CORSAIR Vengeance RGB Pro 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 4000 (PC4 32000) AMD Optimized Desktop Memory Model CMW16GX4M2Z4000C16

Name: CORSAIR Vengeance RGB Pro 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 4000 (PC4 32000) AMD Optimized Desktop Memory Model CMW16GX4M2Z4000C16
SKU: N82E16820236779
Price: 9869925 VND
Availability: InStock

SKU: N82E16820236779Thương hiệu: KHAC

Còn hàng· Giao hàng sau 3 ngày

9.869.925 ₫

Giá chưa gồm VAT 8% · Đã gồm VAT: 10.659.519 ₫ / sản phẩm

Điện ước tính: 86 kWh/tháng · ~280.800 ₫/thángTính TCO chi tiết

Tạm tính: 9.869.925 ₫

Bảo hành 36 tháng

Chính hãng

Giao sau 3 ngày

Toàn quốc

Hỗ trợ kỹ thuật

24/7 qua hotline

Hoá đơn VAT

Đầy đủ, đúng hạn

Mua càng nhiều, giá càng tốt

Bảng đơn giá theo số lượng đặt mua
Số lượng	Đơn giá	Tiết kiệm
1–2 máy	9.869.925 ₫	—
3–9 máy	9.573.827 ₫	−3%
từ 10 máy	9.277.730 ₫	−6%

Giá trên chưa gồm VAT. Đơn từ 20 máy trở lên hoặc kèm dịch vụ triển khai, gọi 1900 636 106 để có mức riêng.

Máy lắp vừa linh kiện này

tham khảo theo thông số trên tên hàng

Mô tả sản phẩm

#overview-content .a_plus_content:before,
#overview-content .a_plus_content:after,
#overview-content .a_plus_group:before,
#overview-content .a_plus_group:after,
#overview-content .a_plus_module:before,
#overview-content .a_plus_module:after,
#overview-content .a_plus_info:after {content: ”; display: table; clear: both;}
#overview-content table .supermicro_style {background-color:#3C8EDF; color:white; border:none; column-span: all;}
#overview-content table .td1 {font-weight:bold;}
#overview-content .center {text-align:center;}

/* entire article */
#overview-content .a_plus_content {font:14.3px arial,helvetica,sans-serif; line-height: 1.4285em; max-width:1280px;}

/* youtube video */
#overview-content .youtube {padding-bottom: 56.25%;position: relative;}
#overview-content .elementor_video_iframe {max-width: 100%;width: 100%;border: none;position: absolute;height: 100%;}

/* logo */
#overview-content .a_plus_content .logovc {width:100%; height:20px; margin-bottom:10px; background:url(00-000-238/banner.png) no-repeat center center;}

/* Add pictures before something
#overview-content .featurevc:before {content: url(00-000-238/banner.png;}
*/

/* titles */
#overview-content .a_plus_content .a_plus_title {margin: 1em 0 0.5em 0;}
#overview-content .a_plus_content .text1 {font-weight:bold; font-size:1.25em; line-height: 1.4285em;}
#overview-content .a_plus_content .text2 {font-size:2em; font-weight:bold; line-height: 1.4285em;}
#overview-content .a_plus_content .text3 {font-size:1.3em; font-weight:bold; line-height: 1.4285em;}
#overview-content .a_plus_content .text3_normal {font-size:1.3em; font-weight:normal; line-height: 1.4285em;}
#overview-content .a_plus_content .text4 {font-size:1.4em; font-weight:bold; line-height: 1.4285em; text-shadow:-1px -1px 0 #fff, 1px -1px 0 #fff, -1px 1px 0 #fff, 1px 1px 0 #fff;}
#overview-content .a_plus_content .text5 {font-size:25px; font-weight:bold; line-height: 1.4285em;}

