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Beginner Overclocking with the Sapphire Radeon 7870 OC Ghz Edition

post #1 of 3
Thread Starter 
Hey all!

So I just started tinkering around with overclocking yesterday, and I boosted it in 10mhz intervals, stock is 1050mhz, and ran 15 minutes of FurMark to test it out. I've been holding stable at 60c with a fairly moderate fan curve.



Just wanted to know how high I could push my card and if I need to up the voltage as I go? Also what would happen if I started increasing memory clock?

Thanks fellow OC'ers! smile.gif

-Demos
post #2 of 3
1150MHz with stock volts is very, very good. You can try to increase it to get higher clocks (1250MHz range) but I think you're limited to 1.3v.

Here's a simple guide :
http://www.guru3d.com/articles_pages/radeon_hd_7870_overclock_guide,2.html

You need to monitor VRM temps as well using something like GPU-Z or Everest Ultimate .
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TheSadFlute
(16 items)
 
DyingHeart
(17 items)
 
 
CPUMotherboardGraphicsRAM
i7-6700K TUF Sabertooth MSI 1080 Ti 16GB 2400MHz C15 
Hard DriveHard DriveHard DriveCooling
Corsair 480GB LE 3TB WD Green Sammy 500GB 850 EVO H100i 
OSMonitorKeyboardPower
Windows 7 Pro  BenQ XR3501 Logitech G710+ EVGA G2 750W 
CaseMouseAudioAudio
Cooler Master Stryker Logitech G602 Asus Strix Nakamichi 5.1 
CPUMotherboardGraphicsRAM
Phenom II X4 965BE  Sapphire 790X Zotac GTX650  4GB Corsair 1066 DDR2 (1GBx4) 
Hard DriveHard DriveCoolingCooling
G.Skill Phoenix Pro 120GB WD 2TB Green Stock 3x120mm UQ fans 
OSMonitorKeyboardPower
W7 Pro SP1 x64 LG 21' 1680x1050 Genius  Corsair CX600 
CaseMouseMouse PadAudio
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Audio
Logitech G35 
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post #3 of 3
Thread Starter 
Quote:
Originally Posted by eXXon View Post

1150MHz with stock volts is very, very good. You can try to increase it to get higher clocks (1250MHz range) but I think you're limited to 1.3v.

Here's a simple guide :
http://www.guru3d.com/articles_pages/radeon_hd_7870_overclock_guide,2.html

You need to monitor VRM temps as well using something like GPU-Z or Everest Ultimate .

You're fantastic, thanks smile.gif I'm now up to 1200 on stock volt, still stable. Temps around 65c so I'm happy. Will keep pushing it a little further with help from that guide smile.gif +Rep to you good sir!
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