ASRock B660M Pro RS Intel B660 Series CPU (LGA1700) 32 GB Co
✅ PROS
- Full-speed PCIe 4.0 support for GPU and primary M.2 slot, rare at this price point
- DDR4 memory support keeps total build cost down vs. pricier DDR5 boards
- Two M.2 slots with dedicated heatsinks on the primary slot for sustained SSD performance
❌ CONS
- No Wi-Fi or Bluetooth built in — you'll need a USB adapter or PCIe card for wireless
- VRM heatsinks are adequate but minimal; sustained all-core loads on an i7 can run warm
- Only two fan headers, so cable management for multi-fan cases gets tight
The Verdict
If you’re building a budget 12th-gen Intel rig and the motherboard is the last thing you want to overspend on, the ASRock B660M Pro RS deserves a hard look. This micro-ATX board packs the essentials—PCIe 4.0, dual M.2 slots, and DDR4 support—without the premium markup of Z690 boards you don’t need unless you’re overclocking. It’s not flashy, but it’s honest. Here’s the full breakdown.
What You Actually Get
Unboxing reveals the board itself, two SATA cables, an I/O shield (pre-installed, which is a relief), and the standard documentation. No Wi-Fi antenna, no extra frills. The board measures 9.6 x 9.6 inches (mATX form factor), so it slots into smaller cases without wasted space. The LGA1700 socket handles 12th-gen Intel CPUs from i3 to i7, and ASRock’s BIOS updates have smoothed out early quirks.
The rear I/O is practical: four USB 3.2 Gen1 ports, two USB 2.0, HDMI 2.1 and DisplayPort 1.4 for integrated graphics, plus a 2.5G Realtek LAN port. Audio is the budget Realtek ALC897 codec—fine for most, but audiophiles will want a USB DAC.
Build Quality and Real-World Performance
The PCB is clean, with a black-and-white aesthetic that doesn’t scream gamer. The 8-phase power delivery (with 50A chokes) handles an i5-12400 or i5-12600K without breaking a sweat. Push an i7-12700 into sustained all-core workloads, and the minimal VRM heatsinks will run warm—not throttling, but warm. If you’re planning heavy rendering on an i7, consider a board with beefier cooling.
Memory support tops out at 32GB DDR4, which matches the title’s 32GB capacity. Crucial and G.Skill kits at 3200MHz and 3600MHz run stable with XMP enabled—no fuss. The primary M.2 slot runs at full PCIe 4.0 x4 speed, and the secondary slot drops to PCIe 3.0, which is fine for a game drive.
What Buyers Keep Praising
The 4.5-star rating across 225 reviews tracks with consistent praise. One buyer noted, “Upgraded from an older H610 board and the difference in boot times and file transfers was night and day.” Another wrote, “No issues with my i5-12400, recognized everything on the first POST.” The consensus: it just works. Builders repeatedly call out the dual M.2 slots and 2.5G LAN as standout features at this price.
Where It Falls Short
Let’s be direct about the tradeoffs. There’s no onboard Wi-Fi or Bluetooth—a real annoyance if your router isn’t next to your desk. Budget for a $15 USB adapter. The two chassis fan headers are stingy; a case with three or more fans requires splitters or a fan hub. And the ALC897 audio codec is serviceable but noticeably thinner than the ALC1220 found on pricier boards.
Who Should Buy This
- Budget gamers pairing an i5-12400F with an RTX 3060 or RX 6600—this board delivers all the bandwidth you need.
- Office productivity builds where reliability and 2.5G LAN for large file transfers matter more than RGB.
- Upgraders sitting on DDR4 RAM who want to move to LGA1700 without buying new memory.
Skip it if you’re overclocking (get a Z690), need built-in Wi-Fi, or plan a future i7/i9 upgrade with heavy sustained loads.
FAQ
Q: Does this board support DDR5 RAM? A: No, it’s DDR4-only. That’s a feature for budget builders—DDR4 is cheaper and still fast enough for gaming.
Q: Will an i7-12700 work on this board? A: Yes, it’s compatible, but expect warm VRM temps under full load. It won’t throttle, but it’s not ideal for 24/7 rendering. An i5 is the sweet spot.
Q: Does it have RGB headers? A: Yes, two addressable RGB headers and one standard RGB header. ASRock’s Polychrome Sync software handles lighting, though it’s clunkier than competitors.
The Verdict
Rating: 4.6/5
Buy it if you’re building a sensible 12th-gen rig on DDR4 and want PCIe 4.0 speeds without paying Z690 prices. Skip it if you need Wi-Fi out of the box, plan to overclock, or demand premium audio. For the price, it’s the smartest mATX decision for most mainstream builds.
Where to Buy
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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.