Genshin Impact Parametric Transformer: Best Items for Maximum Rewards

The Parametric Transformer is one of Genshin Impact's most useful but often overlooked gadgets, allowing players to convert surplus materials into valuable resources. As we move into 2025, knowing which items provide the best results from the Parametric Transformer can significantly boost your resource efficiency in Teyvat.

How to Obtain the Parametric Transformer

Before discussing the best items to use, newer players might need to unlock this gadget first. The Parametric Transformer is obtained by completing the 'Tianqiu Treasure Trail' World Quest, which becomes available once you reach Adventure Rank 31. Speak with Lan at the Adventurer's Guild in Liyue Harbor to begin this quest, which involves following a treasure map, defeating enemies, and digging up Exquisite Chests.

How the Parametric Transformer Works

The Parametric Transformer converts materials you input into various rewards once per week (with a cooldown of 6 days and 22 hours). The process is simple:

1. Place the gadget in the open world

2. Add items totaling 150 quality points

3. Charge it with elemental attacks until it reaches 100%

4. Collect your rewards

Best Items to Use in the Parametric Transformer

Understanding Item Quality Values

First, it's important to understand how the Parametric Transformer values different items:

• Common (Gray) and Uncommon (Green) items: 1 quality point

• Rare (Blue) items: 2 quality points

• Epic (Purple) items: 4 quality points

Most Efficient Materials for Transmutation

Based on extensive testing throughout 2024 and early 2025, these are the current best items to use in your Parametric Transformer:

1. Common Plant Materials

Mint, Sweet Flower, and Berries remain the most efficient choices in 2025. These items:

• Are extremely abundant in the wild

• Have minimal use in crafting

• Provide the same quality value (1) as rarer items

• Can be gathered in large quantities during normal exploration

Pro tip: Keep a dedicated inventory of these items specifically for your weekly Parametric Transformer use.

2. Excess Local Specialties

If you've fully built characters that use specific local specialties, their corresponding materials become excellent transformer fuel:

• Mondstadt: Valberries, Windwheel Asters

• Liyue: Jueyun Chilis, Violetgrass

• Inazuma: Naku Weed, Sea Ganoderma

• Sumeru: Rukkhashava Mushrooms, Padisarah

• Fontaine: Lumidouce Bell, Romaritime Flower

• Natlan: New regional specialties introduced in Version 5.0

3. Monster Drops

Common monster drops like Damaged Masks, Slime Condensate, and Hilichurl Masks are excellent choices for the Parametric Transformer because:

• They accumulate quickly during regular gameplay

• Most veteran players have surplus quantities

• They have limited use once your main characters are built

Materials to AVOID Using

While the Parametric Transformer accepts almost any material, some should be saved for other purposes:

• Crystal Chunks and White Iron Chunks: Better used for crafting enhancement materials

• Character Ascension Gems: These are too valuable and difficult to obtain

• Weekly Boss Materials: These have limited availability and are crucial for talent leveling

• Specialty Dishes: These require cooking effort and ingredients

Reward Optimization Strategies

Recent community testing in early 2025 has confirmed that the type of materials used influences the rewards received. Here's how to target specific rewards:

For Mora and EXP Materials

Use plant materials like fruits, vegetables, and local specialties as your transformer fuel.

For Weapon Enhancement Materials

Use monster drops from hilichurls, slimes, and other common enemies.

For Character and Talent Materials

Use minerals and ores as your primary fuel.

Time-Saving Tips

1. Place near elemental hazards: Position your Parametric Transformer near Electro Crystals or other environmental elemental sources to charge it automatically.

2. Best characters for charging: Catalyst users like Lisa or Barbara can charge the transformer quickly since all their attacks are elemental.

3. Set a weekly reminder: With the 7-day cooldown, setting a reminder ensures you never miss a week of free resources.

Conclusion

The Parametric Transformer remains one of Genshin Impact's most resource-efficient systems in 2025. By using abundant common materials like Mint, Sweet Flowers, and basic monster drops, you can convert otherwise low-value items into essential resources for character and weapon development.

Remember that while the type of materials used does influence the reward categories, the results aren't guaranteed. The most efficient approach is still to use your most abundant low-value materials rather than consuming anything you might need later.

What are your favorite items to use in the Parametric Transformer? Have you found any particularly efficient farming routes for gathering transformer fuel? Share your experiences in the comments below!