Bitcoin Forum
September 03, 2024, 09:37:08 PM
Welcome,
Guest
. Please
login
or
register
.
News
: Latest Bitcoin Core release:
27.1
[
Torrent
]
Home
Help
Search
Login
Register
More
Bitcoin Forum
>
Other
>
Beginners & Help
>
Use of 4x HD6990 cards
Pages: [
1
]
« previous topic
next topic »
Print
Author
Topic: Use of 4x HD6990 cards (Read 1056 times)
d3m0n1q_733rz
(OP)
Sr. Member
Offline
Activity: 378
Merit: 250
Use of 4x HD6990 cards
June 12, 2011, 05:42:53 PM
#1
Hello, I am looking at building a rig with 4x HD6990 cards in it and I wanted to know if I would be required to connect each card to a display before their GPUs would be activated for mining. I know in past calculation programs, it was required for a display or null to be connected to at least one port of each card before the GPUs would do any work; has this changed with OpenCL or do I need to invest in null devices?
Thanks!
Funroll_Loops, the theoretically quicker breakfast cereal!
Check out
http://www.facebook.com/JupiterICT
for all of your computing needs. If you need it, we can get it. We have solutions for your computing conundrums. BTC accepted! 12HWUSguWXRCQKfkPeJygVR1ex5wbg3hAq
muyoso
Member
Offline
Activity: 84
Merit: 10
Re: Use of 4x HD6990 cards
June 12, 2011, 05:49:27 PM
#2
You could take a single monitor and plug it into the first card, start the miner and then plug it into the second card and start that miner, etc. But you would have to do that each time you restarted the miners. Would save a bit of money though.
I drink it up!
trentzb
Sr. Member
Offline
Activity: 406
Merit: 251
Re: Use of 4x HD6990 cards
June 12, 2011, 05:52:01 PM
#3
On Windows I believe it is necessary to connect a monitor or dummy plug to each card. On Linux it is not necessary.
phillipsjk
Legendary
Offline
Activity: 1008
Merit: 1001
Let the chips fall where they may.
Re: Use of 4x HD6990 cards
June 12, 2011, 06:10:45 PM
Last edit: June 12, 2011, 06:29:47 PM by phillipsjk
#4
Apparently the "dummy plug" can consist of a strategicly placed 87 Ohm resistor (one of the color channels (say green) -> ground))
James' OpenPGP
public key
fingerprint: EB14 9E5B F80C 1F2D 3EBE 0A2F B3DE 81FF 7B9D 5160
jwzguy
Hero Member
Offline
Activity: 868
Merit: 1002
Re: Use of 4x HD6990 cards
June 12, 2011, 06:14:42 PM
#5
Dummy plug didn't work for me. Also, although I bought an MSI 890FXGD70 (quad xfire supposedly), installing more than 3 cards gave errors with MSI Afterburner. Not worth it, just have to put the 4th card into another machine.
arc45
Newbie
Offline
Activity: 60
Merit: 0
Re: Use of 4x HD6990 cards
June 25, 2013, 01:38:43 AM
#6
Quote from: trentzb on June 12, 2011, 05:52:01 PM
On Windows I believe it is necessary to connect a monitor or dummy plug to each card. On Linux it is not necessary.
Thanks for saying that. I was wondering why my pc couldn't see the 5870.
galtbit
Full Member
Offline
Activity: 231
Merit: 100
Re: Use of 4x HD6990 cards
June 25, 2013, 03:31:59 AM
#7
hmm..
xide
Member
Offline
Activity: 88
Merit: 10
Re: Use of 4x HD6990 cards
June 25, 2013, 05:44:39 AM
#8
dummy plugin depends of driver version...
BTC: 1L3ZAawXD3NxH82CSF241ZNQBS25ovNZtb LTC:LMyCbS4hmmoQyBn3LNRxydsECDWoKbdL2V PPC:PEZFPZmzoVe7STyQrjgBa943dzmLHim1uo FTC:6g2rnASKaPmVvPmtJG5b4MnAWz8XSgwpVs
NMC: My7Ee36vC4eR1Pk1ucqZCMNXBpuL7SNbvZ tnx for donations!
