Parts Library / Motherboard / ASRock B450 PRO4 ASRock B450 PRO4
Brand ASRock
Model B450 PRO4
UPC 4717677336252 $198–$218 estimated range · from catalog price Oct 19, 2026
2018 mainstream ATX AM4 B450 board with dual M.2, USB 3.1 Gen2, and no Wi‑Fi—good for first builds and affordable overclocking.
Tier Mainstream ?GixCore tier What a part was built to do — not what it costs. Entry Budget Mainstream High end Enthusiast Flagship A part can be cheap because it is an ageing flagship, or because it is a current entry-level model. The tier tells you which.
Released Jul 2018
As an Amazon Associate, GixCore earns from qualifying purchases. Pricing note ?This range is based on our last recorded catalog price and is not a quote. Check Amazon for the current price.
Socket AM4
Chipset B450
Memory DDR4
Max RAM speed 3200 MHz
Form factor ATX
RAM slots 4
M.2 slots 2
PCIe x16 4
↳ Find a match 26 compatible CPUs → ⇄ With nearby tiers Compare → + Test compatibility Check it in your build → C GixCore Editorial
Product overview ASRock’s B450 Pro4 arrived on July 31, 2018, as part of AMD’s B450 (400‑series) platform for 2nd‑Gen Ryzen “Pinnacle Ridge” on socket AM4. Source ASRock ↗
Positioned as a mainstream B‑series ATX board, it exists to deliver affordable overclocking and solid I/O without X‑series pricing. It offers four DDR4 DIMM slots, dual M.2 (one PCIe 3.0 x4), PCIe 3.0 expansion, Gigabit LAN, USB 3.1 Gen2 Type‑A/C, and no onboard Wi‑Fi—well‑suited to first‑time builders and expansion/multi‑M.2 use cases. Notable: the secondary M.2 slot supports 22110‑length SSDs. ASRock does not mark it discontinued as of July 2026. Source PCWorld ↗ Source ASRock ↗
Best for first-time builders expansion/multi-M.2 overclocking high-speed memory Official product specifications ↗ Pairing fit
Compatible CPUs Compatible options ranked for this part's performance class.
Pairing fit
Compatible RAM kits Compatible options ranked for this part's performance class.
Pairing fit
Compatible Cases Compatible options ranked for this part's performance class.
Pairing fit
Compatible Power supplies Compatible options ranked for this part's performance class.
Specifications + Add to compare At a glance iEach dot represents a catalog model. Farther right means a higher measured value, not necessarily a better fit. Measured against the motherboards catalog
Max RAM speed 3200 MHz
