b Notebook PC:2 MB
Processor cache type
- ProBook 6450b Notebook PC:Smart Cache
- ProBook 6555b Notebook PC:L2
Internal memory
- ProBook 6450b Notebook PC:4 GB
- ProBook 6555b Notebook PC:2 GB
HDD interface
- ProBook 6450b Notebook PC:SATA
- ProBook 6555b Notebook PC:SATA II

Side by side

Differences highlightedShow differences only

Comparison of ProBook 6450b Notebook PC, ProBook 6555b Notebook PC
159 specifications	A HP ProBook 6450b Notebook PC View product	B HP ProBook 6555b Notebook PC View product
Design1 differ
Product colourDiffers	Black, Silver	Black
Country of origin	China	China
Display1 differ
Display diagonalDiffers	35.6 cm (14")	39.6 cm (15.6")
Display resolutionKnown for one	1366 x 768 pixels	Unknown — not stated by the source
LED backlight	Yes	Yes
Native aspect ratioKnown for one	16:9	Unknown — not stated by the source
Processor4 differ
Processor manufacturerKnown for one	Intel	Unknown — not stated by the source
Processor familyKnown for one	Intel® Core™ i5	Unknown — not stated by the source
Processor generationKnown for one	Intel® Core™ i5	Unknown — not stated by the source
Processor modelDiffers	i5-520M	N620
Processor coresKnown for one	2	Unknown — not stated by the source
Processor threadsKnown for one	4	Unknown — not stated by the source
Processor boost frequencyKnown for one	2.93 GHz	Unknown — not stated by the source
Processor frequencyDiffers	2.4 GHz	2.8 GHz
System bus rateKnown for one	2.5 GT/s	Unknown — not stated by the source
Processor cacheDiffers	3 MB	2 MB
Processor cache typeDiffers	Smart Cache	L2
Processor socketKnown for one	BGA 956	Unknown — not stated by the source
Processor lithographyKnown for one	32 nm	Unknown — not stated by the source
Processor operating modesKnown for one	64-bit	Unknown — not stated by the source
Processor seriesKnown for one	Intel Core i5-500 Mobile Series	Unknown — not stated by the source
Processor codenameKnown for one	Arrandale	Unknown — not stated by the source
Bus typeKnown for one	DMI	Unknown — not stated by the source
FSB ParityKnown for one	No	Unknown — not stated by the source
SteppingKnown for one	C2	Unknown — not stated by the source
Thermal Design Power (TDP)Known for one	35 W	Unknown — not stated by the source
TjunctionKnown for one	105 °C	Unknown — not stated by the source
Maximum number of PCI Express lanesKnown for one	16	Unknown — not stated by the source
PCI Express configurationsKnown for one	1x16	Unknown — not stated by the source
PCI Express slots versionKnown for one	2.0	Unknown — not stated by the source
Number of Processing Die TransistorsKnown for one	382 M	Unknown — not stated by the source
Processing Die sizeKnown for one	81 mm²	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Known for one	18	Unknown — not stated by the source
ECC supported by processorKnown for one	No	Unknown — not stated by the source
Memory1 differ
Internal memoryDiffers	4 GB	2 GB
Memory clock speed	1333 MHz	1333 MHz
Memory slots	2x SO-DIMM	2x SO-DIMM
Maximum internal memory	8 GB	8 GB
Memory upgrade	8 GB	8 GB
Storage1 differ
Total storage capacityKnown for one	320 GB	Unknown — not stated by the source
Storage mediaKnown for one	HDD	Unknown — not stated by the source
Total HDDs capacityKnown for one	320 GB	Unknown — not stated by the source
Number of HDDs installedKnown for one	1	Unknown — not stated by the source
HDD interfaceDiffers	SATA	SATA II
HDD speed	7200 RPM	7200 RPM
Optical drive type	DVD Super Multi DL	DVD Super Multi DL
Card reader integrated	Yes	Yes
Maximum HDD capacity	500 GB	500 GB
Graphics2 differ
On-board graphics cardKnown for one	Yes	Unknown — not stated by the source
Discrete graphics card	Yes	Yes
Discrete graphics card modelDiffers	Intel® HD Graphics	AMD Mobility Radeon HD 4250
Graphics card familyDiffers	Intel	AMD
On-board graphics card familyKnown for one	Intel® HD Graphics	Unknown — not stated by the source
On-board graphics card modelKnown for one	Intel® HD Graphics	Unknown — not stated by the source
On-board graphics card base frequencyKnown for one	500 MHz	Unknown — not stated by the source
On-board graphics card dynamic frequency (max)Known for one	766 MHz	Unknown — not stated by the source
Audio2 differ
