Well, they might have been able to do it like this: i.redditmedia.com/--EzP2t4YMf9TCYeibbG29tu3Ajfeje5QjrvCk8g1uI.png?w=572&s=d4d21987be37de7cfc9679f1aff4d5ea - but I do not know if RyzenMaster would correctly show it as 4500Mhz.
You said that R7 2700X is first one... this site shows every ryzen out of TDP.
Am I missing something? isn't this the age old "TDP isn't power consumption" issue? If you use 140W, some of it is actually transferred to work and not all of it wasted as heat?
No limit or 140W TDP = 1821p
Limit at 105W TDP = 1764p
When you look at his graph you can say that some CPu will do same power at 100MHz higher or other way around. Since @The Stilt went only for 4.1GHz I assume that was its maximum at safe voltages, which could mean that he got really bad CPU. Der8auer test he got 4.3GHz on all cores.
Hm, so could this actually mean that with PBO and XFR2, everyone is subject to silicon lottery as worse chip will have lower limits for these features? So seeing quiet "big" differences in benches is to be expected?
FYI Coffee Lake behaved the same when Z370 launched. My presumably 65W TDP i7 8700 installed in a MSI Z370 board had no power limit set in place, IIRC the max package power in Prime 95 was 130W+ and in CB 15 was 90W+.The 8700K is actually able to sustain the advertized all-core turbo frequency (4.3GHz) in most workloads, even when the power limits are configured as they should (95W/119W).
I tested this after 8700K was launched and basically everything else but highly 256-bit workloads maintained 4.3GHz at 95W.
FYI Coffee Lake behaved the same when Z370 launched. My presumably 65W TDP i7 8700 installed in a MSI Z370 board had no power limit set in place, IIRC the max package power in Prime 95 was 130W+ and in CB 15 was 90W+.
It's all down to the MB manufacturer though, and I assume the same applies for Ryzen: on high performance boards they will forego power limitations by default to get bigger scores in benchmarks. Budget boards with lower spec power delivery will be configured to abide official TDP.
You said that R7 2700X is first one... this site shows every ryzen out of TDP.
The only premium boards one can still reasonably expect to play the spec sheet game are mITX boards, for obvious reasonsYou'd have to go through everyones boards to see what the manufacturer implemented and for competitive reasons the high end boards will be chucking the power limits out the window for the extra edge.
Since @The Stilt went only for 4.1GHz I assume that was its maximum at safe voltages, which could mean that he got really bad CPU. Der8auer got 4.3GHz on all cores.
Holy hell
My Gigabyte AX370 Gaming k7 with overdrive enabled claims it's pushing 1.7V through my CPU.
Look at the "CPU Core Voltage SVI2 TFN" (HWInfo) instead of what RyzenMaster or other applications are showing.
The CPU itself can never request higher than 1.550V voltage as 1.5500V is the highest VID the SVI2 interface supports.
Use of voltage offsets from the controller side is obviously possible, however the CPU itself cannot control those.
That's what I've been looking at. My guess is that my board (X370 Taichi) provides a higher voltage than what the CPU actually requests on default settings causing safety limiters to trigger early, but I'm not sure how to verify. I was stuck in the 3.9x GHz boost range before applying the offset and now it sticks at 4.1 or just below, even in Prime95.
So even with power limits essentially lifted, you can still gain clockspeed by undervolting with an offset?
My board is already AGESA 1.0.0.2a.
So even with power limits essentially lifted, you can still gain clockspeed by undervolting with an offset?
My board is already AGESA 1.0.0.2a.
Yes. I will prove it later.
Obviously this is great for additional tinkering.