Updated October 23, 2026
Finding CPUs in Call of Duty: Modern Warfare 4 DMZ can be frustrating when you need several for an FOB upgrade but keep finding the wrong electronic ingredients. Searching random buildings is inefficient, especially when you are carrying valuable equipment and have limited time before extraction.
One useful farming location is Cheonwang Peak Array, where the Data Farm contains searchable SERVER BLADE containers. These can yield CPU ×2, Control Unit ×1, Printed Circuit Boards, and other electronic ingredients. The loot varies, but the location gives you a specific type of container to target.
This guide explains how to reach the Data Farm, search SERVER BLADE containers, find alternative CPU locations, craft Control Units, and decide which ingredients to keep for upgrades.
📋 Table of Contents
- Quick Answer: Where to Find CPUs
- Best CPU Farming Location
- How to Reach the Data Farm
- How to Farm CPUs From SERVER BLADE Containers
- Where to Find Control Units
- Other CPU Farming Locations
- Can You Craft CPUs or Control Units?
- What Are CPUs Used For?
- Best Tips for Solo CPU Farming
- Why Can't I Find Any CPUs?
- Frequently Asked Questions
- Final Tips
Quick Answer: Where to Find CPUs and Control Units
To find CPUs in MW4 DMZ, travel to Cheonwang Peak Array and search the SERVER BLADE containers inside the Data Farm. These containers can provide Rare CPUs, Uncommon Control Units, and other electronic crafting ingredients.
A SERVER BLADE can contain CPU ×2, while another may contain Control Unit ×1. These are possible loot results, not guaranteed rewards.
Follow this route:
- Travel to Cheonwang Peak Array.
- Enter the communications facility.
- Find the staircase leading to the second floor.
- Look for the 데이터 팜 (Data Farm) entrance.
- Search the SERVER BLADE containers along the server racks.
- Collect the ingredients you need.
- Extract safely with your loot.
If you specifically need CPUs, prioritize the server racks rather than spending the entire deployment searching unrelated containers.
Best CPU Farming Location: Cheonwang Peak Array
Cheonwang Peak Array is a useful starting point for CPU farming because its Data Farm contains multiple searchable SERVER BLADE containers.
Instead of relying on a single locked room or one specific loot container, you can search several server racks within the same facility.
The SERVER BLADE loot pool can include:
- CPU: Rare 3D Printer ingredient.
- Control Unit: Uncommon 3D Printer ingredient.
- Printed Circuit Board: Rare electronic crafting ingredient.
- Other electronic materials: Additional ingredients and basic crafting resources.
Not every SERVER BLADE contains the same items. Finding a Printed Circuit Board or Control Unit instead of a CPU does not mean you are searching the wrong area.
Is Cheonwang Peak Array safe for solo players?
The facility contains hostile soldiers, and its interior corridors can become dangerous if you attract multiple enemies.
Before entering, bring enough ammunition, armor, and healing supplies to handle the enemies blocking your route.
You do not need to clear the entire compound just to collect electronic ingredients. Focus on reaching the Data Farm, searching the accessible containers, and leaving once you have secured the materials you need.
How to Reach the Data Farm in Cheonwang Peak Array
The most useful navigation landmarks are the second-floor sign and the Data Farm entrance.
Step 1: Enter the communications facility
Travel to Cheonwang Peak Array and approach the main communications building.
Enter the facility and move through its interior corridors.
Be prepared for hostile soldiers around the compound and inside the building. Your destination is the upper server-room area, so avoid spending unnecessary time searching every ground-floor office.
Step 2: Find the staircase to the second floor
Locate the interior staircase and head upstairs.
Look for the Korean floor indicator:
2층 — Second Floor
This sign confirms that you have reached the second-floor area.
Continue through the accessible upper corridors toward the server rooms.
Step 3: Locate the Data Farm entrance
Look for the sign:
데이터 팜 — Data Farm
This is the main landmark for the CPU farming route.
The Data Farm contains rows of tall server racks, making it easy to distinguish from ordinary offices and storage rooms.
Step 4: Enter the server rack area
Move through the server aisles and approach the racks.
