Section by Gavin Bonshor

X570 Motherboards: PCIe 4.0 For Everybody

One of the biggest additions to AMD's AM4 socket is the introduction of the PCIe 4.0 interface. The new generation of X570 motherboards marks the first consumer motherboard chipset to feature PCIe 4.0 natively, which looks to offer users looking for even faster storage, and potentially better bandwidth for next-generation graphics cards over previous iterations of the current GPU architecture. We know that the Zen 2 processors have implemented the new TSMC 7nm manufacturing process with double the L3 cache compared with Zen 1. This new centrally focused IO chiplet is there regardless of the core count and uses the Infinity Fabric interconnect; the AMD X570 chipset uses four PCIe 4.0 lanes to uplink and downlink to the CPU IO die.

Looking at a direct comparison between AMD's AM4 X series chipsets, the X570 chipset adds PCIe 4.0 lanes over the previous X470 and X370's reliance on PCIe 3.0. A big plus point to the new X570 chipset is more support for USB 3.1 Gen2 with AMD allowing motherboard manufacturers to play with 12 flexible PCIe 4.0 lanes and implement features how they wish. This includes 8 x PCIe 4.0 lanes, with two blocks of PCIe 4.0 x4 to play with which vendors can add SATA, PCIe 4.0 x1 slots, and even support for 3 x PCIe 4.0 NVMe M.2 slots.

AMD X570, X470 and X370 Chipset Comparison
Feature X570 X470 X370
PCIe Interface (to peripherals) 4.0 2.0 2.0
Max PCH PCIe Lanes 24 24 24
USB 3.1 Gen2 8 2 2
Max USB 3.1 (Gen2/Gen1) 8/4 2/6 2/6
DDR4 Support 3200 2933 2667
Max SATA Ports 8 8 8
PCIe GPU Config x16
Memory Channels (Dual) 2/2 2/2 2/2
Integrated 802.11ac WiFi MAC N N N
Chipset TDP 11W 4.8W 6.8W
Overclocking Support Y Y Y
XFR2/PB2 Support Y Y N

One of the biggest changes in the chipset is within its architecture. The X570 chipset is the first Ryzen chipset to be manufactured and designed in-house by AMD, with some helping ASMedia IP blocks, whereas previously with the X470 and X370 chipsets, ASMedia directly developed and produced it using a 55nm process. While going from X370 at 6.8 W TDP at maximum load, X470 was improved upon in terms of power consumption to a lower TDP of 4.8 W. For X570, this has increased massively to an 11 W TDP which causes most vendors to now require small active cooling of the new chip.

Another major change due to the increased power consumption of the X570 chipset when compared to X470 and X370 is the cooling required. All but one of the launched product stack features an actively cooled chipset heatsink which is needed due to the increased power draw when using PCIe 4.0 due to the more complex implementation requirements over PCIe 3.0. While it is expected AMD will work on improving the TDP on future generations when using PCIe 4.0, it's forced manufacturers to implement more premium and more effective ways of keeping componentry on X570 cooler.

This also stretches to the power delivery, as AMD announced that a 16-core desktop Ryzen 3950X processor is set to launch later on in the year, meaning motherboard manufacturers needed to implement the new power deliveries on the new X570 boards with requirements of the high-end chip in mind, with better heatsinks capable of keeping the 105 W TDP processors efficient.

Memory support has also been improved with a seemingly better IMC on the Ryzen 3000 line-up when compared against the Ryzen 2000 and 1000 series of processors. Some motherboard vendors are advertising speeds of up to DDR4-4400 which until X570, was unheard of. X570 also marks a jump up to DDR4-3200 up from DDR4-2933 on X470, and DDR4-2667 on X370. As we investigated in our Ryzen 7 Memory Scaling piece back in 2017, we found out that the Infinity Fabric Interconnect scales well with frequency, and it is something that we will be analyzing once we get the launch of X570 out of the way, and potentially allow motherboard vendors to work on their infant firmware for AMD's new 7nm silicon.

Memory Hierarchy Changes: Double L3, Faster Memory Benchmarking Setup: Windows 1903
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  • Maxiking - Tuesday, July 23, 2019 - link

    LOOOOOOL, so we have a guy confirming AMD doing fraund by misleading people about the frequency, instead of acknowledging the fraund, we gonna talk about semantics.

