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Author Topic: Good Speeds on Sapphire 5830's 311.4MHash/s  (Read 22886 times)
vivithemage
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July 12, 2011, 04:49:17 PM
 #121

how does one downclock the memory, to save on power consumption but keeping output high?

I do not want to flash em, I have 4 running in a rig.

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July 12, 2011, 08:00:54 PM
 #122

how does one downclock the memory, to save on power consumption but keeping output high?

I do not want to flash em, I have 4 running in a rig.

Vivi : you can use msi afterburner.  Follow this guide : http://bitclockers.com/forums/index.php?topic=5.0

It requires you to install msi afterburner and then edit a couple of lines of the cfg file.  To get the memory clock below 500 you may have to move it to 500 and then close the program and open it back up to get it to lets say 300 or below.

vivithemage
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July 12, 2011, 08:12:37 PM
 #123

Yup, but what should I clock down to save power, but keep up mhash?

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July 12, 2011, 09:03:33 PM
 #124

Yup, but what should I clock down to save power, but keep up mhash?

I run my Sapphire 5830 core at 966 MHz and the Memory art 325 MHz.   I actually get faster hashing speed when the memory runs between 300 and 350 MHz than the default but it crashes if I launch a game.   I think that the sweet spot is tightly related to your core speed.  Some people are obtaining better performance at other mem speed but 325 works best for me.

I haven't changed the voltage, MSI afterburner won't let me do it on this card.

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vivithemage
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July 12, 2011, 09:04:53 PM
 #125

Thanks, i'll play with it when I get home ... i'll have 4 cards in one rig, so we'll see what happens Smiley.

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vivithemage
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July 14, 2011, 04:14:08 AM
 #126

I have 2 5830's running at 311~mhash as well now, thanks Smiley

I made a quick guide to MSI Afterburner unlocking extra OC features ... very simple :

http://vivithemage.com/2011/03/enabling-unofficial-overclocking-in-msi-afterburner-2-1/

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ssateneth
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July 31, 2011, 10:24:18 AM
 #127

325.2 MHash/sec
Sapphire 5830 Extreme
1010/370/1.175v
70c
GUIMiner v2011-07-01 / phoenix / diapolo modded phatk 7-17
VECTORS BFI_INT WORKSIZE=256 FASTLOOP=false AGGRESSION=14

mike678
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July 31, 2011, 04:25:02 PM
 #128

325.2 MHash/sec
Sapphire 5830 Extreme
1010/370/1.175v
70c
GUIMiner v2011-07-01 / phoenix / diapolo modded phatk 7-17
VECTORS BFI_INT WORKSIZE=256 FASTLOOP=false AGGRESSION=14
You shouldn't have to change voltages in order to get that speed. I have 1030/350 for the same card as yours with no overvolt and I'm getting 333.88. If I go with your speed no overvolt I get 327.36. Try these settings:
phoenix 1.5
phatk from Phateus(7-29)
catfish
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July 31, 2011, 09:37:55 PM
 #129

On all the 5800/5700 series cards, hash rate should be roughly linear w.r.t. core clock speed and number of stream processors.

Certainly that's what I've found with my sample of 7 cards - not statistically significant, I know... Wink

5770 has 800 SP, and running at 900 MHz core will give me normally ~ 206 MH/s. Running any of my 5850s at 900 MHz core gives around 370 MH/s. This fits with the theory. That said, I can run one of my 5770s at 1000 MHz and that gives 228 MH/s - the closest comparison is my old Sapphire 5850 at 999 MHz which pulled 408 MH/s - this is almost exact proof of my theory (5770 has 800 SPs, 5850 has 1440, so the 5850 has 1.8 times the number of SPs, and they're running at approximately the same core clock... 228 x 1.8 = 410.4 which is very close).

I'm using all the same software - Ubuntu 11.04, AMD 2.4 SDK, phoenix 1.50, phatk OpenCL kernel (20110717 version). The important thing here is to use the new modified phatk kernel and the BFI_INT instruction... also I run ALL cards at 300 MHz memory clock to keep temps down.

From this theory, with 5830s having 1120 SPs, IIRC, running the card at 900 MHz core clock (sounds feasible from the reports here) ought to result in an average MH/s of (1120 / 800) * 206 = 288.4. This isn't a massive improvement on a 5770 so unless the 5830 is cheap, or can be clocked MUCH higher, it's not as great a card as the 5850...

I have found some cheap 5830s though so will be testing them out Smiley If they overclock to 1000 MHz happily, then I predict 319 MH/s. That's good enough for me.


So yeah, your 311.4 MH/s sounds pretty decent to me! Cheesy

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I'm too wasted to fight back...


