Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →The Dimensity 6400 Max leads the Helio G99 in the benchmark results reported by 91mobiles, and its listed peak Cortex-A76 CPU clock is higher. The bigger practical difference is connectivity: the G99 is a 4G platform, while MediaTek documents 5G for the standard Dimensity 6400. Because MediaTek’s official page does not identify that chip as the “6400 Max,” verify the exact phone’s specifications rather than assuming the two names are interchangeable.
Specifications: Helio G99 vs Dimensity 6400 Max
The table combines MediaTek’s official information for the Helio G99 and standard Dimensity 6400 with the 6400 Max details listed by 91mobiles. MediaTek’s official Dimensity page covers the 6400, not the 6400 Max, so Max-specific claims below are attributed to the comparison listing.
As an Amazon Associate I earn from qualifying purchases.
| Specification | Helio G99 | Dimensity 6400 Max |
|---|---|---|
| CPU | 2× Cortex-A76 up to 2.2 GHz; 6× Cortex-A55 up to 2.0 GHz. MediaTek specifications | 2× Cortex-A76 up to 2.5 GHz; 6× Cortex-A55 up to 2.0 GHz. 91mobiles comparison listing |
| Manufacturing process | TSMC N6 / 6 nm class. MediaTek specifications | 6 nm, as listed by 91mobiles. 91mobiles comparison listing |
| Graphics | Mali-G57 MC2. MediaTek specifications | Mali-G57 MC2, as listed by 91mobiles. 91mobiles comparison listing |
| Memory and storage support | LPDDR4X and UFS 2.2. MediaTek specifications | LPDDR4X and UFS 2.2 for the standard Dimensity 6400; the official page does not specifically confirm the Max. MediaTek standard 6400 specifications |
| Mobile network | 4G/LTE platform. MediaTek specifications | 91mobiles presents the Max as the 5G-side option; MediaTek’s official standard 6400 page documents 5G, but does not name the Max. 91mobiles comparison · MediaTek standard 6400 specifications |
| Display and camera capabilities | Platform support up to 120 Hz displays and 108 MP main cameras. MediaTek specifications | Up to 120 Hz Full HD+ AMOLED and up to 108 MP cameras for the standard 6400 platform; these are not guaranteed phone features or Max-specific official claims. MediaTek standard 6400 specifications |
These are platform capabilities, not a promise that a particular handset includes every listed feature. Phone makers choose the actual memory, storage, display, cameras, cooling and other components. A shared 6 nm process label or GPU name also does not establish equal power use or sustained performance.
Benchmark comparison: what the published scores show
91mobiles’ comparison page, accessed in 2026, labels its AnTuTu figures as tested results. It reports the following totals and category scores for the two chips:
#1 Best Overall
- YOUR CONTENT, SUPER SMOOTH: The ultra-clear 6.7" FHD+ Super AMOLED display of Galaxy A17 5G helps bring your content to life, whether you're scrolling through recipes or video chatting with loved ones.¹
- LIVE FAST. CHARGE FASTER: Focus more on the moment and less on your battery percentage with Galaxy A17 5G. Super Fast Charging powers up your battery so you can get back to life sooner.²
- MEMORIES MADE PICTURE PERFECT: Capture every angle in stunning clarity, from wide family photos to close-ups of friends, with the triple-lens camera on Galaxy A17 5G.
- NEED MORE STORAGE? WE HAVE YOU COVERED: With an improved 2TB of expandable storage, Galaxy A17 5G makes it easy to keep cherished photos, videos and important files readily accessible whenever you need them.³
- BUILT TO LAST: With an improved IP54 rating, Galaxy A17 5G is even more durable than before.⁴ It’s built to resist splashes and dust and comes with a stronger yet slimmer Gorilla Glass Victus front and Glass Fiber Reinforced Polymer back.
| AnTuTu result | Helio G99 | Dimensity 6400 Max |
|---|---|---|
| Total | 380,698 | 448,625 |
| CPU | 103,329 | 142,456 |
| GPU | 86,021 | 70,692 |
| Memory | 90,352 | 101,408 |
| UX | 100,996 | 134,069 |
In the same 91mobiles comparison, the displayed Geekbench scores are 575 versus 799 for single-core and 1,766 versus 2,049 for multi-core, respectively. The figures favor the Dimensity 6400 Max on the overall AnTuTu total and both displayed Geekbench results, while the listed AnTuTu GPU subscore is higher for the G99. These are results from that comparison, not guaranteed scores for every phone using either chip.
Why you may see different scores elsewhere
NanoReview compares the Helio G99 with the standard Dimensity 6400, not the 6400 Max, and reports AnTuTu 11 results of 554,590 and 581,041, respectively. Its reported samples are 313 for the G99 and 11 for the standard 6400. For Geekbench 6, NanoReview reports single-core scores of 727 and 803, with 82 and 8 samples; its multi-core results are 2,047 for each chip. NanoReview’s comparison uses a different chip label, benchmark version and sample set from the 91mobiles results, so these figures should not be merged into one head-to-head test.
Rank #2
- Carrier: This phone is locked to Tracfone, which means this device can only be used on the Tracfone wireless network. Tracfone plan required, activating is easy, just 3 steps.
- DISPLAY: Immersive viewing on a 6.7-inch super-bright 120Hz display with powerful stereo speakers and Bass Boost for cinematic entertainment.
- CAMERA SYSTEM: Advanced 50MP Quad Pixel camera captures sharp, detailed photos and videos in any lighting condition
- PERFORMANCE: Lightning-fast 5G connectivity paired with a powerful processor and RAM Boost for smooth multitasking.
- BATTERY LIFE: Long-lasting 5000mAh battery with TurboPower charging technology delivers hours of power in minutes.
