The desktop CPU fight between Intel and AMD is a many sparkling it’s been in years. AMD has been fast throwing adult interjection to their new Zen core microarchitecture that was initial introduced in 2017 in Ryzen 1000 array processors. AMD has given rolled out a Ryzen 2000 and Ryzen 3000 array and all was going flattering uniformly for AMD. Then in new weeks it has come to light that many of a AMD Ryzen 3000 array CPUs are not reaching their advertised boost speeds.
AMD defines a ‘Max Boost Clock’ on a Ryzen 3000 array as being a “the limit single-core magnitude during that a processor is means of handling underneath favoured conditions.” So, to us that means it should be a top boost-clock that we are means to run on one of a cores of a processor. For instance a AMD Ryzen 7 3700X has a boost time of 4.4 GHz, so when regulating single-threaded applications we’d pattern to see one core regulating during 4.4 GHz during some point.
It seems like that isn’t a box as many village members are incompetent to strech a Max Boost Clock on their Ryzen CPU. Overclocker and hardware reviewer Der8auer conducted a consult final month concerning Ryzen 3000’s ability to strech a advertised boost clocks. Thousands of people responded and many reported that they could not strike a advertised Max Boost Clock on their Ryzen 3000 array processor. Der8auer questioned because a boost time is advertised if it can’t be reached on all CPUs and that it was giving people fake expectations.
This positively got a courtesy and we wanted to see if we could strike a advertised boost clocks on any or all of a CPUs.
For contrast we will be regulating a AMD X570 desktop height with 4 AMD Ryzen 3000 array processors; Ryzen 9 3900X, Ryzen 7 3700X, Ryzen 5 3600X, and Ryzen 5 3600. A purify implement of Windows 10 Pro 64-bit v1903 was finished and all updates as of 9/08/2019 were practical to to a handling system. AMD chipset motorist version 19.10.16 was used. The CPU was kept cold by a Corsair Hydro Series H115i PRO glass CPU cooler and a 1TB NVMe SSD was used as a systems primary expostulate and resided on a motherboards 1st built-in M.2 slot.
The Gigabyte X570 AORUS Master motherboard (pricing) for AMD Ryzen processors was regulating BIOS/UEFI chronicle F6 (AGESA 126.96.36.199 ABB). After any AMD Ryzen 3000 array processor was commissioned we commissioned optimized defaults and finished 0 changes. This left a memory regulating during 2133 MHz and that is excellent as we wanted to keep a setup as elementary as possible. PBO was infirm and Ryzen Master was not commissioned on a exam system.
For contrast we followed a same setup that AMD endorsed to der8auer when he did his AMD Ryzen 3000 Boost Clock Survey progressing this month. We downloaded Cinebench R15 and HWiNFO64. We afterwards set HWiNFO64 to run with a 500ms polling rate (default is 2000ms) and ran a sigle-CPU benchmark in Cinebench R15. We did this 3 times and accessible a limit boost time shown on any of a Ryzen 3000 array processors.
Our benchmark formula seem to counterpart what a rest of a village is seeing. Not one of a AMD Ryzen 3000 array processors that we have are means to strike their limit advertised boost clocks on a one exam platform. Our ‘missing’ 25-50 MHz, represents usually over 1% of a advertised altogether time speed. We’d pattern to see one singular core on any given CPU to be means to strike a advertised boost time speed. Are CPU is H2O cooled and we have active cooling floating opposite the 14 Phase Infineon Digital VRM Solution on a Gigabyte X570 AORUS Master motherboard. Our processors were all sent to us directly from AMD when a Ryzen 3000 array launched, so it doesn’t demeanour like a media was given cherry picked samples.
The fact that nothing of a chips are attack AMD’s rated boost speed, on any core, is indeed frustrating and disappointing. Sadly, after doing a possess contrast and looking during a formula from der8auers’ consult with formula from scarcely 3,000 people it is transparent that chances are many 3rd Gen AMD Ryzen processors simply aren’t attack their betrothed boost speed during all. This draft also usually shows a limit time ever reached during a benchmark runs. The time speed fluctuates during a benchmark run and ‘core hunting’ also takes place, as we saw dual cores holding turns regulating this single-threaded benchmark.
The good news is that AMD has released a matter about a boost time descending brief and will be providing an refurbish on a conditions tomorrow.
“AMD is gratified with a clever movement of 3rd Gen AMD Ryzen processors in a PC fan and gaming communities. We closely guard village feedback on a products and know that some 3rd Gen AMD Ryzen users are stating boost time speeds next a approaching processor boost frequency. While processor boost magnitude is contingent on many variables including workload, complement design, and cooling solution, we have closely reviewed a feedback from a business and have identified an emanate in a firmware that reduces boost magnitude in some situations. We are in a routine of scheming a BIOS refurbish for a motherboard partners that addresses that emanate and includes additional boost opening optimizations. We will yield an refurbish on Sep 10 to a village per a accessibility of a BIOS.” – AMD PR on 9/3/2019
We’ll be stating on that tomorrow and we already have a ‘before’ contrast finished and can’t wait to do a ‘after’ testing.
Some of we competence be wondering what all this bitch is about. The AMD Ryzen 7 3700X and Ryzen 9 3900X both got within 25 MHz or 0.025 GHz of their rated speeds. That is flattering dang close, though a village is wanting to be means to strike a advertised limit boost time speeds on a chip they bought. They aren’t looking for tighten adequate as this we are articulate about rise speeds and not a postulated speeds that are confirmed for longer workloads. We’d also disagree that a advertised boost speed should be hit, differently what is a indicate of carrying them.
Lastly, for those that are extraordinary what a Cinebench R15 scores were for a Single Core CPU – we got you. You can see those formula below.
Update 9/13/2019 – AMD belives they have bound a max boost time emanate in AGESA 188.8.131.52 ABBA, that is accessible in a new BIOS build from any motherboard maker. We tested 1003ABBA in an essay that is posted here.