Gigabyte MO27Q2 27" VS Samsung Odyssey OLED G6 27" (G61SD)

Both the Gigabyte MO27Q2 and the Samsung Odyssey OLED G6 share an identical display foundation: a 27″ OLED/AMOLED panel at 2560×1440 resolution, 108 ppi pixel density, a blazing 240Hz refresh rate, and an ultra-fast 0.03ms response time. In practice, this means both monitors deliver the deep blacks, near-infinite contrast, and virtually imperceptible motion blur that OLED technology is known for — making either an excellent choice for fast-paced gaming or detail-oriented creative work. The wide 178° viewing angles in both directions further ensure color accuracy holds up even when viewing off-center.

The one meaningful differentiator in this group is adaptive sync support. The Gigabyte MO27Q2 supports only AMD FreeSync, which limits tear-free variable refresh rate gaming to AMD GPU owners. The Samsung Odyssey OLED G6, by contrast, supports Nvidia G-Sync, G-Sync Compatible, and AMD FreeSync — covering the full spectrum of GPU ecosystems. This matters significantly in practice: if you own or plan to upgrade to an Nvidia GPU, the G6 will deliver a smoother, tear-free experience out of the box, while the MO27Q2 would not officially support it.

Both panels are matte (anti-glare), non-glossy, and non-touch — identical in every other display attribute. The Samsung Odyssey OLED G6 holds a clear edge in this group solely due to its broader adaptive sync compatibility, making it the more future-proof and GPU-agnostic choice. If you are already on an AMD GPU and have no plans to switch, the Gigabyte MO27Q2 is an even match on every other display metric.

As dedicated gaming monitors, both the Gigabyte MO27Q2 and the Samsung Odyssey OLED G6 offer a well-matched ergonomic feature set: tilt, swivel, portrait mode rotation, and VESA mount support are present on both. For a gaming setup, this level of adjustability is genuinely useful — portrait mode in particular benefits multi-monitor configurations or specific productivity workflows, while VESA compatibility means either monitor can be moved to a third-party arm without issue.

Where the two diverge is in physical footprint. The Samsung G6 is notably slimmer at 49.2 mm thick versus the MO27Q2′s 64.2 mm, resulting in a substantially smaller overall volume — 10,648 cm³ compared to 13,964 cm³. That 24% reduction in bulk translates to a cleaner desk presence and potentially easier cable management behind the stand. Width and height are nearly identical, so the slimmer profile is the real differentiator in terms of how each monitor occupies physical space.

On weight, the G6 is marginally heavier at 6,900 g versus 6,700 g for the MO27Q2 — a 200 g difference that is negligible in day-to-day use. Overall, the Samsung Odyssey OLED G6 has a modest edge here thanks to its slimmer chassis, which makes it the more compact and desk-friendly option despite the near-identical ergonomic capabilities of both monitors.

Brightness is identical across both monitors at 250 nits typical, and both support color calibration — so for users who need a dialed-in, accurate color profile, neither has a workflow advantage over the other on those fronts.

The contrast ratio, however, tells a dramatically different story. The Gigabyte MO27Q2 lists a contrast ratio of 1,500:1, while the Samsung Odyssey OLED G6 delivers 1,000,000:1. This gap is not incremental — it is the fundamental difference between a conventional static contrast ratio and true OLED pixel-level black. When an OLED pixel displays black, it simply turns off, producing absolute darkness rather than a dimmed backlight glow. The real-world impact is profound: shadow detail in dark game environments is far more distinct, HDR content appears dramatically more impactful, and overall image depth has a quality that high static contrast LCD panels cannot replicate.

The Samsung Odyssey OLED G6 has a decisive and unambiguous edge in this group. The contrast ratio advantage alone is transformative for image quality, making it the stronger performer for anyone who values visual depth, dark scene clarity, or HDR authenticity — which, given both monitors are positioned as gaming displays, covers the vast majority of their intended use cases.

The video input lineup is essentially identical between the two monitors: both offer dual HDMI 2.1 ports and one DisplayPort 1.4 output, which is a solid and modern set of options for connecting a gaming PC or console. HDMI 2.1 in particular is capable of handling the full 2560×1440 at 240Hz bandwidth these panels demand, so neither monitor creates a bottleneck on the signal side.

The meaningful difference in this group comes down to USB connectivity. The Gigabyte MO27Q2 includes 4 USB ports and crucially features a USB Type-C port, while the Samsung Odyssey OLED G6 offers only 3 USB ports with no USB-C. For users with modern peripherals — laptops, controllers, audio interfaces, or storage devices that use USB-C — the MO27Q2′s inclusion of that port adds genuine day-to-day convenience directly from the monitor hub, eliminating the need for a separate adapter or dock.

The Gigabyte MO27Q2 takes a clear edge in connectivity. The shared video inputs keep both monitors on equal footing for display purposes, but the extra USB port and the presence of USB-C give the MO27Q2 a more versatile and future-ready peripheral hub — a practical advantage for anyone who routinely works with USB-C devices.

Standby power consumption is identical at 0.5W for both monitors, so there is no difference when either display is idle. Under active use, however, the gap is notable: the Gigabyte MO27Q2 draws 41W while the Samsung Odyssey OLED G6 consumes just 28W — a 32% reduction in operating power draw.

For a monitor that may run many hours a day, that difference adds up. At typical gaming or work usage of 8 hours daily, the G6 would consume roughly 82 kWh less per year than the MO27Q2 — a tangible saving on electricity costs over time, and a meaningful advantage for users who are conscious of energy efficiency or running costs. It also suggests the G6 generates less heat during operation, which can contribute to a slightly cooler immediate desk environment.

The Samsung Odyssey OLED G6 holds a clear edge in this group. With identical standby draw but significantly lower active power consumption, it is the more energy-efficient choice — delivering the same 27″ OLED gaming experience at a meaningfully reduced operating cost.

Strip away the shared absences — no smart TV, no remote, no audio formats, no ambient sensor — and this group comes down to a direct trade-off between two features: the Gigabyte MO27Q2 includes stereo speakers but lacks Picture-in-Picture, while the Samsung Odyssey OLED G6 supports PiP but has no built-in speakers.

The practical weight of each depends entirely on the user's workflow. Built-in stereo speakers on the MO27Q2 offer a convenient audio output without requiring a separate peripheral — useful for casual use, video calls, or setups where desk space is at a premium. PiP on the G6, meanwhile, allows two signal sources to be displayed simultaneously on the same screen, which is genuinely valuable for users who want to monitor a secondary device — a console feed, a chat window from a second PC, or a streaming source — without a second monitor. For multi-source power users, PiP is the more functionally distinctive feature.

This group is a direct trade-off with no overall winner — the right choice depends on individual needs. The MO27Q2 is the better fit for users who want integrated audio, while the Samsung Odyssey OLED G6 suits those who prioritize multi-source flexibility. Neither feature is universally more valuable than the other.