stephenyeong's blog » 超頻 http://www.stephenyeong.idv.hk/wp Blog about my IT life Mon, 06 Feb 2012 13:41:52 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Galaxy GPU Party 2010 worklog http://www.stephenyeong.idv.hk/wp/2010/12/galaxy-gpu-party-2010-worklog/ http://www.stephenyeong.idv.hk/wp/2010/12/galaxy-gpu-party-2010-worklog/#comments Mon, 13 Dec 2010 14:22:35 +0000 stephenyeong http://www.stephenyeong.idv.hk/wp/?p=695

1/12 – 忙完公司PROJECT, 終於要準備Galaxy GPU Party.

試新VMOD方法，試跑一次1200MHz 以上 – P26449
CB/CBB=-80C

4/12 – Benny 測 2號GTX460, 過唔到1160MHz
6/12 – 再測 2號GTX460, CB/CBB=-76C, 用了新MOD法也過唔到1200, 大約1190MHz.
8/12 – 未找到新改法…
9/12 – 收到風Nick又加張GTX480PCB到460上… 有點壓力
9/12 11:00pm – 找到CB,CBB 個Mod 法, -130度也可以開機, 但ColdSlow 還未能解決. (Flash 錯了未FIX COLDSLOW的BIOS)
10/12 1:00am – 對比TeamChina早前SEND過來的GA-N460SOC BIOS, 找到疑似ColdSlow 修改方法
10/12 3:00pm – 在荃灣集合
11/12 12:00 – 第一次試無ColdSlow的GTX460

]]> http://www.stephenyeong.idv.hk/wp/2010/12/galaxy-gpu-party-2010-worklog/feed/ 0 GOOC 2010 – Taipai http://www.stephenyeong.idv.hk/wp/2010/10/gooc2010/ http://www.stephenyeong.idv.hk/wp/2010/10/gooc2010/#comments Tue, 19 Oct 2010 03:27:35 +0000 stephenyeong http://www.stephenyeong.idv.hk/wp/?p=681

結婚太忙了, 今日才有時間UPLOAD 9月的GOOC 2010 相片到自己個BLOG

]]> http://www.stephenyeong.idv.hk/wp/2010/10/gooc2010/feed/ 0 其實點解用LN2超頻 http://www.stephenyeong.idv.hk/wp/2010/08/ln2overclocking/ http://www.stephenyeong.idv.hk/wp/2010/08/ln2overclocking/#comments Mon, 16 Aug 2010 08:41:20 +0000 stephenyeong http://www.stephenyeong.idv.hk/wp/?p=671

LN2 = Liquid N2 (因為 Nitrogen molecule 是兩個Nitrogen Atom 所組成)

由於LN2 的沸點 (Boring point) 是攝氏 -195.79度，
而N2汽化熱 (Heat of vaporization) 是5.56kJ.mod-1。

在理想的情況下

  • 蒸發1公升的LN2所帶走的熱能, 能令2kg的銅下降攝氏208度
  • 要令1kg 的銅由25C 下降至 -180C 只需0.49公升的LN2

計算工式都幾深…..

Nitrogen
Heat of vaporization是5.56kJ.mod-1
Standard atomic weight = 14.00067g.mol-1, N2即大約28g. mol-1。
即是每 28.01g 的 LN2 蒸發就會帶走 5.56kJ的能量。
1 公升LN2 重0.808kg
即是,
蒸發 1L LN2可帶走5.56kJ.mod-1 * (808g/ 28g.mod-1) = 160.45kJ的能量。
蒸發 1kg LN2可帶走5.56kJ.mod-1 * (1000g/ 28g.mod-1) = 198.6kJ的能量。

Copper
銅的Specific heat capacity = 24.440J.mol-1.K-1、atomic weight 63.546g. mol-1。
即是Specific heat capacity/kg = ( 1000g / 63.54g. mol-1 ) * 24.440J.mod-1. K-1
= 384.6J. kg-1K-1

Vaporize 1L LN2 on Copper surface
要令1kg 的銅由25C 下降至 -180C 所需LN2 = (25+180) * 384.6 / 160450 = 0.49Liter

Reference
http://en.wikipedia.org/wiki/Nitrogen
http://en.wikipedia.org/wiki/Copper
http://www.uigi.com/nitrogen.html

]]> http://www.stephenyeong.idv.hk/wp/2010/08/ln2overclocking/feed/ 0 GO OC 2010 中國區決賽 http://www.stephenyeong.idv.hk/wp/2010/06/go-oc-2010-cn/ http://www.stephenyeong.idv.hk/wp/2010/06/go-oc-2010-cn/#comments Tue, 29 Jun 2010 01:31:20 +0000 stephenyeong http://www.stephenyeong.idv.hk/wp/?p=635

