5830 only getting 215 mhash OC'd | Bitcointalksearch.org

resin

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Quote from: stapler117 on June 10, 2011, 03:47:10 PM

I'm running ubuntu 11.04 so I'd have to use wine with those utilities and i'm not sure if I want to trust wine with overclocking.

But how are you guys getting such low memory clocks? I can't go below 600mhz on my sapphire without it crashing and displaying stripes on the screen.

I'm also using ubuntu 11.04, and similarly I can't significantly downclock the memory on my sapphire 5830's without either having the cards crash, or reducing the hash rate to ~150mhash/s per card. For reference, using hashkill-gpu I get around 260 mhash/s per card running at 900mem, 830 gpu. I'm going to try out some of the other utilities today.

innervisi0nn

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Activity: 98

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Tutorials, guidelines, optimizations for all!

Quote from: stapler117 on June 10, 2011, 03:47:10 PM

I'm running ubuntu 11.04 so I'd have to use wine with those utilities and i'm not sure if I want to trust wine with overclocking.

But how are you guys getting such low memory clocks? I can't go below 600mhz on my sapphire without it crashing and displaying stripes on the screen.

975/340 gives me 303mhash/s works on both xfx and sapphire
using msi afterburner..

Fakeman

full member

Activity: 154

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Did not know that Trixx was the official Sapphire program, will try that.

stapler117

newbie

Activity: 56

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I'm running ubuntu 11.04 so I'd have to use wine with those utilities and i'm not sure if I want to trust wine with overclocking.

But how are you guys getting such low memory clocks? I can't go below 600mhz on my sapphire without it crashing and displaying stripes on the screen.

FreeJAC

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Activity: 112

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Trixx will do both cards but only when crossfired. Some say crossfire ok some say not ok for mining.

airdata

hero member

Activity: 1148

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get sapphire trixx. It lets you oc further than CCC. my 5830's oc like a dream. You should have no problem going 950-975 range and be getting closer to 280ish+

Somebody told me about another OC tool earlier that could work for multiple cards. I havent had a chance yet to use it. : Itracker2 by asus. I was told it will oc multiple cards whereas trixx is just 1 card.

muyoso

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Activity: 84

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I have a Sapphire 5830. Running it at:

1000mhz core
330mhz mem
stock voltages
57c full load
305MH/s

Used Trixx to overclock. I had it clocked at 1050mhz for a while, but had to raise voltages for that. Wanted something that was very stable so chose to lower voltages to stock and drop to 1000mhz. This card is amazing. I can't wait until I am done with bitcoin mining to see how this thing compares with my 5850, because it certainly overclocks a HELL of a lot better.

LegitBit

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Quote from: Lightspeed on June 10, 2011, 02:47:44 PM

I believe you do however have to do the bios mod in order to use higher clocks in linux as it has unsuitable overclocking software

Correct. I think there is a guy around the forums who is developing a CMD-line tool for it, but since I do not use linux often I haven't looked into that.

Quote from: beeph on June 10, 2011, 02:52:57 PM

and where can i get the flash software to flash the better BIOS?

http://www.techpowerup.com/rbe/

However I would reccomend against this.. use a tool like Afterburner of TRIXX first to find a stable overclock beyond what Overdrive lets you do, then set that to the BIOS for a more permanent solution.

beeph

newbie

Activity: 42

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ATI overdrive software with the default BIOS lets me do 600-875 on the gpu and 900-1200 on the memory
what kind of hashes can i get without flashing the BIOS

and where can i get the flash software to flash the better BIOS?

i dont care about running them hot i've run radeons hot for years and they never burn out

Lightspeed

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Activity: 126

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Quote from: LegitBit on June 10, 2011, 02:42:38 PM

You don't need to BIOS flash if you are on windows, just use MSI Afterburner.

Sometimes you need to open and re-close afterburner to see higher ranges, but I have my 5830 OC'd to 960 this way with no bios modification.

http://event.msi.com/vga/afterburner/download.htm

I believe you do however have to do the bios mod in order to use higher clocks in linux as it has unsuitable overclocking software

Lightspeed

full member

Activity: 126

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here is my stats after tweaking for the last 4 hours or so

2x 5830 @ 300-302 MH/s @ 1000 core/1000 memory (not downclocking ram)

windows 7 64 bit
catalyst 11.4
ATI Stream/opencl 2.1

(FYI: SDK = Software Development Kit and is not really the name of anything)

I started about 215 MH/s

Basically to get to 300 I had to:

uninstall ATI Stream 2.4 (comes with drivers I have)
reinstall 2.1
overclock using MSI afterburner with the UnofficialOverclockingEULA/UnofficialOverclockingMode unlock

and yeah, easy as

LegitBit

full member

Activity: 140

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You don't need to BIOS flash if you are on windows, just use MSI Afterburner.

Sometimes you need to open and re-close afterburner to see higher ranges, but I have my 5830 OC'd to 960 this way with no bios modification.

http://event.msi.com/vga/afterburner/download.htm

stapler117

newbie

Activity: 56

Merit: 0

In order to get 300 Mhash/s out of the 5830, you have to overclock it past 900Mhz. This involves flashing the graphics card's BIOS which can be risky. It will also shorten the life of your card if you don't have the proper cooling. I'm getting 265 Mhash/s out of my 5830's with the same overclock. You should use the phoenix miner with the phatk kernel. It's designed for the 58xx series and will give you a few more Mhash/s. I can't remember all of my flags so i'll get back to you on that.

I've also had problems with the sdk 2.1 and haven't been able to get it to work. I'm using 2.4 right now, but 2.1 will give you a nice boost in hashes if it works.

rgod14

newbie

Activity: 35

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Hey, I'm using SDK 2.4 with Catalyst 11.5 and I'm getting about 290. I've got it oc'd to 975/275 (which seems to be the sweet spot for mine). Also using the flags -v -w128 in GUIMiner. It's a Sapphire 5830 if that makes a difference.

beeph

newbie

Activity: 42

Merit: 0

Thanks fellow bitcoin-rush miners! The flags got me to aroudn 255.. but when i tried installing the 2.1 SDK (win7 - 64 bit) guiminer gets stuck at 'starting...' when i try to mine.. so my hash rate is now 0 Sad

anyone got any ideas why 2.1 SDK screwed things up?

Lightspeed

full member

Activity: 126

Merit: 100

where did you get a modified bios for the 5830?

Fakeman

full member

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Thanks.

Orcworm

newbie

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http://developer.amd.com/sdks/AMDAPPSDK/downloads/pages/AMDAPPSDKDownloadArchive.aspx

Fakeman

full member

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Where do you get ATI Stream 2.1? Is it true that 2.4 works just as well if using the Phoenix phatk kernel?

Orcworm

newbie

Activity: 11

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Make sure you're using ATI Stream 2.1 rather than 2.4, moved me from 220m to 270m at 900 core.

Topic: 5830 only getting 215 mhash OC'd (Read 3825 times)