Audio systemDiffers	HP Premier Sound	High Definition Audio
Number of built-in speakersKnown for one	2	Unknown — not stated by the source
Audio includedDiffers	HP Premier Sound; Integrated stereo speakers; Integrated microphone (dual-microphone array); Touch-sensitive controls	HP Premier Sound; Integrated stereo speakers; Integrated microphone; Touch-sensitive controls
Network2 differ
Mobile network connectionKnown for one	Yes	Unknown — not stated by the source
Mobile network generationKnown for one	3G	Unknown — not stated by the source
Wi-Fi	Yes	Yes
Networking featuresDiffers	Integrated Intel 82577LC Gigabit Network Connection	Integrated Marvell Gigabit Ethernet PCI Controller (10/100/1000 NIC)
Wireless technologyDiffers	Broadcom 802.11b/g/n; HP Integrated Module with Bluetooth 2.1+EDR Wireless Technology; HP Mobile Broadband (powered by Gobi) with GPS	Broadcom 802.11a/b/g/n; HP Integrated Module with Bluetooth 2.1+EDR Wireless Technology
Bluetooth	Yes	Yes
Bluetooth version	2.1+EDR	2.1+EDR
Ports & interfaces2 differ
USB 2.0 ports quantity	3	3
eSATA ports quantity	1	1
Ethernet LAN (RJ-45) ports	1	1
DisplayPorts quantity	1	1
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
Firewire (IEEE 1394) ports	1	1
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
Docking connectorDiffers	No	Yes
ExpressCard slot	Yes	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	Yes	Yes
TV-in port	No	No
TV-out	No	No
I/O portsDiffers	3 USB 2.0; 1 eSATA/USB 2.0 Combo; 1 external VGA monitor; 1 DisplayPort; 1 1394a; 1 stereo microphone in; 1 stereo headphone/line-out; 1 AC power; 1 RJ-11 (select models); 1 RJ-45; 1 docking connector; 1 secondary battery connector	3 USB 2.0; 1 eSATA/USB 2.0 Combo; 1 external VGA monitor; 1 DisplayPort; 1 1394a; 1 serial; 1 stereo microphone in; 1 stereo headphone/line-out; 1 AC power; 1 RJ-11 (select models); 1 RJ-45; 1 docking connector; 1 secondary battery connector
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	Unknown — not stated by the source	0
HDMI ports quantityKnown for one	Unknown — not stated by the source	0
Modem (RJ-11) portsKnown for one	Unknown — not stated by the source	1
PS/2 ports quantityKnown for one	Unknown — not stated by the source	0
Parallel ports quantityKnown for one	Unknown — not stated by the source	0
Serial ports quantityKnown for one	Unknown — not stated by the source	1
Performance1 differ
Motherboard chipsetDiffers	Intel® HM57 Express	AMD M880G
Keyboard1 differ
Keyboard typeDiffers	Full-sized spill-resistant keyboard with drain	Full-sized spill-resistent keyboard with drain and separate numeric keypad
Keyboard layoutKnown for one	Unknown — not stated by the source	QWERTY
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Trial softwareKnown for one	Unknown — not stated by the source	Microsoft Office Professional 2007 McAfee Total Protection WinZip 14
Bundled softwareKnown for one	Unknown — not stated by the source	HP ProtectTools Security Manager HP ProtectTools f Central Management HP Quick Launch Buttons Software HP QuickLook 3 HP QuickWeb HP Power Assistant HP Connection Manager 3.1 HP Wireless Assistant HP DayStarter
Processor special featuresidentical
Intel® Wireless Display (Intel® WiDi)Known for one	No	Unknown — not stated by the source
CPU configuration (max)Known for one	1	Unknown — not stated by the source
Embedded options availableKnown for one	Yes	Unknown — not stated by the source
Enhanced Intel SpeedStep TechnologyKnown for one	Yes	Unknown — not stated by the source
Execute Disable BitKnown for one	Yes	Unknown — not stated by the source
Graphics & IMC lithographyKnown for one	45 nm	Unknown — not stated by the source
Idle StatesKnown for one	Yes	Unknown — not stated by the source
Intel 64Known for one	Yes	Unknown — not stated by the source
Intel Clear Video TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel Demand Based SwitchingKnown for one	No	Unknown — not stated by the source
Intel Dual Display Capable TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel Enhanced Halt StateKnown for one	Yes	Unknown — not stated by the source
Intel FDI TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel Fast Memory AccessKnown for one	Yes	Unknown — not stated by the source
