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ASUS Unveils First TUF Series Motherboard, Sabertooth 55i


Editor & Senior Moderator
Staff member
Oct 9, 2007
34,496 (9.18/day)
Hyderabad, India
ASUS, the leader in innovative motherboard solutions, today unveiled the first motherboard in its newly-developed "TUF" (The Ultimate Force) Series, the SABERTOOTH 55i. The TUF Series is specially developed to meet the heavy computing demands of power users and perform well even under extreme conditions. Such computer enthusiasts often demand high-quality motherboard components and the most stable computing platforms. To achieve uncompromising stability, TUF Series motherboards have undergone a more stringent testing program than what most motherboard producers currently undertake. Solidly constructed and equipped with resilient components that have passed demanding military-style testing, the TUF Series triumphs over the harshest operating conditions to deliver robust performance. The debut SABERTOOTH 55i model, designed around a "Marine Cool" concept, incorporates the Intel P55 chipset and "tough" features to give users a supremely solid and stable computing platform.

Ultimate Heatsink Cooling with Unique CeraM!X Microfin Coating
The ASUS SABERTOOTH 55i motherboard, equipped with the new CeraM!X heatsink, delivers exceptional cooling to active components and uncompromising system stability even under intense operating conditions. With its advanced ceramics-based composition—commonly used in the aerospace industry for heat insulation—the heatsink dissipates heat rapidly to achieve ultimate cooling. Ceramics replace traditional anti-oxidant compounds to create a microfin surface texture for enhanced cooling. This rough surface offers an expanded area for heat induction into the surrounding air. As a result, more heat is rapidly conducted away from the active system—allowing users to enjoy previously unattainable levels of stability.

Direct Memory Cooling with Affordable CoolMem! Fan Frame
As optimal memory operation relies on good cooling, the SABERTOOTH 55i motherboard includes the CoolMem! Fan Frame that encloses most standard 40mm or 50mm computer fans and fits them directly over the memory module. Users thus gain an affordable cooling solution that significantly stabilizes memory operation.

Resilient Performance from Military-certified Capacitors and MOSFETs
To ensure users experience uncompromising performance, the SABERTOOTH 55i incorporates only high-grade, rigorously-tested components. These perform robustly even under the most demanding conditions. For example, all its capacitors have undergone thermal shock tests to ensure continuous, stable operations during rapid temperature changes in the 60°C range. In fact, all its capacitors and VRM MOSFETs have been certified for military-level use through stringent testing.

Optimized Power Use with E.S.P.
The SABERTOOTH 55i motherboard delivers E.S.P. (Efficient Switching Power) to all major components for superb system efficiency. Besides delivering efficient power to the CPU and memory, the power design also applies the same level of efficient power to the PCIe x16 expansion slots and IC. This improves overall power efficiency and reduces the amount of heat generated—resulting in cooler and more reliable operations. Additionally, the E.S.P. converts power at 90% efficiency compared to a conventional linear design that is only about 60% efficient. Built for robust performance, the SABERTOOTH 55i—and ASUS TUF Series motherboards as a whole—incorporates the latest breakthroughs in heatsink composition and high-grade, military-tested components to enable users to build their DIY systems around one of the most solid and stable motherboards ever created.