Pages: [
1
]
Print
Bitcoin Forum
>
Other
>
Beginners & Help
>
Use of 4x HD6990 cards
« previous topic
next topic »
Jump to:
Please select a destination:
-----------------------------
Bitcoin
-----------------------------
=> Bitcoin Discussion
===> Legal
===> Press
===> Meetups
===> Important Announcements
=> Development & Technical Discussion
===> Wallet software
=====> Electrum
=====> Bitcoin Wallet for Android
=====> BitcoinJ
=====> Armory
=====> Mycelium
=====> Hardware wallets
=> Mining
===> Mining support
===> Pools
===> Mining software (miners)
===> Hardware
=====> Group buys
===> Mining speculation
=> Bitcoin Technical Support
=> Project Development
-----------------------------
Economy
-----------------------------
=> Economics
===> Speculation
=> Marketplace
===> Goods
=====> Computer hardware
=====> Digital goods
=======> Invites & Accounts
=====> Collectibles
===> Services
===> Currency exchange
===> Gambling
=====> Games and rounds
=====> Investor-based games
=====> Gambling discussion
===> Lending
=====> Long-term offers
===> Securities
===> Auctions
===> Service Announcements
=====> Micro Earnings
===> Service Discussion
=====> Web Wallets
=====> Exchanges
=> Trading Discussion
===> Scam Accusations
===> Reputation
-----------------------------
Other
-----------------------------
=> Meta
===> New forum software
===> Bitcoin Wiki
=> Politics & Society
=> Beginners & Help
=> Off-topic
=> Serious discussion
===> Ivory Tower
=> Archival
===> Корзина
===> CPU/GPU Bitcoin mining hardware
===> Chinese students
===> Obsolete (buying)
===> Obsolete (selling)
===> MultiBit
-----------------------------
Alternate cryptocurrencies
-----------------------------
=> Altcoin Discussion
=> Announcements (Altcoins)
===> Tokens (Altcoins)
=> Mining (Altcoins)
===> Pools (Altcoins)
=> Marketplace (Altcoins)
===> Service Announcements (Altcoins)
===> Service Discussion (Altcoins)
===> Bounties (Altcoins)
=> Speculation (Altcoins)
-----------------------------
Local
-----------------------------
=> العربية (Arabic)
===> العملات البديلة (Altcoins)
=====> النقاشات
===> إستفسارات و أسئلة المبتدئين
===> التعدين
===> النقاشات الأخرى
===> منصات التبادل
=> Bahasa Indonesia (Indonesian)
===> Marketplace (Bahasa Indonesia)
===> Mining (Bahasa Indonesia)
===> Altcoins (Bahasa Indonesia)
===> Trading dan Spekulasi
===> Ekonomi, Politik, dan Budaya
===> Topik Lainnya
=> Español (Spanish)
===> Mercado y Economía
=====> Servicios
=====> Trading y especulación
===> Hardware y Minería
===> Esquina Libre
===> Mercadillo
=====> Mexico
=====> Argentina
=====> España
=====> Centroamerica y Caribe
===> Primeros pasos y ayuda
===> Altcoins (criptomonedas alternativas)
=====> Minería de altcoins
=====> Servicios
=====> Tokens (Español)
=> 中文 (Chinese)
===> 跳蚤市场
===> 山寨币
===> 媒体
===> 挖矿
===> 离题万里
=> Hrvatski (Croatian)
===> Trgovina
===> Altcoins (Hrvatski)
=====> Announcements (Hrvatski)
===> Off-topic (Hrvatski)
=> Deutsch (German)
===> Anfänger und Hilfe
===> Mining (Deutsch)
===> Trading und Spekulation
===> Projektentwicklung
===> Off-Topic (Deutsch)
===> Treffen
