Question B450 VS X470

Nov 20, 2019
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What is high speed lanes? And why x570 has 40, x470 has 38, x370 has 38 and B450 28?
And I found this in the overview of B450 chipset and I dont know what it is:
AMD’s B450 Chipset is perfect for power-users who value flexibility and overclocking control, but don’t need the maximum PCIe® bandwidth required by multi-GPU configurations.
The B450 doesn't support x8 dual graphics but I just want one graphic card, so it isn't a problem.
The problem is the overview and the high speed lanes.
What do you recommend?
 
I upgraded from an Asus ROG Strix B450-F to an Asus ROG Strix X470-F not long after I bought a Ryzen 7 3700x to replace my Ryzen 5 2600.
I didn't actually need to upgrade the MB but I had the extra cash on hand so I did.
I can say that the B450-F ran my 3700x very well and I could have easily kept it.
The only real advantages my X470-F has over the B450-F are better VRM for future CPU upgrades (if/when I want) and that I don't lose 2 of my SATA ports when using both of my m.2 SSD's.

PS
I will never run more than 1 GPU so that isn't an issue for me on either board.
 
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What is high speed lanes?
AMD said:
High-Speed Platform Lanes defined as the sum of GPP PCI Express lanes, SATA ports, and USB ports from the chipset and processor that can be used concurrently . High Speed Platform Lanes values as when equipped with a Ryzen processor. Athlon processors feature 2 fewer high-speed platform lanes.
https://www.amd.com/en/products/chipsets-am4
I'm assuming "GPP" means "general purpose" (not sure what the last 'P' stands for).

The high speed lane count isn't something I'd worry about when picking a mobo. Just make sure the one you choose has the slots/connectors you want and you'll be fine.
 
Last edited:
What is high speed lanes? And why x570 has 40, x470 has 38, x370 has 38 and B450 28?
And I found this in the overview of B450 chipset and I dont know what it is:
AMD’s B450 Chipset is perfect for power-users who value flexibility and overclocking control, but don’t need the maximum PCIe® bandwidth required by multi-GPU configurations.
The B450 doesn't support x8 dual graphics but I just want one graphic card, so it isn't a problem.
The problem is the overview and the high speed lanes.
What do you recommend?
The 'high speed lanes' refers to PCIe lanes. The PCIe lanes are used to feed data to/from GPU's and other peripherals attached in the PCIe slots, which includes the NVMe slots used for NVME SSD's.

B450 provides fewer PCIe lanes for peripherals than X470 but more than enough for most systems. The typical system is one GPU, one high speed NVME system drive and one to four high capacity HDD or SSD data drives using SATA.

B450 chipset, together with the PCIe lanes provided by Ryzen CPU's, provide more than sufficient PCIe lanes for that. There's even enough lanes left over to use for a few PCIe sockets for add-in cards and/or a second NVME drive, although at reduced speed. It just depends on how the motherboard mfr. chooses to divide them up in different models.
 
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As long as you have good case airflow the B450 Aorus Pro Wifi should run the 3800x just fine at stock settings.
If you plan to OC it you would need Excellent case airflow and a Good aftermarket CPU cooler to keep the VRMs, PCH and CPU cool.
 
Thats my problem, I maybe change to 3800x but I don't know if is necesary change the AOURUS B450 PRO WIFI to a x470, just look at this and tell me https://docs.google.com/spreadsheet...IVNyMatydkpFA/htmlview?sle=true#gid=639584818
The chipset itself (b450, x470, etc) doesn't necessarily say anything about the VRMs. So you can't just go out an get any X470 and expect it to handle a 3800X better than a B450 would.

So what's your budget, and what country are you in?
 
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