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Gigabyte Aero 15 Review - Better than the XPS 15?!
Gigabyte Aero 15 Review - Better than the XPS 15?!
Published: 2017/05/02
Channel: Dave Lee
Jim Jones - Gigabyte ft. Avon Carter
Jim Jones - Gigabyte ft. Avon Carter
Published: 2017/02/27
Channel: JimJonesVEVO
The Gigabyte Aero 14 Review
The Gigabyte Aero 14 Review
Published: 2016/08/23
Channel: Linus Tech Tips
Computex 2016 - Gigabyte Factory Tour
Computex 2016 - Gigabyte Factory Tour
Published: 2016/06/27
Channel: Tek Syndicate
Gigabyte Sabre 15 Review - The $999 Gaming Laptop That Isn’t Red!
Gigabyte Sabre 15 Review - The $999 Gaming Laptop That Isn’t Red!
Published: 2017/04/13
Channel: Dave Lee
¿Cómo se ensambla una Motherboard? Visita a la Fabrica de Gigabyte en Taiwán - Droga Digital
¿Cómo se ensambla una Motherboard? Visita a la Fabrica de Gigabyte en Taiwán - Droga Digital
Published: 2017/06/19
Channel: DrogaDigital
Gigabyte Sabre15 -  12JUTA-AN AJA? AAAALIG
Gigabyte Sabre15 - 12JUTA-AN AJA? AAAALIG
Published: 2017/05/04
Channel: North Boys
One on one with Mrs Gigabyte - Part 1
One on one with Mrs Gigabyte - Part 1
Published: 2017/05/07
Channel: eNCA
Gigabyte Aero 15 Review: Pure Awesomeness!
Gigabyte Aero 15 Review: Pure Awesomeness!
Published: 2017/05/19
Channel: Hardware Unboxed
NGÀY CẢ THẾ GIỚI NGỢI CA GIGABYTE MARINES QUA HIGHLIGHTS NÀY - Những Chàng Trai Vàng Của LMHT VN
NGÀY CẢ THẾ GIỚI NGỢI CA GIGABYTE MARINES QUA HIGHLIGHTS NÀY - Những Chàng Trai Vàng Của LMHT VN
Published: 2017/05/02
Channel: Liên Minh Huyền Thoại 24/7
Gigabyte Aorus M3 Review (brief, needs issues addressed)
Gigabyte Aorus M3 Review (brief, needs issues addressed)
Published: 2017/09/18
Channel: Rocket Jump Ninja
3 ways to update your GIGABYTE Motherboard BIOS
3 ways to update your GIGABYTE Motherboard BIOS
Published: 2016/05/10
Channel: GIGABYTE Brasil
HwBox | Ψάχνουμε το RGB στην GIGABYTE X299 UD4!
HwBox | Ψάχνουμε το RGB στην GIGABYTE X299 UD4!
Published: 2017/09/20
Channel: Y0UUP
A Modded PS3 or a PC!? Gigabyte Gaming GT Review
A Modded PS3 or a PC!? Gigabyte Gaming GT Review
Published: 2017/05/08
Channel: HardwareCanucks
OMG X299 MOTHERBOARDS! Gigabyte Computex 2017 Preview
OMG X299 MOTHERBOARDS! Gigabyte Computex 2017 Preview
Published: 2017/05/30
Channel: Paul's Hardware
Gigabyte AB350 Gaming WIFI ITX AM4 Motherboard Review
Gigabyte AB350 Gaming WIFI ITX AM4 Motherboard Review
Published: 2017/07/12
Channel: OC3D TV
Unlocked: GIGABYTE Marines
Unlocked: GIGABYTE Marines
Published: 2017/09/06
Channel: LoL Esports
รีวิว Gigabyte H270 Gaming 3 เกิดมาเพื่อฆ่า Z270!!
รีวิว Gigabyte H270 Gaming 3 เกิดมาเพื่อฆ่า Z270!!
Published: 2017/04/16
