Oppo Find X8 Ultra VS Samsung Galaxy S25 Ultra

Both phones are non-folding slabs with full waterproofing, but the rating differs in a meaningful way. The Oppo Find X8 Ultra carries an IP69 certification, which adds protection against high-pressure, high-temperature water jets — a step beyond the IP68 rating on the Samsung Galaxy S25 Ultra, which covers deep submersion but not pressurized spray. For the vast majority of users, IP68 is more than sufficient for rain, splashes, and accidental drops in water; IP69 is genuinely useful only in edge-case scenarios like rinsing the phone under a strong tap or in industrial environments. Still, as a raw spec, the Find X8 Ultra edges ahead here.

Where Samsung reclaims ground is in physical form factor. The Galaxy S25 Ultra is noticeably slimmer at 8.2 mm versus 8.8 mm, lighter at 218 g versus 226 g, and has a smaller overall volume (103.6 cm³ vs 110.2 cm³). An 8-gram difference may sound trivial on paper, but on a device held for hours daily, it translates into a more comfortable, less fatiguing grip. The thinner profile also contributes to a more premium, svelte feel in the hand and in a pocket.

Overall, the Samsung Galaxy S25 Ultra has a practical design edge for everyday use — it is lighter, thinner, and more compact. The Find X8 Ultra counters with a superior IP69 rating, but unless that specific protection level matters to you, the S25 Ultra's more refined dimensions make it the more comfortable device to live with day-to-day.

At a glance, these two displays are remarkably close — both are OLED/AMOLED panels with 1440p resolution, a 120Hz refresh rate, and damage-resistant glass. The sharpness gap is also negligible in practice: 510 ppi on the Find X8 Ultra versus 498 ppi on the S25 Ultra, with both sitting well beyond the threshold where individual pixels are distinguishable to the human eye. Day-to-day, neither panel will look sharper than the other.

The most consequential difference is brightness. The Samsung Galaxy S25 Ultra reaches a 2600 nits typical brightness, versus 1600 nits on the Find X8 Ultra — a gap of over 1000 nits that has a direct real-world impact. In bright outdoor environments, sunlight legibility is substantially better on the S25 Ultra, making it easier to read text, navigate maps, or view photos without shading the screen. The S25 Ultra also includes an Always-On Display, letting users glance at the time or notifications without fully waking the phone — a small but genuinely useful quality-of-life feature absent on the Find X8 Ultra. On the other hand, the Find X8 Ultra supports Dolby Vision, a premium HDR format favored by streaming services like Netflix and Apple TV+, while the S25 Ultra does not — though both support HDR10 and HDR10+, so the gap in HDR coverage is narrow.

Taking the full picture into account, the Samsung Galaxy S25 Ultra holds a clear display advantage. Its dramatically higher brightness is the decisive factor for anyone who frequently uses their phone outdoors, and the Always-On Display adds everyday convenience. The Find X8 Ultra's Dolby Vision support is a meaningful perk for media consumption purists, but it is not enough to offset Samsung's lead in this category.

Both phones are powered by the Qualcomm Snapdragon 8 Elite on a 3nm process with the same Adreno 830 GPU — so the silicon foundation is identical. The architectural differences, however, are real. The Samsung Galaxy S25 Ultra features slightly faster prime CPU cores at 4.47 GHz versus 4.32 GHz on the Find X8 Ultra, and a marginally higher GPU clock of 1200 MHz versus 1100 MHz. Yet despite these spec-sheet advantages, the S25 Ultra trails in every benchmark result provided — suggesting that Samsung's implementation of the chipset is more thermally or power-constrained than Oppo's.

The benchmark gap is most striking in the AnTuTu score: the Oppo Find X8 Ultra posts 2,792,179 against the S25 Ultra's 2,207,809 — a lead of roughly 27%. Geekbench 6 tells a more nuanced story, with the Find X8 Ultra ahead in both single-core (3234 vs 3057) and multi-core (10059 vs 9846), though the margins there are narrower. Alongside this, the Find X8 Ultra ships with 16 GB of RAM compared to the S25 Ultra's 12 GB — a difference that matters most in heavy multitasking scenarios, keeping more apps active in memory and reducing reload times when switching between demanding applications.

The Oppo Find X8 Ultra takes a clear performance edge in this category. More RAM and consistently higher benchmark results — despite running the same chipset — point to a more aggressively tuned implementation. For users pushing the limits with gaming, video editing, or sustained multitasking, the Find X8 Ultra is the stronger performer based on these figures.

The camera philosophies here diverge sharply. The Oppo Find X8 Ultra takes a uniform approach, fielding four 50MP lenses across its quad-camera array — a consistent sensor size that simplifies computational processing across zoom levels. The Samsung Galaxy S25 Ultra leads with a dominant 200MP primary sensor, which enables extreme detail capture and gives Samsung's computational pipeline far more pixel data to work with for cropping, HDR processing, and downsampled shots. That said, Samsung's fourth lens drops to just 10MP, meaning the Oppo's more balanced array may produce more consistent quality across all focal lengths. On optical zoom, the Find X8 Ultra holds a 6x lead over the S25 Ultra's 5x, a modest but real advantage for telephoto reach.

Video recording is another area of meaningful divergence. The Galaxy S25 Ultra tops out at 8K (4320p) at 30fps, while the Find X8 Ultra caps at 4K (2160p) at 60fps. For most users, 4K 60fps is the more practically useful mode — smoother motion, easier to edit — but the S25 Ultra's 8K ceiling gives videographers who need maximum resolution a clear advantage. The S25 Ultra also supports HDR10 recording and has a BSI sensor on its main camera (which improves light capture efficiency), plus manual shutter speed control — all absent on the Find X8 Ultra. The Oppo counters with a significantly higher-resolution 32MP front camera versus Samsung's 12MP selfie shooter, a notable gap for front-facing photography and video calls.

