The AMD 3rd Gen Ryzen Deep Dive Review: 3700X and 3900X Raising The Bar
by Andrei Frumusanu & Gavin Bonshor on July 7, 2019 9:00 AM ESTSection 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 x8/x8 x8/x8/x8* |
x16 x8/x8 x8/x8/x4 |
x16 x8/x8 x8/x8/x4 |
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.
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catavalon21 - Sunday, July 7, 2019 - link
The 2600K had legs as good as any modern CPU, but I don't agree that "most" people are still using a CPU 6 to 8 years old.yeeeeman - Monday, July 8, 2019 - link
Most people are still on Sandy bridge, ivy bridge or haswell. All of these are nothing compared to what 3900x offers and also 3700x. That is the main idea here. There is no point in buying 9900k just to pay a lot more for 5% fps increase at 1080p. That is nitpicking at its best. You are much better off with a 3900x. You get 2950x mt performance, you get more than enough gaming performance and you get lower power consumption than 9900k.Namisecond - Sunday, July 7, 2019 - link
Intel had better marketing, better suppliers, better chipsets, better networking, etc. AMD having a better CPU just doesn't seem to be enough.just4U - Sunday, July 7, 2019 - link
Better chipsets? Amd just released the x570 what does the 390 chipset offer that the x570 does not?Meteor2 - Sunday, July 14, 2019 - link
"He stated in article it took amd 15 YEARS to get this good CPU finally out and sounded like he was impressed by that?" No. That's why it was awarded a Silver.Korguz - Sunday, July 7, 2019 - link
not according to Maxiking, catavalon21... starting to sound like Maxiking, is another HStewart .....shabby - Wednesday, July 10, 2019 - link
Where is Hstewart anyway? LolOliseo - Sunday, July 7, 2019 - link
"But not when the raw performance is tconsidered. It is a hypothetical scenario"How can you take someone seriously when they say this on an article that provides the evidence they claim is "hypothetical".
You simply can't. Either they think you're stupid, or they don't know they are.
It's one or the other. What do you reckon it is.
Andrei Frumusanu - Sunday, July 7, 2019 - link
Please don't take our current numbers as any sign of overclockability - we didn't have enough time for it and motherboard firmwares are still getting updated.Maxiking - Sunday, July 7, 2019 - link
Your numbers on par with the rest of the world, so you maxed out those chips.