Channel: it-reborn
Gigabyte BRIX - A MINI Performance Monster?
Gigabyte BRIX - A MINI Performance Monster?
Published: 2017/03/16
Channel: HardwareCanucks
Preview Gigabyte Sabre 15 - Paket Komplit Yang Lebih Terjangkau (Lagi)
Preview Gigabyte Sabre 15 - Paket Komplit Yang Lebih Terjangkau (Lagi)
Published: 2017/03/30
Channel: PEMMZCHANNEL
Похоже на ИДЕАЛЬНУЮ МАТЕРИНСКУЮ ПЛАТУ ➔ Обзор Gigabyte Z270X Ultra Gaming
Похоже на ИДЕАЛЬНУЮ МАТЕРИНСКУЮ ПЛАТУ ➔ Обзор Gigabyte Z270X Ultra Gaming
Published: 2017/03/28
Channel: F.ua — О девайсах понятным языком
Quick Review Gigabyte Sabre 15! (GTX 1050 Ti) - RGB Paling Irit?
Quick Review Gigabyte Sabre 15! (GTX 1050 Ti) - RGB Paling Irit?
Published: 2017/05/19
Channel: Nerd Reviews ID
Unboxing, montaje y review: "Gigabyte GB-BXBT-2807 Brix"  - Mini PC
Unboxing, montaje y review: "Gigabyte GB-BXBT-2807 Brix" - Mini PC
Published: 2016/01/01
Channel: Comercial Geek
GTX1080 G1 GAMING from GIGABYTE - Single 8 pin power... Can it perform?
GTX1080 G1 GAMING from GIGABYTE - Single 8 pin power... Can it perform?
Published: 2016/06/17
Channel: JayzTwoCents
How to make a Motherboard - A GIGABYTE Factory Tour Video
How to make a Motherboard - A GIGABYTE Factory Tour Video
Published: 2010/07/15
Channel: OverClocking-TV
รีวิว การ์ดจอ Gigabyte ทุกรุ่น XTREME Gaming, G1,D5,OC ตั้งแต่ GTX1050//1060//1070//1080
รีวิว การ์ดจอ Gigabyte ทุกรุ่น XTREME Gaming, G1,D5,OC ตั้งแต่ GTX1050//1060//1070//1080
Published: 2017/01/26
Channel: ADBIG
How Fast is the Gigabyte GTX 1080 Xtreme Gaming?
How Fast is the Gigabyte GTX 1080 Xtreme Gaming?
Published: 2016/07/17
Channel: Paul's Hardware
Fuimos al laboratorio de Gigabyte a reparar un Motherboard
Fuimos al laboratorio de Gigabyte a reparar un Motherboard
Published: 2016/03/12
Channel: damian tiscornia
รีวิว GIGABYTE GTX1050Ti Windforce OC 4GB ตัวสองพัดลมเย็นๆ แถมโอเวอร์คล็อกมาให้จากโรงงาน
รีวิว GIGABYTE GTX1050Ti Windforce OC 4GB ตัวสองพัดลมเย็นๆ แถมโอเวอร์คล็อกมาให้จากโรงงาน
Published: 2016/12/02
Channel: ADBIG
Gigabyte Computex Booth, Factory Tour, and GIVEAWAY!
Gigabyte Computex Booth, Factory Tour, and GIVEAWAY!
Published: 2016/06/06
Channel: NCIX Tech Tips
Gigabyte GTX 1080 Ti Aorus Xtreme Review - The Best is Here
Gigabyte GTX 1080 Ti Aorus Xtreme Review - The Best is Here
Published: 2017/04/10
Channel: Tech YES City
GIGABYTE AB350 Series - AB350-GAMING 3 Motherboard Unboxing & Overview
GIGABYTE AB350 Series - AB350-GAMING 3 Motherboard Unboxing & Overview
Published: 2017/04/17
Channel: GIGABYTE
Gigabyte GTX 1050 Ti G1 Gaming - САМЫЙ ПОДРОБНЫЙ ОБЗОР
Gigabyte GTX 1050 Ti G1 Gaming - САМЫЙ ПОДРОБНЫЙ ОБЗОР
Published: 2016/11/16