/* Sellpoints */
#overview-content .feature_detail {font-size:1.6em;text-align:center; padding:30px; text-align:center; margin-bottom:10px; background-color:#C4AE89; color:white; }
#overview-content .feature_detail span {padding:0 15px ; border-right:2px solid white; line-height:1.8em;}
#overview-content .feature_detail span:last-child {border-right:none;}

/* divider */
#overview-content .a_plus_content .section_head {border-bottom: 1px solid #000000; color:#ffffff; clear: both; height:28px; margin:20px auto; width: 100%; text-align:center; margin-top:3em;}
#overview-content .a_plus_content .section_head span {background-color:#000000; font-size:1.6em; line-height:42px; padding:5px 23px; }
#overview-content .a_plus_content .section_head {font-size:2.0em; text-align:center; padding:30px; text-align:center; margin-bottom:10px; background-color:#008ea0; color:white;}
#overview-content .a_plus_content .dividervc {width:50%; height:1em; border-top:0.2em solid #d4d4d4; margin:0.3em auto;}

#overview-content.sku-00-000-238 * { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box;}

/* several columns */
#overview-content .a_plus_content .feature_block {display:inline-block; width:49%; min-width:300px; margin:0 0 40px; padding:0; vertical-align:top;}
#overview-content .a_plus_content .feature_block img {width:300px; margin-bottom:10px;text-align:center;}
#overview-content .a_plus_content .feature_block p {text-align:center; width:300px; margin:auto;}

/* image list */
#overview-content .a_plus_content .txt_align_center img {margin:5px; max-width:95%;}

/* general */
#overview-content .a_plus_module {position: relative; margin: 3em 0; padding: 0; overflow: hidden;}
#overview-content .a_plus_module_columns {position: relative; margin: 0em 0; padding: 0; overflow: hidden;}

#overview-content .a_plus_img {margin: 0 auto; padding: 0;}
#overview-content .a_plus_img img {display: block; margin: auto; max-width: 100%;}
#overview-content img {max-width:100%;}

#overview-content .a_plus_info.center {text-align:center;}

/*
#overview-content .a_plus_img + .a_plus_info { margin: 1em 0 0 0; }
*/

#overview-content .a_plus_info p {display: block; margin: 0.5em 0;}
#overview-content .a_plus_info ul { margin: 0em 0 0 0; }

#overview-content .a_plus_module:first-child,
#overview-content .a_plus_title:first-child,
#overview-content .a_plus_info p:first-child { margin-top: 0; }

#overview-content .a_plus_title:last-child,
#overview-content .a_plus_info p:last-child { margin-bottom: 0; }

#overview-content .a_plus_content .txt_align_center { text-align: center; }
#overview-content .a_plus_content .txt_align_left {text-align:left;}
#overview-content .a_plus_content .txt_align_left img {margin:5px; max-width:95%;}
#overview-content .a_plus_content .clearvc {width:100%; clear:both; margin:0 auto;}

/* group */
#overview-content .a_plus_group { margin: 3em 0; }
#overview-content .a_plus_group:first-child { margin-top: 0; }
#overview-content .a_plus_group:last-child { margin-bottom: 0; }
#overview-content .a_plus_group .a_plus_cell .a_plus_info {margin-top:0.5em; text-align:center;}
#overview-content .a_plus_group .a_plus_cell .a_plus_info p{margin:0.1em 0 0.3em 0;}

/* table styles
#overview-content.sku-00-000-238 table {width: 100%; border-collapse: collapse;}
*/

/* Zebra striping
#overview-content.sku-00-000-238 tr:nth-of-type(odd) {background: #eee;}
#overview-content.sku-00-000-238 th {background: #333; color: white; font-weight: bold; }
#overview-content.sku-00-000-238 td,
*/

/*
#overview-content.sku-00-000-238 th {padding: 6px; border: 1px solid #ccc; text-align: left;}
*/

/* note */
#overview-content .has_note {font-size:1.1em; font-weight:bold; text-align:left;}
#overview-content .note_detail {font-size:0.9em; font-style:italic; text-align:left;}

