Home / PC H/W Reviews / Input Device Reviews / CM Storm Rapid-i (SGK-4040-GKCM1) Gaming Mechanical Keyboard Review
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CM Storm Rapid-i (SGK-4040-GKCM1) Gaming Mechanical Keyboard Review

  1. Introduction
  2. Packaging and Specification
  3. Closer Look
  4. Key Rollover Check
  5. User Experience and Conclusion
  6. Online Purchase Links
  7. View All


On the front, you get to see the design of the motherboard, along with 5 key features: The key type, Full LED backlit, NKRO, Lighting Management, Activelite.

The rear shows an angled shot of the keyboard and feature highlights in multiple languages. Many first-time buyers would be comfortable if they knew what keys are suited for them, especially if it’s someone who didn’t research about it before buying. If you notice CM Storm QuickFire TK keyboard’s box, they have specified ‘Cherry Red- very low resistance Linear Feedback’. I am also not sure why CM is so shy of not mentioning the warranty period on the box. But for those who are curious, the warranty period is of 2 years.

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The QR-i comes with three reading materials, 1 braided cable with gold-plated connectors on both ends and the keyboard. The end that plugs into the keyboard is a right-angled Micro USB 2.0 connector.

The specifications are as follows:

Model number SGK-4040-GKCL1(Blue switch)
SGK-4040-GKCM1(Brown switch)
SGK-4040-GKCR1(Red switch)
Switch availability may vary on language layout
Key Rollover NKRO (Windows only)
Keycaps ABS, grip coated, removable
Polling Rate 1000 Hz/1ms
Backlight White backlighting, All keys, 5 levels and modes for illumination – Reactive Illumination, User-Preset mode, WASD, “Breathing” mode, and standard fully-backlit mode.
Windows Key Lock Yes
On-board Memory 128k bytes
Media Keys Yes (via F keys)
Interface Micro USB 2.0, full speed
USB cable 1.8m braided, gold plated and removable
Dimensions 35.9(L) *13.8(W) *3.9(H) cm
14.1(L) *5.4(W) *1.5(H) inch
Weight 932 g / 2.05 lbs

This keyboard is noticeably heavier than the TK. This keyboard weighs at 932gms whereas the TK weighs 544gms.

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