Ryzen 3 x470 vs x570

[phillyman36]

Question in general for these ipc gains on Ryzen 3 does it matter whether you use a x470 vs x570? Are the ipc gains strictly due to the cpu or does the new chipset add to the ipc gains as well? Would there be a slight decrease in gains by using an older x470?

 

[jackstar7]

I could be wrong, but I think if you can get RAM that performs on an X470, then the Ryzen 3xxx will given you what you need.

One of the platform gains with X570 is improved RAM support.

 

[Campy]

Chipset won't affect the CPU performance directly. The only difference would be through better RAM support as mentioned above, but most of the memory problems with Ryzen 1000 and 2000 are due to the memory controller, not any characteristic of the motherboard. From what I gather there shouldn't be any trouble running 3600+MHz memory with Ryzen 3000, and I don't see why that wouldn't be the case on X470. The memory controller is supposedly much much better in the upcoming Ryzen CPUs. If you want 4000MHz memory or above then X570 motherboard is probably necessary, but if you're gaming you might want to stay under 3733MHz anyway due to IF frequency/memory latency.

I suggest you read some reviews after launch for more concrete information/recommendations on memory support.

 

[DrMrLordX]

most of the memory problems with Ryzen 1000 and 2000 are due to the memory controller, not any characteristic of the motherboard.

While that's generally true, it can also be affected by DIMM slot layout. T-topology is better for using 4 DIMMs while daisy chain gets you better speeds out of 2 DIMMs.

Here's the real kicker:

Do any X470 or B450 boards support PBO on non-x chips? Like the R7 2700? I haven't yet found one that does.

 

[VirtualLarry]

Is CPB (Core Performance Boost) different than PBO (Power Boost Overdrive)?

My Asus B450-F Strix board, has CPB for my Ryzen R7 2700 CPU installed.

Edit: In response to the OP: I don't believe that a chipset can change a CPU's IPC noticeably, but it could change performance slightly, especially if it allows adjusting the CPU's clock speed or multiplier, when a different chipset on the same platform might not.

 

[DrMrLordX]

Is CPB (Core Performance Boost) different than PBO (Power Boost Overdrive)?

No. It's Precision Boost and XFR. Not Precision Boost Overdrive.

 

[VirtualLarry]

No. It's Precision Boost and XFR. Not Precision Boost Overdrive.

Bzzt. Sorry, wrong. Google it, it was the first link:

https://community.amd.com/community...precision-boost-overdrive-in-three-easy-steps

Edit: Reading the blog post / article, 2nd-Gen AMD Ryzen CPUs have both Precision Boost 2, and Precision Boost Overdrive.

Edit: They've got some graphics showing the difference. Somewhere in there is XFR / XFR 2, I suppose, too.

 

[DrMrLordX]

Bzzt. Sorry, wrong. Google it, it was the first link:

I don't think you understand what I was saying. Disabling CPB means you turn off PB/PB2 and XFR/XFR2. It has nothing to do with PBO, which is controlled by a separate setting.

I guess I should have said "yes" rather than "no". In that yes, CPB is in fact different from PBO.

 

[VirtualLarry]

Sorry if I mis-understood what you were saying.

 

[DrMrLordX]

'salright. No harm done.

 

[VirtualLarry]

Yeah, upon re-reading this little part of the convo, I guess you were really just answering my question. Sometimes, I forget the context of previous posts. My memory hasn't been so good lately. Hope I'm not getting Alzheimers or something like that. (Only in mid-40s, but my memory's been tanking hard lately.)

 

[jackstar7]

Yeah, upon re-reading this little part of the convo, I guess you were really just answering my question. Sometimes, I forget the context of previous posts. My memory hasn't been so good lately. Hope I'm not getting Alzheimers or something like that. (Only in mid-40s, but my memory's been tanking hard lately.)

Might need to adjust your memory timings. Sounds like you've been OC'ing out of spec for too long.

 

[Shmee]

Larry needs to run memtest on his brain.

 

[DrMrLordX]

Yeah, upon re-reading this little part of the convo, I guess you were really just answering my question. Sometimes, I forget the context of previous posts. My memory hasn't been so good lately. Hope I'm not getting Alzheimers or something like that. (Only in mid-40s, but my memory's been tanking hard lately.)

Might need to see a doc about that. Or stop letting people use your brain as a USB flash stick.