Intel Flex Memory AccessKnown for one	Yes	Unknown — not stated by the source
Intel Rapid Storage TechnologyKnown for one	No	Unknown — not stated by the source
Intel Trusted Execution TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel VT-x with Extended Page Tables (EPT)Known for one	Yes	Unknown — not stated by the source
Intel Virtualization Technology (VT-x)Known for one	Yes	Unknown — not stated by the source
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	Yes	Unknown — not stated by the source
Intel® AES New Instructions (Intel® AES-NI)Known for one	Yes	Unknown — not stated by the source
Intel® Anti-Theft Technology (Intel® AT)Known for one	No	Unknown — not stated by the source
Intel® Clear Video HD Technology (Intel® CVT HD)Known for one	Yes	Unknown — not stated by the source
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for one	Yes	Unknown — not stated by the source
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	Yes	Unknown — not stated by the source
Intel® InTru™ 3D TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Insider™Known for one	No	Unknown — not stated by the source
Intel® My WiFi Technology (Intel® MWT)Known for one	No	Unknown — not stated by the source
Intel® Quick Sync Video TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Turbo Boost TechnologyKnown for one	1.0	Unknown — not stated by the source
Physical Address Extension (PAE)Known for one	36 bit	Unknown — not stated by the source
Processor ARK IDKnown for one	47341	Unknown — not stated by the source
Processor package sizeKnown for one	rPGA 37.5x 37.5, BGA 34x28	Unknown — not stated by the source
Supported instruction setsKnown for one	SSE4.1/4.2	Unknown — not stated by the source
Thermal Monitoring TechnologiesKnown for one	Yes	Unknown — not stated by the source
Conflict-Free processorKnown for one	No	Unknown — not stated by the source
Batteryidentical
Number of battery cells	6	6
Poweridentical
DC-in jack	Yes	Yes
Securityidentical
Cable lock slot	Yes	Yes
Cable lock slot type	Kensington	Kensington
Security management description	HP ProtectTools Security Manager; Enhanced Pre-Boot Security; HP SpareKey; One-Step Logon; Setup Password; TPM 1.2 Embedded Security Chip; TPM Enhanced DriveLock; HP Disk Sanitizer; Lock slot; Support for Computrace LoJack Pro for HP ProtectTools	HP ProtectTools Security Manager; Enhanced Pre-Boot Security; HP SpareKey; One-Step Logon; Setup Password; TPM 1.2 Embedded Security Chip; TPM Enhanced DriveLock; HP Disk Sanitizer; Lock slot; Support for Computrace LoJack Pro for HP ProtectTools
Operational conditionsidentical
Operating temperature (T-T)	5 - 35 °C	5 - 35 °C
Operating relative humidity (H-H)	10 - 90%	10 - 90%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Weight & dimensions5 differ
WeightDiffers	2.26 kg	2.51 kg
WidthDiffers	339 mm	371.4 mm
DepthDiffers	236.2 mm	248 mm
Height (front)Differs	3.38 cm	3.48 cm
Dimensions (WxDxH)Differs	339 X 236.2 X 33.8 mm	371.4 X 248 X 34.8 mm
Hard drive1 differ
Storage drive typeDiffers	320 GB 7200 rpm SATA II	250 GB 7200 rpm SATA II
Storage drive controller	SED SATA II (7200 rpm) SATA II (7200 rpm)	SED SATA II (7200 rpm) SATA II (7200 rpm)
Other features2 differ
Infrared data port	No	No
Battery type	6-cell (55 WHr) Li-Ion	6-cell (55 WHr) Li-Ion
Minimum storage drive space	250 GB	250 GB
Power requirementsDiffers	65W HP AC Adapter; HP Fast Charge	90W HP AC Adapter; HP Fast Charge
Internal modemDiffers	No	Yes
TV tuner integrated	No	No
Intel segment tagging	Enterprise	Enterprise
Manageability features	HP 3D DriveGuard	HP 3D DriveGuard
Expansion slots	1 Express Card/54; 1 Media Card Reader An optional Integrated Smart Card Reader is available and replaces the ExpressCard/54 (or ExpressCard/34) slot.	1 Express Card/54; 1 Media Card Reader An optional Integrated Smart Card Reader is available and replaces the ExpressCard/54 (or ExpressCard/34) slot.
Supplied AC adapter type	AC	AC
Cameraidentical
Front cameraKnown for one	Unknown — not stated by the source	No
Optical driveidentical
LightScribeKnown for one	Unknown — not stated by the source	Yes

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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