VIA Nano U2225 socket: VIA NanoBGA2
The VIA Nano U2225 uses the VIA NanoBGA2 socket. It is an 8 W soldered 65 nm single core part at a fixed 1.3 GHz and cannot be replaced.
- Socket
- VIA NanoBGA2
- Launched
- January 2011
- Cores and threads
- 1 and 1
- Base power
- 8 W
- Codename
- CNA
- Segment
- Mobile (soldered)
- Family
- VIA Nano U
- Clocks
- 1.3 GHz
VIA Nano U2225 specifications
| Cores | 1 |
|---|---|
| Threads | 1 |
| Core architecture | Isaiah cores on 65 nm |
| Clocks | 1.3 GHz (no burst) |
| Cache | 1 MB L2 |
| Processor base power (TDP) | 8 W |
| Manufacturing process | 65 nm |
| Memory support | DDR2 and DDR3, single channel |
| VIA V4 bus | 800 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 U2225 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 U2225 is
VIA Nano U2225 is a single core CNA mobile processor that VIA released in January 2011 for soldered thin boards. It runs at a fixed 1.3 GHz with no burst, so 1 core gives 1 thread. Cache is 1 MB of L2. Power is 8 W on 65 nm Fujitsu silicon with 95 million transistors on a 63.3 mm2 die.
The U prefix marks ultra low voltage for mini-notes and embedded boxes. Idle power drops toward 200 mW with Power Saver states. Single window office work and browsing fit the budget.
There is no on-die graphics on this package. Display and I/O hang off the companion chipset over the 800 MHz V4 bus. PadLock AES and virtualization ship on die.
Socket and motherboard compatibility
The Nano U2225 solders to VIA NanoBGA2 with 400 balls in a 21 by 21 mm footprint and cannot be moved. It stays pin compatible with Eden and C7 parts for board reuse. A faster system means a new board.
The processor talks to its companion chipset over the V4 bus. Board manuals decide slot wiring.
Memory, PCIe and cooling
Memory support is DDR2 and DDR3 over a single 64 bit channel. Single channel operation is a hard limit, so size the memory once. ECC is not offered.
The V4 bus runs at 800 MHz to the companion chipset. PCIe, display and storage I/O all hang off that chip.
Cooling uses a low profile heatsink under the 8 W envelope. Fanless thin builds are the norm with chassis airflow.
Upgrade paths
There is no CPU upgrade path on soldered nanoBGA2. The U2225 cannot be removed, so more speed means a new board. A nearby single core reference with burst clocks is the U2250 class at 1.3 to 1.6 GHz.
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 U2225 use?
It uses VIA NanoBGA2, a soldered package. The chip cannot be removed.
How many cores does the Nano U2225 have?
One core gives 1 thread at a fixed 1.3 GHz.
What memory does the Nano U2225 use?
DDR2 and DDR3 over a single 64 bit channel.
Can the Nano U2225 be upgraded?
No. A faster system means a new board.
Sources and verification
- List of VIA Nano microprocessors (Wikipedia, U2225 1.3 GHz 8W nanoBGA2)
- VIA Nano launch (VIA, 65nm, nanoBGA2 21mm, U-series)
Facts last checked against these sources on . Page last edited on .