Hi,
I've been following this forum from time to time, and only joined today for my first post. Although technically minded I have limited overclocking experience, please bear with me, thanks.
Two Gigabyte RTX 2080 cards were tested to check and compare their health and performance:
VCard 1=Windforce 8Gb OC (Bios F4Beta) and VCard 2= Gaming 8Gb OC (Bios F8), with max Power of 120 and 122 %TDP after Bios upgrade.
There was no problem running AB OC scanner its included Test with the first card. On the other hand, for the second one (Gaming) the monitor screen went black for several seconds (1s to 10s), and usually, this happened just at the change over from Point 1 to 2, and 3 to 4 and the end of the scan. The Power Limit (and Temperature Limit) slider was tested between default and max out and also the voltage control and monitor locks were toggled and not to avail. I let the room temperature drop for the tests between 13.6-15.7C, GPU max temp =56-72C (+42 to 52 relative to RT), Gaming has a little better cooler than Windforce. The Fan was tested with Auto and custom curve and also with a set value of 80-100%.
For stress tests, I have also used 3DMark , FurMark, Heaven, ... None of these runs exposed instability for either of these cards though. The best average OC from MSI AB OC Scan tool were: Windforce = 73MHz (max GPU Temp = 68C, RT=13.6) and Gaming = 61MHz (Max GPU temp =62C, RT=15.6), repeats for gaming had more variability 53-61MHz, averaging in the 50s.
Is the screen going black a typical "instability" as quoted below?
Can these be a sign that the "Gaming" card having some underlying issues not present in the "Windforce" card? Is it power limited? (Did forget that the CPU had been set on Boost 4200 -> 4800 MHz when Benchmark a couple of days ago. Platinum 550W PSU, M.2 SSD, 3 120 PWM case fan, low profile Noctua CPU fan. Silverstone confirmed the PSU should be fine.)
Interestingly the hickups of the Gaming card never prevented it from failing the OC scan, and often the scan at point 4 was taking longer with no black screen until the end of run scan flicker.
Another note, I noticed that with constant fan setting, say 100%, for Point 4, the fan control seemed to have switched to Auto/Custom and then reverted back to 100% once the scan had ended. Anyone else noticed this?
The goal here is not to overclock my GPU but to test the health and performance of these cards. One was a new card but looked like an opened box (Windforce), the other was a like-new item (Gaming), which didn't come in the original box. This made me concerned and suspicious (especially for the Gaming OC card - hence these quick series of benchmarking- and stress-tests. I will keep one in the end and these quick tests were carried out to help decide.
Any thoughts and recommendations for testing these two cards?
Thank you for your inputs, it'll be greatly appreciated.
D
Just follow the directions in the video with a minor difference:
After scanning IMMEDIATELY apply your curve and save it to a profile. Or your curve will be lost and you have to start all over again.
Also do not slide the power and temp limiter before scanning. That will create instability issues. Leave them as default and do the scanning.
As for fan curves you can do 100% fan speed before scanning, but then that means the stability is only good if you blast it at 100% fan all the time.
For me I just used a custom fan curve and start scanning afterwards.