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Author Topic: [Solved, it was sdk 2.6] 5870 slower than others?  (Read 1092 times)
SiegeBreaker
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February 11, 2012, 07:21:45 PM
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I am only getting 370MH/s. I see reports of others regularly getting ~450Mh/s out of their 5870's what am I missing?

I got a Vapor-X 5870 clocked at 900MHz, 300MHz mem running cgminer at I=9 on Win 7 64-bit, turning crossfire off/on makes no difference.
I clocked up to 950MHz and only could get up to ~390MH/s.
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Miner612
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February 11, 2012, 08:53:30 PM
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I clock mine to 1187 core and 300 ram ... and get about 440 mhash.

win7 - 64bit, 11.11 amd drivers, cgminer 2.2.1 -- nothing special.

I buy and sell GPUs, most 5850s and 7970s. 
jimzolorenzo@gmail.com  -- Make an offer.
http://myworld.ebay.com/i_buy_5850s  -- current inventory
I have a couple bare bone mining rigs for sale as well.

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I bought silver from [ccliu] 5 star transaction!
I bought silver from [TECSHARE] -- shipping still
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February 11, 2012, 09:57:35 PM
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Thanks Holliday! Reverting to 2.5 did the trick, I did have 2.6 from when 12.1 came out. I am back over 400MHz now. I had thought the sdk version issues were only on Linux from what I had heard, but good to know otherwise.
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February 11, 2012, 10:10:15 PM
 #4

I get 433 on a 5870.
GPU @ 950 Mhz, Vcore @ 1.162, Mem 300, 11.12 driver SDK 2.5

I think 370 Mh/s @ 900 is normal with 11.11 drivers.
Try 11.11 with SDK 2.5

[edit]Little bit late I see.[/edit]

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February 12, 2012, 09:08:21 PM
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My 5870 does 440-480 at 1000mhz, 1.2v, sdk 2.5

Don't get caught up in the game and have a nice day!
joulesbeef
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February 12, 2012, 09:20:14 PM
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I wonder how much AMD has helped to artificially keep difficulty down, with sdk 2.6

mooo for rent
SiegeBreaker
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February 12, 2012, 09:29:04 PM
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Now, I fixed myWindows rigs, but how do I check the sdk version on linux?
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February 18, 2012, 01:13:58 PM
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Nevermind, I just looked on my drive at which sdk I downloaded. ie: 'AMD-APP-SDK-v2.4-lnx64.tgz'
hashking
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February 18, 2012, 02:00:08 PM
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On windows, how can I change the sdk only.

SiegeBreaker
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February 18, 2012, 03:36:23 PM
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There is a thread that has details to revert the sdk manually, this specific message: https://bitcointalk.org/index.php?topic=54693.msg651989#msg651989 has a rar you can just unpack to replace your 2.6 binaries with the 2.5 ones. You could do it messing around with the AMD uninstaller/installer but I found it easier to do manually
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