ASRock's $149.99 B860 Challenger Wifi: Budget ATX Board Runs Core Ultra 270K Plus Fine, Caps USB at 5 Gbps

At $149.99, ASRock's B860 Challenger Wifi runs Intel's Core Ultra 270K Plus at stock speeds without throttling — but every USB port on the board tops out at 5 Gbps, a spec Tom's Hardware reviewer Joe Shields calls "disappointing" for 2026, even in a budget-class mainstream board.

Built on Intel's mainstream B860 chipset and sized as a full ATX board, the Challenger supports Core Ultra and Core Ultra Series 2 processors — Arrow Lake and Arrow Lake refresh — through the LGA 1851 socket. The all-black PCB (a white version also exists) carries eight rear USB ports, three M.2 sockets, four SATA ports, 2.5 GbE via a Realtek RTL8125 controller, Wi-Fi 7 through a Realtek 8922AE adapter, and a basic Realtek ALC897 audio codec. A three-year warranty backs it all.

The headline compromise is USB speed. The single rear Type-C port runs USB 3.2 Gen 1 at 5 Gbps; six more rear ports run the same 5 Gbps; two are USB 2.0 at 480 Mbps. Internal headers mirror that ceiling. Internal storage is stronger: one PCIe 5.0 x4 M.2 socket delivers 128 Gbps, while two PCIe 4.0 x4 sockets add 64 Gbps each. Two full-length PCIe slots sit far apart — a reinforced PCIe 5.0 x16 primary slot wired to the CPU, and a chipset-connected PCIe 4.0 x4 secondary.

How did it perform in testing?

Better than its power delivery suggested it would. Shields admits the result surprised him. "I expected it to throttle on some longer-running multi-threaded benchmarks. But the B860 Challenger proved me wrong," he writes, calling results average to above average across most tests.

The VRM configuration explains the skepticism. The board uses 14 phases total, with 10 dedicated to Vcore through teamed Dr.MOS power stages — specifically 10 Vishay SiC632 stages rated at 50A each, driven by a Richtek RT3638AJ 3-rail, 8-phase PWM controller. That yields roughly 500A of available current, which Shields describes as "not a lot." The VRMs ran hot during a 30-minute stress test, and he recommends a chassis with good airflow, particularly for high-end processors under sustained multi-threaded loads.

Memory support reaches DDR5-8666+ (OC) across four DIMM slots with a 256GB capacity ceiling — a spec Shields notes is plenty fast, "especially given today's ridiculous memory prices."

What else does $149.99 buy?

The board spreads seven 4-pin fan and pump headers across its surface — CPU_FAN1 supports up to 1A/12W, the rest up to 3A/36W each. RGB buyers get three 3-pin ARGB Gen2 headers plus one 4-pin RGB header, controlled through Polychrome Sync, though the board itself ships with no integrated lighting.

Only two of the three M.2 sockets carry heatsinks, and the primary socket uses a quick-release mechanism ASRock brands EZ DIY. The board supports RAID 0/1/5/10 on its four SATA ports but lists no RAID support for M.2 drives. Rear I/O includes an HDMI 2.1 output for integrated graphics and three 3.5mm audio jacks, but no SPDIF optical output — a gap for anyone routing audio to an AV receiver.

For esports players, the yellow rear ports serve as Lightning Gaming USB ports tuned for reduced latency. Shields doubts they matter much beyond that niche.

The in-box bundle is sparse but typical for the class: two SATA cables, an M.2 screw and mount, Wi-Fi antennas, stickers, and a quick installation guide. ASRock includes its OpenClaw AI software, and the board avoids lane and bandwidth sharing between its major interfaces — a genuine plus at this price, since faster boards sometimes steal lanes from M.2 or PCIe slots to feed rear USB.

Two weaknesses remain beyond the USB ceiling: Shields calls the power delivery "paltry" despite the adequate phase count, and says the BIOS is "fully functional but dated compared to the competition."

Who should buy it?

The verdict lands where budget boards usually do. The B860 Challenger Wifi handles gaming, office work, and creative workflows without issue at stock settings, and it never throttled the 270K Plus. It just isn't the fastest or the best at anything — which, at $149.99 on a mainstream chipset, is roughly what buyers should expect. Anyone needing 10 Gbps or faster USB or sustained heavy multi-threaded loads will want to step up a tier.