ASRock B860 Pro RS
MSI Pro B860-P

ASRock B860 Pro RS MSI Pro B860-P

Overview

Welcome to our in-depth spec comparison between the ASRock B860 Pro RS and the MSI Pro B860-P, two ATX motherboards sharing the same B860 chipset and LGA 1851 socket. While they agree on many fundamentals, key battlegrounds emerge around USB connectivity, RAM speed support, advanced port options, and warranty coverage — all of which could meaningfully influence your next build decision.

Common Features

  • Both motherboards use the LGA 1851 CPU socket.
  • Both motherboards feature the B860 chipset.
  • Both use the ATX form factor.
  • Neither motherboard supports Wi-Fi.
  • Neither motherboard has Bluetooth.
  • Both motherboards include an HDMI 2.1 output.
  • Memory overclocking is supported on both motherboards.
  • RGB lighting is present on both motherboards.
  • Both motherboards support a maximum memory amount of 256GB.
  • Both motherboards have 4 memory slots.
  • Both use DDR5 memory.
  • Both motherboards have 2 memory channels.
  • ECC memory is not supported on either motherboard.
  • Neither motherboard has USB 3.2 Gen 2 ports in USB-C format.
  • Neither motherboard has USB 3.2 Gen 1 ports in USB-C format.
  • Neither motherboard has USB 4 20Gbps ports.
  • Neither motherboard has Thunderbolt 3 ports.
  • Both motherboards have one DisplayPort output.
  • Both motherboards have one RJ45 port.
  • Both motherboards include a USB Type-C port.
  • Both motherboards have 4 USB 2.0 ports available through expansion.
  • Both motherboards include 4 SATA 3 connectors.
  • Both motherboards have 3 M.2 sockets.
  • Both motherboards have a TPM connector.
  • Neither motherboard has U.2 sockets.
  • Neither motherboard has an mSATA connector.
  • Neither motherboard has SATA 2 connectors.
  • Both motherboards have one PCIe 5.0 x16 slot.
  • Both motherboards have one PCIe 4.0 x16 slot.
  • Neither motherboard has PCIe 3.0 x16 slots.
  • Neither motherboard has PCI slots.
  • Neither motherboard has PCIe x4 or x8 slots.
  • Both motherboards support 7.1 audio channels.
  • Neither motherboard has an S/PDIF Out port.
  • Both motherboards have 3 audio connectors.
  • Both motherboards support RAID 0, RAID 1, RAID 5, and RAID 10.
  • RAID 0+1 is not supported on either motherboard.

Main Differences

  • Easy BIOS reset is available on the MSI Pro B860-P but not on the ASRock B860 Pro RS.
  • The warranty period is 3 years on the ASRock B860 Pro RS and 2 years on the MSI Pro B860-P.
  • The height is 254 mm on the ASRock B860 Pro RS and 243.8 mm on the MSI Pro B860-P.
  • The width is 305 mm on the ASRock B860 Pro RS and 304.8 mm on the MSI Pro B860-P.
  • Maximum RAM speed is 5600 MHz on the ASRock B860 Pro RS and 6400 MHz on the MSI Pro B860-P.
  • Maximum overclocked RAM speed is 8666 MHz on the ASRock B860 Pro RS and 8600 MHz on the MSI Pro B860-P.
  • USB 3.2 Gen 2 ports (USB-A) count is 0 on the ASRock B860 Pro RS and 2 on the MSI Pro B860-P.
  • USB 3.2 Gen 1 ports (USB-A) count is 6 on the ASRock B860 Pro RS and 2 on the MSI Pro B860-P.
  • USB 2.0 ports count is 2 on the ASRock B860 Pro RS and 4 on the MSI Pro B860-P.
  • USB 3.2 Gen 2x2 ports count is 1 on the ASRock B860 Pro RS and 0 on the MSI Pro B860-P.
  • USB 4 40Gbps port support is present on the MSI Pro B860-P but not available on the ASRock B860 Pro RS.
  • Thunderbolt 4 port support is present on the MSI Pro B860-P but not available on the ASRock B860 Pro RS.
  • USB 3.2 Gen 1 ports available through expansion is 2 on the ASRock B860 Pro RS and 4 on the MSI Pro B860-P.
  • USB 3.0 ports available through expansion is 2 on the ASRock B860 Pro RS and 4 on the MSI Pro B860-P.
  • Fan headers count is 7 on the ASRock B860 Pro RS and 6 on the MSI Pro B860-P.
  • PCIe x1 slots count is 0 on the ASRock B860 Pro RS and 1 on the MSI Pro B860-P.
Specs Comparison
ASRock B860 Pro RS

