This 2600x can't get better. I tried 4.1ghz @ 1.35v, it crashed right away. couldn't get it stable, except with high vcore.
as for temp, my Noctua NH-U12S with push pull, I get around 78C under full load for 4 hrs. On stock clock, full prime, I get around 68C, but I lea ve my fan curve to 20% fan speed until 60C.
Case fan kick in when the GPU gets high, but I might try to do it with CPU to see instead. My 1700 was cooling fgine at 3.6ghz 1.32v, but seems like the 2600x is a different story
Silicon lottery I suppose. I will say I ran at 4ghz for quite a while and missed nothing. I'm also running a larger cooler to get the temps I see, and yeah, I have case fans following the CPU sensor. CPU fan runs at a minimum of 40%, gradually ramping up to 60% at 41C, and maxing at 65C. Sounds crazy but the fan on the Scythe Mugen MAX is dead quiet, not to mention effective. It is barely audible in my case at 100%. It's a quick jump up, but for most things it barely hits 50C so it still runs dead quiet. ML140 front intakes run at 50% @ 55C, again maxing at 65C.
Worth mentioning, my fan curves are that way because of some weird offset with my mobo. The actual CPU core temp readout can go as high as 80C while another simply called "CPU" is what my fans bind to, and it often reads as much as 20C lower, so to stay out of that range I have to set my fan curves lower. Ultimately the two readouts will equalize, but that can mean 10 minutes at 80C before fans pick it up. I think it's actually socket temp. Annoying.
My observation running Ryzen 1 vs Ryzen 2 is that although they are more power efficient, often allowing higher clocks at the same voltage, they can still run comparatively warmer at those high clocks because of how current ramps up with infinity fabric as clock speed increases on Ryzen 2. Under increasing load the balance tips further towards infinity fabric sucking up a butt ton of juice, and the net result factoring in the higher clocks tends to be much more current. That may explain why your 1700 was cooling fine at 3.6 while your 2600x crosses into the max temperatures it can still run stable at running 4ghz, even with two less active cores. The power difference is greater than it may seem on the surface, but I bet you'd see it if you watched your sensors, specifically looking at wattage and current readouts.
BTW, lucky for 1.23v @ 4.1ghz
Oh definitely. Part of it I think is sensor undershoot, but temperatures tell me that number isn't far off from reality. Still, most 2600's will do 4.1 or even 4.2 no problem. One thing worth mentioning, when I first got my 2600, I had trouble overclocking on the stock cooler. Couldn't pass 4ghz. Temperatures were high and it took too much voltage to make it stable. It took more voltage to run that, then, at 4ghz than it takes now to run 4.2. It seems like Ryzen really doesn't like higher temperatures than 70C. Stability starts to tank and ironically it seems to require more voltage to hold the same clocks stable at higher temperatures, thus further elevating temperatures and compromising stability. That's where I would run into trouble. Without a cooler to balance it, there's literally no sweet spot to be had.
Just food for thought. For all I know its nonsense and I missed something back then, but I can say for sure that dropping a much beefier cooler on allowed me to get much lower vcore. Can't even begin to explain why that really is. I know it doesn't make sense. Maybe something to do with temperature fluctuations. Maybe big jumps in power consumption coupled with too much heat too fast or something. *shrugs*
Thanx in advance.
