Compare Detail
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PRIME X399-AModelB550M-HDV
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8 ChannelsAudio channels7.1 Channels
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Realtek ALC S1220AAudio chipsetRealtek ALC887
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AMD X399ChipsetAMD B550
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YesCrossfire supportNo
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YesEcc ram supportYes
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EATXForm factorMicro ATX
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Intel i211ATLan chipsetRealtek RTL8111H
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2242 / 2260 / 2280 - M Key
2242 / 2260 / 2280 / 22110 - M KeyM2 devices support2242 / 2260 / 2280 - M Key -
2M2 ports1
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10/100/1000MbpsMax lan speed10/100/1000Mbps
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128 GBMaximum supported ram64 GB
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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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4Pci express x16 slots1
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1Pci express x1 slots1
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1Pci express x4 slots0
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YesRaid supportYes
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8Ram slots2
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August 2017Release dateJune 2020
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6Sata 6 gbps ports4
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YesSli supportNo
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sTR4SocketAM4
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2133Mhz
2400Mhz
2666Mhz
2800Mhz
3000Mhz
3200MhzSupported memory2133Mhz
2400Mhz
2666Mhz
2933Mhz
3200Mhz
3466Mhz
3600Mhz
3733Mhz
3800Mhz
3866Mhz
4000Mhz
4133Mhz
4200Mhz
4266Mhz
4333Mhz
4400Mhz
4533Mhz
4600Mhz -
NoWireless lanNo
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