This category does not have a clean overall winner — it depends on shooting priorities. The Samsung Galaxy S25 Ultra has the edge for primary camera resolution, low-light hardware capability, maximum video resolution, and manual control depth. The Oppo Find X8 Ultra wins on telephoto reach and front camera resolution. Users who prioritize the main shooting experience and video will lean Samsung; those who value zoom consistency and selfie quality will find the Oppo more compelling.

Running the same Android 15 base, these two phones share an extensive list of software features — dark mode, dynamic theming, split-screen, Picture-in-Picture, widgets, offline voice recognition, and a full suite of privacy controls among them. For the overwhelming majority of day-to-day software interactions, users of either device will have a functionally identical experience.

The differences, while few, are practical. The Samsung Galaxy S25 Ultra supports cross-site tracking blocking, Wi-Fi password sharing, and focus modes — the latter being a meaningful productivity feature that lets users filter notifications and app access based on context, such as work, sleep, or personal time. Most notably, Samsung's PC mode capability allows the phone to be used as a desktop computing substitute when connected to a display, a feature absent on the Find X8 Ultra. The Oppo Find X8 Ultra lacks all four of these features, with no compensating exclusives present in the provided data.

The Samsung Galaxy S25 Ultra takes a clear, if modest, edge in this category. The shared feature set is vast, so neither phone is lacking in essentials — but Samsung's additions, particularly focus modes and PC mode, offer tangible utility that the Find X8 Ultra simply does not match based on these specs.

Few spec categories produce as lopsided a result as this one. The Oppo Find X8 Ultra packs a 6100 mAh battery against the Samsung Galaxy S25 Ultra's 5000 mAh — a 22% larger cell that, all else being equal, translates directly into meaningfully longer time between charges. For heavy users who frequently push their phone through a full day of intensive use, that extra capacity is a genuine safety net.

The charging story is equally one-sided. The Find X8 Ultra supports 100W wired fast charging, more than double the S25 Ultra's 45W — meaning Oppo's phone can replenish its larger battery in a fraction of the time Samsung's can refill its smaller one. The wireless charging gap is just as stark: 50W versus 15W, and reverse wireless charging comes in at 10W on the Find X8 Ultra compared to just 4.5W on the S25 Ultra. In practical terms, wirelessly topping up accessories like earbuds or a smartwatch is noticeably faster on the Oppo.

The Oppo Find X8 Ultra wins this category comprehensively and without ambiguity. It carries more capacity, charges faster by wire, charges faster wirelessly, and shares power more efficiently in reverse. For anyone who values battery longevity and charging convenience, the Find X8 Ultra holds a dominant advantage here.

Wired audio is off the table for both phones — neither includes a 3.5mm headphone jack — so the comparison comes down entirely to speaker output and wireless audio codec support. On speakers, both deliver stereo sound, and both share a common Bluetooth codec foundation with support for aptX and aptX HD, the latter enabling high-definition wireless audio at up to 24-bit quality with compatible headphones.

The single differentiator in this category is LDAC, which is supported on the Samsung Galaxy S25 Ultra but absent on the Find X8 Ultra. Developed by Sony, LDAC transmits up to three times more data than standard Bluetooth codecs, making it the preferred format for audiophiles using high-resolution wireless headphones — particularly Sony's own lineup. For users who own LDAC-compatible headphones and care about extracting the highest possible wireless audio fidelity, this is a meaningful gap. Neither phone supports aptX Adaptive or aptX Lossless, so the codec ceiling for both otherwise lands at aptX HD.

The Samsung Galaxy S25 Ultra holds a narrow but real edge here solely due to LDAC support. For casual listeners or those using non-LDAC headphones, the two phones are effectively tied. But for audiophiles invested in the LDAC ecosystem, Samsung is the clear choice in this category.

The core connectivity specs are virtually identical: both phones offer 5G, Wi-Fi 7, Bluetooth 5.4, USB 3.2 Type-C, NFC, and matching cellular speeds of 10 Gbps down and 3.5 Gbps up. Dual physical SIM support is standard on both. Where Samsung pulls ahead is in SIM flexibility — the Galaxy S25 Ultra adds dual eSIM support alongside its two physical slots, making it significantly more versatile for frequent travelers or users who juggle personal and work lines digitally. The S25 Ultra also adds Wi-Fi 6E to its Wi-Fi stack, which unlocks the less congested 6GHz band for lower latency and faster speeds in supported environments — a connectivity edge the Find X8 Ultra lacks.

Beyond networking, the hardware extras tell a similar story. The Samsung Galaxy S25 Ultra includes a built-in stylus, a barometer for altitude and weather sensing, and ANT+ support for connecting fitness and sports accessories — none of which are present on the Find X8 Ultra. The Oppo counters with one notable exclusive: an infrared sensor, which lets the phone act as a universal remote for TVs and home appliances — a practical convenience feature Samsung omits.

Overall, the Samsung Galaxy S25 Ultra holds a broader connectivity and features advantage. The stylus, eSIM flexibility, Wi-Fi 6E, barometer, and ANT+ collectively represent more added utility than the Find X8 Ultra's infrared sensor, making Samsung the stronger choice for users who value a wider hardware feature set.

This group presents a complete tie. Both the Oppo Find X8 Ultra and the Samsung Galaxy S25 Ultra share every attribute listed here: both include a video light, and neither features sapphire glass, a curved display, or an e-paper secondary panel. There is no differentiator to analyze — the two phones are identical across all provided miscellaneous specs, and neither holds any advantage in this category.