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Asus Sabertooth 55i TUF Motherboard - Asus Sabertooth 55i TUF Motherboard

Ardjuna Seghers

By Ardjuna Seghers



Our Score:


You're pretty much forced to use the BIOS for overclocking purposes, as - unlike on other high-end Asus boards such as the P7P55D Deluxe - no software utility is provided for this purpose. It's a shame as otherwise the software front is very well covered. Asus InstALL automatically installs all the drivers and utilities for you.

These utilities include Update, which lets you easily retrieve and install the latest BIOS revision from within Windows, PC Probe II and T. Probe for monitoring temperatures and voltages, and Fan Xpert, which can intelligently control all your fans according to temperature. The coolest thing about Fan Xpert is that it will assess the performance of whatever fan you're configuring to see how well it performs and assign fan-speed levels to it accordingly.

In terms of overclocking this board is pretty good. Even without dipping into advanced BIOS features such as CPU Differential Amplitude or Clock Skew, and without changing the voltage (leaving the Offset option to handle this aspect automatically), we easily managed to get all four cores of our of our Core i5 750 running at an astonishing 4.2GHz when in Turbo mode. This was achieved simply by raising the internal bus clock speed to 200, and even then we were only constrained from higher overclocks by the fan's inability to cope with the extra heat output. This also limited our Core i7 870 CPU, which would run stably at 4333MHz (with bus speed at 180) before ramping up to excessive heat levels.

As expected then we have an excellently-performing motherboard; the question is if at £184 it's worth the premium. For less money than this you can get the aforementioned P7P55D Deluxe, which garnered itself a Recommended Award when we reviewed it last month, and did slightly better at overclocking.

The Sabertooth 55i has a little more here and less there. On the positives side, it offers higher durability (though this is unlikely to be a significant factor for most people, as motherboards tend to survive far beyond their useful lifespan) and eSATA on its I/O. On the negatives side, there's one less SATA header, one LAN port instead of two, and no co-axial digital audio output. Of course the P7P55D Deluxe's unique TurboV remote and special overclocking features are also lacking, though in terms of raw overclocking performance there's not much between them.


Asus' Sabertooth 55i TUF is probably the toughest consumer motherboard around, combining rugged features with excellent layout and truly impressive performance. However, for most it probably won't be worth the premium over 'lesser' boards.

Overall Score


Scores In Detail

  • Performance 9
  • Value 7


October 15, 2009, 4:27 pm

It would help if you actually mentioned the warranty in these articles. That's the one thing missing from your otherwise enjoyable site.

...motherboards tend to last to survive far beyond their useful lifespan. Not in my experience with Asus they don't. I had 2 same boards fail on me with the same fault and because you can't RMA direct to Asus, I was stuck with the retailers refusal to do anything about it. I haven't bought Scan or Asus since. Get an EVGA board, 10 year warranty and direct RMA. You know it's worth it :)


October 15, 2009, 6:30 pm

I've been working in a big electronics store for the last 7 years and I've seen faulty Asus motherboards only couple of times. And there was absolutely no problem to get a replacement from the distributor. And you can get direct RMA here in Poland - all you need is to fill in the form on the Asus website. My current PC is based on an Asus MB, as 2 previous PC's before it.


October 15, 2009, 9:41 pm


Indeed, kind of forgot to mention that, apologies. Unfortunately it's just the standard 3years as far as I'm aware.

I must admit that I've used an Asus board in one of my previous PCs and like with S_p_i_d_e_r it lasted as long as the rest of the machine did.

BTW, we usually mention warranties on, for example, laptops in the feature table.


October 16, 2009, 2:18 pm


Our current warranty is 3 years, with an estimated 5 days turnaround time if you purchase from an ASUS authorised reseller.

I'm sorry for the problems you've experienced in the past. Our RMA service has been changed quite radically in the last 3 months to help improve the consumers experience of ASUS.


October 16, 2009, 8:43 pm

well intel has managed to confuse me, so you can use the i7 and i5 in the P55 but only the i7 in the X58? I thought the i7 and i5 were going to be seperate lines that you choose one and if you wanted the other you had to buy a new motherboard aswell


October 17, 2009, 9:08 pm

That's nice to read ASUS UK, but it's once bitten twice shy for me. Unless you're saying there IS now a direct RMA procedure? I bought Asus for at least 10 years prior to this experience. (back when the pcchips website had a wooden veneer background image and you had to try your best to find drivers for various chipsets using FCC codes and Acer was still ALi :D)

I felt at the time, that had I been able to convince the retailer to ask Asus on my behalf, that Asus would have seen straight away that it was a legitimate claim. The retailer refused to do that. As I had no direct recourse with Asus, I decided to take my money elsewhere.


October 17, 2009, 9:11 pm

PS: thanks Ardjuna; warranty details are right up there on my list when looking for new hardware.


October 19, 2009, 7:16 am

I am not an Asus fan but it makes decent products. I give a big thumbs up for this motherboard and Asus. Good and different kind of effort.

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