The CWWK F13, F14, F15, F27 and F28 share the same external Block Chassis, but they are not identical systems. Behind the consistent enclosure design are four different motherboard platforms covering Intel Alder Lake-N, 11th Gen Tiger Lake, 12th and 13th Gen Intel processors, and the newer Intel Core Ultra platform.
The F13, F14 and F15 each use a different motherboard. The F27 and F28 share the same MTL-4L motherboard and the same Core Ultra processor options, but use different network configurations. The F27 retains the motherboard’s four native 2.5GbE ports, while the F28 adds a four-port network expansion card to provide eight RJ45 ports.
This comparison explains how the five models are related and examines their motherboard platforms, processor options, memory standards, storage interfaces, network expansion, cooling accessories and VESA mounting support.
Quick Answer: How Are the CWWK F Series Models Different?
All five models use the CWWK Block Chassis, but their internal hardware and network configurations are different.
| Model | Current Processor Options | RJ45 Ports | Motherboard Platform | Main Difference |
|---|---|---|---|---|
| F13 | N100 / N200 / N305 | 8 | Intel Alder Lake-N | Low-power processor platform |
| F14 | Pentium Gold 8505 / U300E / Core i5-1250P | 8 | Intel 12th and 13th Gen | DDR5 platform with stronger multicore options |
| F15 | Core i3-1115G4 / i5-1135G7 / i7-1185G7 | 8 | Intel 11th Gen Tiger Lake | Mature DDR4-based Intel Core platform |
| F27 | Core Ultra 5 125H / Ultra 7 155H | 4 | MTL-4L Core Ultra | Four native 2.5GbE ports without LAN expansion |
| F28 | Core Ultra 5 125H / Ultra 7 155H | 8 | MTL-4L Core Ultra | Same motherboard as F27 with four additional 2.5GbE ports |
The most important structural difference is that the five commercial models are based on only four motherboards:
- F13 uses an Alder Lake-N motherboard.
- F14 uses a 12th and 13th Gen Intel motherboard.
- F15 uses an 11th Gen Tiger Lake motherboard.
- F27 and F28 share the MTL-4L Core Ultra motherboard.
One Block Chassis, Four Motherboards and Five Configurations
The Block Chassis provides a consistent exterior across the product family. However, using the same enclosure does not mean that the internal motherboards, processors, memory slots, display interfaces or power specifications are identical.
The relationship between the models is:
CWWK Block Chassis
│
├── F13 Motherboard
│ ├── N100
│ ├── N200
│ └── N305
│ └── 8 × RJ45
│
├── F14 Motherboard
│ ├── Pentium Gold 8505
│ ├── Intel Processor U300E
│ └── Core i5-1250P
│ └── 8 × RJ45
│
├── F15 Motherboard
│ ├── Core i3-1115G4
│ ├── Core i5-1135G7
│ └── Core i7-1185G7
│ └── 8 × RJ45
│
└── MTL-4L Motherboard
├── F27
│ └── 4 × RJ45
│
└── F28
└── 8 × RJ45
CW F13 Alder Lake-N Motherboard
The F13 is based on Intel Alder Lake-N processors and is currently available with the Intel N100, N200 and Core i3-N305.
Its motherboard uses one DDR5 SO-DIMM slot and provides four native Intel i226-series 2.5GbE controllers. The current F13 configuration adds another four-port network card through the PCIe expansion interface, creating a total of eight RJ45 ports.
The motherboard also includes an M.2 NVMe slot, SATA connectivity, Mini PCIe, a SIM card interface, GPIO, TPM and COM-related headers. These additional internal interfaces distinguish the F13 platform from a conventional consumer mini PC.
The F13 motherboard manual identifies a physical PCIe x8 slot carrying PCIe 3.0 x4 signals, one DDR5 memory slot and four Intel i226 2.5GbE interfaces. The motherboard layout on page 2 also shows its Mini PCIe, GPIO, SATA power, TPM and Phoenix terminal connections.
F14 12th and 13th Gen Intel Motherboard
The F14 is currently available with:
- Intel Pentium Gold 8505
- Intel Processor U300E
- Intel Core i5-1250P
The F14 combines a newer Intel processor platform with DDR5 memory and PCIe 4.0 x4 NVMe storage. It has four native Intel i226-V 2.5GbE ports and uses a four-port PCIe network card to reach a total of eight RJ45 interfaces.
The Core i5-1250P is the highest-performance option in the current F14 range. Its hybrid architecture combines performance cores and efficient cores, providing substantially more multicore capacity than the Pentium 8505 and U300E options.
