The release of AMD’s second-Generation Ryzen CPUs in 2018 (with 12nm cores) brought forth the 400-series chipsets. However, despite this, the current B350 chipsets remained a popular midrange choice for quite some time, especially among the more budget-oriented users.
In this article, we’ve compared the B350 vs B450 chipsets to find out if the upgrade makes sense — and which one is better.
B350 vs B450 – General Overview
|AMD B350 Chipset Features||AMD B450 Chipset Features|
|USB 2.0 (6)||USB 2.0 (6)|
|USB 3.1 (2x Gen 1, 2x Gen 2)||USB 3.1 (2x Gen 1, 2x Gen 2)|
|SATA Ⅲ (2)||SATA Ⅲ (2)|
|PCIe (6x 2.0, 1x 3.0)||PCIe (6x 2.0, 1x 3.0)|
|GPU (1x 16)||GPU (1x 16)|
|Overclock (Yes)||Overclock (Yes)|
|Precision Boost Overdrive (No)||Precision Boost Overdrive (Yes)|
|AMD StoreMI (No)||AMD StoreMI (Yes)|
|Flash BIOS (No)||Flash BIOS (Yes)|
|Core Boost (No)||Core Boost (Yes)|
|Extended Heatsink (No)||Extended Heatsink (Yes)|
Although they were released a year apart, the difference between B350 and B450 chipsets is not huge.
For the most part, you’ll find the specs of the B450 matches the B350 — six USB 2.0 ports, two USB 3.1 Gen 1 and Gen 2 each, two SATA III, six PCI-express 2.0, and one PCIe 3.0. You also get the ability to overclock both motherboards.
However, where B450 ups the game is the addition of Precision Boost Overdrive (PBO), AMD StoreMI technology, Flash BIOS button, Core Boost and Extended PWM Heatsink (more on these features below).
So, although they are similar, the extra features make the B450 chipset more suitable for overclocking.
Socket and CPU Compatibility
|Compatible CPUs||AMD B350||AMD B450|
(AMD APUs with Radeon R7 Graphics (A6, A8, A10, A12)
(1st Gen Ryzen CPUs)
(2nd Gen Ryzen CPUs)
(AMD APUs New Generation with Radeon Vega Graphics)
(Ryzen 5000 Processors)
Both B350 and B450 belong to the AM4 socket family of chipsets.
Officially, the AMD B350 supports the older Zen and Zen+ CPUs. However, a simple BIOS update also makes it compatible with Zen 2. As a result, the older B350 supports a wider range of processors than the B450.
But don’t let this fool you. Most of these older CPUs ceased being relevant long ago, even when B450 was released in May 2018, so that’s really not an advantage.
Still, if you’re running your computer on an older Bristol Ridge CPU with AMD APUs with Radeon R7 graphics, I guess you can go for the B350.
Both B350 and B450 support a wide range of graphics, from the 69mm EVGA GeForce GT 730 to the 394mm Palit GeForce RTX 3090, so the GPU shouldn’t be an issue when using these chipsets.
Likewise, unlike the AM4 “X” models, which support both CrossFire and SLI for multi-GPU, the “B” models, including B350, B450 and B550, have no SLI support (check out our B450 vs X470 comparison to learn why SLI isn’t all that useful).
If you’re a fan of overclocking your machine, you’ll be glad to hear that both B350 and B450 support overclocking.
However, B450 just does it better.
One of the reasons for this is the Precision Boost Overdrive (PBO) feature.
PBO combines Precision Boost 2.0 and Extended Frequency Range 2.0 to better scale boost clocks depending on the number of cores that need boosting (Precision Boost 2.0) while at the same time making the chipset less prone to overheating by better controlling the temperature (Extended Frequency Range 2.0).
In addition to this, B450 also includes a 40% greater thermal surface area thanks to the Extended PWM Heatsink. With that much greater surface, there is significantly less chance of overheating, thus allowing you to overclock your CPU more safely and without worrying about stability.
Data Transfer Speeds
You’ll find six USB 2.0 ports in both B350 and B450 motherboards, allowing data transfer speeds of up to 480 Mbps, and two USB 3.1 generation 1 and generation 2, respectively, with 4.8 Gbps speeds in both B350 and B450.
Memory Speed and Compatibility
The B350 Tomahawk supports a maximum RAM of 128GB, with speeds of 1866, 2133, 2400, 2667 (OC), 2933 (OC) and 3200 (OC) MHz DDR4 — it has a dual memory channel and four DIMM slots.
It’s a similar story with the B450 Tomahawk, which also supports a max memory of 128GB and has a dual memory channel and four DIMM slots.
However, while B350 only supports speeds up to 3200 MHz, B450 is compatible with DDR4 memories of 3466, 4000 and 4133 MHz.
Other Performance-Related Specs
Since we’re talking about performance, we should also mention the AMD StoreMI Storage Acceleration Technology that B450 has.
StoreMI Acceleration Technology combines SSD (Solid State Drive) and HDD (Hard Disk Drive), which can greatly improve the speed and performance of your drives and use the maximum storage capacity.
The B350 motherboards don’t include an onboard WiFi card. The B450, on the other hand, uses an integrated Intel 802.11ac WiFi module for 433Mbps Dual Band.
When it comes to the number of ports, there’s no difference between B350 and B450 chipsets.
Namely, both have two SATA III, six USB 2.0, two USB 3.1 Gen 1 and Gen 2 ports each, six PCIe 2.0 lanes and a single PCIe 3.0 slot.
Both MoBos support the latest BIOS version, 7A34v1Q7 (Beta). However, the B450 also includes the Flash BIOS button.
This extra feature allows you to flash your BIOS even without the CPU, GPU, or RAM installed (it works with those as well, don’t worry).
So when would you use this feature? Let’s say you install a new CPU but one which does not support the current BIOS version on your motherboard. A simple Flash BIOS can solve this little problem and allows you to update BIOS to a version your CPU supports.
Having been released in 2017 (B350) and 2018 (B450), the two chipsets are beginning to show signs of age and are being overtaken by newer (and more advanced) models, specifically the B550.
That said, while similar in specs, the fact that the B450 chipset offers some features that are specifically tailored for overclocking still makes this chipset a good budget option.
Also Read: If you’re interested in B550, take a look at this X470 vs B550 comparison we wrote.
Recommended B350 Motherboards
Here are some B350 motherboards that we recommend checking out:
Recommended B450 Motherboards
And we also have some B450 motherboards to recommend:
- MSI B450 Tomahawk MAX – Check Price on Amazon
- Gigabyte B450 AORUS Pro – Check Price on Amazon
- Gigabyte B450 AORUS M – Check Price on Amazon
If you’re looking for a mid-range motherboard without splurging too much money, between B350 vs B450, both chipsets are a good choice.
The B350, in particular, can be a good choice for the budget-conscious, but the additional features like PBO, Extended Heatsink, Flash BIOS and some other features puts the B450 a step ahead of its predecessor and therefore, our recommendation goes to it.