Should I exchange my 3700x?

[twantony]

So my cinebench scores around 4650 stock on Cb20 and I did some more testing and 2 of my cores don't go above 4.3ghz and only 1 hit the advertisement speed once while the others only go to 4.350ghz.  now should I exchange my 3700x for a chance to get a better one or does this look normal as far as a 3700x goes?  Please help.  Also I have b450 tomahawk max, wraith prism, latest bios 

[Morgan MLGman]

I think the chip is alright. What motherboard do you have? What cooler do you use? Those are important questions when you're discussing how Ryzen 3000 chips boost their clocks.

 

Use Ryzen Master to monitor clock speeds, not HWinfo. I've had some issues getting the best scores/clock speeds in both singlethreaded and multithreaded tests and so far the best option/balance for me was using the PBO/+200MHz offset settings which increased my PPT limit from stock 88W, among other things.

That allowed me to get just short of 5k points in multithreaded and just over 500 in singlethreaded CB20 tests. I'm using an X370 board though, so your chip may clock itself higher if you're on a good X570 one

I have not tried manual overclocking on my 3700X though, beyond what PBO and the 200MHz max boost offset increase give.

Edit: Also, what is your Windows power plan?

[Jurrunio]

Ryzen 3rd gen advertises max boost, so it's totally normal to be 100-200MHz behind the advertised clocks

[twantony]

I am using b450 tomahawk max with latest bios everything default.  I get  same readings on ryzen master. I use ryzen balanced power plan. those 2 cores are slow duds it looks like

[twantony]

Just now, Jurrunio said:

Ryzen 3rd gen advertises max boost, so it's totally normal to be 100-200MHz behind the advertised clocks

I see.  thank you

[Mira Yurizaki]

The advertised boost clock speeds are the maximum speed for a single or dual core workload. There's also a quirk with AMD CPUs in that the cores may not all have the same boost potential. Some cores may easily hit the advertised speeds, others may not. See: https://www.tomshardware.com/news/amd-ryzen-3000-boost-frequency-bios-fix,40308.html

[twantony]

7 minutes ago, Mira Yurizaki said:

The advertised boost clock speeds are the maximum speed for a single or dual core workload. There's also a quirk with AMD CPUs in that the cores may not all have the same boost potential. Some cores may easily hit the advertised speeds, others may not. See: https://www.tomshardware.com/news/amd-ryzen-3000-boost-frequency-bios-fix,40308.html

thank you.  I have the latest 1.0.0.4 bios though so is this still normal behavior?

[Mira Yurizaki]

4 hours ago, twantony said:

thank you.  I have the latest 1.0.0.4 bios though so is this still normal behavior?

According to the article, which they spoke with AMD about, yes:

Quote

Our own investigation of AMD's new boost clock behavior also found that only one core on any given Ryzen 3000 CPU can hit the rated boost clock, which AMD confirmed. That means the Ryzen 3000-series processors contain a mix of faster and slower cores, which is a departure from how AMD and its competitors have traditionally spec'd processors.