HP EliteBook 8540w vs HP EliteBook 8540w + U4415A

Comparison of EliteBook 8540w, EliteBook 8540w + U4415A

131 specifications	A HP EliteBook 8540wView product	B HP EliteBook 8540w + U4415AView product
Designidentical
Product colour	Black, Silver	Black, Silver
Country of origin	China	China
Displayidentical
Display diagonal	39.6 cm (15.6")	39.6 cm (15.6")
Display resolution	1600 x 900 pixels	1600 x 900 pixels
HD type	HD+	HD+
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Processoridentical
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™ i5	Intel® Core™ i5
Processor generation	Intel® Core™ i5	Intel® Core™ i5
Processor model	i5-520M	i5-520M
Processor cores	2	2
Processor threads	4	4
Processor boost frequency	2.93 GHz	2.93 GHz
Processor frequency	2.4 GHz	2.4 GHz
System bus rate	2.5 GT/s	2.5 GT/s
Processor cache	3 MB	3 MB
Processor cache type	Smart Cache	Smart Cache
Processor socket	BGA 956	BGA 956
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor series	Intel Core i5-500 Mobile Series	Intel Core i5-500 Mobile Series
Processor codename	Arrandale	Arrandale
Bus type	DMI	DMI
FSB Parity	No	No
Stepping	C2	C2
Thermal Design Power (TDP)	35 W	35 W
Tjunction	105 °C	105 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurations	1x16	1x16
PCI Express slots version	2.0	2.0
Number of Processing Die Transistors	382 M	382 M
Processing Die size	81 mm²	81 mm²
CPU multiplier (bus/core ratio)	18	18
ECC supported by processor	No	No
Memoryidentical
Internal memory	4 GB	4 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory clock speed	1333 MHz	1333 MHz
Maximum internal memory	8 GB	8 GB
Storageidentical
Total storage capacity	320 GB	320 GB
HDD interface	SATA II	SATA II
HDD speed	7200 RPM	7200 RPM
Optical drive type	DVD Super Multi DL	DVD Super Multi DL
Card reader integrated	Yes	Yes
Graphicsidentical
On-board graphics card	Yes	Yes
Discrete graphics card	Yes	Yes
Discrete graphics card model	NVIDIA® Quadro® FX 880M	NVIDIA® Quadro® FX 880M
Graphics card family	NVIDIA	NVIDIA
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card model	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card base frequency	500 MHz	500 MHz
On-board graphics card dynamic frequency (max)	766 MHz	766 MHz
Audioidentical
Audio system	High Definition Audio	High Definition Audio
Number of built-in speakers	2	2
Optical driveidentical
LightScribe	Yes	Yes
Networkidentical
Wi-Fi	Yes	Yes
Networking features	Gigabit	Gigabit
Bluetooth	Yes	Yes
Bluetooth version	2.1+EDR	2.1+EDR
Ports & interfacesidentical
USB 2.0 ports quantity	2	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2	2
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 connector	Yes	Yes
ExpressCard slot	Yes	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	Yes	Yes
Modem (RJ-11) ports	1	1
TV-in port	No	No
TV-out	No	No
Performanceidentical
Motherboard chipset	Intel® QM57 Express	Intel® QM57 Express
Keyboardidentical
Pointing device	Touchpad	Touchpad
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Processor special featuresidentical
Intel® Wireless Display (Intel® WiDi)	No	No
CPU configuration (max)	1	1
Embedded options available	Yes	Yes
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Graphics & IMC lithography	45 nm	45 nm
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	Yes	Yes
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	Yes	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI Technology	Yes	Yes
Intel Fast Memory Access	Yes	Yes
Intel Flex Memory Access	Yes	Yes
Intel Rapid Storage Technology	No	No
Intel Trusted Execution Technology	Yes	Yes
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes	Yes
Intel® AES New Instructions (Intel® AES-NI)	Yes	Yes
Intel® Anti-Theft Technology (Intel® AT)	No	No
Intel® Clear Video HD Technology (Intel® CVT HD)	Yes	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	Yes	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Quick Sync Video Technology	No	No
Intel® Turbo Boost Technology	1.0	1.0
Physical Address Extension (PAE)	36 bit	36 bit
Processor ARK ID	47341	47341
Processor package size	rPGA 37.5x 37.5, BGA 34x28	rPGA 37.5x 37.5, BGA 34x28
Supported instruction sets	SSE4.1/4.2	SSE4.1/4.2
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	No	No
Batteryidentical
Number of battery cells	8	8
Battery life (max)	5.5 h	5.5 h
Poweridentical
DC-in jack	Yes	Yes
Securityidentical
Cable lock slot	Yes	Yes
Cable lock slot type	Kensington	Kensington
Weight & dimensionsidentical
Weight	2.95 kg	2.95 kg
Width	373.5 mm	373.5 mm
Depth	251.5 mm	251.5 mm
Height (front)	3.24 cm	3.24 cm
Other featuresidentical
Infrared data port	No	No
Internal modem	Yes	Yes
TV tuner integrated	No	No
Intel segment tagging	Enterprise	Enterprise
Supplied AC adapter type	AC	AC

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.