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[Official] 7870 Tahiti LE (XT) Owners Club - Page 520

post #5191 of 5244
Quote:
Originally Posted by bebius View Post

Does it look ok to modify the bios like below to lower the voltage?

Yep should be ok.
post #5192 of 5244
Quote:
Originally Posted by bebius View Post

Does it look ok to modify the bios like below to lower the voltage?



EDIT: I finally made it and modified the bios but had to remove every oc profile in AB and amd drivers in order the card to work properly. But now I 'm happy running cool again @ 1100Mhz and 1180mV.

That will work fine. Still odd though that AB won't change voltage anymore.
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DeskoSaurus X
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CPUMotherboardGraphicsRAM
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EK XE 480 + EK CoolStream PE 480 10x Phanteks + 2x Cougar Vortex MCP50X + MCP50X Windows 10 Pro 
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ViewSonic VX2250 22" LED Generic HP Corsair AX860i Lian-Li DK-Q2X 
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post #5193 of 5244
Quote:
Originally Posted by bebius View Post

Does it look ok to modify the bios like below to lower the voltage?



EDIT: I finally made it and modified the bios but had to remove every oc profile in AB and amd drivers in order the card to work properly. But now I 'm happy running cool again @ 1100Mhz and 1180mV.

After using stock clocks/voltage (with MSI AB) for years and crashes and errors from a few months ago because this stupid stock high 1.256 voltage, I edited my BIOS thanks to this forum and my 7870xt is working amazing, more stable and I uninstalled AB finally! My settings:



Also I tested this memory timing patch: http://www.overclock.net/t/1554360/tahiti-memory-timings-patch-for-hynix-vram and it's working but unstable because artifacts appears with this patch applied on my 7870xt (Hynix AFR memory)
post #5194 of 5244
Quote:
Originally Posted by dhaern View Post

Also I tested this memory timing patch: http://www.overclock.net/t/1554360/tahiti-memory-timings-patch-for-hynix-vram and it's working but unstable because artifacts appears with this patch applied on my 7870xt (Hynix AFR memory)
Funny that i find these things AFTER i no longer use the card. Btw i went to Nvidia GTX 1080 and gave my 7870XT to my nephew. Had to upgrade his computer to be able to handle such beast lol. But atleast it's far more powerful than anything he can buy himself. Downclocked from my previous 1240/1500 to 1000/1500 and lowered the voltage to 1100. Also reinstalled the stock shroud and fan.
post #5195 of 5244
How can I get more performance out of my card? I can only get up to about 1160 MHz on the core(+20% power) before games crash from instability.
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Vofira
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post #5196 of 5244
Quote:
Originally Posted by SovietDash View Post

How can I get more performance out of my card? I can only get up to about 1160 MHz on the core(+20% power) before games crash from instability.
Silicon lottery. Not all cards are created equal. Mine did 1240Mhz but with big heat, overheating VRM and high voltage. Best clock/voltage spot i generally around ~1100Mhz.
post #5197 of 5244
Quote:
Originally Posted by SovietDash View Post

How can I get more performance out of my card? I can only get up to about 1160 MHz on the core(+20% power) before games crash from instability.
If you're already pushing the volts to their max, there's not much you can do. If you're on stock volts then you can bump those up to try and get it more stable. Watch those vrm's though, they don't like added voltage or power if I remember correctly.
post #5198 of 5244
Oh and to anyone having problems with the unstable clock and fluctuating clock, try setting ULPS to disabled and enabling unofficial overclocking support without powerplay. This was a pretty well known fix that is buried a couple hundred pages back I'm sure.
post #5199 of 5244
Just thought I'd sign up to add my tuppenceworth.
Picked one of these up used on everybodies favourite auction site for £50.
A Myst, that performed like a 4870 if you overclocked it 1 Mhz !!

I had the "Extreme" fluctuations - drops to 500 then back up to 1000 (OC setting).
Heaven Extreme 1600x900 was a slideshow, scoring 600pts & 20 odd FPS.

This thread has been invaluable.
Tried everything including the above mentioned Afterburner settings on powerplay.
Nothing worked.

Card came with 031 Bios.

Easy fix was to install 028 bios.
All ok after bios "downdate"!

Thanks to all who posted on this clock problem. smile.gif
post #5200 of 5244
Quote:
Originally Posted by ParaHandy View Post

Just thought I'd sign up to add my tuppenceworth.
Picked one of these up used on everybodies favourite auction site for £50.
A Myst, that performed like a 4870 if you overclocked it 1 Mhz !!

