Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

AMD Ryzen 3000 announced

anandtech.com

Post reply on HN
Print view View original

251–260 of 347 posts

Re: AMD Ryzen 3000 announced

#251

Post by eropple »

shmerl wrote: post #85
eropple wrote: post #74

Earlier quoted context omitted.

I do a bunch of live video stuff (which, for the uninitiated, means "hi, I'm ffmpeg, I want all your processors ") and I learned, the hard way, that I couldn't put a 16C/32T Threadripper in the box--it's a 4U case in a Gator transport case--because 180W would blow out my heat budget. 12C/24T at 105W should be doable. I'm excited; right now I'm constrained because stuff like my CG system is built on Chromium and so it…

Yeah, video encoding will surely benefit from it as well.

Back of the matchbook, I should be able to encode 1080p60 at something like medium presets.

"Medium" is really good.

Re: AMD Ryzen 3000 announced

#252

Post by chupasaurus »

dewyatt wrote: post #239
lettergram wrote: post #28

Finally! I’ve been using a Ryzen 1800x since it’s release. Unfortunately, it has some stability issues and I’ve been waiting to upgrade on the Ryzen 3000, 7nm line. This is going to be a solid 75%+ boost to performance, given I regularly max out my machines threads. Pretty amazing improvement in 2 years.

My desktop w/a Ryzen 1800x still randomly freezes. I disabled most of the power saving features in the UEFI, which definitely reduced the frequency but it still happens on rare occasions. :(

Sounds like a problem with enabled C6 CPU state. Check out the web for a particular setting in your motherboard's BIOS.

Re: AMD Ryzen 3000 announced

#253

Post by avar »

vbezhenar wrote: post #176
gigatexal wrote: post #159

Earlier quoted context omitted.

And on architectures like EPYC you run into NUMA issues and having to pin things to certain cores, right?

make launches separate processes, so NUMA should not be an issue, there's no interprocess communication.

Generally NUMA doesn't matter for "make" workloads so this as all academic, but that being said no, this isn't how modern CPUs work.

When you start two unrelated processes one after the other (such as multiple compile steps) that operate on some of the same in-memory assets (files, things being sent over a pipe etc.) they're not just going to be in the main RAM, but also L1-3 cache, and the RAM itself may be segmented under the hood (even if it's presented to you as one logical address space).

Thus you can benefit from pinning certain groups of tasks to a given CPU/memory space if you know the caches can be re-used without the OS having to transfer the memory to another CPU's purview, or re-populate the relevant caches from RAM.

Re: AMD Ryzen 3000 announced

#254

Post by zanny »

deafcalculus wrote: post #120
MrGilbert wrote: post #107

Earlier quoted context omitted.

You could pick a Ryzen with "G", like the Ryzen 5 2400G, though... They have an integrated GPU.

They are limited to 4 cores. In the new lineup too, when G series comes out later, they'll be limited to 8 cores (one cliplet for CPU and one for GPU).

With this CPu chiplet design they couldn't have 2 8 core packages and a GPU on a single die.

For the vast majority of professional use cases 8 core / 16 thread running at 4.5+ boost is going to be way enough for a while. AMD sure has spoiled the market in just two years on commoditizing 8 core desktop chips because in 2016 the conversation would be about what flavor of $400+ quadcore or $800+ sextacore from Intel you were going to get.

Re: AMD Ryzen 3000 announced

#255

Post by zanny »

No mention of it, but the pressure should still be on AMD to open source or allow firmware disable of their Platform "Security" Processor.

I would really like to be more enthusiastic for my next build to use something like this, but all my computers are presently trustable in a way new platforms with proprietary coprocessors that haven't seen me_cleaner support cannot achieve.

It really sucks to give Intel money - its not like they support the me cleaner project and are actively antagonistic to third parties disabling their backdoors - but at some point it stops being a matter of principle and becomes one of practicality. I can disable the unwanted parts of the hardware on one platform and not on the other.

Re: AMD Ryzen 3000 announced

#256

Post by IanCutress »

XMPPwocky wrote: post #165
loser777 wrote: post #12

Biggest surprise seems to be the 65W 8/16 3700X. Hopefully that means a bit of overclocking headroom.

This might just be a case of TDPs being essentially arbitrary. The 9900K is allegedly a 95W part, but even a moderate all-core OC means you have powers in the 200W and up range. AMD might have just jumped on the same bandwagon.

AMD's TDPs are calculated at all-core turbo. Intel's are only valid for base frequency.

Re: AMD Ryzen 3000 announced

#257

Post by NightlyDev »

carc1n0gen wrote: post #202
redsparrow wrote: post #121

Earlier quoted context omitted.

Unfortunately there were no desktop G parts (APUs) on the Zen+ architecture (as far as I know.) And they're not in the first round of Zen 2 either. The 2400G, which I think is currently the top desktop APU, launched in Feb. 2018 and has four cores.

2xxx series is zen+, also ops complaint was about current gen ryzen, which the 2200G and 2400G fall in to.

2000 series is not zen+ when it comes to APUs. 3000 series is zen+ in APUs.

Re: AMD Ryzen 3000 announced

#258

Post by NightlyDev »

deafcalculus wrote: post #120
MrGilbert wrote: post #107

Earlier quoted context omitted.

You could pick a Ryzen with "G", like the Ryzen 5 2400G, though... They have an integrated GPU.

They are limited to 4 cores. In the new lineup too, when G series comes out later, they'll be limited to 8 cores (one cliplet for CPU and one for GPU).

Not true. 3000 series APUs are based on zen+.

Re: AMD Ryzen 3000 announced

#259

Post by XMPPwocky »

IanCutress wrote: post #256
XMPPwocky wrote: post #165

Earlier quoted context omitted.

This might just be a case of TDPs being essentially arbitrary. The 9900K is allegedly a 95W part, but even a moderate all-core OC means you have powers in the 200W and up range. AMD might have just jumped on the same bandwagon.

AMD's TDPs are calculated at all-core turbo. Intel's are only valid for base frequency.

Ah, so AMD doesn't have cheesy numbers- good to know.

Re: AMD Ryzen 3000 announced

#260

Post by Dylan16807 »

dsr_ wrote: post #197
kyriakos wrote: post #170

Earlier quoted context omitted.

Maybe offer a very cheap add on gpu for office use. Something in the igpu range that would sell for say 50usd. It could be based on one of AMDs older gpus but with support for new display types and ports.

Right now, the cheapest "new" video card sold directly by Newegg is a $35 NVidia 210 which was new in 2010. Interestingly, reviews from that time period suggest that it sold for $30 after rebate. It has HDMI, DVI and VGA ports. In the $50 range you can get an R7 350, which promises 4K support (although I suspect that will be at 30Hz) and would certainly be enough to light a monitor with enough oomph to put shadows an…

> In the $50 range you can get an R7 350, which promises 4K support (although I suspect that will be at 30Hz)

It supports 4k@60. It looks like everything with a GCN core does, so most 7xxx, most 2xx, and all 3xx.

Post reply on HN