Question Overclocking my RTX 2080 – unusually stable high RAM overclock

[Pascal92]

Hello dear overclocking enthusiasts

I have built a new computer a few months ago (see specs below) with an RTX 2080. I started overclocking the RTX last week and following this guide: https://www.overclockersclub.com/guides/nvidia_rtx_2080_oc_guide/.

First, I only overclocked the memory, letting the GPU clock untouched. I achieved around +1500 Mhz in the benchmark. Above that offset, visual artifacts started appearing and the benchmark eventually crashed. The artifacts were like red fireworks here and there in a flickering fashion. Then I reset the memory clock and overclocked only the GPU and reached a stable offset of +155 Mhz. Combining the two, my stable setting I have found now is at +1200MHz (8200 MHz) for the memory and +140MHz (1980 MHz) for the GPU. I've played several hours now with these settings, and the game crashed only one time.

I did some research online and found from other overclocking guides stable memory offsets of about +700MHz as reference values. Now I dont know if I am just very lucky, or if I'm about to kill my graphics card. I would appreciate comments regarding this.

In the screenshot I am running the Unigine Heaven Benchmark as a GPU stress test. The memory clock runs at 8200 Mhz and the GPU is at 1980 Mhz and the benchmark is stable. The overclocking settings are also visible.

Screenshot:

https://imgur.com/GeCaE13

View: https://imgur.com/GeCaE13


Thank you in advance

Specifications

• Mainboard: Asus ROG Strix Z390-F
• Graphics: KFA2 RTX 2080 EX (Boost Clock 1755MHz, Memory 7000MHz)
• CPU: Intel i5-8600k (hexacore) @ 4.7 Ghz boost frequency (Dynamic Voltage)
• GPU: Nvidia GeForce RTX 2080 @ 140 Mhz Core offset, 1200 Mhz Mem offset
• 512 GB SSD
• CPU Cooler: CoolerMaster ML240l AIO liquid cooler

 

[King_V]

Are those numbers accounting for the fact that it's DDR? ie: the +1200 is actually +600, but at double-data rate it's labeled as 1200?

I haven't ever overclocked a video card, so take that with a boulder of salt. But 1200 to 1500 overclock of the memory seems like it shouldn't be possible.

 

[Pascal92]

Are those numbers accounting for the fact that it's DDR? ie: the +1200 is actually +600, but at double-data rate it's labeled as 1200?

I haven't ever overclocked a video card, so take that with a boulder of salt. But 1200 to 1500 overclock of the memory seems like it shouldn't be possible.

Yes, the +1200 gives a Clock of 8200 MHz, and effectively it will be 16400 MHz instead of 14000 MHz.