ASRock B860 Pro RS

MSI Pro B860-P

MSI Pro B860-P

General info:
CPU socket LGA 1851 LGA 1851
chipset B860 B860
form factor ATX ATX
release date January 2025 January 2025
supports Wi-Fi
Has Bluetooth
HDMI version HDMI 2.1 HDMI 2.1
Easy to overclock
has RGB lighting
Easy to reset BIOS
Has dual BIOS
CPU sockets 1 1
Has integrated graphics
warranty period 3 years 2 years
height 254 mm 243.8 mm
width 305 mm 304.8 mm
Has integrated CPU

At a foundational level, the ASRock B860 Pro RS and MSI Pro B860-P are remarkably similar: both use the LGA 1851 socket with the B860 chipset, adopt a standard ATX form factor, and share the same HDMI 2.1 output, overclocking support, RGB lighting, and dual BIOS implementation. Neither board includes integrated Wi-Fi or Bluetooth, meaning users who need wireless connectivity will need to budget for an add-in card or adapter. These shared fundamentals make both boards broadly competitive for the same platform and use case.

Where the two diverge in meaningful ways is in BIOS accessibility and warranty coverage. The MSI Pro B860-P supports easy BIOS reset, which is a practical advantage for builders who may encounter boot failures or bad overclocking profiles — recovering without needing to locate a jumper or remove the CMOS battery saves real time and frustration. On the other hand, the ASRock B860 Pro RS offers a 3-year warranty versus MSI's 2-year warranty, which is a tangible long-term value benefit, particularly for users who plan to run the board in a semi-permanent build and want extended peace of mind.

Overall, neither board holds a sweeping advantage in this category. However, the edge depends on the buyer's priority: the MSI Pro B860-P wins on day-to-day usability with its easier BIOS reset, while the ASRock B860 Pro RS wins on long-term ownership with an extra year of warranty coverage. For builders who tinker frequently, MSI's approach is more forgiving; for those building a stable, set-and-forget system, ASRock's longer warranty is the more compelling differentiator.

Memory:
maximum memory amount 256GB 256GB
RAM speed (max) 5600 MHz 6400 MHz
overclocked RAM speed 8666 MHz 8600 MHz
memory slots 4 4
DDR memory version 5 5
memory channels 2 2
Supports ECC memory

The ASRock B860 Pro RS and MSI Pro B860-P both support a maximum memory amount of 256GB and have 4 memory slots with dual memory channels. They both also support DDR5 memory. However, they differ in their maximum supported RAM speeds. The ASRock B860 Pro RS supports a maximum RAM speed of 5600 MHz, while the MSI Pro B860-P can support a slightly higher maximum speed of 6400 MHz. For overclocked RAM speeds, the ASRock B860 Pro RS reaches up to 8666 MHz, while the MSI Pro B860-P supports a slightly lower overclocked RAM speed of 8600 MHz.

Neither motherboard supports ECC memory, which means they are both aimed at consumer rather than enterprise-level usage. The number of memory slots, DDR version, and memory channels are identical in both models, so in those aspects, they are equal.