===> Presse
===> Altcoins (Deutsch)
=====> Announcements (Deutsch)
===> Marktplatz
=====> Auktionen
=====> Suche
=====> Biete
=> Ελληνικά (Greek)
===> Αγορά
===> Mining Discussion (Ελληνικά)
===> Altcoins (Ελληνικά)
=====> Altcoin Announcements (Ελληνικά)
=====> Altcoin Mining (Ελληνικά)
=> עברית (Hebrew)
=> Français
===> Actualité et News
===> Débutants
===> Discussions générales et utilisation du Bitcoin
===> Mining et Hardware
===> Économie et spéculation
===> Place de marché
=====> Échanges
=====> Produits et services
=====> Petites annonces
===> Le Bitcoin et la loi
===> Wiki, documentation et traduction
===> Développement et technique
===> Vos sites et projets
===> Hors-sujet
===> Altcoins (Français)
=====> Annonces
=> India
===> Mining (India)
===> Marketplace (India)
===> Regional Languages (India)
===> Press & News from India
===> Alt Coins (India)
===> Buyer/ Seller Reputations (India)
===> Off-Topic (India)
=> Italiano (Italian)
===> Guide (Italiano)
===> Progetti
===> Discussioni avanzate e sviluppo
===> Trading, analisi e speculazione
===> Mercato
=====> Mercato valute
=====> Beni
=====> Servizi
=====> Esercizi commerciali
=====> Hardware/Mining (Italiano)
=====> Gambling (Italiano)
===> Accuse scam/truffe
===> Mining (Italiano)
===> Alt-Currencies (Italiano)
=====> Annunci
===> Raduni/Meeting (Italiano)
===> Crittografia e decentralizzazione
===> Off-Topic (Italiano)
=> 日本語 (Japanese)
===> アルトコイン
=> Nederlands (Dutch)
===> Markt
===> Gokken/lotterijen
===> Mining (Nederlands)
===> Beurzen
===> Alt Coins (Nederlands)
===> Off-topic (Nederlands)
===> Meetings (Nederlands)
=> Nigeria (Naija)
===> Politics and society (Naija)
===> Off-topic (Naija)
=> 한국어 (Korean)
===> 대체코인 Alt Coins (한국어)
=> Pilipinas
===> Altcoins (Pilipinas)
=====> Altcoin Announcements (Pilipinas)
===> Pamilihan
===> Others (Pilipinas)
=> Polski
===> Tablica ogłoszeń
===> Alternatywne kryptowaluty
=====> Nowe kryptowaluty i tokeny
=====> Tablica ogłoszeń (altcoiny)
=> Português (Portuguese)
===> Primeiros Passos (Iniciantes)
===> Economia & Mercado
===> Mineração em Geral
===> Desenvolvimento & Discussões Técnicas
===> Criptomoedas Alternativas
===> Brasil
===> Portugal
=> Русский (Russian)
===> Новички
===> Бизнес
=====> Барахолка
=====> Обменники
===> Идеи
===> Кодеры
===> Майнеры
===> Политика
===> Трейдеры
===> Альтернативные криптовалюты
=====> Токены
=====> Бayнти и aиpдpoпы
===> Хайпы
===> Работа
===> Разное
===> Oбcyждeниe Bitcoin
=====> Новости
=====> Юристы
=> Română (Romanian)
===> Anunturi importante
===> Offtopic
===> Market
=====> Discutii Servicii
===> Minerit
===> Tutoriale
===> Bine ai venit!
===> Presa
===> Altcoins (Monede Alternative)
=====> Anunturi Monede Alternative
=> Skandinavisk
=> Türkçe (Turkish)
===> Bitcoin Haberleri
===> Pazar Alanı
===> Madencilik
===> Ekonomi
===> Servisler
=====> Fonlar
===> Proje Geliştirme
===> Alternatif Kripto-Paralar
=====> Madencilik (Alternatif Kripto-Paralar)
=====> Duyurular (Alternatif Kripto-Paralar)
===> Konu Dışı
===> Yeni Başlayanlar & Yardım
===> Buluşmalar
=> Other languages/locations
Loading...