Toshiba Satellite U845-S404 (PSU4SU-00S002) - laptop specifications.
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Processor Toshiba Satellite U845-S404 (PSU4SU-00S002)
Processor speed: The clock rate typically refers to the frequency at which a chip like a central processing unit (CPU), one core of a multi-core processor, is running and is used as an indicator of the processors speed. It is measured in clock cycles per second or its equivalent, the SI unit hertz (Hz). The clock rate of the first generation of computers was measured in hertz or kilohertz (kHz), but in the 21st century the speed of modern CPUs is commonly advertised in gigahertz (GHz). This metric is most useful when comparing processors within the same family, holding constant other features that may impact performance.
Intel Core i5-3xxx
Processor: A processor is the logic circuitry that responds to and processes the basic instructions that drive a computer. The four primary functions of a processor are fetch, decode, execute and writeback.
Processor boost frequency: Turbo Boost is automatic. It will scale up the frequency by itself as and when required while keeping it from overheating. You can not control it yourself, but you do not need to, it works very reliably by reducing the frequency when you do not need it to save power and increasing it when you need it to give you more performance.
Processor core: A multi-core processor is a single computing component with two or more independent actual processing units (called "cores"), which are the units that read and execute program instructions. The instructions are ordinary CPU instructions such as add, move data, and branch, but the multiple cores can run multiple instructions at the same time, increasing overall speed for programs amenable to parallel computing. Manufacturers typically integrate the cores onto a single integrated circuit die (known as a chip multiprocessor or CMP), or onto multiple dies in a single chip package.
Processor threads: Hyper-threading was Intels first attempt to bring parallel computation to consumer PCs. It debuted on desktop CPUs with the Pentium 4 HT back in 2002. The original Pentium 4 had just a single CPU core, so it could only do one thing at a time - but hyper-threading attempted to make up for that.
System bus data transfer rate:
Processor cache: A CPU cache is a cache used by the central processing unit (CPU) of a computer to reduce the average time to access data from the main memory. The cache is a smaller, faster memory which stores copies of the data from frequently used main memory locations. Most CPUs have different independent caches, including instruction and data caches, where the data cache is usually organized as a hierarchy of more cache levels (L1, L2, etc.).
Processor socket: In computer hardware, a CPU socket or CPU slot comprises one or more mechanical components providing mechanical and electrical connections between a microprocessor and a printed circuit board (PCB). This allows for placing and replacing the CPU without soldering.
Processor cache type: CPU caches are small pools of memory that store information the CPU is most likely to need next. Which information is loaded into cache depends on sophisticated algorithms and certain assumptions about programming code. The goal of the cache system is to ensure that the CPU has the next bit of data it will need already loaded into cache by the time it goes looking for it (also called a cache hit). A cache miss, on the other hand, means the CPU has to go scampering off to find the data elsewhere. This is where the L2 cache comes into play � while it�s slower, it�s also much larger. Some processors use an inclusive cache design (meaning data stored in the L1 cache is also duplicated in the L2 cache) while others are exclusive (meaning the two caches never share data). If data can�t be found in the L2 cache, the CPU continues down the chain to L3 (typically still on-die), then L4 (if it exists) and main memory (DRAM).
Intel HM77 Express
Integrated 4G WiMAX:
Thermal Design Power (TDP):
Intel Core i5-3300 Mobile series
PCI Express configurations: PCI Express, technically Peripheral Component Interconnect Express but often seen abbreviated as PCIe or PCI-E, is a standard type of connection for internal devices in a computer. Generally, PCI Express refers to the actual expansion slots on the motherboard that accept PCIe based expansion cards and to the types of expansion cards themselves. PCI Express has all but replaced AGP and PCI, both of which replaced the oldest widely-used connection type called ISA.
1x16, 2x8, 1x8+2x4
Tjunction: Synonymous with core temperatures and calculated based on the output from the DTS using the formula shown further down in this post.
CPU multiplier (bus/core ratio):
Maximum number of PCI Express lanes:
PCI Express slots version:
Stepping: Stepping level refers to the introduction or revision of the lithographic photomask or masks within the set of plates that generate the pattern that produces an integrated circuit. The term originated from the name of the equipment ("steppers") that exposes the photoresist to light. Integrated circuits have two primary classes of mask sets, base layers that are used to build the structures that make up the logic such as transistors, and metal layers that connect the logic together.
