ZOTAC GAMING GeForce RTX 3070 AMP Holo LHR Video Card Review

The FPS Review may receive a commission if you purchase something after clicking a link in this article.

Overclocking the ZOTAC GAMING GeForce RTX 3070 AMP Holo LHR

How do you overclock a ZOTAC GAMING GeForce RTX 3070 AMP Holo LHR video card? 

Before we begin to overclock, we need to find out the real-world in-game GPU frequency the video card is operating at by default.  That way we can find what frequency we are overclocking from and how much gain we get in overclocking.  Keep in mind that NVIDIA GPU Boost already adjusts the GPU frequency dynamically to utilize most of the potential that is there.  This means it will already clock the GPU frequency well above the quoted Boost Clock even without overclocking.

Default Clock

The base clock on this video card is 1500MHz, which isn’t very helpful.  More importantly, it is the GPU Boost Clock that makes the difference and it is set at 1785MHz on the ZOTAC GAMING GeForce RTX 3070 AMP Holo LHR.  This is 60MHz higher than the Founders Edition GPU Boost of 1725MHz.

ZOTAC GAMING GeForce RTX 3070 AMP Holo default gaming clock speed performance

The ZOTAC GAMING GeForce RTX 3070 AMP Holo LHR settled in around 1905MHz but also rattled around between 1980MHz and 1920MHz quite frequently and maintained a temperature of 68.1 degrees Celsius. Compared to the Founders Edition that averaged 1875MHz, the ZOTAC GAMING GeForce RTX 3070 AMP Holo LHR declares victory over the Founders Edition by about 45MHz.  Memory in both the Founders Edition and the ZOTAC GAMING GeForce RTX 3070 AMP Holo LHR is set to 14GHz using GDDR6 memory.

Highest Stable Overclock

To dial in the maximum overclock for the ZOTAC GAMING GeForce RTX 3070 AMP Holo LHR, we used ZOTAC’s FireStorm software that makes lots of knobs to turn and levers to pull available for tuning enjoyment.

ZOTAC GAMING GeForce RTX 3070 AMP Holo LHR GPUZ overclocked firestorm configuration

We started by maxing out the Power Target at 110% and boosted the GPU Temp Target up from 83C to 90C. We then cranked the fans up to 100%. There was not a knob present for modifying voltage, however, given the low power budgets on the RTX 30 Series that we have seen so far, adding voltage has not been necessary as it only increases power consumption and reduces how far GPU Boost will push the core clock speed up.

With the power matters settled, we started by pushing the core clock up as high as it could go without touching the memory side of the equation. We were able to pick up an extra 135 MHz on the slider offset before we started crashing.

Next up, we set the core back to stock and boosted the memory to see how far we could take it. It appeared to be happiest at +1200MHz (2400MHz effective). This is a boost to 16.4GHz GDDR 6 over the stock of 14GHz GDDR6X.

Putting it all together, we first tried our max individual clocks together to see how it worked. This gave us a final stable overclock of 1635MHz core clock, 1920MHz boost clock, and 16.4GHz memory clock.

ZOTAC GAMING GeForce RTX 3070 AMP Holo overclocked performance over time

Comparing the sustained GPU frequency to the stock frequency, we see that the observed overclocked frequency averaged out to 2025MHz. This is a 5.4% increase over the stock clocks and an 8% boost over the stock Founders Edition performance. The memory at 16.4GHz is 17.1% faster than the stock clock as well.

Join the discussion in our forums...

David Schroth
David is a computer hardware enthusiast that has been tinkering with computer hardware for the past 25 years and writing reviews for more than ten years. He's the Founder and Editor in Chief of The FPS Review.

Recent News