No Firmware Update Can Give the First RAPID the PRO X2 RAPID’s 8 kHz Polling

No Firmware Update Can Give the First RAPID the PRO X2 RAPID’s 8 kHz Polling

Owners of Logitech’s first magnetic keyboard, the PRO X TKL RAPID, are asking whether a G HUB update could give their board the new PRO X2 RAPID’s 8,000 Hz polling. It cannot. Logitech’s own specification sheet lists the first RAPID on a USB Full speed connection with a 1 ms report rate, which caps it at 1,000 reports a second. Logitech announced the PRO X2 RAPID on September 23, and its US store lists it in stock at $229.99 while the older board sells for $189.99. For a buyer, the polling is the smallest part of that $40 gap.

Why the old board stops at 1,000 Hz

A USB Full speed link, the 12 Mbps mode in the first RAPID’s spec sheet, carries data in frames that start once every millisecond. A keyboard on it can report once per frame at most, hence the report rate in the spec sheet. Reporting 8,000 times a second needs the 125-microsecond slots of High speed USB, a different mode of the controller inside the keyboard. Firmware can change how a keyboard uses its connection. It cannot change which USB mode its controller supports.

The PRO X2 RAPID scans its switches and reports to the PC at 8 kHz, according to Logitech’s store page. The worst-case wait between a key press and the next report drops to an eighth of the old figure.

In a game running at 240 frames a second, each frame lasts about 4.2 ms. The polling change saves under 0.9 ms at best, less than a quarter of a frame, and only when a press happens to land just after a report. It is the least visible upgrade on the new board.

What the $40 buys that you will notice

The OLED screen does the most. It lets you change Rapid Trigger, actuation points, Key Priority and lighting on the keyboard itself, without opening G HUB. The first RAPID already stores three profiles on board, so your settings travel to a tournament or office PC either way. The difference is being able to change them once you get there.

Actuation is finer as well. Both boards set the actuation point per key between 0.1 mm and 4 mm, but the X2 moves in 0.05 mm steps where the first RAPID used 0.1 mm steps. That is 79 positions instead of 40. The switches are Logitech’s new factory-lubed KS-20 magnetic switches, rated at 30 g of force against the 35 g of the originals, so each key needs a slightly lighter push.

Diagram comparing the USB report timing of the PRO X TKL RAPID at 1,000 Hz and the PRO X2 RAPID at 8,000 Hz against one 240 fps game frame, with the actuation step counts of each board.

Smaller changes fill out the box. The Space, Enter and Shift keys get screw-in stabilizers, an XL silicone palm rest comes included, and there are spare keycaps for four keys plus a combined switch and keycap puller. The X2 measures 363 by 143 mm, a little wider and shallower than the 357 by 150 mm of the first RAPID, at the same 38 mm height.

The competitive settings are all still there. On the X2, Key Priority, which decides what happens when you hold opposing keys such as A and D together, can favor the last key pressed, the key pushed furthest, or one key you give absolute priority. Keycontrol macros, per-key lighting, the Game Mode button and the double-shot PBT keycaps return from the first board.

The older board costs more than it did at launch

Logitech announced the PRO X TKL RAPID in September 2024 and sold it from December at $169.99. Logitech’s store now lists it at $189.99, $20 above that launch price. The new model’s $229.99 is $60 above the first RAPID’s launch price and only $40 above what the older board costs today.

So the first RAPID makes sense below its list price, and retailers have sold it for about $150 in past discounts. At that level it keeps Rapid Trigger, per-key actuation, Key Priority and onboard profiles.

Upgrade or buy new

If you already own a PRO X TKL RAPID, keep it. The polling gain is below a quarter of a frame, and the finer steps divide a range you probably set once. Buyers starting from scratch at list price should take the X2, because the screen and the lighter switches are worth more than $40 to anyone who adjusts settings between games.

Logitech has not published everything yet:

  • the X2’s weight
  • whether its switches can be swapped without soldering, which the included switch puller suggests but the store page does not state
  • whether 8 kHz polling needs a particular USB port or cable on the PC side

Sources

Basis
Research-based: written from the manufacturer’s published information and other public sources. We have not used the products discussed ourselves, and any measurement quoted belongs to its source.

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