![]() The more PCIe 5.0 slots they enable, the more expensive boards are going to be. Past that, offering 5.0 to additional slots, bifurcation support, etc is up to motherboard vendors. It’s frankly more confusing than it should be, owing to a lack of hard and definite rules set by AMD but the messaging from AMD is that it shouldn’t be a real issue, and that if you see an Extreme motherboard, it will offer PCIe 5.0 to its graphics slot. Conversely, while AMD has been careful to toe a line about calling 5.0 slots outright mandatory on Extreme motherboards, it’s clear that there’s some kind of licensing or validation program in place where motherboard makers would be driving up their costs for no good reason if they tried to make an Extreme board without 5.0 slots. Non-extreme motherboards will not require this, and while motherboard vendors could technically do it anyhow, it would defeat the purpose of (and higher margins afforded by) the Extreme branding. All B650 (and X670) motherboards must support at least 1 PCIe 5.0 x4 connection for storage Raphael has enough lanes to drive two storage devices at those speeds, but it will be up to motherboard manufacturers if they want to actually run at those speeds (given the difficulty of PCIe 5.0 routing).Įxtreme motherboards, in turn, will also require that PCIe 5.0 is supported to at least one PCIe slot – normally, the x16 PCIe Graphics (PEG) slot. Outside of the technical capabilities of the B650 chipset itself, AMD is also imposing some feature requirements on motherboard makers as part of the overall AM5 platform, and this is where the Extreme designation comes in. AMD has not disclosed a TDP for the chipset, but like B550 before it, it is designed to run with passive cooling. There are no USB root ports limited to 5Gbps here, so all USB 3.x ports, whether coming from the CPU or the chipset, are capable of 10Gbps operation.ĪMD has once again outsourced chipset development for this generation to ASMedia, who also designed the B550 chipset. Finally, the chipset can drive a further 6 USB 2 ports, mostly for on-board peripheral use. The chipset offers a fixed 4 10Gbps Superspeed ports, and then an additional output can be configured as either a single 20Gbps (2x2) port, or two 10Gbps ports. Meanwhile on the USB front, motherboard vendors get more Superspeed USB ports than before. For the B650 this amounts to a net loss of 2 SATA ports, as the most ports it can drive without a discrete storage controller is 4. Notably, the dedicated SATA ports found on the 500 series chipsets are gone, so motherboards will always have to sacrifice PCIe lanes to enable SATA ports. There are also a quartet of PCIe 3.0 lanes which are shared with the SATA ports, allowing for either 4 PCIe lanes, 2 lanes + 2 SATA, or 4 SATA ports. So B650 has a lot more bandwidth coming into it, and available to distribute to peripherals. This and the uplink speed are both notable improvements over the B550 chipset, which was PCIe 3.0 throughout, despite Ryzen 3000/5000 offering PCIe 4.0 connectivity. Meanwhile, uplink to the CPU is a PCIe 4.0 x4 connection.įor PCIe connectivity, B650 offers 8 PCIe 4.0 lanes, which can either have PCIe slots or further integrated peripherals (LAN, Wi-Fi, etc) hung off of them. And as is typical for chipsets these days, several of the I/O lanes coming from the chipset are flexible lanes that can be reallocated between various protocols. AMD AM5 Chipset Comparisonī650, AMD’s mainstream AM5 chipset, can best be thought of as a PCIe 4.0 switch with a bunch of additional I/O baked in. That said, for simplicity’s sake we’re going to start with the B650 chipset, and build up from there. And while not strictly a feature of the chipset, the market segmentation is such that the bulk of high-end AM5 boards – those boards with a massive amount of VRMs and other overclocker/tweaker-friendly features – will be X670 boards. We’ll break down the difference between the two families below, but at a high level, X670 offers more I/O options than B650. B650 boards will, in turn, be coming next month. Since AMD is starting the rollout of their new platform with their high-end CPUs, they are matching this with the rollout of their high-end chipsets.įor this week’s launch, the initial boards available are all from the X670 family. ![]() Kicking things off, we have the B650 and X670 chipsets, as well as their Extreme variations. AM5 Chipsets: X670 and B650, Built by ASMediaįinally, let’s talk about the chipsets that are going to be driving the new AM5 platform.
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