What the results mean for gaming and everyday use
The listed Dimensity CPU has a higher peak clock for its two Cortex-A76 cores, and the comparison scores favor it in total AnTuTu and both Geekbench results. That supports an advantage in those published tests, not a guarantee of faster performance in every app or game. The GPU subscore in the same AnTuTu comparison favors the G99, despite both chips being listed with Mali-G57 MC2 graphics.
Recommended Free Tools
Neither set of scores is a controlled test of two otherwise identical phones. Cooling, software, RAM and storage configuration, and power limits can change how a chip performs, especially during sustained gaming. NanoReview’s listed gaming averages are for a Cubot X70 on the G99 side and do not include a corresponding Dimensity 6400 result; they are not a direct gaming comparison. NanoReview also cautions that gaming FPS can vary with the game version, operating system and other factors.
Rank #3
- YOUR CONTENT, SUPER SMOOTH: The ultra-clear 6.7" FHD+ Super AMOLED display of Galaxy A17 5G helps bring your content to life, whether you're scrolling through recipes or video chatting with loved ones.¹
- LIVE FAST. CHARGE FASTER: Focus more on the moment and less on your battery percentage with Galaxy A17 5G. Super Fast Charging powers up your battery so you can get back to life sooner.²
- MEMORIES MADE PICTURE PERFECT: Capture every angle in stunning clarity, from wide family photos to close-ups of friends, with the triple-lens camera on Galaxy A17 5G.
- NEED MORE STORAGE? WE HAVE YOU COVERED: With an improved 2TB of expandable storage, Galaxy A17 5G makes it easy to keep cherished photos, videos and important files readily accessible whenever you need them.³
- BUILT TO LAST: With an improved IP54 rating, Galaxy A17 5G is even more durable than before.⁴ It’s built to resist splashes and dust and comes with a stronger yet slimmer Gorilla Glass Victus front and Glass Fiber Reinforced Polymer back.
5G is the clearest practical difference
The Helio G99 is a 4G/LTE platform. MediaTek’s official page for the standard Dimensity 6400 documents a 3GPP Release 16-compliant 5G modem; that statement applies to the standard 6400 page, which does not mention the “Max” name. The comparison listing presents the 6400 Max as the 5G-side option, but the official material available here does not establish that the Max and standard 6400 are identical.
If 5G matters, check the exact phone model and regional variant for supported bands and carrier compatibility. A chipset’s network capability alone does not confirm that every phone using it supports the bands available where you live.
Rank #4
- PRIVACY DISPLAY: Automatically hide your screen from those beside you. The built-in privacy display can be preset¹ to turn on when receiving notifications, typing passwords, or using specific apps
- TYPE IT IN. TRANSFORM IT FAST: Enhance any shot in seconds on your smartphone by using Photo Assist² with Galaxy AI.³ Add objects, restore details, or apply new styles by simply typing or tapping
- NIGHTS, CAPTURED CLEARLY: From gigs to city lights, record and capture moments after dark with clarity using Nightography so your photos and videos stay crisp and clear on your Samsung Galaxy
- MAKE IT. EDIT IT. SHARE IT: Turn everyday moments into something personal with creative tools built right into your mobile phone, whether it’s a special contact photo, custom wallpaper, an invitation or more⁴
- HELP THAT KEEPS UP: Stay in the moment while Now Nudge with Galaxy AI helps you respond faster and stay organized with smart suggestions⁵ that appear exactly when you need them on your phone
How to choose between phones using these chips
Choose based on the complete handset, not the processor name alone. 91mobiles lists the realme 15T and realme Narzo 90 as examples of Dimensity 6400 Max phones, and the Samsung Galaxy A07, F07, M07 4G, A18 4G and A08 4G as examples of Helio G99 phones. This is not an exhaustive or globally current roster; availability and regional specifications can change. See the listing.
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →- Network: Confirm the exact model’s 4G or 5G support, regional variant and network bands.
- Memory and storage: Compare the phone’s actual RAM and storage configuration, not only the platform support listed for the chip.
- Display and battery: Check the panel, refresh rate and battery capacity on the handset. Platform maximums do not guarantee those features.
- Gaming: Look for results from the exact phone and games you care about. The chip comparison alone does not establish sustained frame rates or thermal behavior.
- Software and price: Compare the manufacturer’s support commitment, current price and availability for the specific market.
- Camera hardware: Assess the actual sensors and phone implementation rather than relying on the platform’s maximum supported resolution.
Verdict
The Dimensity 6400 Max is ahead in the cited 91mobiles total AnTuTu result and its displayed Geekbench single-core and multi-core scores, and its listed peak Cortex-A76 clock is higher. The Helio G99 remains a 4G option with the same listed GPU family and a higher GPU subscore in that AnTuTu comparison. For a buyer, the 5G distinction may matter more than a benchmark gap—but confirm the exact handset’s network bands and specifications, and treat “6400 Max” as a label that the official standard 6400 page does not independently verify.
Quick Recap
Best Value
- Carrier: This phone is locked to Tracfone, which means this device can only be used on the Tracfone wireless network. Activating is easy, just 3 steps.
- ACTIVATION Promotion: Includes 1500 min, 1500 texts & 1500 MB Data + add more as you need it
- CAMERA SYSTEM: 50MP Quad Pixel camera. Capture sharper, more vibrant photos day or night with 4x the light sensitivity.
- PERFORMANCE: Blazing-fast Qualcomm performance. Get the speed you need for great entertainment with a Snapdragon 680 processor and 4GB of RAM.
- 64GB built-in storage. Get plenty of room for photos, movies, songs, and apps. Made for US
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
