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  • Clarify and change USB3.2 Gen1 cable requirements, which is needed for USB4 Gen2 operation. Based on lab test results, some of parameter limits of the specification need adjustment for USB4 Gen2 ...
  • 开博尔type-c数据线usb3.1GEN2公对公线缆评测报告 一、数据测试部分 测试硬盘:aigo SSD 1TB SN:SJOU01851 测试电脑配置: 电脑型号 联想 ThinkPad T470s W10DG 笔记本电脑 (扫描时间:2019年05月11日) 操作...

    开博尔type-c数据线usb3.1GEN2公对公线缆评测报告

    一、数据测试部分

    测试硬盘:aigo SSD 1TB  SN:SJOU01851

    测试电脑配置:

    电脑型号 联想 ThinkPad T470s W10DG 笔记本电脑  (扫描时间:2019年05月11日)

    操作系统 Windows 7 专业版 64位 SP1 ( DirectX 11 )

    处理器 英特尔 Core i5-6300U @ 2.40GHz 双核

    主板 联想 20JTS15300 ( 100 Series 芯片组 Family/eSPI Controller - 9D48 )

    内存 8 GB ( 三星 DDR4 2400MHz )

    主硬盘 NVMe SAMSUNG MZVLW256 SCSI Disk Device ( 256 GB )

    显卡 英特尔 HD Graphics 520 ( 192 MB / 联想 )

    显示器 联想 LEN40A9 ( 14 英寸  )

    声卡 瑞昱  @ 英特尔 High Definition Audio 控制器

    网卡 英特尔 Ethernet Connection I219-LM / 联想

    测试使用线缆:a.开博尔type-c数据线usb3.1GEN2公对公

                  b. TBT Cable 0.5m passive  Lenovo P/N:SC10M59508

                  c.爱国者1TB  SSD硬盘原装25cm数据线

                  d.华为Mate 20 Pro (UD)原装数据线

     

    1.测试软件:AS SSD Benchmark

    1.1 开博尔测试数据

    1.2联想原装测试数据

    1.3爱国者SSD硬盘原装测试数据

    1.4 华为手机原装测试数据

    从以上数据可以得到以下结论:

    1. type-C公对公开博尔线缆在4K与4K-64K数据的传输上与联想数据线缆差不多;
    2. tpye-C公对公但明显好于爱国者硬盘与华为原装的type-A对type-C。
    3. 线缆性能:开博尔公对公>联想公对公>爱国者SSD原装>华为手机原装

     

    1. 测试软件ATTODiskBenchmarks2.47

    2.1 开博尔测试数据

    2.2 联想测试数据

    2.3爱国者原装数据线测试结果

    2.4 华为原装测试数据

    结论:

    1. 开博尔在32K及以下数据测试结果基本上优于联想测试结果,32K以上数据联想数据线优于开博尔;
    2. 华为与爱国者原装线缆测试结果与联想与开博尔不是一个数量级;
    1. 线缆性能:联想公对公>开博尔公对公>爱国者SSD原装>华为手机原装

     

    1. 软件:CrystalDiskMark6_0_2

    3.1 开博尔测试数据

    3.2联想测试数据

    3.3爱国者原装数据线

    3.4 华为原装数据线

    在此轮测试中线缆的性能是联想原装公对公>开博尔公对公>爱国者SSD原装>华为手机原装。

    1. 数据整体评测:开博尔公对公≈联想公对公>爱国者SSD原装>华为手机原装

     

    二、外观评测

     

    线长102.5cm

    线粗(4.172cm/8)0.5215cm

    3.type-ct头外观

    3.1 公头type-c长3.102cm

    3.2公头type-c宽1.210cm

    3.3公头type-c高0.648cm

    3.4公头子尺寸如下:

    长度:0.670cm

    宽度:0.822

    厚度:0.242cm

    三、电气特性评测

    1.使用92cm左右镀银线缆测线缆压降

     

    测量压降(由于使用的是一个充电插座,故使用平均值相减):5.19-5.13=0.06V

     

    四、使用测试

    1.手机连电脑(及可以充电又可以进行不一样的数据传输体验)

    2.手机连SSD移动硬盘

    3.使用体验(使用开博尔type-c公对公SSD连电脑)传输速度飙到2.42GB/S

    4.使用开博尔type-c公对公连起电脑与联想扩展坞,实现扩屏功能

    5.其他性能

     开博尔线缆无记忆性,线缆弯曲半径3cm左右固定一分钟,后伸展开,半小时后恢复原状。

     

    所以,从前面的一些数据中来看,开博尔这款数据线性价比还是非常高的,适合一些对数据传输要求比较高的地方。

     

    展开全文
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  • Introduce proto_gen

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  • gen::inRange for doubles

    2020-12-30 10:03:16
    m trying to generate a number in between [0,1) using <code>gen::inRange<double>(0,1)</code> and I get this following error: <pre><code> ake -C .. bitcoin_test make[1]: Entering directory `/...
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