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ASUS Socket AM3/AMD 890FX/CrossFireX/SATA 3.0 and USB 3.0/A and GbE/ATX Motherboard Crosshair IV Formula

4.2 out of 5 stars 56 customer reviews
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  • Power Connector: 1x 24pin Main Power; 1x 8pin CPU Power
  • Ports: 12x USB 2.0 Ports (7 rear, 5 by headers); 2x USB 3.0 Ports; 2x IEEE 1394a Ports(1 rear, 1 by header); 1x PS/2 Ports; 1x eSATA Port; 1x Optical S/PDIF Out Port; 1x RJ45 LAN Port; Audio I/O Jacks
  • Memory: 4x 240pin DDR3-2000(O.C.)/1800(O.C.)/1600(O.C.)/1333/1066 DIMMs, Dual Channel, ECC/Non-ECC, Un-buffered Memory, Upto 16GB Slots: 3x PCI-Express 2.0 x16 Slots(Support ATI CrossFireX Technology); 1x PCI-Express 2.0 x4 Slot; 2x PCI 2.2 Slot
  • CPU: Socket AM3 Support AMD Phenom II/Athlon II/ Sempron 100 Series Processors, Support AMD 140W CPU; Support 45nm CPU; FSB Upto 5200 MT/s Chipset: AMD 890FX & SB850
  • SATA: 6x SATA3 Ports, Support RAID 0, 1, 5, 10; 1x SATA2 Port; 1x eSATA2 Port Audio: SupremeFX X-Fi 8-Channel High Definition Audio CODEC
  • CPU: Socket AM3 Support AMD Phenom II/Athlon II/ Sempron 100 Series Processors, Support AMD 140W CPU; Support 45nm CPU; FSB Upto 5200 MT/s Chipset: AMD 890FX & SB850
  • Memory: 4x 240pin DDR3-2000(O.C.)/1800(O.C.)/1600(O.C.)/1333/1066 DIMMs, Dual Channel, ECC/Non-ECC, Un-buffered Memory, Upto 16GB Slots: 3x PCI-Express 2.0 x16 Slots(Support ATI CrossFireX Technology); 1x PCI-Express 2.0 x4 Slot; 2x PCI 2.2 Slot
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2 used from $150.00

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Technical Details

  • Processor Socket: Socket AM3
  • Form Factor: ATX
  • Chipset Type: AMD 890FX
  • RAM Memory Technology: DDR3 1066;DDR3 1333;DDR3 1600;DDR3 1800;DDR3 2000

Product Description

ASUS Crosshair IV Formula - AM3 - AMD 890FX - DDR3 - Republic of Gamers - ATX Motherboard

Product Information

Product Dimensions 14.6 x 14.6 x 3.7 inches
Item Weight 4 pounds
Shipping Weight 5 pounds
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item is not eligible for international shipping. Learn More
ASIN B003G40Z66
Item model number CROSSHAIR IV FORMULA
Customer Reviews
4.2 out of 5 stars 56 customer reviews

4.2 out of 5 stars
Best Sellers Rank #1,640 in Electronics > Computers & Accessories > Computer Components > Motherboards
Date first available at Amazon.com April 8, 2010

