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ASRock B860 Pro RS Intel Core Ultra DDR5 8666 MHz vs ASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 -

Updated August 2026 — ASRock B860 Pro RS Intel Core Ultra DDR5 8666 MHz wins on performance and networking, ASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 - wins on price and compatibility.

The ASRock B860 Pro RS outperforms the B450M-HDV R4.0 in almost every aspect, making it the better choice for high-performance builds.

Why ASRock B860 Pro RS Intel Core Ultra DDR5 8666 MHz is better

Performance

Supports DDR5 up to 8666 MHz

Expansion

Includes PCIe 5.0 x16 slot

Connectivity

Features WiFi 6E and Thunderbolt 4

Why ASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 - is better

Price

More budget-friendly at $72.47

Compatibility

Supports a wide range of AMD Ryzen processors

Size

Micro ATX form factor is compact

Overall score

ASRock B860 Pro RS Intel Core Ultra DDR5 8666 MHz
90
ASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 -
66

Specifications

SpecASRock B860 Pro RS Intel Core Ultra DDR5 8666 MHzASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 -
Socket TypeLGA 1851AM4
Max RAM256GB DDR564GB DDR4
PCIe Version5.03.0
Audio CodecALC1220ALC887/897
LAN2.5GGigabit

Dimension comparison

ASRock B860 Pro RS Intel Core Ultra DDR5 8666 MHzASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 -

Overview of Motherboards

When it comes to motherboards, the choice significantly influences your computer's performance and compatibility. The ASRock B860 Pro RS is a premium option aimed at high-performance builds, while the B450M-HDV R4.0 caters to budget-conscious users looking for reliability. With the B860 Pro RS priced at $129.99 and the B450M-HDV R4.0 available for $72.47, the difference in investment reflects their intended use cases and specifications.

Performance Capabilities

The ASRock B860 Pro RS offers superior performance with support for Intel Core Ultra processors and DDR5 memory up to 8666 MHz. This makes it ideal for demanding tasks such as gaming and content creation. In contrast, the B450M-HDV R4.0 supports AMD Ryzen processors and DDR4 memory up to 3200 MHz, which is sufficient for typical gaming and everyday tasks but not as robust as its competitor. The performance gap here is significant, with the B860 Pro RS designed for cutting-edge applications.

Compatibility and Socket Type

Compatibility is crucial when selecting a motherboard. The ASRock B860 Pro RS utilizes the LGA 1851 socket, designed for Intel's latest processors, while the B450M-HDV R4.0 features the AM4 socket, compatible with a variety of AMD Ryzen processors from the 2000 to 5000 series. If you are leaning towards Intel's latest technology and want to future-proof your build, the B860 Pro RS is a better fit. On the other hand, if you already own an AMD processor or are looking for a more budget-friendly option, the B450M-HDV R4.0 suffices.

Memory Support

Memory support is a crucial consideration for performance. The B860 Pro RS supports up to 256GB of DDR5 RAM across four DIMM slots, offering a significant advantage for high-end gaming and multitasking scenarios. In contrast, the B450M-HDV R4.0 supports a maximum of 64GB of DDR4 RAM with just two DIMM slots. This difference in memory capacity and type greatly impacts overall system performance, especially in memory-intensive applications where the B860 Pro RS excels.

Expansion Slots and Connectivity

When it comes to expansion capabilities, the B860 Pro RS takes the lead with a PCIe 5.0 x16 slot for next-gen GPUs and multiple M.2 slots for high-speed storage, including a Blazing M.2 PCIe Gen5x4. The B450M-HDV R4.0, however, is equipped with a PCIe 3.0 x16 slot and one Ultra M.2 slot (PCIe Gen3x4 & SATA3). This distinction means that the B860 Pro RS is better suited for users who prioritize high-performance graphics and storage solutions, while the B450M-HDV R4.0 is more limited in this regard.

Audio and Networking Features

Audio and networking capabilities can enhance the overall computing experience. The ASRock B860 Pro RS features Realtek ALC1220 7.1 CH HD Audio Codec with Nahimic Audio, promising immersive sound quality. Additionally, it provides Realtek 2.5G LAN and WiFi 6E for superior connectivity. In contrast, the B450M-HDV R4.0 comes with a 7.1 CH HD Audio codec as well but uses Realtek's ALC887/897, which may not deliver the same audio experience. Its networking is limited to Gigabit LAN. This makes the B860 Pro RS a better choice for audiophiles and gamers seeking a seamless online experience.

Price Comparison

The price difference between these two motherboards is substantial. The ASRock B860 Pro RS retails at $129.99, while the B450M-HDV R4.0 is priced at $72.47. This means the B450M-HDV R4.0 is about 44% cheaper than the B860 Pro RS. However, this lower price reflects its fewer features and capabilities, making it more suitable for entry-level users. If budget constraints are a primary concern, the B450M-HDV R4.0 may be the way to go, but it comes with trade-offs in performance and expandability.

Which should you buy?

Choosing between the ASRock B860 Pro RS and the B450M-HDV R4.0 boils down to your specific needs and budget. If you're looking for a high-performance motherboard that supports the latest technology and offers robust features, the B860 Pro RS is the clear winner. However, if you're on a budget and require a dependable motherboard for basic tasks, the B450M-HDV R4.0 presents an attractive option. Ultimately, your choice should align with your computing requirements and future upgrade plans.