The motherboard also provides:
- PCIe x8 physical expansion slot with x4 signals
- HDMI 2.0
- DisplayPort 1.4
- Type-C
- TF card slot
- USB 3.2
- GPIO
- TPM
- F_PANEL
- Phoenix terminal power connection
- DC 12–19V wide-voltage input
- M.2 2280 and 22110 mounting positions
The F14 therefore differs from the F13 and F15 in more than CPU generation. It also introduces a newer storage interface, updated display outputs and a wider power-input range.
F15 11th Gen Intel Core Motherboard
The F15 uses the Intel 11th Gen Tiger Lake platform and is currently available with:
- Intel Core i3-1115G4
- Intel Core i5-1135G7
- Intel Core i7-1185G7
Unlike the DDR5-based F13, F14, F27 and F28, the F15 uses two DDR4 SO-DIMM slots in a dual-channel configuration. It supports DDR4-2400, DDR4-2666 and DDR4-3200 memory.
The motherboard provides four native Intel i226-V 2.5GbE ports. A four-port PCIe network card is added to create the eight-port F15 configuration.
Other platform features include:
- PCIe x8 physical slot with PCIe 3.0 x4 signals
- M.2 NVMe PCIe 3.0 x4
- Two SATA 3.0 interfaces
- HDMI 1.4
- DisplayPort 1.2
- Type-C
- USB 3.0
- COM
- TPM
- F_PANEL
- DC 12V input
The Core i5-1135G7 and Core i7-1185G7 also provide stronger integrated graphics than the entry-level Core i3 configuration when installed with an appropriate dual-channel memory setup.
F27 and F28 MTL-4L Core Ultra Motherboard
The F27 and F28 use the same MTL-4L motherboard and are currently available with:
- Intel Core Ultra 5 125H
- Intel Core Ultra 7 155H
Their processor, memory, storage, display and power platforms are the same. The distinction between the two models is the network expansion configuration.
The shared MTL-4L motherboard provides:
- Four native Intel i226-V 2.5GbE ports
- Two DDR5 SO-DIMM slots
- Up to 96GB of dual-channel DDR5 memory
- PCIe 4.0 x4 NVMe
- PCIe x8 physical expansion slot with PCIe 4.0 x4 signals
- USB4 with up to 40Gbps data transfer
- HDMI 2.0
- DisplayPort 1.4a
- Intel AI Boost NPU
- M.2 E-Key Wi-Fi support
- SATA 3.0
- TF card slot
- DC 12–19V input
- Supported USB-C PD power input
The F27 uses the motherboard’s four native 2.5GbE ports without an additional RJ45 expansion card.
The F28 adds a four-port 2.5GbE PCIe network card, increasing the total number of RJ45 ports from four to eight.
The two models should therefore be understood as two network configurations of the same Core Ultra motherboard platform—not as two different processor or motherboard generations.
F13, F14, F15, F27 and F28 Specification Comparison
| Specification | F13 | F14 | F15 | F27 | F28 |
|---|---|---|---|---|---|
| Chassis | Block Chassis | Block Chassis | Block Chassis | Block Chassis | Block Chassis |
| Motherboard platform | Alder Lake-N | Intel 12th/13th Gen | Intel 11th Gen Tiger Lake | MTL-4L | MTL-4L |
| Current CPUs | N100 / N200 / N305 | Pentium 8505 / U300E / i5-1250P | i3-1115G4 / i5-1135G7 / i7-1185G7 | Ultra 5 125H / Ultra 7 155H | Ultra 5 125H / Ultra 7 155H |
| Memory type | DDR5 | DDR5 | DDR4 | DDR5 | DDR5 |
| Memory slots | 1 | Depends on current motherboard configuration | 2 | 2 | 2 |
| Maximum memory | 32GB | Depends on current configuration | Dual-channel DDR4 | 96GB | 96GB |
| NVMe interface | PCIe 3.0 x1 | PCIe 4.0 x4 | PCIe 3.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 |
| Native 2.5GbE ports | 4 | 4 | 4 | 4 | 4 |
| Additional 2.5GbE ports | 4 | 4 | 4 | None | 4 |
| Total RJ45 ports | 8 | 8 | 8 | 4 | 8 |
| PCIe expansion signal | PCIe 3.0 x4 | x4 signal | PCIe 3.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 |
| USB4 | No | No | No | Yes | Yes |
| NPU | No | No | No | Intel AI Boost | Intel AI Boost |
| Main power input | DC 12V | DC 12–19V | DC 12V | DC 12–19V / supported USB-C PD | DC 12–19V / supported USB-C PD |
Memory capacity, storage support and included accessories may vary according to the selected product configuration. The specification shown on the selected SKU should be checked before ordering.
CPU Platform Differences Across the CWWK F Series
Intel Alder Lake-N Platform in the F13
The F13 uses Intel Alder Lake-N processors designed around efficient CPU cores.