I had the "Extreme" fluctuations - drops to 500 then back up to 1000 (OC setting).
Heaven Extreme 1600x900 was a slideshow, scoring 600pts & 20 odd FPS.

This thread has been invaluable.
Tried everything including the above mentioned Afterburner settings on powerplay.
Nothing worked.

Card came with 031 Bios.

Easy fix was to install 028 bios.
All ok after bios "downdate"!

Thanks to all who posted on this clock problem. smile.gif

Enjoy your "new" card. thumb.gif
DeskoSaurus X
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It Does Stuff
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CPUMotherboardGraphicsRAM
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Hard DriveHard DriveCoolingCooling
2x Crucial MX100 + 960GB M500 2x WD Blue RAID EK Supremacy EK-FC R9-290X Lightning 
CoolingCoolingCoolingOS
EK XE 480 + EK CoolStream PE 480 10x Phanteks + 2x Cougar Vortex MCP50X + MCP50X Windows 10 Pro 
MonitorKeyboardPowerCase
ViewSonic VX2250 22" LED Generic HP Corsair AX860i Lian-Li DK-Q2X 
MouseMouse PadAudioOther
Logitech G700 XTRAC Ripper TC Electronic Impact Twin Corsair Commander Mini 
OtherOther
Schiit Vali Kanto Yumi (Bamboo) 
CPUMotherboardGraphicsRAM
FX-8350 4.95GHz 24/7 GA-990FXA-UD3 Sapphire 7870 XT  Mushkin Redline 997051 @1866 8-8-8-24 1T 
RAMHard DriveHard DriveCooling
Crucial Ballistix Tactical Tracer @1866 8-8-8-2... Black WD6401AALS 2x WD10EZEX Raid-0 EK Supremacy 
CoolingCoolingCoolingCooling
10x Cougar Vortex PWM 3x Helix EK VGA Supremacy Acetal Alphacool NexXxos ST30 240mm, 2x XT45 240mm XSPC X2O 750 
CoolingOSMonitorKeyboard
Jingway DP-600 pump Windows 8.1 Pro x64 ViewSonic VX2250 22" LED Generic HP 
PowerCaseMouseAudio
Rosewill HIVE-650 CM 690 II Advanced B&W  Logitech G700 Xonar DG 
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Tc Electronic Impact Twin Fan Controller: Aerocool X-Vision 2x Swiftech PWM Splitter 
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DeskoSaurus X
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It Does Stuff
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CPUMotherboardGraphicsRAM
4790K 4.7 GHz Z97 MPOWER MAX AC 290X Lightning G. Skill TridentX 2x8GB 10-12-12 
Hard DriveHard DriveCoolingCooling
2x Crucial MX100 + 960GB M500 2x WD Blue RAID EK Supremacy EK-FC R9-290X Lightning 
CoolingCoolingCoolingOS
EK XE 480 + EK CoolStream PE 480 10x Phanteks + 2x Cougar Vortex MCP50X + MCP50X Windows 10 Pro 
MonitorKeyboardPowerCase
ViewSonic VX2250 22" LED Generic HP Corsair AX860i Lian-Li DK-Q2X 
MouseMouse PadAudioOther
Logitech G700 XTRAC Ripper TC Electronic Impact Twin Corsair Commander Mini 
OtherOther
Schiit Vali Kanto Yumi (Bamboo) 
CPUMotherboardGraphicsRAM
FX-8350 4.95GHz 24/7 GA-990FXA-UD3 Sapphire 7870 XT  Mushkin Redline 997051 @1866 8-8-8-24 1T 
RAMHard DriveHard DriveCooling
Crucial Ballistix Tactical Tracer @1866 8-8-8-2... Black WD6401AALS 2x WD10EZEX Raid-0 EK Supremacy 
CoolingCoolingCoolingCooling
10x Cougar Vortex PWM 3x Helix EK VGA Supremacy Acetal Alphacool NexXxos ST30 240mm, 2x XT45 240mm XSPC X2O 750 
CoolingOSMonitorKeyboard
Jingway DP-600 pump Windows 8.1 Pro x64 ViewSonic VX2250 22" LED Generic HP 
PowerCaseMouseAudio
Rosewill HIVE-650 CM 690 II Advanced B&W  Logitech G700 Xonar DG 
AudioOtherOther
Tc Electronic Impact Twin Fan Controller: Aerocool X-Vision 2x Swiftech PWM Splitter 
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