#overview-content .a_plus_cell {text-align:left;}

#overview-content .bgcolor1 {background-color:#04113b;}
#overview-content .bgcolor2 { background-color:black;}
#overview-content .bgcolor3 { background-color:#659747;}
#overview-content .bgcolor4 { background-color:#1657e7;}

@media (min-width: 768px) {

/* image at left in a container */
#overview-content .a_plus_img.img_left img,
#overview-content .img_left img
{display: block; margin-left:0; max-width: 100%;}

/*
#overview-content .a_plus_info:nth-of-type(1) {width:95%; margin:0 auto;}
*/

#overview-content .img_full img {width:100%;}
#overview-content .w95 {width:95%; margin-left: auto; margin-right: auto;}
#overview-content .a_plus_info:nth-of-type(1) {width:95%; margin:0 auto;}
#overview-content .intro .a_plus_info {width:95%; margin:0 auto;}
#overview-content .a_plus_module.width_full .a_plus_info:nth-of-type(1) {width:100%; margin:0 auto;}
#overview-content .a_plus_info.text_center {text-align:center;}

/* ??? background:rgba(0,0,0,0.5); padding:20px; */
#overview-content .a_plus_content .space0 {margin-top:0;}
#overview-content .a_plus_content .space0b {margin-bottom:0;}
#overview-content .position1
{position:absolute; margin:0; left:2.5%; top:35%; width:40%; color:white;}
#overview-content .position2
{position:absolute; margin:0; right:2.5%; top:35%; width:40%; color:white;}
#overview-content .position3
{position:absolute; margin:0; left:2.5%; bottom:15%; width:40%; color:white;}
#overview-content .position4
{position:absolute; margin:0; right:2.5%; bottom:15%; width:40%; color:white;}
#overview-content .position5
{position:absolute; margin:0; left:20%; top:4%; width:60%; color:white; text-align:center;}
#overview-content .position6
{position:absolute; margin:0; left:20%; bottom:20%; width:60%; color:white; text-align:center;}

#overview-content .pic_1 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_2 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_3 {position:absolute; margin:0; left:2.5%; top:15%; width:40%; #overview-content .pic_4 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_5 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_6 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_7 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_8 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_9 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_10 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_11 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_12 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_13 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_14 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_15 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_16 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_17 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_18 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_19 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; #overview-content .pic_20 {position:absolute; margin:0; left:2.5%; top:35%; width:40%; color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}
color:white;}

/* ???? */
#overview-content .a_plus_module.img_at_left {width:95%; margin:auto auto;}
#overview-content .a_plus_module.img_at_right {width:95%; margin:auto auto;}
#overview-content .a_plus_module.img_at_left.width_full {width:100%; }
#overview-content .a_plus_module.img_at_right.width_full {width:100%; }

#overview-content .a_plus_module.img_at_left .a_plus_img { float: left; }
#overview-content .a_plus_module.img_at_right .a_plus_img { float: right; }

#overview-content .a_plus_module.img_at_left.width1 .a_plus_img { margin-right: 2.5%; }
#overview-content .a_plus_module.img_at_right.width1 .a_plus_img { margin-left: 2.5%; }

#overview-content .a_plus_module.img_at_left.width2 .a_plus_img + .a_plus_info { margin: 0 0 0 496px; }
#overview-content .a_plus_module.img_at_right.width2 .a_plus_img + .a_plus_info { margin: 0 496px 0 0; }

#overview-content .a_plus_module.img_at_left.width2s > .a_plus_img { float: left; width:39.4737%; padding-right:1.25%;}
#overview-content .a_plus_module.img_at_left.width2s > .a_plus_img + .a_plus_info { float:left; width:60.5263%; padding-left:1.25%; }
#overview-content .a_plus_module.img_at_right.width2s > .a_plus_img { float: right; width:39.4737%; padding-left:1.25%;}
#overview-content .a_plus_module.img_at_right.width2s > .a_plus_img + .a_plus_info { float:right; width:60.5263%; padding-right:1.25%; }

