Asus ROG Phone 3 Strix vs ROG Phone 5 Ultimate: Which Gaming Beast Reigns Supreme?

The Asus ROG Phone series consistently pushes the boundaries of mobile gaming, but choosing between generations can be tricky. The ROG Phone 3 Strix, now available at lower prices, offers a compelling experience. However, the ROG Phone 5 Ultimate boasts the newer Snapdragon 888 and significantly faster charging. This comparison dissects the key differences to determine which device delivers the best gaming experience for your money.
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🏆 Quick Verdict

For most gamers, the Asus ROG Phone 5 Ultimate is the superior choice. The Snapdragon 888 provides a noticeable performance uplift, and the 65W charging dramatically reduces downtime. While the ROG Phone 3 Strix remains a capable device, the 5 Ultimate’s advancements justify the price premium for serious mobile gamers.

PHONES
Phone Names Asus ROG Phone 3 Strix Asus ROG Phone 5 Ultimate
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 20, 28, 34, 38, 39, 40, 411, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 48, 66, 71
5G bands41, 77, 78, 79 SA/NSA1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78, 79 SA/NSA
SpeedHSPA 42.2/5.76 Mbps, LTE (6CA) Cat18 1200/150 Mbps, 5G 4.0 Gbps DLHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 1400/150 Mbps, 5G 4 Gbps DL
TechnologyGSM / CDMA / HSPA / LTE / 5GGSM / HSPA / LTE / 5G
 CDMA 800 & TD-SCDMA-
Launch
Announced2020, July 22. Released 2020, July 232021, March 10
StatusDiscontinuedAvailable. Released 2021, June 07
Body
BuildGlass front (Gorilla Glass 6), glass back (Gorilla Glass 3), aluminum frameGlass front (Gorilla Glass Victus), glass back (Gorilla Glass 3), aluminum frame
Dimensions171 x 78 x 9.9 mm (6.73 x 3.07 x 0.39 in)172.8 x 77.3 x 10.3 mm (6.80 x 3.04 x 0.41 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight240 g (8.47 oz)238 g (8.40 oz)
 RGB light panel (on the back) Pressure sensitive zones (Gaming triggers)Pressure sensitive zones (Gaming triggers) Touch sensor; ROG Vision monochrome PMOLED display (on the back)
Display
ProtectionCorning Gorilla Glass 6Corning Gorilla Glass Victus
Resolution1080 x 2340 pixels, 19.5:9 ratio (~391 ppi density)1080 x 2448 pixels (~395 ppi density)
Size6.59 inches, 106.6 cm2 (~79.9% screen-to-body ratio)6.78 inches, 109.5 cm2 (~82.0% screen-to-body ratio)
TypeAMOLED, 1B colors, 144Hz, HDR10+, 650 nits (typ)AMOLED, 1B colors, 144Hz, HDR10+, 800 nits (typ), 1200 nits (peak)
Platform
CPUOcta-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55)Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55)
ChipsetQualcomm SM8250 Snapdragon 865 5G (7 nm+)Qualcomm SM8350 Snapdragon 888 5G (5 nm)
GPUAdreno 650Adreno 660
OSAndroid 10, ROG UIAndroid 11, upgradable to Android 13, ROG UI
Memory
Card slotNoNo
Internal128GB 8GB RAM, 128GB 12GB RAM, 256GB 8GB RAM512GB 18GB RAM
 UFS 3.1UFS 3.1
Main Camera
FeaturesLED flash, HDR, panoramaLED flash, HDR, panorama
Triple64 MP, f/1.8, 26mm (wide), 1/1.73", 0.8µm, PDAF 13 MP, f/2.4, 11mm, 125˚ (ultrawide) 5 MP (macro)64 MP, f/1.8, 26mm (wide), 1/1.73", 0.8µm, PDAF 13 MP, f/2.4, 11mm, 125˚ (ultrawide) 5 MP (macro)
Video8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240fps, 720p@480fps; gyro-EIS
Selfie camera
FeaturesPanorama, HDRPanorama, HDR
Single24 MP, f/2.0, 27mm (wide), 0.9µm24 MP, f/2.5, 27mm (wide), 0.9µm
Video1080p@30fps1080p@30fps
Sound
3.5mm jack NoYes
35mm jackNoYes
Loudspeaker Yes, with DTS:X stereo speakers (2 dedicated amplifiers)Yes, with DTS:X stereo speakers (2 dedicated amplifiers)
 24-bit/192kHz audio24-bit/192kHz audio
Comms
Bluetooth5.1, A2DP, LE, aptX HD, aptX Adaptive5.2, A2DP, LE, aptX HD, aptX Adaptive
NFCYesYes
PositioningGPS (L1+L5), GLONASS, BDS, GALILEO, QZSSGPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
RadioNoNo
USBUSB Type-C 3.1 (side), USB Type-C 2.0 (bottom), OTG, accessory connectorUSB Type-C 3.1 (side), USB Type-C 2.0 (bottom), OTG, accessory connector
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (under display, optical), accelerometer, gyro, proximity, compass
Battery
Charging30W wired, PD3.0, QC4 10W reverse wired65W wired, PD3.0, QC5, 70% in 30 min, 100% in 52 min 10W reverse wired
TypeLi-Po 6000 mAhLi-Po 6000 mAh
Misc
ColorsBlack GlareMatte White
ModelsASUS_I003DDZS673KS, ZS673KS-1B063IN, I005DC
PriceAbout 1400 EURAbout 1300 EUR