Channel: Новинки IT, Обзоры компьютерной техники и периферии
Todo sobre la placa base GIGABYTE Z170X-Gaming 7
Todo sobre la placa base GIGABYTE Z170X-Gaming 7
Published: 2016/04/14
Channel: GIGABYTESPAIN
GIGABYTE GTX 1070 XTREME GAMING: ПОЛНЫЙ ЭКСТРИМ
GIGABYTE GTX 1070 XTREME GAMING: ПОЛНЫЙ ЭКСТРИМ
Published: 2016/12/08
Channel: Rozetka.ua
พรีวิว : GIGABYTE -  H170 Gaming 3
พรีวิว : GIGABYTE - H170 Gaming 3
Published: 2015/10/07
Channel: CompleteTelevision
Обзор материнской платы Gigabyte Z170X Gaming 7 ✔
Обзор материнской платы Gigabyte Z170X Gaming 7 ✔
Published: 2016/01/02
Channel: F.ua — О девайсах понятным языком
Veja como são feitas as placas gamers da Gigabyte "made in Brasil"
Veja como são feitas as placas gamers da Gigabyte "made in Brasil"
Published: 2015/02/21
Channel: Adrenaline
Gigabyte AB350N ITX Ryzen Motherboard Review
Gigabyte AB350N ITX Ryzen Motherboard Review
Published: 2017/07/07
Channel: Science Studio
Gigabyte GeForce GTX 1080 Xtreme Gaming İncelemesi
Gigabyte GeForce GTX 1080 Xtreme Gaming İncelemesi
Published: 2016/07/26
Channel: Technopat
Gigabyte Aero 15 - первый взгляд - Computex 2017
Gigabyte Aero 15 - первый взгляд - Computex 2017
Published: 2017/05/31
Channel: Keddr.com
Gigabyte Aorus K7 Review (RGB Keyboard with Cherry MX Red)
Gigabyte Aorus K7 Review (RGB Keyboard with Cherry MX Red)
Published: 2017/09/20
Channel: Rocket Jump Ninja
Сравнение Gigabyte vs MSI на примере 980 Ti. G1 Gaming vs Gaming 6G
Сравнение Gigabyte vs MSI на примере 980 Ti. G1 Gaming vs Gaming 6G
Published: 2016/01/12
Channel: Новинки IT, Обзоры компьютерной техники и периферии
AORUS GTX 1070 Gaming Box Product Walkthrough
AORUS GTX 1070 Gaming Box Product Walkthrough
Published: 2017/06/29
Channel: GIGABYTE
Tarjeta Madre Gigabyte 78LMT-USB3 para AM3+ | Review
Tarjeta Madre Gigabyte 78LMT-USB3 para AM3+ | Review
Published: 2015/08/03
Channel: Spartan Geek
Build a PC with GIGABYTE! Highlight
Build a PC with GIGABYTE! Highlight
Published: 2016/01/28
Channel: GIGABYTE
Gigabyte P34W Gaming Notebook
Gigabyte P34W Gaming Notebook
Published: 2015/03/30
Channel: Linus Tech Tips
Best Budget Gaming Ultrabook of the Year (Preview Gigabyte P34K V5)
Best Budget Gaming Ultrabook of the Year (Preview Gigabyte P34K V5)
Published: 2017/01/13
Channel: PEMMZCHANNEL
Install Windows 7 on a 170 or 270 chipset-based motherboard
Install Windows 7 on a 170 or 270 chipset-based motherboard
Published: 2017/01/24
Channel: CareyHolzman
GIGABYTE 100 Series - GA-Z170X-Gaming G1 Unboxing & Overview
GIGABYTE 100 Series - GA-Z170X-Gaming G1 Unboxing & Overview
Published: 2015/08/05
Channel: GIGABYTE Motherboards
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WIKIPEDIA ARTICLE

