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ASUS Sabertooth X99 Review


Asus Sabertooth X99 Closer Look:

ASUS sets itself apart from the rest of the crowd in many ways with the software and hardware packages, but one of the best things the company has done over the past few generations has been the implementation of the Crash Free UEFI BIOS. Starting with the P67 chipset launch, the UEFI BIOS has been getting smoother and easier to use, with new features added as each new generation is released.

New for the Z87, then Z97 chipset and Haswell launch, were some really cool features, such as a more in-depth EZ mode and a Last Modified tab that tracks changes as you work though the BIOS, presenting the user with a map to the options used to generate the performance settings or even just the mundane changes. You also get: Quick Note to leave yourself messages in the BIOS or to list specific settings so you can remember them; F4 shortcuts menus for your favorites; SATA Port renaming; and the EZ Tuning Wizard, which has to be one of the top additions to the ASUS BIOS. Now with Haswell-E and the X99 platform, ASUS UEFI continues to impress with those same innovations seen on the latest X99 boards like the X99 Deluxe and Rampage V Extreme.

In the past, EZ Mode was used when you really do not want or need to spend the time going through the advanced section of the BIOS. It can be daunting to the novice user, but the more adept can take advantage of the tuning abilities found in the Advanced section. You get all the basic functionality in the EZ Mode section of the BIOS. You can set the boot order, view and manage fan profiles, use the EZ Tuning feature, and illustrate the hardware that is installed in the Sabertooth X99. Here's where it gets interesting – ASUS has totally revamped the EZ Mode to deliver much of the functionality you get in the Advanced section of the BIOS all on a single page for the less adept or if you just want to jump right in.



In the top right section of the EZ Mode page is the EZ Tuning utility, which walks you through a series of easy-to-answer questions dealing with intended usage, cooling capabilities, storage configuration, and the estimated result from the changes. After the tool does its magic, you end up with a result based on your input. On the Sabertooth X99, I got a more conservative result than I had with the X99 Deluxe and Rampage V Extreme at 3.97GHz. Not bad, but it leaves room for improvement.  A new addition here is the ability to set up RAID storage solutions in addition to tuning the CPU and memory performance.




Once you move into the Advanced Mode, there are a total of eight tabs to explore, with the first section being My Favorites. Here is where you get some of the new tweaks to the Crash Free BIOS. You can build a series of shortcuts that allow you to jump straight to certain functionality. In this case, I put shortcuts in place for some quick and easy adjustments. You add shortcuts by pressing the F4 button and browsing for the items to add. Outside of the eight tabs are shortcuts across the top of the Advanced section to quickly execute the actions. You can set up hot keys for functions or access the EZ Tuning menu with one mouse click. Quick Note allows you to leave yourself notes as to what may or may not work, or just simple reminders. Once you choose to exit the BIOS, you get a list of the items last changed. All pretty functional stuff to help you out.



The Main page option shows the system time, date, BIOS revision and build date, installed CPU and processor speed, memory capacity, system language, and security options including passwords. Not the section you will spend a lot of time in, but nevertheless a source of some valuable information and functionality.



The Advanced tab provides a way to manage much of the system functionality. The CPU configuration tab is used to modify the CPU operating parameters outside of the frequency and voltages. PCH Configuration is where you can enable or disable Intel's drive enhancements and PCIe assignments. Onboard device configuration is used to enable or disable onboard hardware. SATA Configuration is used to set up drive operating parameters, as well as showing the port availability. 





The Monitor section is just what the name implies. Under each category you can view the operating characteristics and current state of the pertinent voltages, the fan speeds, temperatures, and enable or disable the Q-Fan speed controls. Since Fan Xpert III manages things quite well, the latter should be left alone unless you are looking for full manual control. Lastly, Anti Surge support can be turned on or off in this section.



Boot: Under this section, Fast Boot can be turned on or off, SATA and USB ports can be enabled or disabled, and DirectKey functionality can be enabled to access the BIOS with Fast Boot enabled. Logo display at boot can be turned off so you can view the P.O.S.T. sequence.  Wait for ERROR F1 messages can be turned off (I find this helpful when not running a fan off the CPU fan header), and the boot sequence can be set up here.



Tool: Outside the Extreme Tweaker section, this section is one of the most useful areas of ASUS' UEFI Crash Free BIOS. ASUS EZ Flash utility is a simple-to-use option for flashing the BIOS on ASUS motherboards that has yet to fail on me after years of use. ASUS Overclocking Profile lets you save and/or load profiles from the BIOS save files or from a USB Flash drive. Coupled with the Last Modified tool, you can make sure you save those important changes. ASUS SPD Information allows the user to get a look at the SPD profile programmed to the DIMMs, if they are not savvy using utilities in the OS. As long as you can get in the BIOS, you can see this information. EZ flash makes it easy to flash the BIOS with a one stop tool that does it all. 




The Ai Tweaker section of the BIOS is where you will spend a good majority of your time if you are used to overclocking manually. This section provides all the CPU and DRAM specific settings to get the most from your hardware. Up front, ASUS has said the "auto" rules for the vast majority of settings are tuned well enough that no manipulation or adjustments are needed for most of the settings. In fact, I used only the CPU vcore, CPU Ring voltage, DRAM Voltage, DRAM Frequency, CPU and Cache ratio, and the basic timings to get the Core i7 5960X up to its 4.58GHz overclock. However, you have access to pretty much every option as far as voltages, Load-Line Calibration, current limits, and overrides.

The top of this section shows the current state of the hardware. AI Overclock tuner can be set to Auto, Manual, or XMP. DRAM Timing Control allows the end user to tune the timings of the installed modules for improved frequency margins or outright performance. External Digi+ Power control is used to set and apply a value for LLC, along with the current limits, phase controls, VRM Switching frequency, and more. Again, the auto rules are pretty good. 

Toward the bottom of the page, we finally get to the myriad of  voltages that can be tweaked. It can't be overstated that ASUS does a lot of in house validation and testing with a range of CPUs to deliver the best possible auto rules in its Crash Free UEFI BIOS. 






ASUS' UEFI CrashFree BIOS is pretty much the gold standard by which all others are measured when it comes to usability right out-of-the-box. Working my way through the BIOS was like getting on a bicycle. A quick few clicks through and the pathways all start rushing back to me. Navigating through the BIOS is fairly simple with its well laid out and organized appearance.

  1. ASUS Sabertooth X99: Introduction & Closer Look
  2. ASUS Sabertooth X99 Closer Look: The Board
  3. ASUS Sabertooth X99 Closer Look: Programs & Utilities
  4. ASUS Sabertooth X99 Closer Look: Programs & Tools Continued
  5. ASUS Sabertooth X99 Closer Look: The BIOS
  6. ASUS Sabertooth X99: Specifications & Features
  7. ASUS Sabertooth X99 Testing: Setup & Overclocking
  8. ASUS Sabertooth X99 Testing: PCMark 8, SiSoft Sandra
  9. ASUS Sabertooth X99 Testing: Cinebench R15, X.264, AIDA 64
  10. ASUS Sabertooth X99 Testing: Crystal Diskmark, Atto 2.47
  11. ASUS Sabertooth X99 Testing: iPerf, RMAA
  12. ASUS Sabertooth X99 Testing: Gaming
  13. ASUS Sabertooth X99 Testing: Conclusion
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