Processor operating modes: The x86 has been extended in many ways throughout its history, remaining mostly backwards compatible while adding execution modes and large extensions to the instruction set. A modern x86 processor can operate in one of four major modes: 16-bit real mode, 16-bit protected mode, 32-bit protected mode, and 64-bit long mode. The primary difference between real and protected mode is in the handling of segments: in real mode the segments directly address memory as 16-byte pages, whereas in protected mode the segments are instead indexes into a descriptor table that contains the physical base and size of the segment. 32-bit protected mode allows paging and virtual memory as well as a 32-bit rather than a 16-bit offset.
Maximum number of SMP processors:
Conflict Free processor:
ECC supported by processor: Error-correcting code memory (ECC memory) is a type of computer data storage that can detect and correct the most common kinds of internal data corruption. ECC memory is used in most computers where data corruption cannot be tolerated under any circumstances, such as for scientific or financial computing.
Memory Toshiba Satellite U845-S404 (PSU4SU-00S002)
Internal memory: RAM (random access memory) is the place in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the devices processor. RAM is much faster to read from and write to than other kinds of storage in a computer, such as a hard disk drive (HDD), solid-state drive (SSD) or optical drive. Data remains in RAM as long as the computer is running. When the computer is turned off, RAM loses its data. When the computer is turned on again, the OS and other files are once again loaded into RAM, usually from an HDD or SSD.
Internal memory type:
Memory clock speed:
2 x 2 GB
Maximum internal memory:
Storage Toshiba Satellite U845-S404 (PSU4SU-00S002)
Total storage capacity:
Number of hard drives installed:
Hard drive capacity:
Hard disk rotational speed:
Number of SSDs installed:
Solid-state drive capacity: A solid-state drive (SSD) is a nonvolatile storage device that stores persistent data on solid-state flash memory. Solid-state drives actually are not hard drives in the traditional sense of the term, as there are no moving parts involved. A traditional hard disk drive (HDD) consists of a spinning disk with a read/write head on a mechanical arm called an actuator. An SSD, on the other hand, has an array of semiconductor memory organized as a disk drive, using integrated circuits (ICs) rather than magnetic or optical storage media. An SSD may also be referred to as a solid-state disk.
Solid-state drive interfaces:
Micro Serial ATA
Card reader integrated:
Compatible memory cards:
Memory Stick (MS), MicroSD (TransFlash), MicroSDHC, MS PRO, SD, SDHC
Display Toshiba Satellite U845-S404 (PSU4SU-00S002)
Screen Size: Display size (or viewable image size or VIS) is the physical size of the area where pictures and videos are displayed. The size of a screen is usually described by the length of its diagonal, which is the distance between opposite corners, usually in inches.
Screen Resolution: The number of horizontal and vertical pixels on a display screen. The more pixels, the more information is visible without scrolling. Screen resolutions have a pixel count such as 1600x1200, which means 1,600 horizontal pixels and 1,200 vertical pixels.
1366 x 768 pixels
Touchscreen: A touchscreen is an input device normally layered on the top of an electronic visual display of an information processing system. A user can give input or control the information processing system through simple or multi-touch gestures by touching the screen with a special stylus/pen and-or one or more fingers. Some touchscreens use ordinary or specially coated gloves to work while others use a special stylus/pen only. The user can use the touchscreen to react to what is displayed and to control how it is displayed; for example, zooming to increase the text size.
LED backlight: An LED-backlit LCD is a flat panel display which uses LED backlighting instead of the cold cathode fluorescent (CCFL) backlighting used by most other LCDs. LED-backlit LCD TVs use the same TFT LCD (thin film transistor liquid crystal display) technologies as CCFL-backlit LCD TVs. Picture quality is primarily based on TFT LCD technology, independent of backlight type.
Aspect ratio: The aspect ratio of an image describes the proportional relationship between its width and its height. It is commonly expressed as two numbers separated by a colon, as in 16:9. For an x:y aspect ratio, no matter how big or small the image is, if the width is divided into x units of equal length and the height is measured using this same length unit, the height will be measured to be y units.