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Multiples of bytes
Decimal
Value Metric
1000 kB kilobyte
10002 MB megabyte
10003 GB gigabyte
10004 TB terabyte
10005 PB petabyte
10006 EB exabyte
10007 ZB zettabyte
10008 YB yottabyte
Binary
Value IEC JEDEC
1024 KiB kibibyte KB kilobyte
10242 MiB mebibyte MB megabyte
10243 GiB gibibyte GB gigabyte
10244 TiB tebibyte
10245 PiB pebibyte
10246 EiB exbibyte
10247 ZiB zebibyte
10248 YiB yobibyte

The gigabyte (/ˈɡɪɡəbt/ GIG-ə-byt or /ˈɪɡəbt/[1]) is a multiple of the unit byte for digital information. The prefix giga means 109 in the International System of Units (SI). Therefore, one gigabyte is 1000000000bytes. The unit symbol for the gigabyte is GB.

This definition is used in all contexts of science, engineering, business, and many areas of computing, including hard drive, solid state drive, and tape capacities, as well as data transmission speeds. However, the term is also used in some fields of computer science and information technology to denote 1073741824 (10243 or 230) bytes, particularly for sizes of RAM. The use of gigabyte may thus be ambiguous. Hard disk capacities as described and marketed by drive manufacturers using the standard metric definition of the gigabyte, but when a 500-GB drive's capacity is displayed by, for example, Microsoft Windows, it is reported as 465 GB, using a binary interpretation.

To address this ambiguity, the International System of Quantities standardizes the binary prefixes which denote a series of integer powers of 1024. With these prefixes, a memory module that is labeled as having the size 1GB has one gibibyte (1GiB) of storage capacity.

Definition[edit]

This 2.5 inch hard drive can hold 500 GB of data.

The term gigabyte is commonly used to mean either 10003 bytes or 10243 bytes. The latter binary usage originated as compromise technical jargon for byte multiples that needed to be expressed in a power of 2, but lacked a convenient name. As 1024 (210) is approximately 1000 (103), roughly corresponding to SI multiples, it was used for binary multiples as well.

In 1998 the International Electrotechnical Commission (IEC) published standards for binary prefixes, requiring that the gigabyte strictly denote 10003 bytes and gibibyte denote 10243 bytes. By the end of 2007, the IEC Standard had been adopted by the IEEE, EU, and NIST, and in 2009 it was incorporated in the International System of Quantities. Nevertheless, the term gigabyte continues to be widely used with the following two different meanings:

Decimal definition[edit]

  • 1 GB = 1000000000 bytes (= 10003 B = 109 B)

Based on powers of 10, this definition uses the prefix as defined in the International System of Units (SI). This is the recommended definition by the International Electrotechnical Commission (IEC).[2] This definition is used in networking contexts and most storage media, particularly hard drives, flash-based storage,[3][4] and DVDs, and is also consistent with the other uses of the SI prefix in computing, such as CPU clock speeds or measures of performance. The file manager of Mac OS X version 10.6 and later versions are a notable example of this usage in software, which report files sizes in decimal units.[5]

Binary definition[edit]

  • 1 GiB = 1073741824 bytes (= 10243 B = 230 B).

The binary definition uses powers of the base 2, as is the architectural principle of binary computers. This usage is widely promulgated by some operating systems, such as Microsoft Windows in reference to computer memory (e.g., RAM). This definition is synonymous with the unambiguous unit gibibyte.

Consumer confusion[edit]

Since the first disk drive, the IBM 350, disk drive manufacturers expressed hard drive capacities using decimal prefixes. With the advent of gigabyte-range drive capacities, manufacturers based most consumer hard drive capacities in certain size classes expressed in decimal gigabytes, such as "500 GB". The exact capacity of a given drive model is usually slightly larger than the class designation. Practically all manufacturers of hard disk drives and flash-memory disk devices[3][4] continue to define one gigabyte as 1000000000bytes, which is displayed on the packaging. Some operating systems such as OS X[6] express hard drive capacity or file size using decimal multipliers, while others such as Microsoft Windows report size using binary multipliers. This discrepancy causes confusion, as a disk with an advertised capacity of, for example, 400 GB (meaning 400000000000bytes) might be reported by the operating system as 372 GB, meaning 372 GiB.

