{"id":2482,"date":"2013-06-06T10:00:07","date_gmt":"2013-06-06T14:00:07","guid":{"rendered":"http:\/\/blog.nccomputertech.com\/?p=2482"},"modified":"2013-06-06T10:00:07","modified_gmt":"2013-06-06T14:00:07","slug":"password-crackers-go-green-by-immersing-their-gpus-in-mineral-oil","status":"publish","type":"post","link":"https:\/\/nccomputertech.com\/techtalk\/2013\/06\/06\/password-crackers-go-green-by-immersing-their-gpus-in-mineral-oil\/","title":{"rendered":"Password crackers go green by immersing their GPUs in mineral oil"},"content":{"rendered":"<p style=\"text-align:center;\"><a href=\"http:\/\/arstechnica.com\/security\/2013\/06\/password-crackers-go-green-by-immersing-their-gpus-in-mineral-oil\/\"><img data-recalc-dims=\"1\" height=\"370\" width=\"640\" decoding=\"async\" alt=\"Password crackers go green by immersing their GPUs in mineral oil | Ars Technica\" src=\"http:\/\/nccomputertech.files.wordpress.com\/2013\/06\/immersion-cooled-gpu-rig-640x370.jpg?resize=640%2C370\" \/><\/a><\/p>\n<p>Going where few password crackers have gone before, a team of security consultants has deployed a cracking-optimized computer that&#8217;s completely submerged in mineral oil. Members say the setup offers significant cost savings compared with the same machine that uses air to stay cool.<br \/>\nThe rig contains two AMD Radeon 6990 graphics cards, long considered a workhorse for password crackers. While the parallel processing in just one of these $800 cards can make as many as 9 billion password guesses each second (see PC3 in the graph at the bottom of this page), the performance comes at a price. GPUs run extremely hot, particularly when combined with other graphics cards, which drives up the cost of keeping them cool enough to run without burning out. The dedicated fans normally used to keep them cool also generate plenty of noise.<br \/>\nEmployees of security consultancy KoreLogic recently deployed the password cracker at Midas Green Tech, an Austin, Texas-based data center that specializes in so-called immersion-cooled server hosting. Unlike the other air-cooled systems KoreLogic uses to test the strength of clients&#8217; password policies, the cost of hosting it is less than $60 per month, compared to about $100 for an air-cooled system, said Rick Redman, one of the KoreLogic penetration testers who deployed the new machine.<br \/>\n&#8220;I&#8217;ve got this machine. It&#8217;s overheating,&#8221; Redman said. &#8220;It&#8217;s pumping out all this power. I don&#8217;t want to run it in my house because it&#8217;s too noisy and my wife complains. It&#8217;s noisy like you wouldn&#8217;t believe.&#8221; What&#8217;s more, it would require about $60 per month worth of electricity to run it at home, he estimated.<br \/>\nSubmerging the cards in mineral oil is &#8220;quote unquote green,&#8221; Redman told Ars. &#8220;Because I don&#8217;t have to worry about air flow, I can compact them together and make them so much tighter, so I can save space and use less energy and pay less money. It&#8217;s cheaper and it&#8217;s better and it&#8217;s safer for my computer. It&#8217;s illogical for me not to do it.&#8221;<br \/>\nWhen the same machine was air-cooled, Redman said it was &#8220;overheating drastically,&#8221; even though it ran the GPUs at one of their factory-set speeds as opposed to being &#8220;overclocked to run faster.&#8221; The Radeon 6990, as opposed to many other AMD GPU models, is known to run hot.<br \/>\nFull Story: <a href=\"http:\/\/arstechnica.com\/security\/2013\/06\/password-crackers-go-green-by-immersing-their-gpus-in-mineral-oil\/\" target=\"_blank\">Password crackers go green by immersing their GPUs in mineral oil | Ars Technica<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Going where few password crackers have gone before, a team of security consultants has deployed a cracking-optimized computer that&#8217;s completely [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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official: Malicious hackers have crappy password hygiene, too","author":"NCCT","date":"June 12, 2014","format":false,"excerpt":"Given the amount of time malicious hackers spend bypassing other people's security, you might think that they pay close attention to locking down their own digital fortresses. It turns out that many of them don't, according to a recent blog post documenting some of their sloppiest password hygiene. The post\u2026","rel":"","context":"In &quot;Security&quot;","block_context":{"text":"Security","link":"https:\/\/nccomputertech.com\/techtalk\/category\/security\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/nccomputertech.com\/techtalk\/wp-content\/uploads\/2014\/06\/sewer-640x480.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/nccomputertech.com\/techtalk\/wp-content\/uploads\/2014\/06\/sewer-640x480.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/nccomputertech.com\/techtalk\/wp-content\/uploads\/2014\/06\/sewer-640x480.