#overview-content .a_plus_module.img_at_left.width3 > .a_plus_img { float: left; width:66.66666%; padding-right:0.8333%;}
#overview-content .a_plus_module.img_at_left.width3 > .a_plus_img + .a_plus_info { float:left; width:33.3333%; padding-left:1.6666%; }
#overview-content .a_plus_module.img_at_right.width3 > .a_plus_img { float: right; width:66.66666%; padding-left:0.8333%;}
#overview-content .a_plus_module.img_at_right.width3 > .a_plus_img + .a_plus_info { float:right; width:33.3333%; padding-right:1.6666%; }

#overview-content .a_plus_module.img_at_left.width4 > .a_plus_img { float: left; width:75%; padding-right:0.625%;}
#overview-content .a_plus_module.img_at_left.width4 > .a_plus_img + .a_plus_info { float:left; width:25%; padding-left:1.875%; }
#overview-content .a_plus_module.img_at_right.width4 > .a_plus_img { float: right; width:75%; padding-left:0.625%;}
#overview-content .a_plus_module.img_at_right.width4 > .a_plus_img + .a_plus_info { float:right; width:25%; padding-right:1.875%; }

#overview-content .a_plus_module.img_at_left.width5 > .a_plus_img { float: left; width:50%; }
#overview-content .a_plus_module.img_at_left.width5 > .a_plus_img + .a_plus_info { float:left; width:50%; padding-left:2.5%; }
#overview-content .a_plus_module.img_at_right.width5 > .a_plus_img { float: right; width:50%; }
#overview-content .a_plus_module.img_at_right.width5 > .a_plus_img + .a_plus_info { float:right; width:50%; padding-right:2.5%; }

#overview-content .a_plus_module.img_at_right.version1 .a_plus_img { width: 30%; }
#overview-content .a_plus_module.img_at_left.version1 .a_plus_img + .a_plus_info { margin-left: calc(30% + 32px); }
#overview-content .a_plus_module.img_at_right.version1 .a_plus_img + .a_plus_info { margin-right: calc(30% + 32px); }

/* ???? */
#overview-content .a_plus_group {width:95%; margin:0 auto;}
#overview-content .a_plus_group.width_full {width:100%; }

#overview-content .a_plus_group.img_left .a_plus_cell .a_plus_img img {margin-left:0;}
#overview-content .a_plus_group.text_left .a_plus_cell .a_plus_info {text-align:left!important;}

#overview-content .a_plus_cell { float: left; }
#overview-content .a_plus_cell .a_plus_module.img_at_left .a_plus_img,
#overview-content .a_plus_cell .a_plus_module.img_at_right .a_plus_img { width: 30%; }
#overview-content .a_plus_cell .a_plus_module.img_at_left .a_plus_img + .a_plus_info { margin-left: calc(30% + 10px); text-align:left;}
#overview-content .a_plus_cell .a_plus_module.img_at_right .a_plus_img + .a_plus_info { margin-right: calc(30% + 10px); }

/* 2 columns for hlighlights 326.4px */
#overview-content .a_plus_group.two_columns .a_plus_cell:nth-child(1) {width:50%; padding-right:1.25%; }
#overview-content .a_plus_group.two_columns .a_plus_cell:nth-child(2) {width:50%; padding-left:1.25%; }

/* 2 columns for screenshot */
#overview-content .a_plus_group.two_columns.screenshot .a_plus_cell:nth-child(1) {width:50%; padding-right:0.5em; }
#overview-content .a_plus_group.two_columns.screenshot .a_plus_cell:nth-child(2) {width:50%; padding-left:0.5em; }

#overview-content .a_plus_group.two_columns.version1 .a_plus_cell {width:50%; padding:0; margin:0;}

