ASRock > Motherboard Compare Result

Model	990FX Extreme4	990FX Extreme3

Form Factor	- ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm - Premium Gold Capacitor design (100% Japan made high quality conductive polymer capacitors)	- ATX Form Factor: 12.0-in x 8.6-in, 30.5 cm x 21.8 cm - All Solid Capacitor design (100% Japan made high quality conductive polymer capacitors)
Unique Feature	- ASRock Extreme Tuning Utility (AXTU) - ASRock Instant Boot - ASRock Instant Flash - ASRock APP Charger - ASRock XFast USB - ASRock XFast LAN - ASRock XFast RAM - ASRock On / Off Play Technology - Hybrid Booster: - CPU Frequency Stepless Control< / font> - ASRock U-COP< / font> - Boot Failure Guard (B.F.G.)< / font> - Turbo 50 / Turbo 60 CPU Overclocking - Turbo UCC	- ASRock Extreme Tuning Utility (AXTU) - ASRock Instant Boot - ASRock Instant Flash - ASRock APP Charger - ASRock APP Shop - ASRock XFast USB - ASRock XFast LAN - ASRock XFast RAM - ASRock On / Off Play Technology - Hybrid Booster: - CPU Frequency Stepless Control< / font> - ASRock U-COP< / font> - Boot Failure Guard (B.F.G.)< / font> - Turbo 50 / Turbo 60 CPU Overclocking - Turbo UCC
CPU	- Support for Socket AM3+ processors - Support for Socket AM3 processors: AMD Phenom™ II X6 / X4 / X3 / X2 (except 920 / 940) / Athlon II X4 / X3 / X2 / Sempron processors - Supports 8-Core CPU - Supports UCC feature (Unlock CPU Core) - Digi Power Design - Advanced V8 + 2 Power Phase Design - Supports CPU up to 140W - Supports AMD's Cool 'n' Quiet Technology - FSB 2600 MHz (5.2 GT / s) - Supports Untied Overclocking Technology - Supports Hyper-Transport 3.0 (HT 3.0) Technology	- Support for Socket AM3+ processors - Support for Socket AM3 processors: AMD Phenom™ II X6 / X4 / X3 / X2 (except 920 / 940) / Athlon II X4 / X3 / X2 / Sempron processors - Supports 8-Core CPU - Supports UCC feature (Unlock CPU Core) - Digi Power Design - 4 + 1 Power Phase Design - Supports CPU up to 140W - Supports AMD's Cool 'n' Quiet Technology - FSB 2600 MHz (5.2 GT / s) - Supports Untied Overclocking Technology - Supports Hyper-Transport 3.0 (HT 3.0) Technology
Chipset	- Northbridge: AMD 990FX - Southbridge: AMD SB950	- Northbridge: AMD 990FX - Southbridge: AMD SB950
Memory	- Dual Channel DDR3 memory technology - 4 x DDR3 DIMM slots - Supports DDR3 2100(OC) / 1866* / 1800* / 1600* / 1333 / 1066 / 800 non-ECC, un-buffered memory - Max. capacity of system memory: 64GB** 1866 / 1800 / 1600MHz memory speed is supported depend on the AM3 / AM3+ CPU you adopt. For detail CPU specification, please refer AMD official website< / a>. To reach the maximum 64GB of system memory, memory modules with 16GB capacity or above are required. ASRock will update the memory support list on the official website once these memory modules are available on the market. **Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.	- Dual Channel DDR3 memory technology - 4 x DDR3 DIMM slots - Supports DDR3 2100(OC) / 1866* / 1800* / 1600* / 1333 / 1066 / 800 non-ECC, un-buffered memory - Max. capacity of system memory: 64GB** 1866 / 1800 / 1600MHz memory speed is supported depend on the AM3 / AM3+ CPU you adopt. For detail CPU specification, please refer AMD official website< / a>. To reach the maximum 64GB of system memory, memory modules with 16GB capacity or above are required. ASRock will update the memory support list on the official website once these memory modules are available on the market. **Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.
