Received EVGA RTX 3060 XC 12GB used GPU as a free gift, but experienced very poor overclocking results.
Received EVGA RTX 3060 XC 12GB used GPU as a free gift, but experienced very poor overclocking results.
I received an EVGA RTX 3060 XC with 12GB of RAM as a free gift from a friend. That friend had previously used it for cryptocurrency mining. When I attempted to overclock it, I noticed a very limited improvement in offsets. The settings available are +100% voltage slider, +11% power limit, +140MHz core offset, and only +300MHz memory offset. At +400MHz memory offset, I rarely see any artifacts—only occasional glitches lasting about 1 to 2 minutes, such as a stray polygon flashing for a brief moment, a stripe, or a blue-colored polygon for a single frame. However, pushing the value higher doesn’t result in rapid increases; it only gradually rises up to +900MHz, with only one artifact every few seconds (clearly visible but not causing crashes). FPS keeps climbing to +900MHz without any stuttering or regression. The artifacting becomes more noticeable every few seconds. The core clock remains unstable beyond +140MHz, and I suspect lowering it another +10MHz might be necessary if it crashes again. It failed after about 10 minutes in the Heaven benchmark at +150MHz. Temperatures appear normal, with the hotspot not excessively high. Under full gaming load, the GPU core reaches around 69-71°C, even with fans running at maximum speed and RPM. At idle, the fans slow down to 0 RPM using a custom curve, and the GPU stays around 22-26°C after 20 minutes of inactivity. Some users claim they’ve reached memory clock offsets beyond +1000MHz, but my model doesn’t reach that high and it hasn’t started error correction or dropping frames. Should I consider replacing all thermal pads and paste? It’s possible the previous owner damaged them during cleaning or application, or the paste didn’t adhere properly. Perhaps the old pads are dry and cracked.
It might be any or all of those things.
The card was mined in a way that often forces memory speeds and temperatures to their maximum limits. Over extended periods, this can cause the chips to degrade.
Numerous mining cards no longer support default speeds, so it's a good thing you're able to overclock.
They lack true understanding of their work. Some individuals simply reuse another person's answer sheet without verifying again.
2) Silicon lottery continues its usual pattern.
3) The memory controller is still new.
4) Overclocking has a limited lifespan, gradually losing effectiveness. The memory inside the core also deteriorates, needing a downclock or higher voltage to maintain stability.
-The memory voltage remains constant from vbios, leaving only the downclocking option.
-When degradation begins, it becomes a gradual decline, repeatedly lowering the clock until instability returns, and restarting the cycle.
-The more extreme the adjustments, the quicker the settings fail. The miner friend likely overclocked the memory for optimal gains. Their approach remains unclear—could have been light, heavy, or somewhere in between.
I recommend keeping the memory clock at its default setting if you plan to retain it.
During games and mining, different components are prioritized. Power delivery/VRM is focused on gaming, while the memory controller is targeted for mining. If either fails to handle heat, it won’t help in this situation.
Note: The voltage adjustment slider offers no real impact. It functions more as a suggestion to the GPU, allowing higher voltage use, though GPU Boost usually disregards it.
Don't hesitate to think again—you're already aware it's been used for mining crypto. Just like a taxi, a 2-year-old one will show 500% more wear than a normal car at the same age. That GPU must have suffered a lot! You might even consider returning it via RMA, hehe.
It's a balance. Consider the miners' point of view, even if it's fair. GPUs aren't inexpensive. Higher quality ones only add more expense. Therefore, from the beginning, the miner is already losing money. Then there are the power needs and the associated costs.
In the best possible situation right now, a miner running at 500+ days of solid mining just to break even. The only way to reduce that gap is by heavily undervolting the card while keeping it stable, since the benefits from OC mining don't balance out the power consumption or expenses.
Most serious miners avoid increasing memory clocks and taking risks like damaging the card, experiencing glitches, or bit-flips. They stick to undervolting to lower power usage without sacrificing stability. Build-zoid has shared several videos about this topic, showing no signs of damage from mining GPUs.
This approach is for long-term sustainability. It's not about quick gains through risky upgrades.
OC is OC, there are no fixed limits—minimums or maximums don't exist. You end up with what the technology offers, depending on the luck of the Silicon Lottery. Any wear and tear is just part of the process, if it happens at all.
Voltage, frequency...everything.
Does it work?
If yes, keep it as is.
my friend acquired four GPUs all in the same category, using them for mining. he kept the top one and shared the next best one with me. one of the others performed extremely poorly, crashing even at high settings. his strongest GPU ran smoothly with 2100mhz clock and over 1000mhz memory, consistently performing well in games and tests. i think the other GPU he had was either lucky or newer. for now, i’m sticking with +137mhz core and +200mhz memory, as overclocking doesn’t really help much. technically that’s equivalent to +140, so it should work fine.
Dude, it makes sense to charge for it, if it still works well that’s all. If it’s still great, selling it for $150 is better than giving it away for free. Take what you have and enjoy it while it lasts—especially since you can’t afford it right now. If you’re able to buy a new card, sell it on eBay for $150; many would even pay that, even though it’s just stock. And if you’re not in a position to buy one, you could give yourself a used 3060 Ti that usually costs $250-300 in the US.
After all, congratulations on getting a GPU for free—it’s a legendary friend, you don’t need to explain how he keeps it. Lucky he gave it to you! If I were him, I’d sell it on eBay for $100.
Yeah, it's really impressive. I received it a bit early for the birthday.
😀
It's a significant improvement over the 1650 I had before.
The VRAM is quite large.
After some more testing and memory overclocking, I saw only small improvements, so I decided to keep my memory frequency at its default.
The core clock can still run at 137 MHz, which provides a noticeable FPS boost. It's not huge, but it's a clear increase in performance.
In comparison to a 1650, the 3060 offers a pleasant improvement. I recommend keeping it at its standard setting and appreciating the card in its current form. Your card has been used quite intensely—don’t try to finish it off.