Nov 16, 2004
450 (0.09/day)
Processor Intel Core i5 3570K | Intel Core i3 3220
Motherboard Asus P8Z77-I Deluxe | Gigabyte H77N-WIFI
Cooling Deep Cool Gamer Storm Gabriel | Intel Stock HSF
Memory Crucial Ballistix Tactical Tracer 1866 8GB (4x2) | G.Skill Ares 1600 8GB (4x2)
Video Card(s) Zotac GT 640 Synergy Edition | Palit GeForce GT 640
Storage Intel 330 180GB + WD Scorpio Blue 1TB | Seagate Barracuda 500GB
Display(s) Samsung P2250 | Samsung S19A100N
Case Jonsbo U1 | Coolermaster Elite 120
Audio Device(s) On-Board Realtek ALC898 + Sound Blaster X-Fi MB3 | On-Board Realtek ALC892
Power Supply Silverstone ST45SF-G | Silverstone ST50F-ES
Software Windows 7 Home Premium 64 Bit SP1
and the price??? :D
May 31, 2008
5,787 (1.64/day)
Switzerland, Heart of Europe
System Name Fractality 1.0
Processor Intel Core i7-860 @ 3.6GHz
Motherboard EVGA P55 SLI
Cooling Prolimatech Megahalems and four Fractal Design 120mm fans, sleeved
Memory 16GB Kingston Hyper RAM
Video Card(s) PNY GeForce 580 XLR8
Storage 64GB and 180GB SSDs / 1TB and 2TB HDDs
Display(s) 24" Acer V243W
Case Fractal Design Define R2, sleeved all I/O cables
Audio Device(s) onboard
Power Supply Corsair HX750W modular, sadly only stock sleeving
Software Win 7 64bit
Military certified huh? I guess they don't want to be without Crysis in the Middle East...
Its interesting, but I dare to ask: is it necessary?


New Member
May 14, 2009
768 (0.24/day)
Military certified huh? I guess they don't want to be without Crysis in the Middle East...
Its interesting, but I dare to ask: is it necessary?
hahaha is "it" ever? lol we still buy "it" tho (enthuzo) Atleast they did some cool things on it cant wait for review
Nov 23, 2008
151 (0.05/day)
Fremont, CA
Processor Intel Core 2 Quad Q9550 @ 2.83 GHz
Motherboard ASUS P5Q Pro
Cooling Thermalright Venemous-X
Memory OCZ Reaper HPC 4GB DDR2 1066
Video Card(s) XFX HD-587A-ZNF9 Radeon HD 5870
Storage Western Digital Caviar Black WD6401AALS
Display(s) ASUS VH242H
Case Lian Li PC-A05NB
Power Supply CORSAIR HX Series CMPSU-620HX
Software Windows Vista Ultimate 64-bit
Looks good, hopefully the X58 or 790FX versions are coming soon. Don't think I'll ever adapt P55 as long as those two platforms exist.
Mar 5, 2007
1,366 (0.34/day)
Chicago, IL
System Name Stealth 2 Duo Turbine
Processor Intel e6850 @ 3.8ghz
Motherboard Asus Striker Extreme
Cooling CoolerMaster V8 Modded With 2 white LED's & 100CFM fan
Memory OCZ DDR2 1066_ SLI Black-4GB
Video Card(s) 2xMSI 8800GT"s SLI
Storage <<HDD For OS>> 2x150GB_Western Digital Raptor_Raid 0. <<HDD For Storage>> 3 x 1TB
Display(s) ACER B273HU 27" LCD 2048x1152
Case Apex SuperCase_Custom 7 month Build
Audio Device(s) Striker Extreme Add-In Card HD-Audio
Power Supply EnerMax INFINITI 720watt
Software SE7VEN ULTIMATE 64bit
Benchmark Scores 3DMark01=NTTA, 3Dmark06=NTTA 3Dmark_Vantage=NTTA, Core Temp v0.99.5=28C
Looks like a good board, & if it comes with that transparent memory fan,, even better
May 7, 2009
5,265 (1.66/day)
Marietta, GA USA
System Name ODIN
Processor AMD Ryzen 7 1800X @ 3.9 GHz (all cores)
Motherboard ASRock TaiChi X370
Cooling Cryorig Universal R1
Memory 16 GB G.Skill FlareX @ 2933 MHz 14-14-14-34
Video Card(s) Nvidia EVGA GeForce GTX 1070 SC 8 GB
Storage WD M.2 1TB SSD :: 4 TB RAID 1 Array of 2 drives
Display(s) Dell S2716DG 27" 144 Hz G-SYNC
Case NZXT H630
Audio Device(s) Onboard Audio
Power Supply Antec HCP 850 80+ Gold
Mouse Corsair M65
Keyboard Corsair K70 RGB Lux
Software Windows 10 Pro 64-bit
Benchmark Scores I don't benchmark.
harshest operating conditions
So now I can computer while in a African Safari being attacked by a pride of lions.

