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科普帖:算一算矿机芯片和矿机的生产周期(转)
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Topic: 科普帖:算一算矿机芯片和矿机的生产周期(转) (Read 3130 times)
superay
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科普帖:算一算矿机芯片和矿机的生产周期(转)
March 26, 2014, 03:23:51 AM
#1
绝大部分挖矿的矿工,都不懂芯片,天真的以为芯片只要流片了,矿机很快就可以开始挖矿了,其实不是这样的,从芯片流片到矿机挖矿还有很长很长很长的路要走,其中任何一个环节掉了链子,矿机延迟发货都是必然的结果。在时间就是金钱的挖矿世界里,矿机延期交货意味着巨大的不可控的风险。Gridchip从设计、运营Avalon第一代110nm芯片A3256开始,到2013年12月正式推出了BTC、LTC双挖芯片GC3355,团队积累了丰富的经验,在这里简单介绍一下从芯片流片到矿机量产的时间,供矿工参考。
1、芯片流片,又称Tapeout
芯片流片方式基本分两种,一种是MPW(Multi Project Wafer),就是多个芯片搭载一个晶圆进行流片,一般用于芯片验证,不能量产。如果某一个矿机芯片是MPW流片,请直接忽视。
另外一种是Full Mask或者NTO,这种是可以量产出货的。一般芯片厂商在第一次流片时,会用12片Wafer做一个工程批。只有工程批的芯片制造完、封装测试结束证明芯片可以工作了,芯片厂商才会给Foundry下正式量产的订单。这可以解释任何一款芯片,第一次量产的芯片数量都不太大,相应的矿机也不太多。
正常情况下第一次流片的周期是5~6周左右。如果是28nm的芯片,周期还要加长。
2、芯片封装、测试。2~4周左右(含物流时间)
3、芯片验证、矿机原型设计、验证:正常4~8周左右。
4、矿机量产:主要看矿机团队的供应链管理和资金状况了。第一次量产的时间基本在2周以上
总结:从芯片流片到矿机量产,一切都很理想的情况下,4个月左右。
那么有哪些因素会导致矿机跳票?
1、芯片设计失败。芯片的工艺越先进,失败的可能性越大
2、Foundry产能满,排不上生产日程。这个事情在2013年还不太严重,但是2014年Foundry尤其是台积电的产能满载,某些芯片可能排不上产能。
3、封装测试排不上产能。挖矿芯片的总量太小,并且芯片出货极不稳定,所以一般比较大的封装厂刚开始都不太愿意接这种芯片的封装订单。小厂的封装质量、产能、和周期又没有什么保证
4、物流时间延迟。这是一个很容易忽略的问题,但是实际上很多家矿机芯片厂家都在这上面吃过亏,甚至吃了大亏。节假日对物流是有很大影响的
5、选错了封装类型。这会导致散热性能弱,或者封装周期变长。
6、买不到矿机物料,尤其是几个关键的物料。这些物料平时的供应量不大,现在被全世界的矿机厂家疯抢,缺货是正常并且完全合理的。不排除订货量小、实力弱的矿机厂家买不到想要的关键物料。在矿机中,缺一个关键物料,和缺少挖矿芯片的结果是一样的。
7、矿机研发时间不可控。毕竟矿机是个技术活,任何的技术研发遇到困难都是正常的。研发人员也是普通人,会犯各种各样不可预期的错误。做为矿工虽然很着急拿到能够稳定工作的矿机,但是该等还要等。
在矿机量产以前,有太多的因素会导致矿机延期,而这些因素当中芯片和矿机团队能够完全掌控的事情其实并不多。只要矿机没有大规模量产并销售,时间永远是个未知数。
转自wiibox社区 作者:GridSeed
new coin
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Re: 科普帖:算一算矿机芯片和矿机的生产周期(转)
March 26, 2014, 06:01:21 AM
#2
工艺必然是个大问题
difiberg
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Re: 科普帖:算一算矿机芯片和矿机的生产周期(转)
September 20, 2016, 12:28:21 PM
#3
学习了,不看还真不知道有这个关系,赞。
btcside888
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Re: 科普帖:算一算矿机芯片和矿机的生产周期(转)
September 22, 2016, 03:36:38 PM
#4
主要还是不准时发货吧,这点挺恶心的,像期货
ddscoin
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Re: 科普帖:算一算矿机芯片和矿机的生产周期(转)
October 12, 2016, 02:51:44 AM
#5
芯片流片方式基本分两种,一种是MPW(Multi Project Wafer),就是多个芯片搭载一个晶圆进行流片,一般用于芯片验证,不能量产。如果某一个矿机芯片是MPW流片,请直接忽视
rn80151557lei
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Re: 科普帖:算一算矿机芯片和矿机的生产周期(转)
March 06, 2017, 08:42:41 AM
#6
Quote from: difiberg on September 20, 2016, 12:28:21 PM
学习了,不看还真不知道有这个关系,赞。
这个叼。不过现在挖矿不流行了吧
Jenny Moll
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Re: 科普帖:算一算矿机芯片和矿机的生产周期(转)
March 17, 2017, 05:28:45 AM
#7
很好的科普文章,感谢分享了。想不到小小的矿机芯片,要成为矿机,实现挖矿,竟然需要这么多的流程。如果生产周期延迟,还会导致严重的后果。长知识了!矿机延迟,新的矿机又会研发,总是跟不上节奏啊。
coin163
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dApps Development Automation Platform
Re: 科普帖:算一算矿机芯片和矿机的生产周期(转)
April 18, 2017, 03:25:53 AM
#8
干这一行的不是一般人呐。
https://bitcointalk.org/index.php?topic=5245436.0
Disposable surgical Face Mask with CE, FDA Approved for sell.
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