VIA Nano X2 U4300 socket: VIA NanoBGA2
The VIA Nano X2 U4300 uses the VIA NanoBGA2 package. It is a 13 W soldered 40 nm dual core part at 1.2 GHz with burst to 1.467 GHz and cannot be replaced.
- Socket
- VIA NanoBGA2
- Launched
- January 2011
- Cores and threads
- 2 and 2
- Base power
- 13 W
- Codename
- CNC
- Segment
- Mobile (soldered)
- Family
- VIA Nano X2
- Clocks
- 1.2 / 1.47 GHz
VIA Nano X2 U4300 specifications
| Cores | 2 |
|---|---|
| Threads | 2 |
| Core architecture | Isaiah cores on 40 nm |
| Clocks | 1.2 GHz base, 1.467 GHz burst |
| Cache | 2 MB L2 (1 MB per core) |
| Processor base power (TDP) | 13 W |
| Manufacturing process | 40 nm |
| Memory support | DDR2 and DDR3-1333, single channel |
| VIA V4 bus | 1066 MHz to the companion chipset |
| Integrated graphics | None on package (chipset feature) |
| Multiplier | Locked |
| Package | nanoBGA2 (FCBGA, 400 balls, 21 × 21 mm, soldered) |
Motherboard compatibility
VIA Nano X2 U4300 needs a motherboard with a VIA NanoBGA2 socket. Chipset by chipset data for this codename is not recorded yet. See the VIA NanoBGA2 chipset list and the board maker's CPU support list.
VIA NanoBGA2 at a glance
| Type | BGA, 400 contacts |
|---|---|
| Package size | 21.0 × 21.0 mm |
| Introduced | May 2008 |
| Memory | DDR2 through the board chipset |
| Cooler mounting holes | Not applicable (soldered) |
What the Nano X2 U4300 is
VIA Nano X2 U4300 is a dual core CNC mobile processor that VIA released in January 2011 for soldered thin boards. It runs at 1.2 GHz base with burst to 1.467 GHz and has no Hyper-Threading, so 2 cores give 2 threads. Cache is 1 MB of L2 per core. Power is 13 W on 40 nm TSMC silicon with 188 million transistors on a 66 mm2 die.
The U prefix marks ultra low voltage for thin laptops and embedded boxes. Idle power drops to half a watt with Power Saver states. Office documents and browsing run within the 13 W budget.
There is no on-die graphics on this package. Display and I/O hang off the VX900, VN1000 or VX11 companion chipset. Hardware virtualization and PadLock AES ship on die.
Socket and motherboard compatibility
The Nano X2 U4300 solders to VIA NanoBGA2 with 400 balls in a 21 by 21 mm footprint and cannot be moved. It stays pin compatible with Eden, C7 and Nano parts for board reuse. A faster system means a new board.
The processor talks to its companion chipset over the VIA V4 bus at 1066 MHz. Supported chipsets include VX900, VN1000 and VX11. Board manuals decide slot wiring.
Memory, PCIe and cooling
Memory support is DDR2 and DDR3 at up to 1333 MT/s over a single 64 bit channel with about 10.7 GB/s of bandwidth. Single channel operation is a hard limit, so size the memory once. ECC is not offered.
The V4 bus runs at 1066 MHz to the companion chipset. PCIe, display and storage I/O all hang off that chip.
Cooling uses a low profile heatsink under the 13 W envelope. Fanless thin builds are possible with chassis airflow.
Upgrade paths
There is no CPU upgrade path on soldered nanoBGA2. The U4300 cannot be removed, so more speed means a new board. A nearby quad reference on the same package is the L4700 class with 4 cores.
A platform move means a new embedded board on a current package. Keep the old board for control duty after a wipe.
Frequently asked questions
What socket does the VIA Nano X2 U4300 use?
It uses VIA NanoBGA2, a soldered package. The chip cannot be removed.
Does the Nano X2 U4300 have Hyper-Threading?
No. Two cores give 2 threads at 1.2 GHz base.
What memory does the Nano X2 U4300 use?
DDR2 and DDR3-1333 over a single 64 bit channel.
Can the Nano X2 U4300 be upgraded?
No. A faster system means a new board.
Sources and verification
- VIA Nano X2 U4300 Specs (TechPowerUp, CNC, 1.2 GHz, burst 1.467, 13W, Jan 2011)
- VIA Nano X2 launch (TechSpot, dual-core Isaiah, 40nm, Jan 2011)
Facts last checked against these sources on . Page last edited on .