/* 3 columns 405.33376px, content box size */

#overview-content .a_plus_group.three_columns .a_plus_cell:nth-child(1) {width:33.3333%; padding-right:1.6666%;}
#overview-content .a_plus_group.three_columns .a_plus_cell:nth-child(2) {width:33.3333%; padding-left:0.8333%; padding-right:0.8333%;}
#overview-content .a_plus_group.three_columns .a_plus_cell:nth-child(3) {width:33.3333%; padding-left:1.6666%;}

/* 4 columns */
#overview-content .a_plus_group.four_columns .a_plus_cell:nth-child(1) {width:25%; padding-right:1.875%;}
#overview-content .a_plus_group.four_columns .a_plus_cell:nth-child(2) {width:25%; padding-left:0.625%; padding-right:1.25%;}
#overview-content .a_plus_group.four_columns .a_plus_cell:nth-child(3) {width:25%; padding-left:1.25%; padding-right:0.625%;}
#overview-content .a_plus_group.four_columns .a_plus_cell:nth-child(4) {width:25%; padding-left:1.875%;}

/* 5 columns */
#overview-content .a_plus_group.five_columns .a_plus_cell:nth-child(1) {width:20%; padding-right:2%;}
#overview-content .a_plus_group.five_columns .a_plus_cell:nth-child(2) {width:20%; padding-left:0.5%; padding-right:1.5%;}
#overview-content .a_plus_group.five_columns .a_plus_cell:nth-child(3) {width:20%; padding-left:1%; padding-right:1%;}
#overview-content .a_plus_group.five_columns .a_plus_cell:nth-child(4) {width:20%; padding-left:1.5%; padding-right:0.5%;}
#overview-content .a_plus_group.five_columns .a_plus_cell:nth-child(5) {width:20%; padding-left:2%;}

/* 6 columns */
#overview-content .a_plus_group.six_columns .a_plus_cell:nth-child(1) {width:16.6666%; padding-right:2.0833%;}
#overview-content .a_plus_group.six_columns .a_plus_cell:nth-child(2) {width:16.6666%; padding-left:0.4166%; padding-right:1.6666%;}
#overview-content .a_plus_group.six_columns .a_plus_cell:nth-child(3) {width:16.6666%; padding-left:0.8333%; padding-right:1.25%;}
#overview-content .a_plus_group.six_columns .a_plus_cell:nth-child(4) {width:16.6666%; padding-left:1.25%; padding-right:0.8333%;}
#overview-content .a_plus_group.six_columns .a_plus_cell:nth-child(5) {width:16.6666%; padding-left:1.6666%; padding-right:0.4166%;}
#overview-content .a_plus_group.six_columns .a_plus_cell:nth-child(6) {width:16.6666%; padding-left:2.0833%;}

}

@media (max-width: 767px) {
#overview-content .a_plus_info:nth-of-type(1) {padding:0.5em; margin:0.5em auto;}

#overview-content .a_plus_group .a_plus_cell { margin: 3em 1em; text-align:center;}
#overview-content .a_plus_group .a_plus_cell:first-child { margin-top: 0; }
#overview-content .a_plus_group .a_plus_cell:last-child { margin-bottom: 0; }

/* for screenshot */
#overview-content .a_plus_group.screenshot .a_plus_cell { margin: 0em 0.5em; text-align:center;}
#overview-content .a_plus_group.screenshot .a_plus_cell:last-child { margin-top: 1em; }

/* for left & right float */
#overview-content .a_plus_module.img_at_left .a_plus_info {padding:0.5em 1em 3em!important; text-align:center;}
#overview-content .a_plus_module.img_at_right .a_plus_info {padding:0.5em 1em 3em!important; text-align:center;}

/* has background */
#overview-content .position1 {padding:0.5em 1em 3em; text-align:center;}
#overview-content .position2 {padding:0.5em 1em 3em; text-align:center;}
#overview-content .position3 {padding:0.5em 1em 3em; text-align:center;}
#overview-content .position4 {padding:0.5em 1em 3em; text-align:center;}
#overview-content .position5 {padding:0.5em 1em 3em; text-align:center;}

