A while ago I had to help out a friend with no money, no job and a ton of student debt (hi Joseph!) who broke his mouse. I sent him a Steelseries Xai, the same mouse he managed to break. With this new mouse he won…a Steelseries Xai. A couple of weeks later this mouse was delivered to me, and here’s my review of it. This mouse has been on the market for about 2 years now, but I had no intention of getting one before, so please excuse this rather late review.
Steelseries
The last few years Steelseries has emerged as a ‘big’ manufacturer of gaming peripherals, offering mice, keyboards, headsets and mousepads. Like any other manufacturer of gaming-related peripherals they offer some great products and some totally crap ones. After the review you’ll know in which category I judge the Xai to be.
Sensor
The Xai is equipped with the Avago A9500 sensor, capable of over 5000DPI and tracking speeds in excess of 3m/s (possibly even more than 6 m/s). This sensor is quite popular and also used in the Logitech G500, G9x and many other mice. The way the sensor is configured in the Xai minimizes lift off. The lift off distance was small on all surfaces I tested.
The sensor isn’t without problems though. The main issue is some positive acceleration. All mice using the sensor suffer from it and no firmware update has been released or announced to fix this. I’ve also noticed a few lockups of the mouse cursor during games. Once this was solved by getting a hair from the sensor, but the other times there was no clear reason why the cursor stopped or suddenly slowed down during movements. Some online forums make me believe cloth pads and the Xai sensor aren’t best of friends, claiming the A9500 sensor has much lower maximum speed on cloth pads and/or starts jittering much quicker on cloth pads when a tiny bit of dust gets on the sensor.
Body
Lefties rejoice, the Xai is ambidextrous so you can use it without any issues. The body is slightly smaller than the Deathadder and Zowie EC2, especially in height, making it slightly easier to really throw it around during fast action moments in games. The entire mouse is covered in a nice rubber-like material. Unlike the Zowie EC2 and Deathadder, the sides of the mouse are also covered with this rubber.
Underneath there are 3 large teflon glidepads, allowing the Xai to glide effortlessly across your mousepad. The cable is a nice braided one.
Buttons and scrollwheel
The main buttons need slightly more effort to push than the ones on the EC2 and Deathadder. Even with your finger near the top of the button, it still takes more effort to push than those other mice. Possibly because of this the Xai has a more distinct ‘clicky’ feel.
The scrollwheel is excellent, especially compared to the EC2 which has the most horrible scrollwheel I’ve ever felt in a gaming mouse. It’s fast and accurate and also has a good clicky feel to it.
On each side there are 2 buttons, these have a similar good click. They are a bit small, so you might have some trouble reaching them. Both the Deathadder and EC2 have much bigger buttons, but unlike the EC2 the side-buttons don’t feel like mashed potatoes when you press them. So if your fingers are of the right length and in the right position, the ones on the Xai will feel much better.
I was easily able to use the buttons on both sides, but I rarely do so it’s not a great plus for me.
Below the scrollwheel there’s another button. This one is typically used to quickly switch between DPI settings. It’s easy to reach (looking at you Razer Abyssus, Zowie EC2!), works instantly and is confirmed with a little light on top of the mouse.
LCD screen
The weirdest thing about the Xai is the LCD screen on the bottom. It’s a backlit, low-res LCD that displays the Steelseries logo. When you press and hold the DPI toggle on top for 1.5 seconds, you get a little menu.
In this menu you can configure a lot of things about the Xai. DPI (both for LED on/LED off), polling rate (anywhere between 125 and 1000Hz), acceleration and angle-snapping/prediction. This is absolutely lovely to use and means you can adjust nearly all Xai functions without installing the firmware.
Unfortunately the settings you make this way aren’t saved, so powering down/unplugging means you lose your settings. To make these settings permanent you need to set them using the (Windows-only) drivers. A minor annoyance.
Conclusion
Overall I’m quite pleased with the Xai. The only important problem is the sensor. The buttons on the Xai are absolutely lovely and going back to the EC2 and Deathadder makes them feel mushy in comparison. After using a Zowie EC2 for months I’d forgotten how nice it is to have a proper scrollwheel. The one on the Xai is miles ahead of the one on the EC2 and even the Deathadder.
I used to recommend the original 1800DPI Deathadder to all my friends, but I don’t think the Xai can take that place. The acceleration can be a problem depending on the aim-style you use, so I’d recommend someone to try the Xai first before deciding to get it, especially if you like to play on cloth pads. Apart from that, it’s the most pleasant mouse I’ve used in years.