TUF Gaming X570-Plus (Wi-Fi) Max RAM speed: 2133 MT/s TB360-BTC D+ Max RAM speed: 2666 MT/s TB360-BTC PRO 2.0 Max RAM speed: 2666 MT/s B450 PRO4 Max RAM speed: 3200 MHz This part Prime Z370-A II Max RAM speed: 4000 MHz B450M PRO-M2 Max Max RAM speed: 4133 MHz Prime X299-A II Max RAM speed: 4266 MHz Prime Z390-A Max RAM speed: 4266 MHz Prime Z390-P Max RAM speed: 4266 MT/s Z390 AORUS Elite Max RAM speed: 4266 MHz Z390 UD Max RAM speed: 4266 MHz Z390 Phantom Gaming 4 Max RAM speed: 4300 MHz B550 Gaming X V2 Max RAM speed: 4400 MHz MPG Z390 Gaming PRO Carbon Max RAM speed: 4400 MHz X299E-ITX/AC Max RAM speed: 4400 MHz Z390 Taichi Max RAM speed: 4400 MHz Prime Z490-P Max RAM speed: 4600 MHz B560 PRO4 Max RAM speed: 4800 MHz MPG Z490 Gaming Edge WiFi Max RAM speed: 4800 MHz MPG Z490 Gaming Plus Max RAM speed: 4800 MHz Z490-A PRO Max RAM speed: 4800 MHz Prime B560-PLUS Max RAM speed: 5000 MHz Z490 AORUS Master Max RAM speed: 5000 MHz ROG Strix B550-F Gaming WiFi II Max RAM speed: 5100 MHz Prime Z590-P Max RAM speed: 5133 MHz B760M Gaming Plus WiFi DDR4 Max RAM speed: 5333 MHz PRO B760-P WiFi DDR4 Max RAM speed: 5333 MHz MPG X670E Carbon WiFi Max RAM speed: 5600 MHz B650MT Max RAM speed: 6000 MHz B650E PG-ITX WiFi Max RAM speed: 6400 MHz B650I AORUS Ultra Max RAM speed: 6400 MHz B650M DS3H Max RAM speed: 6400 MHz PRIME B650M-A AX II Max RAM speed: 6400 MHz PRO B650-P WiFi Max RAM speed: 6400 MHz PRO B650M-A WiFi Max RAM speed: 6400 MHz PRO Z690-A WiFi Max RAM speed: 6400 MHz ROG Maximus Z690 Formula Max RAM speed: 6400 MHz ROG Strix B650-A Gaming WiFi Max RAM speed: 6400 MHz ROG Strix B650E-I Gaming WiFi Max RAM speed: 6400+ MHz MPG B650I Edge WiFi Max RAM speed: 6600 MHz X670E Taichi Carrara Max RAM speed: 6600 MHz TUF Gaming A620M-PLUS WiFi Max RAM speed: 6800 MHz MAG B760 Tomahawk WiFi Max RAM speed: 7000 MHz A620M H Max RAM speed: 7200 MHz B650M Pro RS Max RAM speed: 7200 MHz B760M Pro RS Max RAM speed: 7200 MHz MAG Z790 Tomahawk WiFi Max RAM speed: 7200 MHz Prime Z790-A WiFi 6E Max RAM speed: 7200 MHz TUF GAMING B760-PLUS WIFI Max RAM speed: 7200 MHz TUF Gaming Z790-Plus WiFi Max RAM speed: 7200 MT/s Z790 Taichi Carrara Max RAM speed: 7400 MHz B760 AORUS Elite AX Max RAM speed: 7600 MHz ROG Strix Z790-I Gaming WiFi Max RAM speed: 7600 MHz TUF Gaming B650-PLUS WiFi Max RAM speed: 7600 MT/s TUF Gaming B650E-PLUS WiFi Max RAM speed: 7600 MHz Z790 AORUS Elite AX Max RAM speed: 7600 MT/s Z790 Eagle AX Max RAM speed: 7600 MHz ROG Maximus Z790 Hero Max RAM speed: 7800 MHz B650 AORUS Elite AX V2 Max RAM speed: 8000 MT/s B650M AORUS Elite AX ICE Max RAM speed: 8000 MHz B850 AORUS Elite WIFI7 Max RAM speed: 8000 MHz ROG Crosshair X670E Hero Max RAM speed: 8000 MT/s ROG Strix B850-I Gaming WiFi Max RAM speed: 8000 MHz ROG Strix X870-A Gaming WiFi Max RAM speed: 8000 MHz X670 AORUS Elite AX Max RAM speed: 8000 MHz B850 Eagle WIFI6E Max RAM speed: 8200 MHz X870 AORUS Elite WIFI7 Max RAM speed: 8200 MHz MPG X870E Carbon WiFi Max RAM speed: 8400 MHz Z890 AORUS Elite WIFI7 Max RAM speed: 9200 MHz MEG Z890 Unify-X Max RAM speed: 9600 MHz
