Product comparison · 2 motherboards

MSI 990XA-GD55 AMD 990X Socket AM3 ATX vs MSI A55-G45 AMD A55 Socket FM1 ATX

42specifications compared
18differ
24identical
18known for one product only

Key differences

Processor socket
- 990XA-GD55 AMD 990X Socket AM3 ATX:Socket AM3
- A55-G45 AMD A55 Socket FM1 ATX:Socket FM1
Supported storage drive interfaces
- 990XA-GD55 AMD 990X Socket AM3 ATX:SATA, SATA II
- A55-G45 AMD A55 Socket FM1 ATX:SATA
RAID levels
- 990XA-GD55 AMD 990X Socket AM3 ATX:0, 1, 5, 10
- A55-G45 AMD A55 Socket FM1 ATX:0, 1, 10
Number of chassis fan connectors
- 990XA-GD55 AMD 990X Socket AM3 ATX:1
- A55-G45 AMD A55 Socket FM1 ATX:2
USB 2.0 ports quantity
- 990XA-GD55 AMD 990X Socket AM3 ATX:8
- A55-G45 AMD A55 Socket FM1 ATX:6
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
- 990XA-GD55 AMD 990X Socket AM3 ATX:2
- A55-G45 AMD A55 Socket FM1 ATX:0
PS/2 ports quantity
- 990XA-GD55 AMD 990X Socket AM3 ATX:1
- A55-G45 AMD A55 Socket FM1 ATX:2
HDMI ports quantity
- 990XA-GD55 AMD 990X Socket AM3 ATX:0
- A55-G45 AMD A55 Socket FM1 ATX:1

Side by side

Differences highlightedShow differences only

Comparison of 990XA-GD55, A55-G45
60 specifications	A MSI 990XA-GD55 AMD 990X Socket AM3 ATX Model 990XA-GD55 View product	B MSI A55-G45 AMD A55 Socket FM1 ATX Model A55-G45 View product
Processor2 differ
Processor manufacturer	AMD	AMD
Processor socketDiffers	Socket AM3	Socket FM1
Compatible processor seriesDiffers	AMD Phenom II X2, AMD Phenom II X3, AMD Phenom II X4, AMD Phenom II X6	AMD A, AMD E2
Memory1 differ
Supported memory types	DDR3-SDRAM	DDR3-SDRAM
Number of memory slots	4	4
Memory channels	Dual-channel	Dual-channel
Supported memory clock speedsDiffers	800,1066,1333,1600,1866,2133 MHz	1066,1333,1600 MHz
Maximum internal memory	32 GB	32 GB
Memory voltageKnown for one	Unknown — not stated by the source	1.5 V
Storage controllers2 differ
Supported storage drive interfacesDiffers	SATA, SATA II	SATA
RAID levelsDiffers	0, 1, 5, 10	0, 1, 10
Internal I/O1 differ
USB 2.0 connectors	2	2
Number of SATA III connectorsKnown for one	6	Unknown — not stated by the source
Number of Parallel ATA connectors	0	0
S/PDIF out connector	Yes	Yes
ATX Power connector (24-pin)	Yes	Yes
Power fan connectorKnown for one	Yes	Unknown — not stated by the source
CPU fan connector	Yes	Yes
Number of chassis fan connectorsDiffers	1	2
Chassis intrusion connector	Yes	Yes
EPS power connector (8-pin)Known for one	Yes	Unknown — not stated by the source
TPM connector	Yes	Yes
Number of SATA II connectorsKnown for one	Unknown — not stated by the source	6
Front panel audio connectorKnown for one	Unknown — not stated by the source	Yes
Number of EATX power connectorsKnown for one	Unknown — not stated by the source	1
Rear panel I/O ports5 differ
USB 2.0 ports quantityDiffers	8	6
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	2	0
Ethernet LAN (RJ-45) ports	1	1
eSATA ports quantity	0	0
PS/2 ports quantityDiffers	1	2
Firewire (IEEE 1394) ports	0	0
VGA (D-Sub) ports quantity	0	0
HDMI ports quantityDiffers	0	1
DVI-D ports quantityDiffers	0	1
Headphone outputs	1	1
S/PDIF out portKnown for one	Yes	Unknown — not stated by the source
Microphone inKnown for one	Unknown — not stated by the source	Yes
Network1 differ
Ethernet interface typeDiffers	Fast Ethernet, Gigabit Ethernet	Gigabit Ethernet
LAN controller	Realtek RTL8111E	Realtek RTL8111E
Networking featuresKnown for one	Gigabit Ethernet	Unknown — not stated by the source
Features2 differ
Component for	PC	PC
Motherboard form factor	ATX	ATX
Motherboard chipset family	AMD	AMD
Motherboard chipsetDiffers	AMD 990X	AMD A55
Audio chipDiffers	Realtek ALC892	Realtek ALC887
Audio output channels	7.1 channels	7.1 channels
Power source type	ATX	ATX
Expansion slots2 differ
PCI Express x1 slotsDiffers	4	3
PCI Express x16 slots	2	2
PCI Express slots versionKnown for one	2.0	Unknown — not stated by the source
PCI slotsDiffers	1	2
BIOSidentical
Clear CMOS buttonKnown for one	Yes	Unknown — not stated by the source
BIOS typeKnown for one	Unknown — not stated by the source	UEFI
Weight & dimensions2 differ
WidthDiffers	305 mm	244 mm
DepthDiffers	244 mm	305 mm
Packaging contentidentical
Drivers includedKnown for one	Yes	Unknown — not stated by the source
Other featuresidentical
Quick installation guideKnown for one	Yes	Unknown — not stated by the source
Controller interface typeKnown for one	Unknown — not stated by the source	SATA 3Gb/s
Graphicsidentical
Parallel processing technology supportKnown for one	Unknown — not stated by the source	Not supported
On-board graphics cardKnown for one	Unknown — not stated by the source	No

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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