# MSI MAG B660M Mortar DDR4 Motherboard, Micro-ATX - Supports Intel 12th Gen Core Processors, LGA 1700 - DDR4 Memory Boost 4800+MHz/OC, PCIe 4.0 & 3.0 x16 Slots, 2 x M.2 Gen4 Slots, 2.5G LAN

- Category: Motherboard
- Brand: MSI
- Model: MAGB660MMORTARDDR4
- Part number: 7D42-001R
- Price (US): currently unavailable
- Price last checked: 2026-08-06
- Rating: 4.4/5 from 80 Amazon reviews
- Warranty: 3 years
- Product page: https://buildmypc.net/component-details/motherboard/msi-magb660mmortarddr4-7d42-001r/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | MSI |
| Model | MAGB660MMORTARDDR4 |
| Socket Type | LGA 1700 |
| Chipset | Intel B660 |
| Form Factor | Micro ATX |
| Memory Type | 4 x DDR4 |
| Max Memory Support | 128 GB |

## Key Features

- 12TH GEN CORE, HIGH PERFORMANCE - The MAG B660M MORTAR DDR4 (mATX) employs a 12 Duet Rail Power System (60A, DrMOS) VRM for the Intel B660 chipset (LGA 1700, 12th Gen Core ready) with Core Boost architecture for high CPU core count power demands
- INTEGRATED COOLING - VRM cooling features 7W/mK MOSFET thermal pads and an extended heatsink; Includes chipset heatsink, M.2 Shield Frozr, a dedicated pump-fan cooling header & 6-layer PCB with 2 oz. thickened copper
- DDR4 MEMORY, PCIe 4.0 & 3.0 x16 SLOTS - 4 x DDR4 DIMM slots with Memory Boost isolated circuitry for overclocking (1DPC 1R, 4800+ MHz); A PCIe 4.0 x16 Steel Armor slot supports graphics cards (secondary PCIe 3.0 x16 slot, AMD CrossFire supported)
- DUAL M.2 CONNECTORS - Storage includes 2 x M.2 Gen4 x4 64Gb/s slots (Intel Optane supported) with Shield Frozr to prevent thermal throttling during hyper-fast SSD access
- 2.5G CONNECTIVITY - Network hardware includes a 2.5Gbps LAN controller; Rear ports include USB 3.2 Gen 2x2 Type-C (20Gbps), HDMI 2.1 & DisplayPort 1.4, and 7.1 HD Audio with Audio Boost (supports S/PDIF output)

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