Look for the interaction label SERVER BLADE.
Not every rack is necessarily searchable, so check for the actual container prompt rather than assuming all server equipment contains loot.
Step 5: Collect your ingredients
Search the accessible SERVER BLADE containers and transfer useful ingredients into your backpack.
Prioritize CPUs if you are gathering materials for an FOB upgrade. Control Units and Printed Circuit Boards are also worth collecting when you have enough space.
If your inventory fills up during the run, see our MW4 DMZ Backpack Full guide for ways to free space and manage valuable loot.
Once you have collected the ingredients you need, prepare to extract rather than remaining inside the facility unnecessarily.
How to Farm CPUs From SERVER BLADE Containers
SERVER BLADE containers are the main loot source to target when farming CPUs at Cheonwang Peak Array.
To search one:
- Approach a searchable server rack.
- Look for the SERVER BLADE interaction prompt.
- Open the container using the displayed control.
- Inspect the ingredients inside.
- Transfer the CPU or other needed materials into your backpack.
- Continue checking the remaining accessible server blades.
What can SERVER BLADE containers contain?
These are examples of electronic ingredients that can appear:
| Ingredient | Example Quantity | Rarity |
|---|---|---|
| CPU | ×2 | Rare |
| Control Unit | ×1 | Uncommon |
| Printed Circuit Board | ×1 | Rare |
The quantities shown are possible loot results, not fixed rewards.
A container may provide a different electronic ingredient instead of a CPU.
Are CPUs guaranteed from every SERVER BLADE?
No. CPU drops are not guaranteed from every SERVER BLADE container.
One rack might contain a Printed Circuit Board, while another contains a CPU or Control Unit.
For this reason, check multiple accessible containers instead of relying on one particular rack.
There is no confirmed fixed CPU drop rate that players can use to calculate an exact number of containers required.
Should you collect Printed Circuit Boards too?
Printed Circuit Boards are separate crafting ingredients with their own recipe uses.
If you have enough backpack space, collecting them can be worthwhile for future crafting.
However, if you are specifically farming CPUs and your inventory is nearly full, prioritize the ingredients needed for your next upgrade.
Where to Find Control Units in MW4 DMZ
Control Units are another electronic ingredient used by the 3D Printer.
You can obtain them from SERVER BLADE containers inside Cheonwang Peak Array's Data Farm.
A server blade can contain Control Unit ×1, making the Data Farm useful when you need both CPUs and Control Units during the same deployment.
Other locations worth searching include computers and tech bags in areas containing electronic equipment.
These are additional loot opportunities rather than guaranteed Control Unit spawns.
CPU vs Control Unit: What's the Difference?
Although the two ingredients can appear in similar locations, they have different crafting options.
| Feature | CPU | Control Unit |
|---|---|---|
| Rarity | Rare | Uncommon |
| SERVER BLADE loot | Yes | Yes |
| Other places to search | Server rooms | Computers and tech bags |
| 3D Printer recipe | No listed recipe | Available after an upgrade |
The main difference is that Control Units can be printed after unlocking the required capability, while CPUs currently have no listed printing recipe.
If you need CPUs, focus on finding them through loot and preserving the ones you collect.
Can you get Control Units from Iskra?
Iskra's cache at Cheonwang Peak Array is another possible source of Control Units.
However, reaching the cache involves a dangerous encounter, so it is not necessarily the easiest method for players who only need a few crafting ingredients.
For a normal ingredient run, searching SERVER BLADE containers is a more straightforward starting point.
Other CPU Farming Locations in MW4 DMZ
Cheonwang Peak Array is not the only place worth searching for CPUs.
If you are already operating in another part of the map, the following locations offer additional opportunities to look for electronic ingredients.
Cheonwang Peak Array remains the main route recommended here because its SERVER BLADE containers provide a clearly identifiable loot source.
Netshin Tech Complex
Netshin Tech Complex contains server-room infrastructure and is another recommended area for CPU searches.
Look for server-related loot containers and electronic equipment rather than relying entirely on ordinary supply boxes.
