Intel Celeron 4305U socket: BGA 1528
The Intel Celeron 4305U uses BGA 1528, a soldered package for Whiskey Lake-U thin laptops. The dual core 15 W chip cannot be replaced.
- Socket
- BGA 1528
- Launched
- April 2019
- Cores and threads
- 2 and 2
- Base power
- 15 W
- Codename
- Whiskey Lake-U
- Segment
- Mobile (soldered)
- Family
- Intel Celeron
- Clocks
- 2.2 / 2.2 GHz
Intel Celeron 4305U specifications
| Cores | 2 |
|---|---|
| Threads | 2 |
| Core architecture | Skylake based cores on 14 nm |
| Clocks | 2.2 GHz base, no Turbo Boost (max 2.2 GHz) |
| Cache | 2 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 15 W |
| Configurable TDP | 12.5 W down (800 MHz) |
| Manufacturing process | 14 nm |
| Memory support | DDR4-2133 and LPDDR3-1866, two channels, up to 64 GB |
| PCI Express | 16 lanes from the CPU, PCIe 3.0 |
| Integrated graphics | Intel UHD Graphics for 8th Generation Intel Processors (300 MHz base, up to 900 MHz) |
| Multiplier | Locked |
| ECC memory | Not supported |
| Package | FCBGA1528 (46 by 24 mm, soldered) |
Motherboard compatibility
Intel Celeron 4305U needs a motherboard with a BGA 1528 socket. Chipset by chipset data for this codename is not recorded yet. See the BGA 1528 chipset list and the board maker's CPU support list.
Recommended GPU pairing
| Recommended tier | Entry 1080p laptop (2019 era) |
|---|---|
| Example GPUs | GeForce MX130, GeForce MX150 Laptop |
| Target resolution | 1080p high settings (internal display) |
Two cores with two threads, PCIe 3.0 with 16 lanes, DDR4-2133 memory, and second quarter 2019 launch timing suit entry 1080p laptop graphics from 2019. The GPU cannot be changed in most chassis. A faster external GPU still works through Thunderbolt, but the internal balance shifts with game, settings, and resolution.
This is a rough match for a new build at the stated resolution, not a limit. A faster card still works and helps at higher resolutions or in games that load the GPU more than the CPU. A slower card is fine for lighter games and office use. The exact balance shifts with the game, the settings and the resolution, so no percentage is given.
BGA 1528 at a glance
| Type | BGA, 1,528 contacts |
|---|---|
| Package size | 46 × 24 mm |
| Introduced | August 2018 |
| Memory | DDR4-2133 to DDR4-2666, LPDDR3-1866 and LPDDR3-2133 plus LPDDR4-2933, two channels, up to 64 GB |
| Cooler mounting holes | Not applicable (soldered) |
What the Celeron 4305U is
The Celeron 4305U is a dual core, two thread Whiskey Lake-U laptop processor. It launched in the second quarter of 2019 with a fixed 2.2 GHz clock and no Turbo Boost at 15 W. Two megabytes of Smart Cache back web browsing, documents and classroom apps on low cost thin laptops with long battery targets.
The fixed clock keeps behavior simple for school fleets and kiosks that dislike frequency steps. There is no Hyper-Threading on this Celeron, so each core carries one thread and multitasking stays basic. The 15 W base with a 12.5 W down mode at 800 MHz lets makers tune silent bodies or longer battery designs.
UHD Graphics for 8th Generation Intel Processors with 300 MHz base and up to 900 MHz burst drives the internal panel for study and video. Dell offered the chip in the Latitude 5400 Chromebook beside Core options for managed fleets. The 14 nm die follows Skylake based cores with VT-x and VT-d for virtualized classrooms.
Socket and motherboard compatibility
The 4305U is soldered to BGA 1528 at 46 by 24 mm and cannot be replaced. Laptop boards define memory type, ports and battery policy for the life of the machine. There is no socket and no CPU swap, so core count and graphics tier lock at order time.
School and office lines pair the chip with low cost boards and eMMC or SATA plus NVMe storage. Memory is SODIMM slots on serviceable bodies or soldered LPDDR on thinner ones for lightness. The How to find your CPU socket type guide shows where maker specs list the package line. Chromebook fleets add management licenses for remote policy and classroom control across districts.
BGA 1440 performance boards and LGA desktop boards cannot host the chip. The low power ball map and firmware are unique to BGA 1528 thin designs, and power delivery targets 15 W rather than 45 W. Chargers, docks and batteries follow the thin and light power budget for school carts and travel.
Memory, PCIe and cooling
DDR4-2133 SODIMMs plus LPDDR3-1866 soldered options cover this value SKU, with up to 64 GB in two channels. Classroom builds ship 4 GB or 8 GB with room to grow where slots exist. Dual channel mode helps graphics and video calls on the modest integrated GPU. Classrooms often start at 4 GB and add matching sticks later, since dual channel mode lifts video calls and browser based tests. IT staff keep one spare kit per cart for quick swaps.
Sixteen PCIe 3.0 lanes wire as x4 and x2 combinations for NVMe SSDs and board devices. Thin 4305U designs typically give x4 to a single SSD for fast boot and app loads. Board devices share the rest through maker defined splits for wireless and card readers.
Cooling is a single heat pipe and fan for 15 W, silent at idle and light under class loads. The 12.5 W down mode suits sealed school bodies with limited vents. Service is fan cleaning per maker guide, never a cooler swap like socketed desktops.
Upgrade paths
Soldered BGA leaves no CPU path for the life of the laptop. Memory to 8 GB and a larger SSD are the practical school upgrades that lift boot and tab capacity. Battery service restores travel time between classes when run time fades.
A laptop change to the Pentium Gold Intel Pentium Gold 5405U adds threads in a similar thin body, while a move to Core i5 Whiskey Lake-U adds Turbo Boost. A shift to BGA 1440 performance laptops means a different power class entirely with new chargers.
For fleets, manageability matters more than clock speed at this tier. Keep images lean and browsers patched, since the fixed 2.2 GHz rewards light software stacks over heavy background agents. Standardize one image per model to cut support calls and stretch chassis life across school years.
Frequently asked questions
What socket does the Intel Celeron 4305U use?
It uses BGA 1528 soldered to the thin laptop board. The dual core 15 W chip cannot be replaced.
Does the 4305U have Turbo Boost?
No, it runs at a fixed 2.2 GHz with no Turbo Boost across its two cores and two threads.
What memory fits 4305U laptops?
DDR4-2133 or LPDDR3-1866 in two channels up to 64 GB. ECC is not supported on this value SKU.
When did the 4305U launch?
Second quarter of 2019 with the Whiskey Lake-U value laptop line for schools and offices.
Is the 4305U 14 nm or 10 nm?
Intel lists 14 nm lithography for the 4305U on its specification page, despite occasional 10 nm errors in lists.
Sources and verification
Facts last checked against these sources on . Page last edited on .