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  3. UltraFine 27UP650K vs ViewFinity S6 S27D604U

LG UltraFine 27UP650K vs Samsung ViewFinity S6 S27D604U

What UltraFine 27UP650K does better (5) and where ViewFinity S6 S27D604U wins (3) — every spec side by side.

LG UltraFine 27UP650K
4.0Score
5 advantages≈ $210
vs
Samsung ViewFinity S6 S27D604U
Samsung · 2025ViewFinity S6 S27D604U
5.0Score
3 advantages≈ $210
Higher score
7.6Screen3.9
2.0Design & ergonomics4.9

Why is UltraFine 27UP650K better than ViewFinity S6 S27D604U?

  1. Pixel density163 ppi vs 109 ppi+50%
  2. HDRDisplayHDR 400 vs HDR10
  3. HDMI inputs2 vs 12×
  4. Brightness (typical)400 nits vs 350 nits+14%
  5. Contrast ratio (static)1,200:1 vs 1,000:1+20%

Why is ViewFinity S6 S27D604U better than UltraFine 27UP650K?

  1. Pivot (portrait rotation)No · UltraFine 27UP650K: Yes
  2. SwivelNo · UltraFine 27UP650K: Yes
  3. Refresh rate60 Hz vs 100 Hz+67%
Specifications

Side by side

Display
Screen size27″27″
Resolution3840 × 21602560 × 1440
Resolution class4K UHDQHD / 2.5K
Pixel density163 ppi109 ppi
Aspect ratio16:916:9
Panel typeIPSIPS
Refresh rate60 Hz100 Hz
Brightness (typical)400 nits350 nits
Contrast ratio (static)1,200:11,000:1
Response time5 ms5 ms
Anti-glare / matte screenYesYes
Colour
sRGB coverage—99%
DCI-P3 coverage95%—
Colour depth10 bit—
HDRDisplayHDR 400HDR10
Connectivity
USB-C video input (one cable)—Yes
USB-C charging (Power Delivery)—90 W
KVM switch—Yes
HDMI inputs21
DisplayPort inputs11
USB hub—Yes
Ethernet (RJ45)—Yes
Daisy chain (DP MST)—Yes
Design & ergonomics
Height adjustment—120 mm
Pivot (portrait rotation)NoYes
SwivelNoYes
VESA mount100 × 100 mm100 × 100 mm
Product lineLG UltraFine—
To compare: 0up to 4 models
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