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Improve my HD7770 Kh rate?

post #1 of 8
Thread Starter 
(SOLVED- POST #6)

Need some help figuring out a Hashrate issue

In my "main gaming computer" I put two 7770s and had them litecoin mining

XFX Ghost 7770 averages 180~ Kh
HIS 7770 averages 150~ Kh

They are at their "stock/overclocked profile" speeds

Decided to take them out and put in my x58 rig to mine but there hashrate dropped a lot.

XFX Ghost 7770 averages 150~ Kh @1200mhz core
HIS 7770 averages 130~ Kh @1150mhz core

They are even OCed more and getting far less Hash rate I don't quite understand. used the same program, GUIminer Scyrpt v.04 on both computers. Are hardware differences hurting my hashrate?


Differences in hardware
"Gaming rig"
intel core i5 2500K
ASUS Maximus Extreme V
16GB DDR3 1866mhz
GTX 680 2GB (gaming card)
2x 7770s(for mining)
PC power & Cooling 1200w

"x58 rig"
I7 920 2.6@2.00Ghz 1.0v
4GBx1 1600mhz@1066mhz @ 1.35v
EVGA x58 SLI motherboard
3x Various HD5850's 1GB(replaced currently with HD7770's)
Antec 1200w PSU
500GB HDD
Windows 7 64bit

Any help or advice would be appreciated
Edited by Xazax - 12/1/13 at 10:28pm
post #2 of 8
Quote:
Originally Posted by Xazax View Post

16GB DDR3 1866mhz

4GBx1 1600mhz@1066mhz @ 1.35v

The problem seems pretty obvious to me..
My PC
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CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
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My PC
(14 items)
 
Wife's PC
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
post #3 of 8
Problem is clock speeds

At 935 MHz core and 1522 MHz RAM my XFX 7770 gets 190 KH/s at intensity 16 or 18

Adjust clocks speeds and raise power limiter to +20%
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CPUMotherboardGraphicsRAM
i7 2700K Intel DP67BG SLI 2x Zotac 570 Reference 16GB G.Skill 1600MHz / 1.25v 
Hard DriveOSMonitorKeyboard
WD 2TB / OCZ Solid3 128GB Vista Pro 7 x64 / Ubuntu 22.5" Acer LCD Dollarstore special 
PowerCaseMouse
OCZ Z-Series 1000w Coolermaster HAF 922 w/ 5x YL high speeds Logitech with red light camera laser 
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Truck
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2700K Intel DP67BG SLI 2x Zotac 570 Reference 16GB G.Skill 1600MHz / 1.25v 
Hard DriveOSMonitorKeyboard
WD 2TB / OCZ Solid3 128GB Vista Pro 7 x64 / Ubuntu 22.5" Acer LCD Dollarstore special 
PowerCaseMouse
OCZ Z-Series 1000w Coolermaster HAF 922 w/ 5x YL high speeds Logitech with red light camera laser 
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post #4 of 8
Quote:
Originally Posted by test tube View Post

Problem is clock speeds

At 935 MHz core and 1522 MHz RAM my XFX 7770 gets 190 KH/s at intensity 16 or 18

Adjust clocks speeds and raise power limiter to +20%

OP said that the cards are clocked higher on the rig where he gets the worse results. He might have forgotten about the power limited.
My PC
(14 items)
 
Wife's PC
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
My PC
(14 items)
 
Wife's PC
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
  hide details  
Reply
post #5 of 8
Thread Starter 
Results are with the power limiter at 20%

as the memory goes it been running perfectly fine the few days it's not like I'm heavily loading the memory on the x58 rig

is it the CPU clock?
post #6 of 8
You need to turn the gpu core clock down. That was required to make my card faster. If the core is too fast it'll go slower -- if you don't believe me, plot it in excel, which is what I did

Use -g 1 (gpu threads) -I 18 (intensity) and --thread-concurrency 8000
Truck
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2700K Intel DP67BG SLI 2x Zotac 570 Reference 16GB G.Skill 1600MHz / 1.25v 
Hard DriveOSMonitorKeyboard
WD 2TB / OCZ Solid3 128GB Vista Pro 7 x64 / Ubuntu 22.5" Acer LCD Dollarstore special 
PowerCaseMouse
OCZ Z-Series 1000w Coolermaster HAF 922 w/ 5x YL high speeds Logitech with red light camera laser 
  hide details  
Reply
Truck
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2700K Intel DP67BG SLI 2x Zotac 570 Reference 16GB G.Skill 1600MHz / 1.25v 
Hard DriveOSMonitorKeyboard
WD 2TB / OCZ Solid3 128GB Vista Pro 7 x64 / Ubuntu 22.5" Acer LCD Dollarstore special 
PowerCaseMouse
OCZ Z-Series 1000w Coolermaster HAF 922 w/ 5x YL high speeds Logitech with red light camera laser 
  hide details  
Reply
post #7 of 8
Thread Starter 
Quote:
Originally Posted by test tube View Post

You need to turn the gpu core clock down. That was required to make my card faster. If the core is too fast it'll go slower -- if you don't believe me, plot it in excel, which is what I did

Use -g 1 (gpu threads) -I 18 (intensity) and --thread-concurrency 8000

thank you!!!!! That worked, i turned my GPU speeds to 1000 core and now both are doing 180kh+!
Edited by Xazax - 12/1/13 at 10:27pm
post #8 of 8
Np. If you want you can throw me a tip at the guiminer-scrypt donation address smile.gif
Truck
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2700K Intel DP67BG SLI 2x Zotac 570 Reference 16GB G.Skill 1600MHz / 1.25v 
Hard DriveOSMonitorKeyboard
WD 2TB / OCZ Solid3 128GB Vista Pro 7 x64 / Ubuntu 22.5" Acer LCD Dollarstore special 
PowerCaseMouse
OCZ Z-Series 1000w Coolermaster HAF 922 w/ 5x YL high speeds Logitech with red light camera laser 
  hide details  
Reply
Truck
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2700K Intel DP67BG SLI 2x Zotac 570 Reference 16GB G.Skill 1600MHz / 1.25v 
Hard DriveOSMonitorKeyboard
WD 2TB / OCZ Solid3 128GB Vista Pro 7 x64 / Ubuntu 22.5" Acer LCD Dollarstore special 
PowerCaseMouse
OCZ Z-Series 1000w Coolermaster HAF 922 w/ 5x YL high speeds Logitech with red light camera laser 
  hide details  
Reply
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