Tried overclocking. Since all I have is a stock cooler and a 120mm case fan as intake in the front. I didn't dare to push too much. I ran OCed setup for few days, temp was fine.
2200G to 3.8Ghz @ 1.3875v | Stock 3.5-3.7Ghz @ 1.4v
Vega 8 to 1300Mhz @ 1.2v (I think 1.15v would be fine, but I was tired trying too many settings that day. So settled with 1.2v) | Stock 1100Mhz @ 1.1v
Memory to 2933Mhz @ 1.36v (Preset number - Memory Try it! 16-18-18-36) | Stock 2400Mhz @ 1.2v 14-16-16-31 - XMP
I don't want to stress test my OCed setup too much. Checking all boxes in AIDA System stability test, shoots the temp over 80 degree within a minute. So stressed CPU+GPU+Memory, the ones I OCed for about 5 min and temp hits high 70s.
Stressed CPU alone for an hour, temp gone upto high 60s.
Stressed GPU alone, temp was in low 60s.
Ran Memtest86 for 1.5hrs and it was fine and good. [16-18-18-36 and auto subtimings]
CPU and GPU only OC to 3.8Ghz @ Auto voltage and 1500Mhz @ 1.2v
Memory only OC to 2933Mhz @ 1.36v (14-15-15-31 and tighter subtimings)
These are the numbers - Overclocked vs Stock. Blue fonts are from playing PUBG/emulator. This is possibly the highest load I would give and temp maxed @ 70. Other temperatures like board, VR MOS, PCH etc are 2-3 degress higher than stock when overclocked @ around low 50s max.
*i.imgur.com/OAGo2uV.png
Learned some new things. And during this process I had my own share of BSOD, No POST/Boot, Hang.
Earlier I thought about adding more case fans. But seems like what I have is sufficient enough for my use. Temps are well within the limit, I mean for stock settings.
For me overclocking is kinda overrated. Have to spend more money for cooling to squeeze performance and not to mention OCing affects longevity. And more importantly, higher electricity consumption. Instead of spending more money on cooling and electricity, we can go for better CPU and save time OCing.
Surprisingly, undervolting (0.10v) results higher benchmark score (CPUZ) than stock voltage.
If anyone interested in memory overclocking, this is a nice guide for a beginner.
integralfx/MemTestHelper