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iopq (OP)
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June 25, 2011, 12:38:08 PM |
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If I'm using a stock ATI 5750 with SDK 2.4 is it worth downgrading? I'm getting 132 Mhash/sec with m0mchil's miner, so I don't know if it's worth worrying about it or even if I get a better hashrate
also, where would I even get older versions?
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iopq (OP)
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June 25, 2011, 01:12:44 PM |
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found the older version, downgraded and my performance did go up 4-6 mhash/sec!
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dinker
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Activity: 103
Merit: 10
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June 27, 2011, 07:11:45 PM |
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so 3-5% that's not too shabby!
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Help Me Help You Donations:
14kP6tNtrz3woESs9nEE5aDB81QTybGyyZ
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FreeJAC
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Activity: 112
Merit: 10
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June 29, 2011, 12:44:27 AM |
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I have tried a couple of times to downgrade this last time with a 5830 and both times I get no OpenCL device available. (not exact error)
I installed the latest 5830 driver, unchecking SDK 2.4 so that it doesn't install and then install 2.1.
Is the trick to use an older driver as well?
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Donate here.... 18NiDLDA3qRxkEPN36xrzsdSgvEkbDKgNr
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FreeJAC
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Activity: 112
Merit: 10
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June 29, 2011, 12:48:41 AM |
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Donate here.... 18NiDLDA3qRxkEPN36xrzsdSgvEkbDKgNr
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rograz
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July 01, 2011, 10:38:50 AM |
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I found away around the "no OpenCL device" problem by doing a full catalyst install first(including sdk 2.4) then running the uninstall manager and removing SDK 2.4, after that just install 2.1 without doing any reboots or anything and it's worked on all my rigs.
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CNMOH
Member
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Activity: 266
Merit: 10
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July 01, 2011, 04:01:58 PM |
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I've never seen any performance difference when using 2.1 instead of 2.4.
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hchc
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July 01, 2011, 04:25:13 PM |
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I just downgrade to 2.1 and went from 306 to 311 at 970/300 5830. Pretty happy about it.
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joulesbeef
Sr. Member
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Activity: 476
Merit: 250
moOo
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July 06, 2011, 12:52:56 AM |
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I just downgrade to 2.1 and went from 306 to 311 at 970/300 5830. Pretty happy about it.
poclbm? or phatk? what cat driver? 10.4 or later |
mooo for rent
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n4l3hp
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July 07, 2011, 10:49:25 AM |
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4000 and 5000 series = SDK 2.1 and poclbm
5000 and 6000 series = SDK 2.4 and phatk
CAT 10.4, 10.11, 11.4, 11.6 = less than 0.5MH difference in performance
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iopq (OP)
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July 12, 2011, 12:48:21 AM |
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ffwd
Newbie
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July 15, 2011, 09:23:59 PM |
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with overclocked 5550 im getting ~64M h/s on both 2.4 and 2.1 with latest poclbm
the difference is very very minor (within 0.2 Mh/s).
Perhaps 2.1 more beneficial with HD 4k range cards, but i see no reason to use it with HD 5k-6k
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JWU42
Legendary
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Activity: 1666
Merit: 1000
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July 22, 2011, 09:05:35 PM |
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2.1 is best with 57xx, 58xx, 5970 cards.
PhatK came out to try and improve 2.4 performance with these higher performance 5xxx series cards.
My linux boxen with 5770, 5850, and 5970 run 4-5% higher with 2.1 versus 2.4
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Meatball
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July 23, 2011, 02:33:23 AM |
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Same here with all my testing on 5770's, 5830's & 5850's. SDK 2.1 gives me approximately 4-6% faster hash rates than anything newer. Have tried 11.5, 11.6 & 11.7 drivers and both Win 7 x32 & x64 with the same result.
I'm using Poclbm through guiminer for my mining.
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phelix
Legendary
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Activity: 1708
Merit: 1019
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July 27, 2011, 08:03:07 AM |
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Same here with all my testing on 5770's, 5830's & 5850's. SDK 2.1 gives me approximately 4-6% faster hash rates than anything newer. Have tried 11.5, 11.6 & 11.7 drivers and both Win 7 x32 & x64 with the same result.
I'm using Poclbm through guiminer for my mining.
what about the new modified phatk? that should even it out. |
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