Arie —






42 comments
Tweetproooooo arie!
- # - nice! +1I bet Joe split beer on his mouse as well
- # - nice! +1I’ve had very similar experiences with my xai but ultimately the problems it has with cloth pads made me return to the good old mx518.
The article is very well written and your ability to keep it short and precise deserves a gold star.
- # - nice! +4After another hour of pub TF2 I’d probably not recommend the mouse to anyone using a cloth pad. I’ve had about 3 of the weird sensor glitches during that hour.
Still, I like the mouse enough to give it another go on a different pad.
- # - nice! +1the mx518 is the king of all gaming mouses!
- # - nice! +2Pretty much reflects my own opinions on this mouse.
Excellent build quality with a weak sensor.
Kind of like driving a really well built car with a bad engine. Not a particularly enjoyable experience.
My Xai bricked itself after a week, cost me £70 at the time and Steelseries support fucking owned me on RMA/Warranty after months awaiting response.
Btw the sensor also makes negative acceleration. It’s approximately +-5% not just positive acceleration.
It has dynamic self-adjusting framerate. The sensor behavior changes randomly and frequently with no indication on this mouse.
Firmware is bad and hasn’t been updated in a long time as you indicated.
- # - nice! +2I was surprised how old the latest firmware was and how no mouse manufacturer with the A9500 has managed to address or even try to address the issues of the sensor.
- # - nice! +1Logitech G5 for life. Admittedly, it’s the first ‘gaming’ mouse I’ve had above a standard mouse, but still, I love it.
- # - nice! +1G5 is absolute trash :D
- # - nice! +2Snap! They keep breaking and I’ve tried loads of others but I always come back to the G5.
- # - nice! +1The positive accel is hardly noticeable (unlike the Kinzu for example). Arx snipes with this mouse at like friggin low sens, and it doesn’t show that he has troubles with it ;). The dust on sensor or whatever thing happens like once every 3 weeks or so. On a good pad (Puretrak talent) it has no tracking issues, and it doesn’t have the looking straight up/down when flicking for a RJ which all my recent Razer mice had. DA, DB3, and DA respawn all do it on Qck, Talent and Destructor (oh hey, razer mouse not working on a razer hard mat?!?!). DB G2 and Krait don’t however. And it happens way more often than the dust thing on the Xai, so the Xai actually beats the DA in that regard.
tldr: stop using bad cloth pads
ps. Arie, the review is useless if you don’t post what mouse surfaces you used.
- # - nice! +1You’re useless.
My main pad is a Razer Goliathus. It works great with my Zowie EC2 and Deathadder, the Xai, not so much.
I love cloth pads because they’re cheap and last for ages. All my plastic and aluminium pads wore out in about 3 months each.
I’ve tried the Goliathus, Exactmat, Destructor and my Ikea fake wood table :)
- # - nice! +6Qck, Talent, Destructor all overhyped shit mousepads
- # - nice! +1I agree on the Qck (makes DA’s skip for example, fuck knows why people still use that combo?). Destructor I don’t know, was my first hard pad and didn’t really like it+to small. Talent is the only pad on which I have no tracking issues with any mouse I own. Still has the looking at sky/ground thing when rocket jumping using 3g and 3.5g razer mice. Which is really annoying. I think we can conclude that everybody likes something different, and some combo’s just don’t work very well (Xai + non-talent cloth pad, DA/DA3,5/DBG3 + QcK, DA/DA3,5/DBG3 + rocket jumping, Kinzu + everything)
- # - nice! +2the comments alone are some kind of mice fetish
Nice to see a proper review…
Anyone know anything about the Puretrak Valor? Judging by a few threads about the place, aside from some now resolved issues early on, it looks like there might finally be a new mouse with a “perfect” (or at least close to it) sensor, using the Avago 3090 I believe, perhaps also the Cm Spawn, though that’s claw grip…
Any idea? :>
- # - nice! +1www.esreality.com/index.php?a=...
Also read the comments for user feedback.