2133 MT/s 9600 MHz
Higher than 4% of motherboards RAM slots 4
TB360-BTC D+ RAM slots: 1 A620M H RAM slots: 2 B450M PRO-M2 Max RAM slots: 2 B650E PG-ITX WiFi RAM slots: 2 B650I AORUS Ultra RAM slots: 2 B650MT RAM slots: 2 MEG Z890 Unify-X RAM slots: 2 MPG B650I Edge WiFi RAM slots: 2 ROG Strix B650E-I Gaming WiFi RAM slots: 2 ROG Strix B850-I Gaming WiFi RAM slots: 2 ROG Strix Z790-I Gaming WiFi RAM slots: 2 TB360-BTC PRO 2.0 RAM slots: 2 B450 PRO4 RAM slots: 4 This part B550 Gaming X V2 RAM slots: 4 B560 PRO4 RAM slots: 4 B650 AORUS Elite AX V2 RAM slots: 4 B650M AORUS Elite AX ICE RAM slots: 4 B650M DS3H RAM slots: 4 B650M Pro RS RAM slots: 4 B760 AORUS Elite AX RAM slots: 4 B760M Gaming Plus WiFi DDR4 RAM slots: 4 B760M Pro RS RAM slots: 4 B850 AORUS Elite WIFI7 RAM slots: 4 B850 Eagle WIFI6E RAM slots: 4 MAG B760 Tomahawk WiFi RAM slots: 4 MAG Z790 Tomahawk WiFi RAM slots: 4 MPG X670E Carbon WiFi RAM slots: 4 MPG X870E Carbon WiFi RAM slots: 4 MPG Z390 Gaming PRO Carbon RAM slots: 4 MPG Z490 Gaming Edge WiFi RAM slots: 4 MPG Z490 Gaming Plus RAM slots: 4 Prime B560-PLUS RAM slots: 4 PRIME B650M-A AX II RAM slots: 4 Prime Z370-A II RAM slots: 4 Prime Z390-A RAM slots: 4 Prime Z390-P RAM slots: 4 Prime Z490-P RAM slots: 4 Prime Z590-P RAM slots: 4 Prime Z790-A WiFi 6E RAM slots: 4 PRO B650-P WiFi RAM slots: 4 PRO B650M-A WiFi RAM slots: 4 PRO B760-P WiFi DDR4 RAM slots: 4 PRO Z690-A WiFi RAM slots: 4 ROG Crosshair X670E Hero RAM slots: 4 ROG Maximus Z690 Formula RAM slots: 4 ROG Maximus Z790 Hero RAM slots: 4 ROG Strix B550-F Gaming WiFi II RAM slots: 4 ROG Strix B650-A Gaming WiFi RAM slots: 4 ROG Strix X870-A Gaming WiFi RAM slots: 4 TUF Gaming A620M-PLUS WiFi RAM slots: 4 TUF Gaming B650-PLUS WiFi RAM slots: 4 TUF Gaming B650E-PLUS WiFi RAM slots: 4 TUF GAMING B760-PLUS WIFI RAM slots: 4 TUF Gaming X570-Plus (Wi-Fi) RAM slots: 4 TUF Gaming Z790-Plus WiFi RAM slots: 4 X299E-ITX/AC RAM slots: 4 X670 AORUS Elite AX RAM slots: 4 X670E Taichi Carrara RAM slots: 4 X870 AORUS Elite WIFI7 RAM slots: 4 Z390 AORUS Elite RAM slots: 4 Z390 Phantom Gaming 4 RAM slots: 4 Z390 Taichi RAM slots: 4 Z390 UD RAM slots: 4 Z490 AORUS Master RAM slots: 4 Z490-A PRO RAM slots: 4 Z790 AORUS Elite AX RAM slots: 4 Z790 Eagle AX RAM slots: 4 Z790 Taichi Carrara RAM slots: 4 Z890 AORUS Elite WIFI7 RAM slots: 4 Prime X299-A II RAM slots: 8
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Higher than 97% of motherboards M.2 slots 2
