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ZOTAC GeForce GTX 770 Extreme Edition Detailed


Editor & Senior Moderator
Staff member
Oct 9, 2007
34,486 (9.19/day)
Hyderabad, India
ZOTAC launched its premium GeForce GTX 770 Extreme Edition SKU in the Greater China region. The SKU outranks AMP!, and offers a suite of enthusiast features, such as a strong VRM, and better air cooling. It's not unlike the GTX 680 Extreme Edition or GTX 670 Extreme Edition. To begin with, the GTX 770 Extreme Edition features a slightly updated Gamer Force cooler, with higher aluminum fin density for the GPU heatsink, and a chunkier metal heatsink to cool the VRM. A back-plate cools components on the reverse side of the PCB.

The GTX 770 Extreme Edition features the same exact PCB as its predecessor, featuring a 12-phase (8+3+1) VRM, which makes use of noise-free chokes, a combination of conductive polymer and tantalum capacitors, three proadlizers (multi-phase capacitors for power conditioning), and International Rectifier PowIRstage driver-MOSFETs. A combination of CHiL CHL8318 (8-phase) and CHL 8214-03 (4-phase) chips are used to run the VRM. The main heatsink uses a copper base (not vapor-chamber) to make contact with the GPU, from which five 8 mm-thick nickel-plated copper heat pipes sprout out, transporting heat to the far-reaches of the heatsink. A pair of 92 mm PWM-controlled fans ventilate the heatsink, which are held by a sporty aluminum shroud.

The GTX 770 Extreme Edition ships with clock speeds of 1150 MHz core, 1202 MHz GPU Boost, and 7.20 GHz memory. These clocks can be handled by the air cooling solution. An obscure DIP-switch lets you enable an LN2-friendly OTP mode, which bypasses a few electrical protections, making sure NVIDIA's limits don't come in the way of you and overclocking glory. Lastly, there's the OC+ module support, which is an internal USB connection to a device with buttons that let you control clocks, fan-speeds, voltages, among other things. Right next to the OC+ port are voltage measurement points. Find a review at the source.

Source: Expreview
Jan 13, 2009
419 (0.13/day)
Is nVidia allowing unlocked voltage on the 770? If not, I don't see the benefit of these upgraded versions.
Jan 13, 2009
419 (0.13/day)
It's not. NVIDIA probably won't offer warranty for these chips to ZOTAC.
So does this dip switch unlock the voltage? I'd be curious to see just how much difference extra voltage would make in maximum clocks. If Zotac has bucked nVidia on this, I hope they are rewarded by enthusiasts with enough sales to justify their move and show nVidia. I know I, for one, will recommend them. If this is the case.
Feb 8, 2008
2,313 (0.64/day)
System Name Keep spending on me
Processor i7 4790K ( 4.4 Ghz stock )
Motherboard Maximus VII Impact z97
Cooling Corsair H90 140mm AIO
Memory 16 GB Corsair Dominator Platinum DDR3 1866 Mhz
Video Card(s) ASUS GTX 1050Ti Strix
Storage M.2 Samsung NVMe 960 Pro 512 GB
Display(s) Asus PG258Q 1080p 240Hz G-sync
Case Cooler Master Mastercase 3
Audio Device(s) SupremeFX II Impact
Power Supply Corsair AX760
Mouse Razer Deathadder Chroma
Software Win 10 64 Bit
Benchmark Scores Gaming at high performance is my priority
And as usually they sell it only japan/china... :shadedshu
Aug 1, 2009
868 (0.28/day)
Baguio City, Philippines
System Name hmmm...
Processor Intel Core i7-4790K // AMD Athlon II X4 630
Motherboard Asus Maximus VII Gene // MSI 785GM-E65
Cooling Noctua NH-D15S // Noctua NH-U12S
Memory 4x8gb DDR3 2400mhz G.Skill Sniper // 2x2gb DDR3 1333mhz GSkill Value RAM
Video Card(s) Zotac GTX 980 Ti // Palit GTS 250
Storage Samsung 850 EVO 500gb + 3x2tb WD20EZRX // 1tb Seagate 7200.12
Display(s) LG IPS234V // AOC 2217V
Case Corsair Graphite 760T // Lian-Li PC-7 Plus
Audio Device(s) Onboard // Onboard
Power Supply Corsair AX650 // Cougar CM 550
Mouse Corsair Vengeance M65 // Logitech MK120
Keyboard Corsair Vengeance K70 // Logitech MK120
Software Windows 10 Professional x64 // Windows 7 Professional x64
I like it! I hope it becomes available here... :)
Oct 26, 2011
3,121 (1.37/day)
Processor Ci7 5960X
Motherboard RVE
Cooling Triple Aquacomputer AMS 840 with D5
Memory Some random DDR4
Video Card(s) GTX 1080 Ti
Storage 960 EVO
Display(s) Dell U3011 2560x1600 + Dell 2408WFP 1200x1920 (Portrait)
Case Dimastech Bench EasyXL
Audio Device(s) Essence STX
Power Supply AX 1500i
Software Win10
Big kudos to Zotac.
May 2, 2010
67 (0.02/day)
System Name Max LGA775 SLI
Processor Q9650 @ 4.401Ghz
Motherboard Gigabyte EP45-UD3P
Cooling NH-D14
Memory G.Skill DDR2 "Pi" 9600
Video Card(s) GTX 285 SLI (756/1692/1350)
Storage Crucial C300 128Gb SSD, 4 x 1Tb HD
Display(s) Samsung T260, T260HD
Case HAF 932
Power Supply Antec TPQ-1200
Software Windows 7 x64 Ultimate
Wow, take a look at the back of the pcb. Loaded with caps and mosfets.