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Reviews

Top Customer Reviews

Asus has hit a homerun with this mobo! Using the Asus Crosshair IV Formula and my new AMD 1055t Athlon II x6 processor, I was able to easily OC the stock 2.8 Ghz proccy to 3.76 Ghz with almost no effort whatsoever. I had originally intended to go with the AMD 1090t proccy but couldn't see paying almost $100 extra (at that time). I realize now the Black Edition processors are a little better with faster through put but I'm still very happy.
My first impression of the packaging was simply "WOW". Normally you expect to get a mobo in a box that's been clear-tape sealed with a disk an instruction booklet and a CD and perhaps some cables/ribbons. This package is like no other mobo you'll ever buy. An extremely detailed booklet with plenty of info on anything and everything about the board and it's features as well as Bios tips. Cables, tie straps, and an amazing rear IO plate that put my faith back into premium quality mobos. Also included is an ROG (Republic Of Gamers) badge sticker as well as a pretty large side case sticker that goes perfectly with my Red and Silver Backtrack 4 logo ;). Assembly of the board is standard except for the RAM slots which feature one end clip on each slot. Yep, no more fumbling around underneath wires to have to pop out your RAM sticks with two latches, this feature alone is enough for me to be happy but it doesn't stop there. Asus has gone out of their way to deliver not only performance but a great assembled package that shows the pride of the ROG community. Some (including one of my closest friends) balked at the color scheme until he got a longer look at it. Admittedly, red wouldn't have been my first choice either since I like blue and green better but it quickly grows on you aesthetically.
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Verified Purchase
This Motherboard rocks.
My Rig
Haf 922 Case
AMD 1090T Thuban 6 Core Black Box
G.Skill 100gb SSD
2nd Drive just normal 7500 WD 1 Terrabyte Drive
G.Skill 4gb x 2 ddr3 1333mhz Ram
Corsaire H-50 Watercooled CPU Unit
XFX ATI Radeon HD 5670 DDR5 1GB Memory Card
650 Watt Power Supply
Pioneer Blu-Ray 505

The Good.
Overclocked the CPU to a solid 4.0 ghz (Passed Prime 95 torture test)
with G.Skill Ram running at it's rated 1333. I used manual settings
which I found on Youtube and tweaked a little

According to the utility Asus Probe the Northbridge, CPU and Southbridge are all running at under
50 Degrees Celsius

My H-50 Cooler fit perfectly inside the Motherboard but I think a bigger cooler could block your last
Memory slot.
.
For my Haf 922 case the Sata Cable connectors are right next to my drives
so I don't have sloppy cables reaching across the board or had to buy 3 footers to spring behind the backplate. Interestingly enough the temperature went
down by 2 degrees when I operated the system with the case closed. Really good airflow in the Haf 922.

The Bad;
I feel like Asus should provide Motherboard Standoffs because I had to do some fiddling and really tighten the screws
to get a good line up for the Back Plate.

My built in sound card didn't work properly. I tried everything installing de-installing drivers devices etc but for some reason sound only comes out of 1 speaker.
This is not a biggie. I'm going to throw in a $30.00 SoundBlaster Card and the world should be right. But still if one pays more than $200.00 for a board you would think the sound would work.
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Verified Purchase
I ordered this through Amazon with 2 day shipping and it showed up the next morning. I use this board in conjunction with an AMD PII 1090T Thuban, 4gb of DDR3, a BFG Nvidia 9800 GTX+ OC, 32 gb high speed ssd and a 500gb 6gbs pair of data drives raided together.

This motherboard is awesome, it's excellent for gamers but is tuned for over-clocking. I have actually used almost every feature on the board and have to admit, they are REALLY useful.

Their are a couple of issues though. You MUST update the BIOS (this is a no brainer and should be done regularly) and there is a bug with Vdroops and LLC= Load Line Calibration. Right now if you turn LLC off, the system suffers a MASSIVE V-droop. IE: set the system at 1.47v and it return 1.356v at load. Turning LLC on can cut back on the Vdroop, however it also raises your operating temperature a bit and is unstable with a high overclock. ASUS is working on this already, a fix should be on the way shortly, until then you can compensate by finding how large the Vdroop is and over-volting the difference. Not what I recommend doing, but it works.
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Verified Purchase
Purchased this motherboard in conjunction with an AMD 965 Black Edition Quad Core processor and the two make for a great setup. This mobo is a real treat, has a lot of great utilities and functions for custom profiles, overclocking and more. Easy to install and setup and made for a vrey hassle free RAID array setup. Plenty of PCI-e slot spacing for going up to triple SLI or Crossfire configurations, but spacing does not really allow for a 4th grpahics card....which is overkill anyhow. Even the onboard sound is pretty decent. Really liking this motherboard!
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