50/100Hz and 60/120Hz are common regional labels. They do not by themselves identify the same hardware or limit every operating mode. Check the full regional SKU and screen size.
DLG, native refresh and HDMI are different
DLG trades effective spatial detail for higher refresh. Halving only the vertical dimension of 3840 × 2160 gives 3840 × 1080, not 1920 × 1080. That arithmetic does not establish the actual DLG raster of a particular model.
A 144Hz label may describe a supported fixed input or VRR ceiling. Do not infer either from a marketing name alone, or assume a 100Hz regional label prevents fixed 120Hz operation.
Official regional examples
| Exact model | Official scope |
|---|---|
| AU QA55QN70HAWXXY | 50Hz native, DLG 120Hz; HDMI 1/2/3 accept 4K60. 2K120 VRR requires a compatible PC, Game Mode and the stated 55-inch-or-larger condition; check the effective raster for the mode in the full model documentation. |
| MY QA55QN80FAKXXM | 100Hz label, up to 144Hz and four 4K144 HDMI inputs. |
Sources: Samsung AU QA55QN70HAWXXY · Samsung MY QA55QN80FAKXXM. Match the full size/region code before applying either specification to a purchase.
The real test is the HDMI port
This is the most useful section here. Even if the panel can reach 120Hz, if the HDMI inputs top out at 4K 60Hz then a PS5 or Xbox cannot send it 4K 120. What the panel can do and what the input will accept are two separate questions.
Read the supported input modes in the right-hand column. A console connection limited to 4K60 cannot deliver 4K120, even if a separate display or PC mode carries a higher refresh label.
Plenty of articles tell you to look for "HDMI 2.1". But HDMI 2.1 is a specification version number and does not mean every port reaches 4K 120. The line to read is "HDMI (High Frame Rate)", together with which ports it names. On some sets only one or two of the four are high-bandwidth.
Count inputs for the console, PC and set-top box, including the port occupied by Sound Bar ARC/eARC. Check each port's modes and eARC location on the model you buy.
Which one, by what you actually do
| Use | Check |
|---|---|
| Broadcast/streaming | Actual 24/25/30/50/60fps source handling and cadence. |
| Films | 24p input and even frame repetition; a 120Hz operating mode can repeat 24fps five times. |
| Console/PC | 4K60 is useful; for 4K120/144 check source, exact port, cable, intermediary and VRR mode. |
Compare these models against the input checklist: M75H 43" Mini LED · QN70H 65" Neo QLED · QN70F 55" · S90F 55" · M80H · QN80F · QN85F
Cadence, lag and source frame rate
120 ÷ 24 = 5 permits even repetition. Regional 50/100Hz labels alone do not tell you which 24p operating modes exist. Check how the exact TV handles 24p and 60fps; different TVs are not identical on the same source.
Higher refresh can shorten frame and scanout intervals when the source supplies more frames. Total input lag also depends on processing and Game Mode. VRR addresses synchronisation within its supported range; high refresh alone does not guarantee no tearing.
The four lines to find on a specification sheet
- Refresh Rate — check how the regional specification defines this figure, alongside the panel’s supported operating modes.
- DLG / Motion Xcelerator — a feature name is not a signal specification. Check its effective resolution, input conditions and supported frame rate.
- HDMI (High Frame Rate) — what the inputs will accept, and on which ports. For gaming, read this line, not the first one.
- VRR / FreeSync / G-SYNC — this is what deals with tearing.
Check the required modes individually. Missing a high-refresh feature does not rule out useful 4K60 gaming.
Frequently asked questions
Does DLG 120Hz mean 4K120 input?
No. Samsung’s AU QA55QN70HAWXXY accepts 4K60 on HDMI 1/2/3; its special PC mode has separate conditions. Check the actual supplied SKU.
Is 144Hz always a VRR ceiling?
No. Check native/operating modes, fixed HDMI inputs and VRR separately.
Does higher refresh reduce lag or help films?
It can shorten display intervals and provide even 24p repetition, but source rate, processing and actual modes also matter.
How should I plan HDMI connections?
Read the full SKU's connection diagram; count the ports you need and check the modes on each before planning the setup.
About this article
Start with the source frame rate, then check native/operating refresh, DLG conditions, supported HDMI inputs and VRR separately. This avoids buying a high-number label that does not meet the required signal mode.
For gaming see gaming televisions, for sport see sport televisions, and for the full range see all televisions. Prices and availability are as shown on each product page.
Confirm each SKU's supply version and warranty provider; title wording is insufficient. Elechid TV cover includes three years of on-site inspection and repair labour, with parts quoted separately. Collection-only premises. warranty policy · delivery and installation page