Slots	- 3 x PCI Express 2.0 x16 slots (PCIE2 / PCIE4 @ x16 mode; PCIE5 @ x4 mode) - 2 x PCI Express 2.0 x1 slots - 2 x PCI slots - Supports AMD Quad CrossFireX™, 3-Way CrossFireX™ and CrossFireX™ - Supports NVIDIA Quad SLI™ and SLI™	- 3 x PCI Express 2.0 x16 slots (PCIE2 / PCIE3 @ x16 mode; PCIE4 @ x4 mode) - 1 x PCI Express 2.0 x1 slot - 2 x PCI slots - Supports AMD Quad CrossFireX™, 3-Way CrossFireX™ and CrossFireX™ - Supports NVIDIA Quad SLI™ and SLI™
Graphics	- n / a	- n / a
Audio	- 7.1 CH HD Audio with Content Protection (Realtek ALC892 Audio Codec) - Premium Blu-ray audio support	- 7.1 CH HD Audio with Content Protection (Realtek ALC892 Audio Codec) - Premium Blu-ray audio support
Lan	- PCIE x1 Gigabit LAN 10 / 100 / 1000 Mb / s - Broadcom BCM57781 - Supports Wake-On-LAN - Supports Energy Efficient Ethernet 802.3az - Supports PXE	- PCIE x1 Gigabit LAN 10 / 100 / 1000 Mb / s - Broadcom BCM57781 - Supports Wake-On-LAN - Supports Energy Efficient Ethernet 802.3az - Supports PXE
WiFi	- n/a	- n/a
Rear Panel I/O	I / O Panel - 1 x PS / 2 Mouse Port - 1 x PS / 2 Keyboard Port - 1 x Coaxial SPDIF Out Port - 1 x Optical SPDIF Out Port - 6 x USB 2.0 Ports - 2 x USB 3.1 Gen1 Ports (Etron EJ168A) - 1 x eSATA3 Connector - 1 x RJ-45 LAN Port with LED (ACT / LINK LED and SPEED LED) - 1 x IEEE 1394 Port - 1 x Clear CMOS Switch with LED - HD Audio Jack: Side Speaker / Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone	I / O Panel - 1 x PS / 2 Mouse Port - 1 x PS / 2 Keyboard Port - 1 x Coaxial SPDIF Out Port - 1 x Optical SPDIF Out Port - 6 x USB 2.0 Ports - 2 x USB 3.1 Gen1 Ports (Etron EJ168A) - 1 x eSATA3 Connector - 1 x RJ-45 LAN Port with LED (ACT / LINK LED and SPEED LED) - HD Audio Jack: Side Speaker / Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone
Storage
Connector	- 6 x SATA3 6.0 Gb / s connectors by AMD SB950, support RAID (RAID 0, RAID 1, RAID 0+1, JBOD and RAID 5), NCQ, AHCI and Hot Plug functions - 2 x SATA3 6.0 Gb / s connectors by Marvell SE9120, support NCQ, AHCI and Hot Plug functions (SATA3_8 connector is shared with eSATA3 port) - 1 x ATA133 IDE connector (supports 2 x IDE devices) - 1 x Floppy connector - 1 x IR header - 1 x COM port header - 1 x IEEE 1394 header - 1 x HDMI_SPDIF header - 1 x Power LED header - CPU / Chassis / Power FAN connector - 24 pin ATX power connector - 8 pin 12V power connector - CD in header - Front panel audio connector - 2 x USB 2.0 headers (support 4 USB 2.0 ports) - 1 x USB 3.1 Gen1 header (supports 2 USB 3.1 Gen1 ports) (Etron EJ168A) - 1 x Dr. Debug (7-Segment Debug LED)* *Check the Dr. Debug code list here< / a>.	- 5 x SATA3 6.0 Gb / s connectors, support RAID (RAID 0, RAID 1, RAID 5 and RAID 10), NCQ, AHCI and Hot Plug functions - 1 x IR header - 1 x COM port header - 1 x HDMI_SPDIF header - 1 x Power LED header - CPU / Chassis / Power FAN connector - 24 pin ATX power connector - 8 pin 12V power connector - Front panel audio connector - 3 x USB 2.0 headers (support 6 USB 2.0 ports)
BIOS	- 32Mb AMI UEFI Legal BIOS with GUI support - Supports "Plug and Play" - ACPI 1.1 Compliance Wake Up Events - Supports jumperfree - SMBIOS 2.3.1 Support - CPU, VCCM, NB, SB Voltage Multi-adjustment	- 32Mb AMI UEFI Legal BIOS with GUI support - Supports "Plug and Play" - ACPI 1.1 Compliance Wake Up Events - Supports jumperfree - SMBIOS 2.3.1 Support - CPU, VCCM, NB, SB Voltage Multi-adjustment
Support CD	- Drivers, Utilities, AntiVirus Software (Trial Version), CyberLink MediaEspresso 6.5 Trial	- Drivers, Utilities, AntiVirus Software (Trial Version), CyberLink MediaEspresso 6.5 Trial
Software and UEFI
Hardware Monitor	- CPU Temperature Sensing - Chassis Temperature Sensing - CPU, Chassis, Power Fan Tachometer - CPU Quiet Fan - CPU, Chassis Fan multi-speed control - Voltage Monitoring: +12V, +5V, +3.3V, Vcore	- CPU Temperature Sensing - Chassis Temperature Sensing - CPU, Chassis, Power Fan Tachometer - CPU Quiet Fan - CPU, Chassis Fan multi-speed control - Voltage Monitoring: +12V, +5V, +3.3V, Vcore
OS	- Microsoft Windows 10 64-bit / 8.1 32-bit / 8.1 64-bit / 8 32-bit / 8 64-bit / 7 32-bit / 7 64-bit / Vista™ 32-bit / Vista™ 64-bit / XP 32-bit / XP 64-bit	- Microsoft Windows 10 64-bit / 8.1 32-bit / 8.1 64-bit / 8 32-bit / 8 64-bit / 7 32-bit / 7 64-bit / Vista™ 32-bit / Vista™ 64-bit / XP 32-bit / XP 64-bit
Certifications	- FCC, CE - ErP / EuP Ready (ErP / EuP ready power supply is required)	- FCC, CE - ErP / EuP Ready (ErP / EuP ready power supply is required)
Accessories	- 1 x ASRock SLI_Bridge_2S Card - Quick Installation Guide, Support CD, I / O Shield - Floppy / ATA 133 Cables - 4 x SATA Data Cables (optional) - 2 x SATA 1 to 1 Power Cables (optional) - 1 x 3.5mm Audio Cable (optional) - 1 x Front USB 3.0 Panel - 4 x HDD Screws - 6 x Chassis Screws - 1 x Rear USB 3.1 Gen1 Bracket	- 1 x ASRock SLI_Bridge_2S Card - Quick Installation Guide, Support CD, I / O Shield - 2 x SATA Data Cables (optional) - 1 x 3.5mm Audio Cable (optional)