The complex can be dangerous, particularly when stronger enemies are nearby.
If you are playing solo, consider whether your current equipment is suitable before entering.
Deadtown
Deadtown's hillside facade buildings are another area worth checking for CPUs.
This can be a useful alternative if your current deployment already takes you through Deadtown.
Search electronic loot containers in the relevant buildings, but do not expect every container to contain a CPU.
Coin Mining Den
The Coin Mining Den Key Room in Nurigo West is another possible source of CPUs and valuable crafting ingredients.
Access requires the Coin Mining Den Key.
If you already have the key, the room may be worth checking while operating in Nurigo West.
However, its loot should not be treated as a guaranteed CPU reward.
Players without the key can focus on accessible server-room locations instead.
Which CPU farming location should you choose?
For a focused ingredient run, start with Cheonwang Peak Array's Data Farm.
If you are already near Netshin Tech Complex or Deadtown, searching the available electronic containers may be more convenient than crossing the map.
If you have the Coin Mining Den Key, its locked room offers another opportunity to search for valuable ingredients.
The best practical route is the one that lets you search suitable containers and extract without taking unnecessary risks.
Can You Craft CPUs or Control Units?
CPUs and Control Units have different printing options.
Understanding this distinction can save you from searching the 3D Printer for a recipe that is not available.
Can you print CPUs in MW4 DMZ?
CPUs currently have no listed 3D Printer recipe.
If you need CPUs for Gunsmith upgrades, Vendor upgrades, or equipment printing, you must obtain them through loot or other available rewards.
Do not confuse CPU with Control Unit or Printed Circuit Board when checking your ingredients.
How to craft Control Units
Control Units can be printed after unlocking Uncommon Ingredient Printing.
The recipe requires:
| Material | Amount |
|---|---|
| Electronics | 20 |
| Metals | 20 |
Once the printing capability is unlocked, open the 3D Printer and check the available ingredient recipes.
Select Control Unit and confirm that you have the required resources.
If the recipe does not appear, check whether you have unlocked Uncommon Ingredient Printing.
Printing Control Units can be a useful alternative to searching additional loot containers, especially when you already have enough basic crafting resources.
What Are CPUs Used For in MW4 DMZ?
CPUs are valuable because several FOB upgrades and equipment recipes require them.
If you sell every CPU you collect, you may need additional farming runs when you reach these upgrades.
FOB upgrades that require CPUs
Two important upgrades have substantial CPU requirements:
| Upgrade | CPUs Needed |
|---|---|
| Gunsmith Upgrade I | 10 |
| Vendor Item Upgrade I | 10 |
These requirements make CPUs worth saving during FOB progression.
If you are working toward Gunsmith Upgrade I, keeping the CPUs you collect can help you avoid delaying the upgrade.
Gunsmith improvements are also relevant to weapon customization expenses. Our MW4 DMZ Gunsmith Discount and Weapon Build Costs guide explains how attachment fees and discounts affect your builds.
Equipment recipes that use CPUs
CPUs also appear in several equipment and ingredient recipes:
- Combat Drone: 2 CPUs.
- Elite Night Vision Goggles: 3 CPUs.
- Comms Module: 3 CPUs, after unlocking the appropriate printing capability.
This makes CPUs useful even after you have completed your immediate FOB upgrades.
If you are gathering materials for Comms Module printing, see our MW4 DMZ Comms Module Locations and Solo Farming Routes guide for additional places to search.
Should you keep or sell CPUs?
Keep CPUs when you are working toward a recipe or upgrade that requires them.
For example, if your next objective is Gunsmith Upgrade I, you will need 10 CPUs.
Selling those ingredients for immediate cash means you may have to collect them again later.
If you have already secured enough CPUs for your planned upgrades, review any surplus according to your current stash space and cash needs.
Best Tips for Solo CPU Farming
CPU farming is more efficient when you focus on the correct containers and protect the ingredients you collect.
Prepare before entering the facility
Bring enough ammunition, armor, and healing supplies to survive the enemies along your route.
Avoid carrying unnecessary items that leave little space for electronic ingredients.