The N100 and N200 provide four cores, while the N305 increases the core count and overall processing capacity. These processors prioritize low power consumption and compact system design rather than the higher multicore performance available from the F14 and Core Ultra platforms.
The F13 remains structurally different from a basic consumer N-series mini PC because it combines the Alder Lake-N processor with eight RJ45 ports, PCIe network expansion, Mini PCIe, SIM and GPIO connectivity.
Intel 11th Gen Tiger Lake Platform in the F15
The F15 provides three conventional Intel Core performance levels.
The Core i3-1115G4 uses two cores and four threads. The Core i5-1135G7 and Core i7-1185G7 increase this to four cores and eight threads, while also offering stronger integrated graphics.
The 11th Gen platform is older than the F14 and F27/F28 platforms, but it retains a clear distinction through its dual-channel DDR4 memory, PCIe 3.0 x4 NVMe interface and mature Tiger Lake architecture.
Intel 12th and 13th Gen Platform in the F14
The F14 covers a wider performance range than the F13 and F15.
The Pentium Gold 8505 and Intel Processor U300E provide five cores and six threads. The Core i5-1250P increases this to 12 cores and 16 threads, creating a substantial difference in multicore capacity within the same F14 family.
The F14 also combines its processor options with DDR5 memory, PCIe 4.0 NVMe and updated display interfaces.
The current Core i5 option is the Core i5-1250P, not the Core i5-1240P.
Intel Core Ultra Platform in the F27 and F28
The F27 and F28 use Intel Core Ultra processors that integrate CPU cores, Intel Arc-class graphics and an Intel AI Boost NPU.
The NPU can process supported AI tasks separately from the CPU and integrated GPU, improving the platform’s ability to handle compatible AI-assisted workloads. It does not replace a high-performance discrete GPU, but it adds a hardware capability not available in the F13, F14 or F15.
Because the F27 and F28 use the same processor and motherboard options, they provide the same basic computing platform. Their difference is the number of installed network ports.
Memory, NVMe and Storage Differences
DDR4 and DDR5 Memory Platforms
The F15 is the only model in this comparison that uses DDR4 memory. Its two SO-DIMM slots support a dual-channel configuration.
The F13 uses a single DDR5 SO-DIMM slot with support for up to 32GB. The F14 also uses DDR5, but its exact memory capacity should be checked against the selected configuration.
The F27 and F28 provide the largest clearly defined memory capacity in the group. Their MTL-4L motherboard uses two DDR5 SO-DIMM slots and supports up to 96GB.
Using the same Block Chassis does not make the memory modules interchangeable. DDR4 and DDR5 use different electrical and physical standards.
NVMe Interface and Bandwidth
The four motherboard platforms use different NVMe connections:
- F13: PCIe 3.0 x1
- F15: PCIe 3.0 x4
- F14: PCIe 4.0 x4
- F27 and F28: PCIe 4.0 x4
The F13 provides less theoretical NVMe bandwidth because its M.2 connection uses one PCIe lane.
The F14, F27 and F28 provide PCIe 4.0 x4 connections, while the F15 uses PCIe 3.0 x4. Actual SSD performance will also depend on the installed drive, BIOS configuration, workload and SSD temperature.
SATA and Additional Storage Support
The motherboard platforms also differ in SATA connector quantity, position and internal power delivery.
The F13 includes SATA data and power-related interfaces. The F15 provides two SATA 3.0 connections. The MTL-4L motherboard used by the F27 and F28 provides one SATA 3.0 connector and a matching SATA power header.
Storage compatibility should be evaluated by checking:
- Available internal space
- SATA data connector position
- SATA power connection
- Drive mounting method
- Cable routing
- SSD or HDD dimensions
- Cooling clearance
A shared enclosure does not mean that every motherboard has the same storage layout.
RJ45 Network Ports and PCIe Expansion
Four Native Intel 2.5GbE Ports
All four motherboard platforms begin with four native 2.5GbE RJ45 interfaces.
These native ports form the foundation of the F Series networking design. The F27 uses this basic four-port layout without an additional LAN expansion card.
The eight-port configurations add a second group of four ports through the motherboard’s PCIe expansion interface.
How the Eight-Port Models Are Created
The F13, F14, F15 and F28 use the following structure:
Four native 2.5GbE ports + four-port PCIe network card = eight RJ45 ports
The additional network card occupies the internal PCIe slot and requires the corresponding rear-panel openings in the Block Chassis.
Although all four models provide eight RJ45 ports, their underlying platforms remain different:
- The F13 uses an Alder Lake-N motherboard.
- The F14 uses a 12th/13th Gen DDR5 motherboard.
- The F15 uses an 11th Gen DDR4 motherboard.
