Compare Detail
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X299M EXTREME4ModelB660M-HDV
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7.1 ChannelsAudio channels
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Realtek ALC1220Audio chipset
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Intel X299ChipsetIntel B660
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YesCrossfire supportNo
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NoEcc ram supportNo
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Micro ATXForm factorMicro ATX
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Intel I219-VLan chipset
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2230 / 2242 / 2260 / 2280 / 22110 - M Key
2260 / 2280 - M KeyM2 devices support2260 / 2280 - M Key
2260 / 2280 - M Key
2230 - E Key -
2M2 ports3
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Dual 10/100/1000MbpsMax lan speed
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64 GBMaximum supported ram64GB
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2Onboard usb 202
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1Onboard usb 32 gen 11
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3Pci express x16 slots1
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0Pci express x1 slots2
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NoRaid supportYes
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4Ram slots2
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8Sata 6 gbps ports4
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YesSli supportNo
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LGA2066SocketLGA1700
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2133Mhz
2400Mhz
2666Mhz
2800Mhz
2933Mhz
3200Mhz
3600Mhz
3733Mhz
3800Mhz
3866Mhz
4000Mhz
4133Mhz
4200Mhz
4266MhzSupported memory2133Mhz
2400Mhz
2666Mhz
2933Mhz
3000Mhz
3200Mhz
3466Mhz
3600Mhz
3733Mhz
3800Mhz
4000Mhz
4200Mhz
4266Mhz
4600Mhz -
NoWireless lanNo
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