Compare Detail
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Z490 Extreme4
90-MXBC20-A0UAYZModelB450 STEEL LEGEND -
7.1 ChannelsAudio channels7.1 Channels
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Realtek ALC1200Audio chipsetRealtek ALC892
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2 x Antenna Ports
1 x PS/2 Mouse/Keyboard Port
1 x HDMI Port
1 x DisplayPort 1.4
1 x Optical SPDIF Out Port
2 x USB 2.0 Ports (Supports ESD Protection)
1 x USB 3.2 Gen2 Type-A Port (10Gb/s) (ReDriver) (Supports ESD Protection)
1 x USB 3.2 Gen2 Type-C Port (10Gb/s) (ReDriver) (Supports ESD Protection)
2 x USB 3.2 Gen1 Ports (Intel Z490) (Supports ESD Protection)
* Ultra USB Power is supported on USB3_12 ports.
* ACPI wake-up function is not supported on USB3_12 ports.
1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)Back io ports1 x DisplayPort
1 x HDMI
1 x LAN (RJ45)
1 x Optical S/PDIF Out
1 x PS/2 Keyboard/Mouse Combo
1 x USB 3.1 Gen 2 Type-A
1 x USB 3.1 Gen 2 Type-C
2 x USB 2.0/1.1
4 x USB 3.1 Gen 1 Type-A
6 x Audio Jacks -
Intel Z490ChipsetAMD B450
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YesCrossfire supportYes
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NoEcc ram supportNo
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ATXForm factorATX
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Dragon RTL8125BGLan chipsetRealtek RTL8111H
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2260 / 2280 - M Key
2260 / 2280 / 22110 - M Key
2230 - E KeyM2 devices support2230 / 2242 / 2260 / 2280 - M Key
2230 / 2242 / 2260 / 2280 / 22110 - M Key -
3M2 ports2
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10/100/1000/2500MbpsMax lan speed10/100/1000Mbps
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128GBMaximum supported ram128GB
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2Onboard usb 202
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2Onboard usb 32 gen 11
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1Onboard usb 32 gen 20
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2Pci express x16 slots2
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3Pci express x1 slots4
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YesRaid supportYes
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4Ram slots4
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May 2020Release dateMarch 2019
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6Sata 6 gbps ports6
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NoSli supportNo
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LGA1200SocketAM4
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2133Mhz
2400Mhz
2666Mhz
2800Mhz
2933Mhz
3200Mhz
3600Mhz
3733Mhz
3800Mhz
3866Mhz
4000Mhz
4133Mhz
4266MhzSupported memory2133Mhz
2400Mhz
2666Mhz
2933Mhz
3200Mhz
3466Mhz -
NoWireless lanNo
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