    Yeah, if you get sentenced for a sexual assault, you should sue then anyone who has accussed you of raping. Just wow.

    Brilliant logic, sir.
  • Maxiking - Tuesday, July 23, 2019 - link

  • Qasar - Tuesday, July 23, 2019 - link

    still valid there buddy.. like has been said, you are the only one throwing the word fraud around, and that amd should be sued over this. so what ever
  • Maxiking - Tuesday, July 23, 2019 - link

    And again... let me copy paste.

    "You are uneducated, TDP doesn't mean power consumption or the highest peak but the amount of heat dissipated, it informs you how much of heat the cooler must be able to dissipate in order to keep the cpu cool enough to run.

    Get it? 1700x TDP was 95W yet there were tasks it managed to consume 120 or even 140w on stock settings. Like do you even watch reviews? It was the same with 2700x.

    but mimimimimimi AMD good mimimimimi Intel bad"
  • Korguz - Tuesday, July 23, 2019 - link

    and yet, you still refuse to admit, that intel has its own issues with fraud and misleading its own customers.

    does he actually say its fraud ?? not directly, seems only YOU keep saying that, and only YOU say amd should be sued for it. again.., i would love to see YOU file a suit against amd for it, considering you are so hung up about it but you wont, cause you are all talk, no action, and probably know.. you wouldnt get very far with that law suit
  • Maxiking - Tuesday, July 23, 2019 - link

    I said a few times... I don't tend to buy amd products so no, I am not gonna sue anybody.

    And as pointed out in the video, in his German one, he works for a retailer selling prebuilt pcs.. People keep returning pcs with AMD cpus becaue they do not boost to the promised frequency. You there, there are something like laws, if you write on the box 4.6ghz, it must reach it.

    You are so knowledgeable, sharp minded and analytical when comes to meaning of words and what people want to say, you should sue Intel on your own, should be easy.
  • Korguz - Tuesday, July 23, 2019 - link

    why not ?? going by how dead set you are about this.. seems like it would be an easy win for you.. ooooohhhh in the german one.. i understand now.. too bad i dont speak german so i cant confirm this... and if some one writes on the box that something uses a certain amount of power.. then it should use it.. not 50 to 100 watts more.. i have a few friends that buy intels cpus.. they see it uses 95 watts of power.. so they get a HSF that can dissipate that much power.. then wonder why their cpu throttles and runs slow when under load... then i point then to the link i just posted,and they are not happy.. and now need to go buy yet another HSF to handle the extra power.

    You are so knowledgeable, sharp minded and analytical when comes to meaning of words and what people want to say, you should sue Amd on your own, should be easy. again, too bad you wont.. cause you are all talk. have a good day sir..
  • Maxiking - Thursday, July 25, 2019 - link

    Again, you have once again showed your AMD fanboyism.

    There is written: TDP 95W. I already explained what TDP means. AMD's TDP isn't accurate either.

    AMD has 4.6ghz on the box whilst a bing number cpus does not REACH IT AT ALL. There is no "*" moniker next the 4.6ghz claim and they do not say that their cpu may not reach the frequency at all. In fact, there is a video from AMD on youtube promised even higher frequency, lol. Up to 4.75 ghz.

    So yeah, stop being desperate and forcing Intel into the debate.

    Because your childish attempts are futile, this is not about AMD or Intel. It is about us consumers. What will be next? 6 Ghz on the box?
  • Maxiking - Thursday, July 25, 2019 - link

    AMD has 4.6ghz on the box whlist a big number of cpus do not REACH IT AT ALL under any load, conditions. Typing on phone is just cancer.
  • Korguz - Thursday, July 25, 2019 - link

    and again, like in another thread, you showed how much you hate amd, and are biased against them, and you call me an amd fanboy, you are just as much an intel fanboy. FYI, IF you actually READ the link i posted, you would see that intels 95 watts, is pretty much a MINIMUM their chips use, in reality, its more like 50 to 100 ABOVE that, and also.. amd is A LOT closer then intel is to the TDP they state, but again.. to be fair, amd AND intel use and come do different values for TDP, but you cant see passed your hated for amd to see this.. you are the one that has to resort to name calling, so WHO is being childish ?? what wil be next, intel claiming their cpus use 100 watts, but in reality, they use 300 ?

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