Overall, both motherboards offer similar memory configurations, with the main difference being the RAM speed capabilities, where the MSI Pro B860-P has a higher maximum supported speed compared to the ASRock B860 Pro RS.

Ports:
USB 3.2 Gen 2 ports (USB-A) 0 2
USB 3.2 Gen 1 ports (USB-A) 6 2
USB 3.2 Gen 2 ports (USB-C) 0 0
USB 3.2 Gen 1 ports (USB-C) 0 0
USB 2.0 ports 2 4
USB 3.2 Gen 2x2 ports 1 0
USB 4 40Gbps ports 0 1
USB 4 20Gbps ports 0 0
Thunderbolt 4 ports 0 1
Thunderbolt 3 ports 0 0
has an HDMI output
DisplayPort outputs 1 1
RJ45 ports 1 1
Has USB Type-C
eSATA ports 0 0
DVI outputs 0 0
has a VGA connector
PS/2 ports 0 0

The ASRock B860 Pro RS and MSI Pro B860-P both offer a range of ports, including HDMI and DisplayPort outputs, and a single RJ45 Ethernet port. However, their USB configurations differ. The ASRock B860 Pro RS has 6 USB 3.2 Gen 1 Type-A ports, while the MSI Pro B860-P has only 2. On the other hand, the MSI Pro B860-P includes 2 USB 3.2 Gen 2 Type-A ports, while the ASRock model has none. Both motherboards offer a USB Type-C port, but the ASRock does not support USB 3.2 Gen 2x2 or USB 4 ports, while the MSI Pro B860-P does support one USB 4 40Gbps port and one Thunderbolt 4 port.

For older USB connections, the ASRock B860 Pro RS includes 2 USB 2.0 ports, while the MSI Pro B860-P includes 4. Neither product features eSATA, DVI, or VGA connectors. Both motherboards have a DisplayPort output, but the ASRock B860 Pro RS does not have a USB 3.2 Gen 2x2 or USB 4 port, unlike the MSI Pro B860-P which supports one USB 4 40Gbps port. Additionally, neither model includes Thunderbolt 3 ports.

Overall, the ASRock B860 Pro RS and MSI Pro B860-P share similar video and networking ports, but the MSI Pro B860-P has more diverse USB options, including USB 4 and Thunderbolt 4 support, while the ASRock B860 Pro RS focuses more on the traditional USB 3.2 Gen 1 Type-A ports.

Connectors:
USB 3.2 Gen 1 ports (through expansion) 2 4
USB 2.0 ports (through expansion) 4 4
SATA 3 connectors 4 4
fan headers 7 6
USB 3.0 ports (through expansion) 2 4
M.2 sockets 3 3
Has TPM connector
U.2 sockets 0 0
Has mSATA connector
SATA 2 connectors 0 0

The ASRock B860 Pro RS and MSI Pro B860-P both offer similar connectors, with each featuring 4 SATA 3 connectors, 3 M.2 sockets, and 4 USB 2.0 ports (through expansion). However, there are a few differences between them. The ASRock B860 Pro RS provides 2 USB 3.2 Gen 1 ports (through expansion) and 2 USB 3.0 ports (through expansion), while the MSI Pro B860-P offers 4 USB 3.2 Gen 1 ports (through expansion) and 4 USB 3.0 ports (through expansion), giving it more options for higher-speed USB connections through expansion cards.

In terms of fan headers, the ASRock B860 Pro RS has 7 fan headers, while the MSI Pro B860-P has 6. Both motherboards have a TPM connector, but neither includes U.2 or mSATA connectors. The ASRock B860 Pro RS does not have any SATA 2 connectors, which is the same as the MSI Pro B860-P.

Overall, the ASRock B860 Pro RS provides more fan headers, but the MSI Pro B860-P offers more USB ports through expansion, particularly in the USB 3.2 Gen 1 and USB 3.0 categories, providing more flexibility in expansion card usage.

