I recently tested multiple overclock configurations on my GTX 1070 Ti to find the best balance between performance and stability. I ran several benchmark passes while adjusting core clock, memory clock, voltage, and power limit.

System Specifications

• CPU: Intel Core i7-4790K @ 4.0 GHz (Stock)
• RAM: Kingstone 16GB DDR3 2000 MHz CL10 OC
• Motherboard: Gigabyte Z97X-UD5H
• Storage: 1TB M.2 SSD
• GPU: Zotac GTX 1070 Ti AMP Extreme (Triple Fan)

Benchmark Results / Tested with Heaven Benchmark

Test	Avg FPS	Score	Min FPS	Max FPS	Core Clock	Memory Clock	Voltage	Power Limit	Status
Stock	97.8	2465	9.1	220.0	0	0	Default	Default	Stable
OC 1	108.5	2732	33.0	234.8	+150	+200	0	140	Stable
OC 2	110.5	2783	33.7	243.3	+200	+400	0	140	Stable
OC 3	108.8	2742	33.4	233.6	+220	+450	0	140	Stable
OC 4	—	—	—	—	+220	+450	+100	140	Crashed
OC 5	—	—	—	—	+220	+400	0	140	Crashed
OC 6	110.0	2770	9.2	239.4	+220	+400	+100	140	Stable
OC 7	112.0	2821	33.9	238.9	+200	+450	0	140	Stable
OC 8	—	—	—	—	+200	+500	0	140	Crashed
OC 9	114.1	2875	33.0	244.6	+200	+400	+100	140	Best Stable

Findings

• Stock performance averaged 97.8 FPS and 2465 score.
• Best stable result achieved was 114.1 FPS and 2875 score.
• Performance gain from stock to best OC was approximately 16–17%.
• +200 Core / +400 Memory appears to be the sweet spot for this card.
• Memory overclock above +500 caused instability.
• +220 core crash limit, stuttering is present, not recommended...

Real Gaming Clocks

During actual gameplay, the card typically runs around:

• Core Clock: 2100 MHz
• Memory Clock: 4400 MHz
• Voltage: 1.093V

The Zotac AMP Extreme cooler keeps temperatures manageable, and the card maintains boost clocks consistently during gaming sessions.

Overall, this GTX 1070 Ti seems to have above-average silicon quality for a Pascal card.

https://preview.redd.it/p6sq9rqwasyg1.jpg?width=1600&format=pjpg&auto=webp&s=3c472627f79e6e93aad6e1f2e5952927fd45323e

https://preview.redd.it/loai7n0rasyg1.jpg?width=1600&format=pjpg&auto=webp&s=e31514f23dd93c216013a81b14f936bcbbd31b20