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
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
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
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
Graphics2 differ
On-board graphics cardKnown for one	Yes	Unknown — not stated by the source
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
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
Ports & interfaces2 differ
Docking connectorDiffers	No	Yes
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
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
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
Other features2 differ
Power requirementsDiffers	65W HP AC Adapter; HP Fast Charge	90W HP AC Adapter; HP Fast Charge
Internal modemDiffers	No	Yes
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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