Search the server racks first
Once you reach the Data Farm, prioritize SERVER BLADE containers.
Ordinary office furniture may contain useful items, but it should not distract you from the containers most relevant to CPU farming.
Check your next crafting requirement
Before deploying, review the recipe or upgrade you are working toward.
If you need 10 CPUs for Gunsmith Upgrade I, you can prioritize CPU stacks instead of filling your backpack with unrelated ingredients.
Avoid unnecessary fights
Clear enemies when necessary to move safely through the building.
However, fighting every soldier in the compound can consume valuable supplies and increase the risk of losing your collected loot.
Extract when you have enough
Once you have collected the ingredients you need, consider leaving.
A successful farming run is not just about finding a CPU. You also need to bring it back safely.
Why Can't I Find Any CPUs?
If you have reached Cheonwang Peak Array but are still struggling to find CPUs, check the following.
Make sure you are searching SERVER BLADE containers
Not every computer or electronic object is a SERVER BLADE.
Look for the actual SERVER BLADE interaction label inside the server rack area.
Confirm you have reached the Data Farm
Use the 2층 second-floor sign and 데이터 팜 entrance sign to confirm your location.
The surrounding offices may contain other loot, but the server rack area is the main target for this route.
Check additional available racks
A SERVER BLADE can contain other ingredients instead of a CPU.
Search the remaining accessible containers before leaving the area.
Do not confuse the ingredient names
CPU, Control Unit, and Printed Circuit Board are different items.
They may appear in similar electronic containers, but they are not interchangeable in crafting recipes.
Try another location if necessary
If you have searched the available containers without finding a CPU, consider another recommended server-room location during a later deployment.
There is no need to remain inside a dangerous facility indefinitely after exhausting the containers you can safely access.
Frequently Asked Questions
Where is the best place to find CPUs in MW4 DMZ?
Cheonwang Peak Array is a useful starting point. Search the SERVER BLADE containers inside its Data Farm for CPUs and other electronic crafting ingredients.
Can SERVER BLADE containers drop CPUs?
Yes. SERVER BLADE containers can contain CPUs, including stacks of two. However, not every container guarantees a CPU.
Where is the Data Farm in Cheonwang Peak Array?
The Data Farm is inside the communications facility. Head toward the second-floor server-room area and look for the 2층 floor indicator and 데이터 팜 entrance sign.
Where can I find Control Units?
Search SERVER BLADE containers at Cheonwang Peak Array. Computers and tech bags are also worth checking, while Iskra's cache offers another possible source.
Can you craft CPUs in MW4 DMZ?
No CPU printing recipe is currently listed. Obtain CPUs from loot sources or other available rewards instead.
How do you craft Control Units?
Unlock Uncommon Ingredient Printing, then use 20 Electronics and 20 Metals to print a Control Unit.
Are CPUs guaranteed from server racks?
No. SERVER BLADE containers can contain different electronic ingredients. Search multiple available containers rather than expecting a guaranteed CPU from one rack.
How many CPUs do you need for Gunsmith Upgrade I?
Gunsmith Upgrade I requires 10 CPUs.
Should I sell CPUs or keep them?
Keep CPUs if you need them for Gunsmith upgrades, Vendor upgrades, or equipment recipes. Consider selling surplus only after checking your upcoming crafting requirements.
Can you farm CPUs solo?
Yes. Solo players can search SERVER BLADE containers, although the facility contains hostile soldiers. Bring suitable supplies, avoid unnecessary combat, and extract once you have collected your target ingredients.
Final Tips
If you need CPUs in Modern Warfare 4 DMZ, start with the Data Farm at Cheonwang Peak Array and search the containers labeled SERVER BLADE.
These containers can provide CPUs, Control Units, Printed Circuit Boards, and other electronic ingredients. The loot varies, so check multiple accessible server racks rather than expecting the same reward every time.
Remember that CPUs currently have no listed printing recipe, while Control Units can be printed after unlocking Uncommon Ingredient Printing.
Before deploying, check your next FOB upgrade or equipment recipe, make enough room in your backpack, and prioritize extracting safely with the ingredients you need.
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