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Safe and Stable Overclock for an HD7770

post #1 of 4
Thread Starter 
Hello OCN Community! I have an HIS 7770 GHz Edition card and I already OC'd the card to 1020 clock and mem speed to 1140. I am wondering if I can overclock more, and if so, what is a safe OC for it.

Thanks smile.gif
post #2 of 4
How much you can overclock vary from card to card.

If your system stable now, you can try to slowly increase your values and stability test. To see where you stat to experience artifacts and slowly scale back to acceptable value
post #3 of 4
It is safe to O/C if you are smart. Look for your MAx Volt then from there see max GPU Offset then Mem offset. Keep it going up until you see artifacts / fail then scale down.
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X99 King Build
(18 items)
 
Da Rig2
(20 items)
 
CPUMotherboardGraphicsRAM
Intel 5930k Asus Rampage V Extreme EVGA 1080 Founders Edition Crucial Ballistix 32GB Sport (4x8GB) 
Hard DriveHard DriveHard DriveHard Drive
2 - Samsung Pro 850 2TB Raid 0 Seagate Barracuda 3TB 7200rpm 3 WD Red 4TB NAS(No array) Samsung Pro 850 1 TB 
Optical DriveCoolingCoolingOS
LITE-ON 12X Blu-ray  ThermalRight SB-IE Custom 10 fans Win 7 X64 
MonitorKeyboardPowerCase
Samsung 55" / 65" Microsoft Sculpt EVGA G2-1300 Lian Li Custom Modded PC_70 
MouseAudio
Razer Deathadder Chroma Creative X7 
CPUMotherboardGraphicsGraphics
Xeon X5660 Gigabyte X58a-ud5 rev2 (Custom Bios mod FF3 10/... EVGA Titan EVGA Titan 
RAMHard DriveHard DriveHard Drive
12GB 3 2GB dimm G Skill PC3 10700 7-8-7-22 (84... Seagate 2 x 1.5GB 3 WD Red 3TB  Samsung Pro 840 
Optical DriveCoolingOSMonitor
LITE-ON 12X Blu-ray  10+fans and Ultra 120 Extreme cooler Win 7 x64 Dell 30" 
MonitorMonitorKeyboardPower
Dell 30" Dell 30" Microsoft 4000 ergonomic keyboard EVGA G2 1300 
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post #4 of 4
My old xfx 7770 topped out at 1150 / 1300. There is no voltage control on these as far as I know. But I did have to raise power limit to +20% for it to run stable.
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Junkyard
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NAStradamous
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HTPC01
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CPUMotherboardGraphicsRAM
Intel i5 2320 @ 3.1GHz MSI B75MA-E33 HIS HD7970 3GB @ 1050 / 1700, 1.17v Patriot 2x4GB DDR3-1066 
Hard DriveHard DriveOptical DriveCooling
Crucial MX100 256GB WD Green 2TB DVDRW Corsair H50 Push / Pull 
CoolingOSMonitorMonitor
NZXT 120mm fans strapped to stock 7970 cooler Windows 10 Pro Dell 3007WFP Dell 2007FP 
MonitorKeyboardPowerCase
Dell 2007FP OCN Ducky MX Blue PC Power & Cooling Silencer MKIII 950w Cheap Garbage (free) 
MouseAudio
Logitech G602 Yardsale Special 
CPUMotherboardGraphicsRAM
Intel Core i5 3330 Asus H61 MSI GTX 750Ti Low Profile 2x4GB Hynix DDR3-1333 
Hard DriveHard DriveOptical DriveCooling
60GB Kingston SSD 1TB Seagate Samsung DVDRW CoolerMaster Gemin II 
OSMonitorKeyboardPower
Windows 8.1 + Steam Big Picture / Plex HT 50" Insignia LED 1080p Logitech Rosewill Green 530w 
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Silverstone HTPC Logitech Pioneer 2.0 tower speakers + 135w RMS Rosewill MCE Remote 
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