AMD B550 Specifications and Details

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Pretty nice to see 😀 Expand the platform, grow support. It's actually interesting to be in to hardware again for the first time in many, many years. Actually doing analysis on requirements, software support, use cases and such instead of just going "We're going with Intel". So fun, challenging and exciting! Good times!
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With PCIe4 off the table it's kinda hard to imagine why you'd pick up a B550 board over a B450 one, unless the former are very competitively priced. Hilbert hit the distinguishing feature on the head I think, you could potentially get PCIe4-enabled lanes from the CPU still - though I struggle to see how that would keep pricing in check and thus be worth it vs. B450. We'll see I guess, this just feels kinda shrug-worthy to me.
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OK, so the B550 is very close to the X470. Considering the 300/400 series chipsets were made on 55nm, maybe its a die shrink to 40nm or even 28nm ?
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Should be cheap with those specs. Really cheap compared to X570.
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Hmm, well let's see what VRMs will have and how well will overclock. More, let's really see the SSD, NVMe and S ATA performance.
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Pairing it with a r5 3600 would be a killer combo.
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Evildead666:

OK, so the B550 is very close to the X470. Considering the 300/400 series chipsets were made on 55nm, maybe its a die shrink to 40nm or even 28nm ?
55nm, really? What dodgy factory did they came from? Probably costed a few cents each too... I know I/O doesn't scale that well with die nodes, but I'd imagine they'd do it around 22nm on an old fab.
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Silva:

55nm, really? What dodgy factory did they came from? Probably costed a few cents each too... I know I/O doesn't scale that well with die nodes, but I'd imagine they'd do it around 22nm on an old fab.
Its from the AMD Chipset wiki, that references an Anandtech interview with Lisa Su, where they state "Q6: It has been noted that AMD has been working with ASMedia on the chipset side of the platform, using a 55nm PCIe 3.0x4 based chipset. ..." I would expect the next step to be 28nm, should be really cheap by now, and would have a lot of die area benefits over 55nm. Then again, 40nm might be enough.
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ASMedia is surprisingly antiqued company, working on 55nm still, yet trying to be a part of the latest generation of mobos. But then again, mobo manufacturers would like to only pay pennies for the components, no doubt, like Silva said. After all, the B series won't be the high profit margin series, so every cent matters.
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Hmmm, I've been researching X570 boards for the past few days trying to find a good one that doesn't have a bunch of stuff I don't need. These B550 boards sound right up my ally!
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A bit disappointing the chipset runs at PCIe 3.0. I suppose this is still an overall better option than X470, but not much. To me, the whole point of getting the 500 series over older generations is PCIe 4.0.
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ill stick with a x470 and an m2 pci-e expansion card.
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insp1re2600:

ill stick with a x470 and an m2 pci-e expansion card.
i did buy an x570 but i had a b350m so i did upgrade but if i had a x370 or x470 i wouldnt have to be honest, im waiting for blackfriday to see if i can get a ssd 4.0 for a decent price
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Hilbert Hagedoorn:

Many who made the move towards a Ryzen 3000 processor, also treated themselves with an X570 motherboard for PCIe Gen 4.0 and AX WIFI. Other went towards a more affordable X470 motherboard. So one chip... AMD B550 Specifications and Details
" The good news is that with four extra Gen 4 lanes from the CPU, you can still opt to go with an M2 PCIe 4.0 slot. The rest, incl videocards thus is gen 3.0." This is wrong. Ryzen 3000 -CPUs have total of 24 PCIe4 lanes, 16 dedicated for gfx, 4 for m.2 and 4 for chipset. B550 being PCIe3 chipset doesn't change that at all, it still eats that x4 link which just will operate in PCIe 3 mode, the other two, however, will still be PCIe4 (gfx, m2). Unless AMD specificly forbids it, B550 motherboards will support PCIe4 graphics from the CPU, as well as PCIe4 M.2, just like those 3xx and 4xx motherboards could support PCIe4 from CPU if the motherboard wirings would fit the PCIe4 spec until AMD decided it's a no-no. In other words: With B550 motherboards only difference in PCIe compared to X570 should be the chipset connected lanes - it doesn't affect the main M.2 slot nor first PCIe x16 slot which are wired directly to CPU, unless AMD artificially decides to put in some limitations like with 3xx and 4xx.
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schmidtbag:

A bit disappointing the chipset runs at PCIe 3.0. I suppose this is still an overall better option than X470, but not much. To me, the whole point of getting the 500 series over older generations is PCIe 4.0.
As said it is from ASMedia wich doesn't have the contract for producing PCIe 4.0 motherboard (expected in 2020). They also produce the A520 for entry level (expected Q1 2020, B550 maybe Xmas if lucky, unless Q1 2020) source: ASMedia