Seriously, this will be great for the people going after the OC crown in the near future.
Jun 18, 2008
356 (0.10/day)
Processor AMD Ryzen 3 1200 @ 3.7 GHz
Motherboard MSI B350M Gaming PRO
Cooling 2x Dynamic X2 GP-12
Memory 2x4GB GeIL EVO POTENZA AMD PC4-17000
Video Card(s) GIGABYTE Radeon RX 560 2GB
Storage Samsung SSD 840 Series (250GB)
Display(s) Asus VP239H-P (23")
Case Fractal Design Define Mini C TG
Audio Device(s) ASUS Xonar U3
Power Supply CORSAIR CX450
Mouse Logitech G500
Keyboard Corsair Vengeance K65
Software Windows 10 Pro (x64)
Hah! I love the part about "military-style" testing. This is an absolute tour de force of marketing... Just look how gracefully they dance around the truth, how their array of colorful adjectives seems to draw paint from the canvas itself... Breathtaking.


Notice also... Even if this "military-style" testing held water, they only actually claim that the components were tested, not the board itself, so perhaps they consider the solid caps to be military-grade, but that doesn't mean this thing, fully assembled, can be run over by a tank or anything, despite the look of it.

That said, it really does look like a slick board. Are these intended to be cheaper than Rampage/Maximus boards? I would think so... Almost like Maximus-grade components without all the added crap. Well, without most of the added crap anyway...


Senior Moderator
Staff member
Jul 19, 2006
42,465 (10.10/day)
Processor i7 8700K
Motherboard Asus Maximus Hero X WiFi
Cooling Water
Memory 16GB G.Skill 3200Mhz CL14
Video Card(s) GTX 1080
Storage SSD's
Display(s) Nixeus EDG27
Case Thermaltake Core X5
Audio Device(s) Soundblaster Zx
Power Supply Corsair H1000i
Mouse Zowie EC1-B
Brown and beige? Arrgh, It's 1979!!! I can't wait too see some real world temperatures on the thing. Perhaps a budget minded "Snaggletooth" board is in order?
Jan 12, 2009
1,236 (0.38/day)
System Name Corsair 900D
Processor FX8350
Motherboard Asus Crosshair V
Cooling Corsair H110I
Memory 16GB Corsair Vengeance
Video Card(s) Asus GTX1080
Storage 2x 500GB 1x 1TB WD Green
Display(s) Acer 24" 1080p / HP 27" 1080p LED
Case Corsair 900D
Audio Device(s) Sound Blaster X-Fi (Built in/Mobo) - Xonar Sound Card
Power Supply Enermax 1020Watt
Mouse Logitech Something Whatever
Keyboard Logtich G910
Software Windows 10
When it takes a bullet and still work's then its "Military Certified"..

This was the old "marine" board layout was it not?


Resident Grammar Amender
Feb 21, 2005
6,477 (1.37/day)
System Name BeeR 6
Processor Intel Core i7 3770K*
Motherboard ASUS Maximus V Gene (1155/Z77)
Cooling Corsair H100i
Memory 16GB Samsung Green 1600MHz DDR3**
Video Card(s) 4GB MSI Gaming X RX480
Storage 256GB Samsung 840 Pro SSD
Display(s) 27" Samsung C27F591FDU
Case Fractal Design Arc Mini
Power Supply Corsair HX750W
Software 64bit Microsoft Windows 10 Pro
Benchmark Scores *@ 4.6GHz **@ 2133MHz
I saw this board in the 'flesh', my pictures are pretty blurry, can post them once I'm home if you like.