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ASUS ROG Keris II Ace vs Cooler Master MM731: Comparison
What is the difference between ASUS ROG Keris II Ace and Cooler Master MM731?
They are built to different briefs, and sensor model shows it, ASUS ROG Keris II Ace AimPoint Pro, up to 42,000 DPI against Cooler Master MM731 PixArt PAW3370, up to 19,000 DPI. Add weight to that, 54 g on the ASUS ROG Keris II Ace versus 49 g on the Cooler Master MM731, and the pattern holds. There is a split on shape as well, Symmetrical on the ASUS ROG Keris II Ace versus Symmetrical, honeycomb on the Cooler Master MM731. They differ on switch type too, Optical Push-Pull on the ASUS ROG Keris II Ace versus Optical on the Cooler Master MM731.
Which should you buy, ASUS ROG Keris II Ace or Cooler Master MM731?
Take the ASUS ROG Keris II Ace for competitive esports players who want ROG's flagship 8000Hz sensor at the lowest available weight. This mouse competes directly at the top of the ultralight esports category. It is the wrong buy for buyers who want long battery life at 8000Hz polling. Battery life drops significantly at maximum polling rate; the standard 1000Hz mode is better for all-day sessions. The Cooler Master MM731 suits budget shoppers chasing sub-50g wireless weight and ambidextrous claw and fingertip grip users, though it is not the pick for buyers who dislike honeycomb/vented shells and palm grip users wanting a fuller shell. Our rating of the Cooler Master MM731 (8/10): one of the best value-for-weight wireless mice available; it just lacks the sensor polish of pricier flagships.
Frequently asked questions
Do the ASUS ROG Keris II Ace and Cooler Master MM731 differ on connectivity?
Yes. Connectivity reads Wireless , Wired on the ASUS ROG Keris II Ace versus Wireless , Bluetooth on the Cooler Master MM731.
Is the Grip Type the same on the ASUS ROG Keris II Ace and Cooler Master MM731?
It is. Both are listed at Ambidextrous, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- ASUS ROG Keris II Ace
- ASUS
- Cooler Master MM731
- Cooler Master
Connectivity
- ASUS ROG Keris II Ace
- Wireless (2.4GHz), Wired
- Cooler Master MM731
- Wireless (2.4GHz), Bluetooth
Grip Type
- ASUS ROG Keris II Ace
- Ambidextrous
- Cooler Master MM731
- Ambidextrous
Model
- ASUS ROG Keris II Ace
- ROG Keris II Ace
- Cooler Master MM731
- MM731
Shape
- ASUS ROG Keris II Ace
- Symmetrical
- Cooler Master MM731
- Symmetrical, honeycomb
Sensor Model
- ASUS ROG Keris II Ace
- AimPoint Pro, up to 42,000 DPI
- Cooler Master MM731
- PixArt PAW3370, up to 19,000 DPI
Polling Rate
- ASUS ROG Keris II Ace
- Up to 8000HzBest
- Cooler Master MM731
- 1000 Hz
Weight
- ASUS ROG Keris II Ace
- 54 g-10%
- Cooler Master MM731
- 49 gBest
Battery Life
- ASUS ROG Keris II Ace
- Up to 40 Hours (At 8000Hz)
- Cooler Master MM731
- Up to 70 hoursBest
Switch Type
- ASUS ROG Keris II Ace
- Optical Push-Pull
- Cooler Master MM731
- Optical
Which one should you pick?
Choose ASUS ROG Keris II Ace if you want the higher polling rate (Up to 8000Hz vs 1000 Hz).
Choose Cooler Master MM731 if you want the lower weight (49 g vs 54 g).
Price comparison
| Retailer | ASUS ROG Keris II Ace | Cooler Master MM731 |
|---|---|---|
| Amazon | View on Amazon | View on Amazon |
| Newegg | View on Newegg |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
Cooler Master MM731
8 / 10 Expert Rating
One of the best value-for-weight wireless mice available; it just lacks the sensor polish of pricier flagships.