Asus ROG Phone 3 Strix

  • More affordable price point
  • Slightly more compact design
  • Still a very capable gaming phone

  • Slower charging speed (30W)
  • Less powerful Snapdragon 865 chipset
  • Potentially more thermal throttling

Asus ROG Phone 5 Ultimate

  • Significantly faster 65W charging
  • More powerful Snapdragon 888 chipset
  • Improved thermal efficiency
  • Potentially better camera performance

  • Higher price tag
  • Larger and heavier design

Display Comparison

While both phones feature high refresh rate AMOLED displays, the ROG Phone 5 Ultimate benefits from the more efficient Snapdragon 888, potentially allowing it to sustain peak brightness for longer periods. The ROG Phone 3 Strix’s display is still excellent, but the 5 Ultimate’s panel likely offers slightly improved color accuracy and HDR performance. Bezels are comparable, but the 5 Ultimate’s overall design feels more refined.

Camera Comparison

Both phones prioritize gaming over photography, but the ROG Phone 5 Ultimate likely features a more advanced image processing pipeline leveraging the 888’s ISP. While specific sensor details aren’t provided, the ROG Phone 5 Ultimate’s newer chipset allows for faster image processing and potentially better low-light performance. The ROG Phone 3 Strix’s camera is adequate for casual use, but the 5 Ultimate offers a more refined photographic experience.

Performance

The core difference lies in the chipsets. The ROG Phone 5 Ultimate’s Snapdragon 888 (5nm) represents a significant architectural leap over the ROG Phone 3 Strix’s Snapdragon 865 (7nm+). The 888’s Cortex-X1 prime core delivers a substantial performance boost in CPU-intensive tasks and gaming. The 5nm process also translates to improved thermal efficiency, potentially reducing throttling during extended gaming sessions. While both utilize LPDDR5 RAM, the 888’s improved memory controller further enhances performance. The ROG Phone 5 Ultimate will consistently deliver higher and more stable frame rates in demanding titles.

Battery Life

The ROG Phone 5 Ultimate’s 65W charging is a game-changer, achieving a 70% charge in just 30 minutes and a full charge in 52 minutes. This is a massive improvement over the ROG Phone 3 Strix’s 30W charging. While the ROG Phone 3 Strix’s battery capacity might be comparable, the faster charging of the 5 Ultimate minimizes downtime and keeps you gaming longer. The Snapdragon 888’s efficiency also contributes to better overall battery life, despite potentially higher power draw during peak performance.

Buying Guide

Buy the Asus ROG Phone 3 Strix if you prioritize value and a slightly more manageable size, and are content with good, but not leading-edge, performance. It’s ideal for gamers who enjoy titles at medium to high settings and don’t require the absolute fastest charging speeds. Buy the Asus ROG Phone 5 Ultimate if you demand the best possible gaming performance, fastest charging, and are willing to pay a premium for the latest technology. This is the phone for competitive gamers and those who want to future-proof their mobile gaming experience.

Frequently Asked Questions

❓ Will the ROG Phone 5 Ultimate's Snapdragon 888 overheat during prolonged gaming sessions?
While the Snapdragon 888 is known to run warmer than its predecessor, the ROG Phone 5 Ultimate incorporates advanced cooling solutions, including a vapor chamber and graphite sheets, to mitigate thermal throttling. The 5nm process also contributes to improved efficiency, reducing heat generation compared to the ROG Phone 3 Strix’s 7nm+ Snapdragon 865.
❓ Is the difference in charging speed between 30W and 65W truly noticeable in everyday use?
Absolutely. The ROG Phone 5 Ultimate’s 65W charging is a game-changer. Going from 0% to 70% in just 30 minutes significantly reduces downtime, allowing you to quickly get back to gaming. The ROG Phone 3 Strix’s 30W charging, while adequate, feels considerably slower in comparison.
❓ Does the ROG Phone 5 Ultimate support 90fps or 120fps in popular games like PUBG Mobile or Call of Duty Mobile?
The ROG Phone 5 Ultimate is capable of achieving high frame rates in many popular titles. While specific frame rate support depends on the game’s settings and optimization, the Snapdragon 888 and the phone’s powerful GPU can consistently deliver 90fps or even 120fps in games like PUBG Mobile and Call of Duty Mobile with appropriate graphics settings.