Bitcoin Forum
December 07, 2016, 08:41:55 AM *
News: Latest stable version of Bitcoin Core: 0.13.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: Need a second opinion on 4x 5830 setup running at 301 Mhash/s each  (Read 1571 times)
CanaryInTheMine
Donator
Legendary
*
Offline Offline

Activity: 1512


between a rock and a block!


View Profile
June 21, 2011, 01:09:18 AM
 #1

So I have a system running with 4 XFX 5830s.
Win7 64 bit.
SDK 2.4
11.6 drivers (minimal install)

I'm using phoenix 1.5 from command line against slush.  each of the 4 instances is running at slightly over 301 Mhash/s

All 4 cards are set to 970/350 with 75% fan speed.

all 4 cards are next to each other.  The fan temps are: 76,76,83,64

Attached 1 monitor and using 3 dongles.

The current OC setting appear to be right up at the limits... If I go above 970, system becomes unstable.

One current and strange behavior is that once my monitor goes to sleep, if I "wake up" the system by say moving the mouse, the system freeze and I will need to reboot.  So, I don't touch it... it's been running for days now.

Does anyone have any suggestions or ideas on maybe trying to squeeze out more Mhashes with currently loaded OS?

Side note:  with only 3 cards I was able to run the cards at about 308/309 Mhashes but it was OC'ed to 980-990.  With 4 cards 970 is the highest I can run at as long as I don't wake up the monitor.

Obviously one option is to never let the monitor go to sleep... but this in itself isn't a big issue, I can leave it be....

I'm more interested in hearing some suggestions on how to squeeze more out of these cards...

phoenix is launched via a batch file:

:start
phoenix.exe blah blah blah
go to start
This takes care of phoenix.exe crashes.

Additionally, I have a scheduled task that kills all phoenix.exe instances every 30 minutes. and above batch files just launches it anew.

Thanks for your input!


| In Default we Trust | Need gold/silver for btc? | Buy bitcoins |
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1481100115
Hero Member
*
Offline Offline

Posts: 1481100115

View Profile Personal Message (Offline)

Ignore
1481100115
Reply with quote  #2

1481100115
Report to moderator
CentroniX
Member
**
Offline Offline

Activity: 109


View Profile
June 21, 2011, 08:36:13 PM
 #2

What flags are you passing phoenix?
CanaryInTheMine
Donator
Legendary
*
Offline Offline

Activity: 1512


between a rock and a block!


View Profile
June 21, 2011, 08:51:33 PM
 #3

vectors bfi_int worksize=256 fastloop=false aggression=12 -k phatk

| In Default we Trust | Need gold/silver for btc? | Buy bitcoins |
CoinSpeculator
Jr. Member
*
Offline Offline

Activity: 42


View Profile
June 22, 2011, 04:27:14 PM
 #4

This is pretty much the limit of these cards if you want to be mining for long enough to pay them back.  At some point you should start to play around with undervolting and lowering the clock to reduce power consumption.  10% reduction in voltage and a 10% reduction in mhz can reduce the power like 30-40%.
hunter
Jr. Member
*
Offline Offline

Activity: 51


View Profile
June 22, 2011, 05:09:16 PM
 #5

Still happen if you turn it off vs sleep?
CanaryInTheMine
Donator
Legendary
*
Offline Offline

Activity: 1512


between a rock and a block!


View Profile
June 22, 2011, 06:59:22 PM
 #6

Still happen if you turn it off vs sleep?

I just disabled monitor sleep in the power profile and instead turn off the power on the monitor itself. also changed the color from 32 bit to 16, although not sure if that did anything useful.

| In Default we Trust | Need gold/silver for btc? | Buy bitcoins |
melco
Member
**
Offline Offline

Activity: 62


View Profile
June 30, 2011, 08:47:52 AM
 #7

Tell us please how much power this rig draws? 850PSU enough for 4 overclocked 5830?

hennessy
Jr. Member
*
Offline Offline

Activity: 49


View Profile
June 30, 2011, 01:06:20 PM
 #8

Tell us please how much power this rig draws? 850PSU enough for 4 overclocked 5830?

It's enough, at least for this kind of OC - I'm running the same system. But it should be a gold certified PSU.

Try OC'ing the outside card just a little more, don't touch the other ones. Bring up the fans to 90-100% and try getting the gaps between each card a little bigger to give them some more space to breathe, ideally putting an extra fan ontop.
83°C is close to the  limit, I never go above 80, my hottest card is currently running at 76°C with 960Mhz on each and the outside card at 1000Mhz.

If I was of any help, donations are appreciated - 1FrCtiQsVoy2YTTYqgjsvVvdgvHS4Umah4
8x Sapphire 5830 @950/300 in 2 dedicated mining rigs -> 2500Mhash/s
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!