A620M H M.2 slots: 1 B450M PRO-M2 Max M.2 slots: 1 B650MT M.2 slots: 1 Prime Z390-P M.2 slots: 1 TB360-BTC D+ M.2 slots: 1 TB360-BTC PRO 2.0 M.2 slots: 1 Z390 UD M.2 slots: 1 B450 PRO4 M.2 slots: 2 This part B550 Gaming X V2 M.2 slots: 2 B560 PRO4 M.2 slots: 2 B650E PG-ITX WiFi M.2 slots: 2 B650I AORUS Ultra M.2 slots: 2 B650M AORUS Elite AX ICE M.2 slots: 2 B650M DS3H M.2 slots: 2 B760M Gaming Plus WiFi DDR4 M.2 slots: 2 MPG B650I Edge WiFi M.2 slots: 2 MPG Z390 Gaming PRO Carbon M.2 slots: 2 MPG Z490 Gaming Edge WiFi M.2 slots: 2 MPG Z490 Gaming Plus M.2 slots: 2 Prime B560-PLUS M.2 slots: 2 PRIME B650M-A AX II M.2 slots: 2 Prime Z370-A II M.2 slots: 2 Prime Z390-A M.2 slots: 2 Prime Z490-P M.2 slots: 2 PRO B650-P WiFi M.2 slots: 2 PRO B650M-A WiFi M.2 slots: 2 PRO B760-P WiFi DDR4 M.2 slots: 2 ROG Strix B550-F Gaming WiFi II M.2 slots: 2 ROG Strix B650E-I Gaming WiFi M.2 slots: 2 ROG Strix B850-I Gaming WiFi M.2 slots: 2 ROG Strix Z790-I Gaming WiFi M.2 slots: 2 TUF Gaming A620M-PLUS WiFi M.2 slots: 2 TUF Gaming X570-Plus (Wi-Fi) M.2 slots: 2 Z390 AORUS Elite M.2 slots: 2 Z390 Phantom Gaming 4 M.2 slots: 2 Z490-A PRO M.2 slots: 2 B650 AORUS Elite AX V2 M.2 slots: 3 B650M Pro RS M.2 slots: 3 B760 AORUS Elite AX M.2 slots: 3 B760M Pro RS M.2 slots: 3 B850 AORUS Elite WIFI7 M.2 slots: 3 B850 Eagle WIFI6E M.2 slots: 3 MAG B760 Tomahawk WiFi M.2 slots: 3 Prime X299-A II M.2 slots: 3 Prime Z590-P M.2 slots: 3 ROG Maximus Z690 Formula M.2 slots: 3 ROG Strix B650-A Gaming WiFi M.2 slots: 3 TUF Gaming B650-PLUS WiFi M.2 slots: 3 TUF Gaming B650E-PLUS WiFi M.2 slots: 3 TUF GAMING B760-PLUS WIFI M.2 slots: 3 X299E-ITX/AC M.2 slots: 3 X670E Taichi Carrara M.2 slots: 3 Z390 Taichi M.2 slots: 3 Z490 AORUS Master M.2 slots: 3 Z790 Eagle AX M.2 slots: 3 MAG Z790 Tomahawk WiFi M.2 slots: 4 MPG X670E Carbon WiFi M.2 slots: 4 MPG X870E Carbon WiFi M.2 slots: 4 Prime Z790-A WiFi 6E M.2 slots: 4 PRO Z690-A WiFi M.2 slots: 4 ROG Strix X870-A Gaming WiFi M.2 slots: 4 TUF Gaming Z790-Plus WiFi M.2 slots: 4 X670 AORUS Elite AX M.2 slots: 4 X870 AORUS Elite WIFI7 M.2 slots: 4 Z790 AORUS Elite AX M.2 slots: 4 Z890 AORUS Elite WIFI7 M.2 slots: 4 ROG Crosshair X670E Hero M.2 slots: 5 ROG Maximus Z790 Hero M.2 slots: 5 Z790 Taichi Carrara M.2 slots: 5 MEG Z890 Unify-X M.2 slots: 6
1 6
Higher than 50% of motherboards
Socket AM4
Memory DDR4
WiFi No
Integrated Graphics Yes
USB 3.1
Max Memory Size 64 GB
ECC Support Yes
Chipset B450
Max RAM speed 3200 MHz
Form factor ATX
RAM slots 4
M.2 slots 2
PCIe x16 4
Processor Generation 1000, 2000, 3000, 4000, 5000
Pci E 3.0
M.2 drives PCIe
Sata Slots 4
Sata Speed 6 Gb/s
Pci E Slots 4
Tdp 50 W
NVMe support Yes
Pci E X1 4
Cpu Brand AMD 