日期: 2010-06-25
時間: 9:00到, 10:00發硬件, 13:00午飯, 14:00 開始 (實際開始時間約14:20)

硬件
CPU: Intel Core i7 980X ES
RAM: 三條 Corsair CMGTX3 – DOMINATOR GTX, 2GB (1x2GB), 2400MHz, 9-11-9-27
MB: Gigabyte GA-X58A-UD7
HDD: WD 320GB
Power: Corsair HX1000
Graphics: Zotac ECO GeForce GTS 250

還有…
大會主持: 兜兜 Blog link

]]> http://www.stephenyeong.idv.hk/wp/2010/06/go-oc-2010-cn/feed/ 1 Type T thermocouple http://www.stephenyeong.idv.hk/wp/2010/06/t-thermocouple/ http://www.stephenyeong.idv.hk/wp/2010/06/t-thermocouple/#comments Thu, 10 Jun 2010 04:36:16 +0000 stephenyeong http://www.stephenyeong.idv.hk/wp/?p=591

今日收到了新訂的4條Type T sensor。今次連 Plug 買，貴多$30 ( HKD 80.44一條 )。

但個Plug用料比預期好，原來連接腳也是同樣物料以確保温度準確。

Wikipeida Thermocouple
Type T (copper–constantan) thermocouples are suited for measurements in the −200 to 350 °C range. Often used as a differential measurement since only copper wire touches the probes. Since both conductors are non-magnetic, there is no Curie point and thus no abrupt change in characteristics. Type T thermocouples have a sensitivity of about 43 µV/°C.

]]> http://www.stephenyeong.idv.hk/wp/2010/06/t-thermocouple/feed/ 0 Testing an old Display Card http://www.stephenyeong.idv.hk/wp/2010/06/testing-an-old-display-card/ http://www.stephenyeong.idv.hk/wp/2010/06/testing-an-old-display-card/#comments Fri, 04 Jun 2010 04:31:08 +0000 stephenyeong http://www.stephenyeong.idv.hk/wp/?p=587

幫人試水冷頭, XSPC D 頭好難上…..

]]> http://www.stephenyeong.idv.hk/wp/2010/06/testing-an-old-display-card/feed/ 1 HKEPC Tech Day 2009 http://www.stephenyeong.idv.hk/wp/2009/12/hkepc-tech-day-2009/ http://www.stephenyeong.idv.hk/wp/2009/12/hkepc-tech-day-2009/#comments Tue, 22 Dec 2009 04:49:33 +0000 stephenyeong http://www.stephenyeong.idv.hk/wp/?p=276

第一次參與HKEPC的Tech Day

 除左有少少OVERRUN之外, 整體上感覺很好.

]]> http://www.stephenyeong.idv.hk/wp/2009/12/hkepc-tech-day-2009/feed/ 0 影馳2009年嘉年華剪影 http://www.stephenyeong.idv.hk/wp/2009/12/galaxy-gpu-party-2009/ http://www.stephenyeong.idv.hk/wp/2009/12/galaxy-gpu-party-2009/#comments Wed, 16 Dec 2009 18:04:19 +0000 stephenyeong http://www.stephenyeong.idv.hk/wp/?p=258 ]]> http://www.stephenyeong.idv.hk/wp/2009/12/galaxy-gpu-party-2009/feed/ 0 GALAXY超頻比賽總決賽2009 http://www.stephenyeong.idv.hk/wp/2009/12/prepare-for-galaxy-gpu-party-2009/ http://www.stephenyeong.idv.hk/wp/2009/12/prepare-for-galaxy-gpu-party-2009/#comments Sun, 06 Dec 2009 16:20:07 +0000 stephenyeong http://www.stephenyeong.idv.hk/wp/?p=244

太多修改要準備了.

]]> http://www.stephenyeong.idv.hk/wp/2009/12/prepare-for-galaxy-gpu-party-2009/feed/ 0 Gigabyte GTX275 SOC http://www.stephenyeong.idv.hk/wp/2009/11/gigabyte-gtx275-soc/ http://www.stephenyeong.idv.hk/wp/2009/11/gigabyte-gtx275-soc/#comments Wed, 25 Nov 2009 15:48:44 +0000 stephenyeong http://www.stephenyeong.idv.hk/wp/?p=239 ]]> http://www.stephenyeong.idv.hk/wp/2009/11/gigabyte-gtx275-soc/feed/ 1