Expansion slots:
PCIe 4.0 x16 slots 1 1
PCIe 5.0 x16 slots 1 1
PCIe 3.0 x16 slots 0 0
PCIe x1 slots 0 1
PCI slots 0 0
PCIe 2.0 x16 slots 0 0
PCIe x4 slots 0 0
PCIe x8 slots 0 0

The ASRock B860 Pro RS and MSI Pro B860-P both feature one PCIe 4.0 x16 slot and one PCIe 5.0 x16 slot, with no PCIe 3.0 x16, PCIe 2.0 x16, PCIe x4, or PCIe x8 slots. However, the MSI Pro B860-P offers an additional PCIe x1 slot, while the ASRock B860 Pro RS does not include any PCIe x1 slots.

Both motherboards lack PCI slots and do not support PCIe x4 or x8 slots. Therefore, the main difference in expansion slots between the two models is the presence of a PCIe x1 slot on the MSI Pro B860-P, which the ASRock B860 Pro RS lacks.

Overall, the ASRock B860 Pro RS and MSI Pro B860-P are similar in terms of high-speed PCIe x16 slots, with the MSI Pro B860-P offering a bit more flexibility due to the extra PCIe x1 slot.

Audio:
audio channels 7.1 7.1
Has S/PDIF Out port
audio connectors 3 3

The ASRock B860 Pro RS and MSI Pro B860-P both support 7.1 audio channels and include 3 audio connectors. Neither motherboard has an S/PDIF Out port, as both models are lacking this feature. As a result, the audio capabilities are quite similar between the two products, with no significant differences in terms of audio channels, connectors, or the absence of the S/PDIF Out port.

Overall, the audio specifications for both motherboards match exactly, offering the same number of audio channels and connectors, as well as lacking the S/PDIF Out port.

There is no clear distinction in terms of audio performance between the ASRock B860 Pro RS and MSI Pro B860-P based on the provided specifications.

Storage:
Supports RAID 1
Supports RAID 10 (1+0)
Supports RAID 5
Supports RAID 0
Supports RAID 0+1

The ASRock B860 Pro RS and MSI Pro B860-P both support RAID 1, RAID 10 (1+0), and RAID 5, allowing for a range of storage configurations. However, neither motherboard supports RAID 0+1, as both products have this feature disabled.

Since the RAID support features match exactly between the two motherboards, there is no distinction in terms of storage capabilities based on the provided specifications.

In conclusion, both the ASRock B860 Pro RS and MSI Pro B860-P offer identical RAID support, with no support for RAID 0+1 but full support for the other major RAID levels.

Comparison Summary & Verdict

Both the ASRock B860 Pro RS and the MSI Pro B860-P are capable B860 ATX motherboards that share a strong foundation: DDR5 support up to 256GB, triple M.2 sockets, PCIe 5.0, and 7.1 audio. However, their differences reveal distinct target audiences. The ASRock B860 Pro RS stands out with a longer 3-year warranty, more USB 3.2 Gen 1 Type-A ports, a USB 3.2 Gen 2x2 port, and more fan headers — making it a strong pick for builders who value longevity and thermal control. The MSI Pro B860-P, on the other hand, wins on higher maximum RAM speed at 6400 MHz, includes a Thunderbolt 4 and USB 4 40Gbps port, easier BIOS reset, and a more compact form. It suits users who prioritize cutting-edge connectivity and future-proof high-speed peripherals.

ASRock B860 Pro RS
Buy ASRock B860 Pro RS if...

Buy the ASRock B860 Pro RS if you want a longer 3-year warranty, more USB 3.2 Gen 1 Type-A ports, and greater fan header count for better system cooling control.

MSI Pro B860-P
Buy MSI Pro B860-P if...

Buy the MSI Pro B860-P if you need faster maximum RAM speeds, Thunderbolt 4, a USB 4 40Gbps port, and the convenience of easy BIOS reset.