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":8972,"url":"https:\/\/nccomputertech.com\/techtalk\/2016\/07\/07\/this-week-in-computer-hardware-371-rx-480-power-issues-disappear\/","url_meta":{"origin":2482,"position":1},"title":"This Week in Computer Hardware 371: RX 480 Power Issues Disappear","author":"NCCT","date":"July 7, 2016","format":false,"excerpt":"https:\/\/youtu.be\/kXma7yIs-GI Hosts: Ryan Shrout, Allyn Malventano Ryan Shrout and Allyn Malventano discuss how 16.7.1 Driver fixes power consumption issues with AMD's RX 480 graphics cards, the verdict on the Lenovo ThinkPad X1 Yoga, the announcement of NVIDIA's GeForce GTX 1060, the continuing scarcity of recent AMD\/NVIDIA GPUs, a Radeon 490\u2026","rel":"","context":"In &quot;Hardware&quot;","block_context":{"text":"Hardware","link":"https:\/\/nccomputertech.com\/techtalk\/category\/hardware\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/kXma7yIs-GI\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2995,"url":"https:\/\/nccomputertech.com\/techtalk\/2013\/07\/22\/ars-technica-system-guide-july-2013\/","url_meta":{"origin":2482,"position":2},"title":"Ars Technica System Guide: July 2013","author":"NCCT","date":"July 22, 2013","format":false,"excerpt":"Compared to the massive, across the board shakeups seen in some updates, this iteration of the System Guide looks pretty straightforward. The new System Guide accounts for a significant jump in graphics performance and the continuing evolution of faster CPUs, but the effects are limited. Small but significant product changes\u2026","rel":"","context":"In &quot;Hardware&quot;","block_context":{"text":"Hardware","link":"https:\/\/nccomputertech.com\/techtalk\/category\/hardware\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":8989,"url":"https:\/\/nccomputertech.com\/techtalk\/2016\/07\/28\/this-week-in-computer-hardware-374-surprise-gpus-people\/","url_meta":{"origin":2482,"position":3},"title":"This Week in Computer Hardware 374: Surprise GPUs People!","author":"NCCT","date":"July 28, 2016","format":false,"excerpt":"https:\/\/youtu.be\/wE12Ir2ODyU Hosts: Ryan Shrout, Patrick Norton Ryan Shrout and Patrick Norton discuss NVIDIA's New Titan X with 3,584 CUDA cores, rumors of Nintendo's next console using NVIDIA Tegra graphics, AMD's blue Radeon Pro SSG, a RapidSpar Data Recovery Instrument review, an Angelbird Wings PX1 Heatsink PCIe Adapter review,","rel":"","context":"In &quot;Hardware&quot;","block_context":{"text":"Hardware","link":"https:\/\/nccomputertech.com\/techtalk\/category\/hardware\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/wE12Ir2ODyU\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":7464,"url":"https:\/\/nccomputertech.com\/techtalk\/2015\/01\/19\/travelers-beware-hackers-are-after-your-information\/","url_meta":{"origin":2482,"position":4},"title":"Travelers beware: Hackers are after your information","author":"NCCT","date":"January 19, 2015","format":false,"excerpt":"Frequent fliers get all the perks\u2014and all the attention from cyber criminals, apparently. United Airlines, American Airlines, and Park-n-Fly have all reported breaches in the past few days, pointing to an emerging trend of attacks targeted specifically at travelers. Travelers can be an easy mark for cyber criminals, because they're\u2026","rel":"","context":"In &quot;Security&quot;","block_context":{"text":"Security","link":"https:\/\/nccomputertech.com\/techtalk\/category\/security\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":8626,"url":"https:\/\/nccomputertech.com\/techtalk\/2015\/09\/16\/report-new-hack-lets-an-attacker-bypass-password-locked-android-home-screens-2\/","url_meta":{"origin":2482,"position":5},"title":"Report: New hack lets an attacker bypass password-locked Android home screens","author":"NCCT","date":"September 16, 2015","format":false,"excerpt":"If no one has been able to convince you to take your device\u2019s security seriously, perhaps this hack will do it. A video uncovered by Ars Technica shows someone able to use the emergency call access to gain entry to a locked phone, even though it\u2019s protected with a password.\u2026","rel":"","context":"In &quot;Hardware&quot;","block_context":{"text":"Hardware","link":"https:\/\/nccomputertech.com\/techtalk\/category\/hardware\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/J-pFCXEqB7A\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/posts\/2482","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/comments?post=2482"}],"version-history":[{"count":0,"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/posts\/2482\/revisions"}],"wp:attachment":[{"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/media?parent=2482"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/categories?post=2482"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nccomputertech.com\/techtalk\/wp-json\/wp\/v2\/tags?post=2482"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}