- The F28 uses the Core Ultra MTL-4L motherboard.
The expansion card creates a similar external interface layout, but it does not make the complete systems identical.
F27 vs. F28 Network Configuration
The F27 and F28 have the same motherboard and current processor options.
| Item | F27 | F28 |
|---|---|---|
| Motherboard | MTL-4L | MTL-4L |
| CPU options | Ultra 5 125H / Ultra 7 155H | Ultra 5 125H / Ultra 7 155H |
| Native 2.5GbE ports | 4 | 4 |
| Additional 2.5GbE ports | None | 4 |
| Total RJ45 ports | 4 | 8 |
| PCIe LAN card | Not installed | Four-port 2.5GbE card installed |
The F27 leaves the PCIe slot free from the four-port LAN card, while the F28 uses the slot to increase the physical port count.
The model names therefore describe different network configurations of the same Core Ultra platform.
Cooling Options for the CWWK Block Chassis
Compatible CPU Cooling Fan
The F13, F14, F15, F27 and F28 use the same Block Chassis form factor and can be paired with a compatible cooling fan designed for this enclosure.
Additional airflow can help reduce internal heat accumulation around the motherboard, NVMe SSD and PCIe network expansion card during extended operation.
View the accessory here:
CPU cooling fan for CWWK Block Chassis mini PCs
The fan is an optional accessory unless it is specifically included with the selected configuration.
Before installation, check:
- Fan power connector compatibility
- Motherboard revision
- Bottom-panel mounting holes
- Cable routing
- SSD heatsink height
- Clearance around the PCIe expansion card
- Intended airflow direction
A tall SSD heatsink may reduce the available space for an internal fan. Internal component clearance should therefore be checked before installation.
VESA Mounting Support for the Block Chassis
Flexible Installation with a VESA Bracket
The Block Chassis supports VESA mounting when paired with a compatible mounting bracket.
This allows the mini PC to be installed:
- Behind a monitor
- Under a desk
- On a wall
- Beside a network cabinet
- Inside a compact workspace
- As part of a digital signage installation
VESA mounting can reduce desktop clutter and simplify cable organization. The mounting position should still leave sufficient clearance around the chassis ventilation openings.
The mounting bracket may be optional. Bracket compatibility, hole spacing and package contents should be checked for the selected product configuration.
Final Comparison Summary
The CWWK F13, F14, F15, F27 and F28 use the same Block Chassis, but they are built around four separate motherboard platforms.
The F13 uses Intel N100, N200 or N305 processors and is sold as an eight-port configuration. The F14 uses the Pentium Gold 8505, Intel Processor U300E or Core i5-1250P and combines DDR5 with eight 2.5GbE RJ45 ports. The F15 uses 11th Gen Core processors, dual-channel DDR4 and an eight-port network configuration.
The F27 and F28 share the MTL-4L Core Ultra motherboard, DDR5 memory, PCIe 4.0 NVMe, USB4 and Intel AI Boost NPU. The F27 provides four native 2.5GbE ports, while the F28 adds a four-port PCIe network card to provide eight RJ45 ports.
The five models share an enclosure and accessory ecosystem, but their CPU, memory, storage and network expansion capabilities remain platform-specific.
Frequently Asked Questions
Do F13, F14, F15, F27 and F28 use the same chassis?
Yes. All five models use the CWWK Block Chassis. Their internal motherboards and hardware platforms are different.
Do all five models use the same motherboard?
No. The F13, F14 and F15 each use a different motherboard. The F27 and F28 share the same MTL-4L motherboard.
What is the difference between F27 and F28?
The F27 and F28 use the same motherboard, CPU options, memory platform and storage interface. The F27 has four native 2.5GbE ports, while the F28 adds a four-port 2.5GbE network card for a total of eight RJ45 ports.
Why do F13, F14, F15 and F28 have eight RJ45 ports?
Each combines four native motherboard ports with an additional four-port PCIe network card.
Are the motherboards interchangeable between the Block Chassis models?
The shared enclosure does not automatically make the motherboards interchangeable. Rear-panel openings, connector positions, power input, cooling components, BIOS platform and cable routing can differ.
Can all five models use the Block Chassis cooling fan?
They can be paired with a cooling fan designed for the Block Chassis, but motherboard revision, mounting holes, fan connection and internal clearance should be checked before installation.
Do the F Series Block Chassis models support VESA mounting?
Yes. They support VESA installation when used with a compatible bracket. The bracket may be an optional accessory.
Does the F14 use the Core i5-1240P or Core i5-1250P?
The current F14 configuration uses the Intel Core i5-1250P.
Which processors are currently available for F27 and F28?
The current F27 and F28 configurations include the Intel Core Ultra 5 125H and Intel Core Ultra 7 155H.