#overview-content [class*=”position”] {padding:0.5em 1em 3em; text-align:center;}
#overview-content [class*=”pic_”] {padding:0.5em 1em 3em; text-align:center;}
}

/* space */
#overview-content .a_plus_content .space0 {margin-top:0;}
#overview-content .a_plus_content .space05 {margin-top:0.5em;}
#overview-content .a_plus_content .space1 {margin-top:1em;}
#overview-content .a_plus_content .space2 {margin-top:2em;}
#overview-content .a_plus_content .space3 {margin-top:3em;}
#overview-content .a_plus_content .space0b {margin-bottom:0;}
#overview-content .a_plus_content .space05b {margin-bottom:0.5em;}
#overview-content .a_plus_content .space1b {margin-bottom:1em;}
#overview-content .a_plus_content .space2b {margin-bottom:2em;}
#overview-content .a_plus_content .space3b {margin-bottom:3em;}

CORSAIR Vengeance RGB Pro

Crafted using custom PCB and carefully screened ICs, the Vengeance RGB Pro delivers best-in-class performance, reliability and stability. Its built-in LED lights up your PC with mesmerizing dynamic multi-zone RGB lighting. The Vengeance RGB Pro also supports CORSAIR iCUE software and Intel XMP 2.0, making it easy to customize the lighting and tweak performance.

VISUALIZE, SYNCHRONIZE, MEMORIZE

CORSAIR VENGEANCE RGB PRO Series DDR4 overclocked memory lights up your PC with mesmerizing, dynamic individually addressable RGB lighting, while delivering the best DDR4 performance.

INTELLIGENT CONTROL,
UNLIMITED POSSIBILITIES

Control and customize each individual LED for nearly unlimited RGB lighting effects.

Powerful CORSAIR iCUE software brings your system to life with dynamic RGB lighting control, synchronized across all your iCUE compatible products, including memory, fans, RGB LED light strips, keyboards, mice and more.

Customize dozens of preset lighting profiles, or assign colors to individual LEDs on multiple lighting layers to create something all your own. The only limit is your imagination.

STYLE MEETS SPEED

VENGEANCE RGB PRO Series performance PCB is custom designed and extensively tested to provide absolutely zero compromise between style and speed. Optimized for high-frequency performance on the latest Intel and AMD DDR4 motherboards, each module is built using carefully screened ICs for extended overclocking potential.

DYNAMIC MULTI-ZONE

10 ultra-bright RGB LEDs per module light up your system. Let your imagination run wild and create your own unique patterns and effects with complete control over each individual LED.

Learn more about the Corsair CMW16GX4M2Z4000C16

Model
Brand	CORSAIR
Series	Vengeance RGB Pro
Model	CMW16GX4M2Z4000C16

Details
Capacity	16GB (2 x 8GB)
Type	288-Pin PC RAM
Speed Speed	DDR4 4000 (PC4 32000)
CAS Latency CAS Latency	16
Timing Timing	16-16-16-36
Voltage Voltage	1.40V
Chipset	Intel XMP 2.0
Color	Black
Heat Spreader	Anodized Aluminum
Features	Dynamic Multi-Zone RGB Lighting 10 Ultra-bright RGB LEDs per module. Next Generation Software Take control in CORSAIR iCUE software and synchronize lighting with other CORSAIR RGB products, including CPU coolers, keyboards and fans. Custom Performance PCB Provides the highest signal quality for the greatest level of performance and stability. Tightly Screened Memory Carefully screened ICs for extended overclocking potential. Maximum Bandwidth and Tight Response Times Optimized for peak performance on the latest Intel and AMD DDR4 motherboards. No Wires Required Requires no extra wires or cables for a clean and seamless install. Maximum bandwidth and tight response time Optimized on the latest AMD and Intel DDR4 motherboards. Supports XMP 2.0 A single BIOS setting is all that’s required to set your memory to its ideal performance settings, for for optimum performance.
Recommend Use	AMD B550 / AMD X570
LED Color	RGB