B660 STEEL LEGEND
The ASRock B660 STEEL LEGEND is a ATX LGA1700 motherboard on the B660 chipset. It supports DDR4 memory up to 5,333 MT/s and 3 M.2 slots. Full specs, power delivery, and current prices are below.
Prices update regularly and may differ at the retailer. This page contains affiliate links.
MaxMyBuild scores
How we score →How well the B660 STEEL LEGEND is equipped for gaming and for productivity, scored 0–100 from its specs. Scores are fit-for-purpose: a capable board can top the gaming score without being the most expensive.
Weighs CPU power delivery, memory speed support, the GPU PCIe slot, Wi-Fi version, and M.2 storage — the things that actually matter for a gaming build.
Rewards fast, plentiful M.2 storage and USB I/O, PCIe expansion, memory capacity and slots — what matters for content creation and heavy multitasking.
CPU power
252 W
Limited · 0.8x
Wired for about 252 W, roughly 84% of the 300 W that the top Core i9 chips pull. Pair it with a mid-range processor rather than a flagship. The figure comes from its 7+1+1 power-stage (VRM) layout and 8 EPS connectors. It is a rating of what the board is built to deliver, not a measurement, so treat it as headroom rather than a guarantee.
Specifications
Platform
- Chipset
- B660
- Socket
- LGA1700
- Form factor
- ATX
Memory
- Type
- DDR4
- Slots
- 4
- Max speed
- 5,333 MT/s
- Max capacity
- 128 GB
- Channels
- 2-channel
- ECC / memory
- UDIMM
Power & VRM
- CPU power
- 252 W
- Phase config
- 7+1+1
- VRM stages
- DrMOS
- EPS power
- 8
Storage & Expansion
- M.2 slots
- 3
- M.2 layout
- 2× PCIe 4.0 ×4, 1× PCIe 3.0 ×2
- SATA ports
- 6 SATA3
- PCIe ×16 slots
- 1× PCIe 5.0 ×16, 1× PCIe 4.0 ×2
- Other PCIe slots
- 2× PCIe 3.0 ×1
Ethernet & Wi-Fi
- Realtek RTL8125BG
- 2.5 GbE
- Ethernet ports
- 1
- Wi-Fi
- None
USB & I/O
- Rear USB-A
- 2× USB 2.0, 4× 5 Gbps
- Rear USB-C
- 1× 10 Gbps
- Front USB-C
- 1× 20Gbps
- Front USB 3 headers
- 1
- Front USB 2 headers
- 1
Audio & Video
- Audio codec
- Realtek ALC897
- Audio jacks
- 6
- S/PDIF out
- Yes
- HDMI
- HDMI 2.1
- DisplayPort
- DP 1.4
- USB-C video
- None
Cooling, RGB & Design
- Fan headers
- 7
- 12V RGB headers
- 1
- 5V ARGB headers
- 3
Onboard & Diagnostics
- BIOS Flashback
- Yes (rear)
- TPM header
- Yes
Compare the B660 STEEL LEGEND against every other board on the motherboard comparison table. Not sure it fits your chip? The socket compatibility guide explains LGA1700 pairings.
Where to buy the B660 STEEL LEGEND
Every in-stock retailer offer we track, cheapest first.
| Retailer | Availability | Price | Buy |
|---|---|---|---|
| Newegg | In stock | $154.43 |  |
The B660 STEEL LEGEND starts from $154.43 across 1 retailer (No onboard Wi-Fi). Prices update daily from live stock.
Which CPUs fit the B660 STEEL LEGEND?
Compare all CPUs →In-stock LGA1700 processors this board can run, socket-matched and within its 252 W power budget, ranked by gaming value (performance per dollar).
| Processor | Cores | Gaming | From | |
|---|---|---|---|---|
| Core i3-14100F Intel | 4/8 | 50.0 | $104.99 | |
| Core i3-14100 Intel | 4/8 | 50.0 | $142.80 | |
| Core i5-14400F Intel | 10/16 | 58.0 | $178.99 | |
| Core i3-12100 Intel | 4/8 | 48.0 | $149.00 | |
| Core i5-14600KF Intel | 14/20 | 72.8 | $234.00 | |
| Core i5-12600KF Intel | 10/16 | 60.8 | $199.95 | |
| Core i5-12400F Intel | 6/12 | 53.0 | $179.99 | |
| Core i5-14600K Intel | 14/20 | 72.8 | $249.97 |
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