- # - nice! +2Something to wait for then
- # - nice! +1Avago ADNS-9500 laser sensor:
Logitech G9x, Logitech G500, Steelseries Xai, Roccat Kone[+], Mionix Naos 5000, CM Storm Sentinel, Cyber Snipa Silencer, QPAD 5k, Ozone Smog, Speedlink Kudos and Gigabyte M8000X “Ghost” amongst others
Phillips Twin-eye laser sensor:
Razer Mamba, Razer Imperator, 3G and 3.5G Razer Lachesis, Saitek Cyborg R.A.T 7 and R.A.T 9 amongst others
Avago 3888 infrared sensor:
Razer Deathadder Respawn, Razer Abyssus
Other sensors:
Avago ADNS-6090: Roccat Kone, Logitech G9, Gigabyte GM-M8000 “Ghost”
- # - nice! +1Avago ADNS-6030: Microsoft Habu
Avago ADNS-3688: Razer Deathadder 3G, Razer Diamondback 3G, Razer Salmosa, Razer Boomslang Collectors Edition
Avago ADNS-3080/E: Logitech G3 Optical, Logitech MX-518 Optical, Razer Diamondback, Razer Diamondback Plasma (Limited Edition)
Cypress ONS: Steelseries Ikari Laser
STM OS MLT 04: Microsoft WMO, Microsoft Intellimouse 1.1/1.1a/1.1SE/1.1SS, Microsoft Intellimouse Explorer 3.0
www.overclock.net/mice/854100-...
- # - nice! +2Can somebody send me an MX518+WMO, so I can use that in my round-up :P.
- # - nice! +0Hope you’ll do a review of the new logitech g400 mouse that is suposed to replace the old but great mx518 :)
- # - nice! +0yes please
- # - nice! +0Get me one :)
- # - nice! +1i love everything about this mouse, except the accel :\
back to my IME 3.0, with that shitty mousewheel
- # - nice! +1which one you prefer? razer deathadder or xai?
- # - nice! +0The Xai’s shape and buttons with the Deathadder’s sensor. :P
- # - nice! +1This, but without the Deathadder looking at sky/floor issue + skipping on QcK (last is not really needed, because QcK is trash anyway :P). Kinzu shell with Xai feet and DA sensor with above fixes would also be sweet.
- # - nice! +1I use my Xai on a cloth pad, works fine for me :] best mouse that I have ever owned.
- # - nice! +3There is another problem on the mouse, people who have the new generation of the motherboard’s Gigabyte/Asus will see directly the issues – u cannot start the OS/Windows untill u plug the mouse out else ur pc will just restart everytime,
- # - nice! +0Tested 2 Xai and I decide to replace it…
Do not touch on this mouse it’s is also really sensitive to dust [it's will stop work&get crazy else u clean it] / Also not work’s aswell in the Steelseries SX ”What they’re recommanded to use” and like SS said? The best pad ever? fucking bullshit…
My pc had serious troubles booting with an abyssus plugged in.
- # - nice! +0I get this with my msi motherboard.
- # - nice! +0I had it with my old Gigabyte motherboard. The problem went away after updating the BIOS.
- # - nice! +0Fucking weird, but atm i’m using the DA 3.5 & works great
- # - nice! +0Love the Xai, not a big fan of it’s reliability. Had 4 so far, two of them work (one of them barely) and one the USB connection broke, the other the mouse 1 plastic thing underneath snapped rendering it useless.
When it’s working, it’s my favourite mouse.
- # - nice! +0Hi Arie,
I wonder what is your test protocol about these mouses. I mean when you test z axis tracking how can you be sure that it’s not your hand which is slightly moving right or left?
Same thing about jittering tests : its hard to do EXACTLY the same movement several times with all the mouses isn’t it?
- # - nice! +0His name is arie.
Therefore we obey.
- # - nice! +3It’s not hard to test z-axis tracking. Simply lifting the mouse and putting it down a couple of times will make obvious z-axis problems very visible, especially with a mouse like the Imperator or the Mamba.
The point of the jitter tests is not to make the same movements each time, but to draw a straight line up/down or left/right.
- # - nice! +1Sure each line is going to be slightly different, but obvious cases of jitter are going to be very visible, like this: ariekanarie.nl/wordpress/wp-co...
Only £26 on amazon.co.uk at the moment.
- # - nice! +0Just noticed this review:
It’s a small mouse , I don’t recommend it for anyone who is used to a IEM 3.0 size, e.g. ME :)
- The white RUSE version is different to the standard version.
- # - nice! +1- Arx is on his 3rd or 4th mouse due to them breaking before he switched I believe