Graphics Toshiba Satellite U845-S404 (PSU4SU-00S002)
On-board graphics adapter:
Discrete graphics adapter:
On-board graphics adapter family:
Intel HD Graphics
On-board graphics adapter model:
Intel HD Graphics 4000
On-board graphics adapter dynamic frequency (max):
On-board graphics adapter base frequency:
Number of displays supported (on-board graphics):
Discrete graphics adapter model:
On-board graphics adapter ID:
Maximum graphics adapter memory:
Optical Drive Toshiba Satellite U845-S404 (PSU4SU-00S002)
Optical drive type:
Audio Toshiba Satellite U845-S404 (PSU4SU-00S002)
SRS Premium Sound 3D
Number of built-in speakers:
Networking Toshiba Satellite U845-S404 (PSU4SU-00S002)
Bluetooth: Bluetooth is a radio communication technology that enables low-power, short distance wireless networking between phones, computers and other network devices. Bluetooth technology was designed primarily to support networking of portable consumer devices and peripherals that run on batteries.
3G: 3G is the third generation of wireless technologies. It comes with enhancements over previous wireless technologies, like high-speed transmission, advanced multimedia access, and global roaming. 3G is mostly used with mobile phones and handsets as a means to connect the phone to the Internet or other IP networks in order to make voice and video calls, to download and upload data and to surf the net.
Wi-Fi: Wi-Fi is the name of a popular wireless networking technology that uses radio waves to provide wireless high-speed Internet and network connections. A common misconception is that the term Wi-Fi is short for "wireless fidelity," however this is not the case. Wi-Fi is simply a trademarked phrase that means IEEE 802.11x.
Wi-Fi standards: There are a lot of different types of Wi-Fi standards used by routers and laptops, and to make matters worse, devices don’t typically complain when a sub-optimal Wi-Fi connection is made because of mis-matched Wi-Fi standards. You’ll only notice an issue when the speed and reliability of the connection isn’t as solid as you’d expected. You’ll need to investigate the problem yourself to fix it – and that means knowing a thing or two about Wi-Fi standards.
802.11b, 802.11g, 802.11n
Ethernet LAN connection:
Ethernet LAN data rates:
10, 100 Mbit/s
Ports & interfaces Toshiba Satellite U845-S404 (PSU4SU-00S002)
USB 2.0 ports quantity:
USB 3.0 (3.1 Gen 1) Type-A ports quantity:
HDMI ports quantity: Short for High Definition Multimedia Interface, HDMI is a connector and cable capable of transmitting high-quality and high-bandwidth streams of audio and video between devices. The HDMI technology is used with devices such as an HDTV, Projector, DVD player, or Blu-ray player. The picture to the right is an example of an HDMI cable.
Ethernet LAN (RJ-45) ports quantity: Registered Jack 45 (RJ45) is a standard type of physical connector for network cables. RJ45 connectors are most commonly seen with Ethernet cables and networks. Modern Ethernet cables feature small plastic plugs on each end that are inserted into RJ45 jacks of Ethernet devices. The term "plug" technically refers to the cable or "male" end of the connection while the term "jack" refers to the port or "female" end.
Keyboard Toshiba Satellite U845-S404 (PSU4SU-00S002)
Keyboard Toshiba Satellite U845-S404 (PSU4SU-00S002)
Software Toshiba Satellite U845-S404 (PSU4SU-00S002)
Operating system installed:
Windows 7 Home Premium
Operating system architecture:
Microsoft Office Starter 2010, Norton Internet Security 2012, Toshiba Online Backup
Battery Toshiba Satellite U845-S404 (PSU4SU-00S002)
Lithium Polymer (LiPo)
Number of battery cells:
Battery life (max):
Energy Management Toshiba Satellite U845-S404 (PSU4SU-00S002)
AC adapter power:
AC adapter frequency:
AC adapter input voltage:
100 - 240 V
AC adapter output current:
AC adapter output voltage:
Security Toshiba Satellite U845-S404 (PSU4SU-00S002)
Cable lock slot:
Weight & Dimensions Toshiba Satellite U845-S404 (PSU4SU-00S002)
4.1 lbs (1,86 kg)
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