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ssateneth
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August 01, 2011, 12:00:46 AM
 #130

325.2 MHash/sec
Sapphire 5830 Extreme
1010/370/1.175v
70c
GUIMiner v2011-07-01 / phoenix / diapolo modded phatk 7-17
VECTORS BFI_INT WORKSIZE=256 FASTLOOP=false AGGRESSION=14
You shouldn't have to change voltages in order to get that speed. I have 1030/350 for the same card as yours with no overvolt and I'm getting 333.88. If I go with your speed no overvolt I get 327.36. Try these settings:
phoenix 1.5
phatk from Phateus(7-29)


Stock voltage 1.163v, maximum stable core is 985 at same temperature. I needed the bump to get it stable.

mike678
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August 01, 2011, 01:15:09 AM
 #131

325.2 MHash/sec
Sapphire 5830 Extreme
1010/370/1.175v
70c
GUIMiner v2011-07-01 / phoenix / diapolo modded phatk 7-17
VECTORS BFI_INT WORKSIZE=256 FASTLOOP=false AGGRESSION=14
You shouldn't have to change voltages in order to get that speed. I have 1030/350 for the same card as yours with no overvolt and I'm getting 333.88. If I go with your speed no overvolt I get 327.36. Try these settings:
phoenix 1.5
phatk from Phateus(7-29)


Stock voltage 1.163v, maximum stable core is 985 at same temperature. I needed the bump to get it stable.
That's weird maybe I just got a good batch?
lowlevel
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August 01, 2011, 02:13:44 AM
 #132

Hey I was just curious if anyone has pushed their 5830's over the 311MHash/s Mark.
Getting 311.4->311.89 using Pheonix Miner in Win7 without Aero

I'm getting about 311.6 to 312.2 or so sustained on one of my 5830's.
975mhz gpu, 320mhz ram, stock voltage.

My other two are in the same box and I have trouble with them past 960mhz.. so those I get 305ish on.
I'm sure if I was willing to up the voltage and push the clock harder, I could get 320mhashes... but I'm not really into frying video cards.

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ssateneth
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August 01, 2011, 03:53:06 AM
 #133

325.2 MHash/sec
Sapphire 5830 Extreme
1010/370/1.175v
70c
GUIMiner v2011-07-01 / phoenix / diapolo modded phatk 7-17
VECTORS BFI_INT WORKSIZE=256 FASTLOOP=false AGGRESSION=14
You shouldn't have to change voltages in order to get that speed. I have 1030/350 for the same card as yours with no overvolt and I'm getting 333.88. If I go with your speed no overvolt I get 327.36. Try these settings:
phoenix 1.5
phatk from Phateus(7-29)


Stock voltage 1.163v, maximum stable core is 985 at same temperature. I needed the bump to get it stable.
That's weird maybe I just got a good batch?

It's very likely. I bought 5 cards. One is good to 1025MHz stock volts, other is only good to 955MHz, regardless of voltage.

SolidBitShop
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August 01, 2011, 09:25:45 AM
 #134

The stable core clock is i think by luck. I have 6 of them and not everyone runs at the same speed. For example

1015/325 - 323M#/s 74C Fan 60% - unstable for 1020+ (freezes the PC)
975/325 - 311M#/s 76C Fan 66% - unstable for longer period of time from 985+ (The drivers turn off and the card is not mining. stays on 0% GPU load)
965/325 - 308M#/s 78C Fan 69% - above 965 it gets unstable

These above are in one case. From top - the cards have better air flow. Space between is one pci/pcie slot. Two 120mm fans blowing out the hot air from the back end of the cards. If there is one 120mm fan blowing in the air on a side of a card to the fans on the cards it gets - 2/4 C depends on card (the first cards temp stays the same)

The other rig is

930@275 - 298M#/s 77 - 80 C (depends on the outside temperature) Fan 76% - Can't really tell whats the stable core clock (its running at low core clock because the heat is killing the card, its in close position to another cards so the temps are very high)
1006@315 - 319-321 M#/s 76 - 78C Fan at 66% (Its stable above these settings but the efficiency is poor (it gets less accepted and many rejected)
1015@315 - 321 - 324 M#/s 72 - 74 C Fan 54% ( unstable for 1020 +)

For this configuration there is only one 120mm fan blowing out the heat from the first and second card. ( i found that blowing out air is better than blowing in - of course best combination is blowing out and blowing in - but I dont have a fan for that jet.

Anyway if someone would be interested in software settings they are the same for all rigs:

Win7 64x
Phoenix 1.5 with phatk kernel 2011-07-17

-a 5 -k phatk VECTORS BFI_INT AGGRESSION=13 FASTLOOP=false (for phoenix worksize is default for the cards witch is 256)

catalyst 11.6 SDK 2,4 (tryed 11,7 sdk2,5 but one of my card didnt worked and the speed was poor for my settings)


PS. ohh and the voltage is stock
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