Re: [gentoo-user] Need help with recommended budget for hardware

[Michael <confabulate@kintzios.com>]

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On Thursday, 27 February 2025 19:12:38 Greenwich Mean Time Frank Steinmetzger 
wrote:
> Am Thu, Feb 27, 2025 at 11:31:48AM +0000 schrieb Michael:

> > Hmm ... AM4 socket CPUs could drive SATA x2 + PCIe x2 NVME M.2.  I've read
> > that with AM5 CPUs it's all PCIe.  You will have to hook any SATA drives
> > on the PCIe, or perhaps externally via USB.
> 
> Uhm, not quite. It is true that the I/O die inside the AM4 CPUs supports
> 2×SATA, which the I/O die in AM5 does not do anymore. But that doesn’t mean
> that boards don’t provide SATA. In fact, of all 206 AM5 boards listed in my
> product comparison website, exactly one model does not have any SATA ports.
> And that’s because it’s a server board with a non-standard form factor and
> Oculink instead.

I didn't express this clearly.  Yes, they can run SATA via the MoBo chipset 
(e.g. B650/E), but eat up PCIe 4.0 capacity.  I've read about users 
complaining their SATA SSD and SATA HDDs running slower on AM5 than AM4, but I 
don't have an AM5 so can't confirm. 


> > The iGPU on AM5 can drive one dedicated display, while 3 more displays can
> > be hooked up to the USB-C ports as DP-alt mode.
> 
> What do you mean with one dedicated display?

I've read this to mean one HDMI 4K display coming off the graphics core.  
Lower resolutions using DPs (shared?).  I haven't looked into this aspect in 
more detail for more than a year now.  A couple of MoBos I looked at mentioned 
they only supported 3 displays at a time, so I took this to be an AM5 graphics 
limitation.  Later on I read something from AMD speaking of 4 displays.  I 
don't know more about it.


> According to
> https://www.anandtech.com/show/17585/amd-zen-4-ryzen-9-7950x-and-ryzen-5-76
> 00x-review-retaking-the-high-end/3 the AM4 iGPU supports three displays,
> AM5’s four. And it does not matter which connector you use, be it HDMI¹,
> DisplayPort, DVI or even VGA.

I wasn't comparing AM4 to AM5 iGPUs.  Although this video does offer a 
comparison, which I expect won't be relevant to the OP's use case:

https://www.youtube.com/watch?v=WiEmCOQi5rg


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