The JEDEC memory standards use IEEE 100 nomenclature which quote the gigabyte as 1073741824bytes (230 bytes).[7]

The difference between units based on decimal and binary prefixes increases as a semi-logarithmic (linear-log) function—for example, the decimal kilobyte value is nearly 98% of the kibibyte, a megabyte is under 96% of a mebibyte, and a gigabyte is just over 93% of a gibibyte value. This means that a 300 GB (279 GiB) hard disk might be indicated variously as 300 GB, 279 GB or 279 GiB, depending on the operating system. As storage sizes increase and larger units are used, these differences become even more pronounced. Some legal challenges have been waged over this confusion such as a lawsuit against drive manufacturer Western Digital.[8][9] Western Digital settled the challenge and added explicit disclaimers to products that the usable capacity may differ from the advertised capacity.[8] Seagate was sued on similar grounds and also settled.[8][10]

Because of its physical design, the capacity of modern computer random access memory devices, such as DIMM modules, is always a multiple of a power of 1024. It is thus convenient to use prefixes denoting powers of 1024, known as binary prefixes, in describing them. For example, a memory capacity of 1073741824bytes is conveniently expressed as 1 GiB rather than as 1.074 GB. The former specification is, however, often quoted as 1 GB when applied to random access memory.[11]

Software allocates memory in varying degrees of granularity as needed to fulfill data structure requirements and binary multiples are usually not required. Other computer capacities and rates, like storage hardware size, data transfer rates, clock speeds, operations per second, etc., do not depend on an inherent base, and are usually presented in decimal units. For example, the manufacturer of a "300 GB" hard drive is claiming a capacity of 300000000000bytes, not 300x10243 (which would be 322122547200) bytes.

Examples of gigabyte-sized storage[edit]

  • One hour of SDTV video at 2.2 Mbit/s is approximately 1 GB.
  • Seven minutes of HDTV video at 19.39 Mbit/s is approximately 1 GB.
  • 114 minutes of uncompressed CD-quality audio at 1.4 Mbit/s is approximately 1 GB.
  • A single layer DVD+R disc can hold about 4.7 GB.
  • A dual-layered DVD+R disc can hold about 8.5 GB.
  • A single layer Blu-ray disc can hold about 25 GB.
  • A dual-layered Blu-ray disc can hold about 50 GB.

See also[edit]

References[edit]

  1. ^ The prefix giga may be pronounced two ways. Gigabyte - Definition and More from the Free Merriam-Webster Dictionary
  2. ^ http://physics.nist.gov/cuu/Units/binary.html Prefixes for binary multiples
  3. ^ a b SanDisk USB Flash Drive "Note: 1 megabyte (MB) = 1 million bytes; 1 gigabyte (GB) = 1 billion bytes."
  4. ^ a b Storage Chart "Megabyte (MB) = 1,000,000 bytes; 1 Gigabyte (GB) = 1,000,000,000 bytes; 1TB = 1,000,000,000,000 bytes"
  5. ^ "How Mac OS X reports drive capacity". Apple Inc. 2009-08-27. Retrieved 2009-10-16. 
  6. ^ "How OS X and iOS report storage capacity - Apple Support". support.apple.com. Retrieved 2016-06-29. 
  7. ^ JEDEC Solid State Technology Association (December 2002). "Terms, Definitions, and Letter Symbols for Microcomputers, Microprocessors, and Memory Integrated Circuits" (PDF). Jesd 100B.01. 
  8. ^ a b c Mook, Nate (2006-06-28). "Western Digital Settles Capacity Suit". betanews. Retrieved 2009-03-30. 
  9. ^ Baskin, Scott D. (2006-02-01). "Defendant Western Digital Corporation's Brief in Support of Plaintiff's Motion for Preliminary Approval". Orin Safier v. Western Digital Corporation. Western Digital Corporation. Retrieved 2009-03-30. 
  10. ^ Judge, Peter (2007-10-26). "Seagate pays out over gigabyte definition". ZDNet. Retrieved 2014-09-16. 
  11. ^ Percival, Colin. "Why is 1 GB equal to 10^9 bytes instead of 2^30?". tarsnap.com. Retrieved 1 November 2015. 

External links[edit]

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