TCL RM7L and RM9L: what they ship with and what can come off

These two introduce a different backlight at TCL, and with it a headline that is hard to ignore: the 115-inch RM9L claims 16,848 zones and a peak of 9,000 nits, figures that did not exist in a domestic television three years ago. The RM7L, on the same technology, stops at 2,000 nits.

That gap is not a catalogue error, but understanding it means starting with RGB Mini LED.

What RGB Mini LED is, without the wrapping#

A normal Mini LED lights the screen with thousands of white diodes, and the colour comes afterwards, from the liquid crystal filtering that light: to produce a red, the filter throws almost everything else away.

In RGB Mini LED the backlight already emits colour. Each point of light carries its three emitters, red, green and blue, and lights its zone with the colour that zone needs: the chain runs, in TCL's words, "from the RGB chips directly to the screen".

What that buys you:

• More light kept. If it leaves at the right colour, the filter discards less. That is where the high peaks come from.
• Saturated colours that also stay bright. The weak spot of white Mini LED is that a saturated colour loses luminance. Both claim up to 100% of BT.2020.
• A new problem: crosstalk. If one zone emits red and its neighbour blue, the light mixes on the way out; half a page of TCL's site is about micro lenses for exactly that reason.

What it does not buy you: this is not OLED. There is still an LCD in front, with its halo around bright objects on black. It raises the LCD bar; it does not change category.

Why they are no longer called dimming zones#

This is the detail most likely to cause confusion. On these two spec sheets TCL does not talk about dimming zones but about Precise Color Zones. And it is not a translation quirk: on the 65RM7L's own page, the set TCL suggests alongside it, a 65Q7D Pro, is listed with "646 Precise Dimming Zones". Both labels live on the same screen.

The rename is honest: a zone that only turns on and off is not the same as one that also picks a colour. But it leaves a trap: 8,736 colour zones are not 8,736 dimming zones from another brand.

The figures, size by size#

Checked one by one on each model's spec sheet and product page.

RM7L, HVA Pro panel across all four sizes:

• 65": 1,344 zones, 2,000 nits.
• 75": 1,800 zones, 2,000 nits.
• 85": 2,160 zones, 2,000 nits.
• 98": 2,880 zones, 2,000 nits.

Note that brightness does not change with the diagonal: only the zones go up, and in proportion to the size. The 65 and the 98 are the same television at different scale.

RM9L, which plays in another league:

• 85": 8,736 zones, 4,000 nits.
• 98": 11,520 zones, 6,000 nits.
• 115": 16,848 zones, 9,000 nits.

Here everything rises at once: the 85-inch RM9L has four times the zones of the 85-inch RM7L and twice the brightness. These are not two trims of one range, they are two products.

The 9,000 nits, and what they actually measure#

A 9,000-nit peak is a small-window measurement: a bright patch on a dark background, for a few seconds. TCL itself puts an asterisk on the figure pointing at its own labs and warning that it varies with the standard.

It is useful for comparing the flash of a reflection, but it is not the brightness you watch a film at: across a full scene it drops to a fraction.

The panel in the 115-inch is not the one you expect#

This runs against intuition. The 85 and 98-inch RM9L carry a WHVA 2.0 Ultra panel. The 115, the expensive one and the one behind the 9,000-nit headline, is listed with an HVA Pro panel: the same type fitted across the RM7L.

It is not a stray typo: its spec sheet says so, its page highlights repeat it, and a section titled "CSOT HVA Pro Panel Technology" confirms it.

TCL does not publish how the two panels differ beyond the name, so nobody can say which looks better. What can be said is that the largest of the three does not carry the middle one's panel.

The 288 Hz that are not 288 Hz#

The spec sheet declares 144Hz (288 VRR Game Accelerator), and the page is clearer than most: 144 Hz native, with 288 only "when connected to a 288Hz HDMI source", on any of the four ports.

So the panel is a 144 Hz panel, which is already plenty. The big number comes from a line-doubling technique that refreshes twice as often at the cost of vertical resolution (what other series in the same house label as DLG, though here it is not named that way). It is not the television's refresh rate.

What TCL does not publish#

The list repeats generation after generation:

Neither RAM nor storage. In no source. It is the figure that decides how many years the set lasts: when storage fills up, apps stop updating and eventually the television cannot even apply its own update.

Nor the sound power. The RM7L carries an ONKYO 2.1 system and the RM9L Bang & Olufsen, and neither lists a watt.

Nor which port has eARC, though at least all four are HDMI 2.1.

Nor the Android version. They say "Google TV" and that is that.

The memory you can find out yourself, and you should. With ADB connected, df -h /data says how much there is and how much is free, and cat /proc/meminfo | head -1 gives the total.

How to tell whether this page is about your set#

Under Settings → System → About you get the model and the Android version; with ADB, getprop ro.product.model gives the same without menus. The name is identical across Europe: the only thing that changes is the commercial suffix on the EU energy label.

What ships from the factory#

Google's part. The launcher (com.google.android.tvlauncher), the recommendation engine (com.google.android.tvrecommendations), voice search (com.google.android.katniss) and the services (com.google.android.gms).

TCL's part. Its channel apps, ambient mode and the art gallery. The exact names change with firmware, so list your own instead of copying a list off the internet.

Third parties. Netflix, Prime Video, Disney+ and company, by commercial agreement.

What comes off without much thought#

The streaming apps you do not use. On a television whose storage you do not know until you look, each one is space you may need, and if you subscribe tomorrow it reinstalls in two minutes.

The free channel apps that fill the home screen are the second clear case; the art gallery, the third.

What to look at first#

The recommendation engine. Removing it leaves a clean home screen, but it also empties the "continue watching" row, which in a house with several people shows.

And before touching any package, look in the privacy settings at what the television is sharing. Quite a lot can be cut back from there, without ADB.

What not to touch#

Google Play services: the basis of the store, the accounts and a good part of the apps.

The launcher, as long as you have no other one installed and working. A television with no launcher boots to black, and fixing that with only the remote is far harder than having thought about it first.

Anything starting with com.android. you cannot identify: com.android.systemui is the system interface and com.android.settings is the settings app itself.

And the HDMI side: eARC, VRR and the 144 Hz run through there, which is exactly what you paid for.

What you actually notice#

The home screen stops pushing shows from services you do not have and the set answers the remote a little sooner after switching on. What does not change: the zones, the nits, the HDR or the sound. None of that depends on apps.

All of this is reversible#

Packages disabled over ADB come back with one command, and a factory reset leaves the television as it came out of the box. The system is not touched: it is only told not to load something already installed.

If you own one#

What is missing is what TCL does not tell: which port has eARC, how many watts it really puts out, and the output of df -h /data and cat /proc/meminfo. And if you own the 115-inch, whatever its information screen says about the panel: there is an open question there.