Intel A100 socket: BGA 437
The Intel A100 uses the BGA 437 socket. It is a 3 W single-core Stealey soldered part at 600 MHz with 512 KB of L2 cache for mobile internet devices.
- Socket
- BGA 437
- Launched
- June 2007
- Cores and threads
- 1 and 1
- Base power
- 3 W
- Codename
- Stealey
- Segment
- Mobile (soldered)
- Family
- Intel Atom
- Clocks
- 0.6 GHz
Intel A100 specifications
| Cores | 1 |
|---|---|
| Threads | 1 |
| Core architecture | Stealey cores on 90 nm |
| Clocks | 600 MHz (no turbo) |
| Cache | 512 KB L2 |
| Default TDP | 3 W |
| Manufacturing process | 90 nm |
| Memory support | DDR2 through the companion chipset |
| Front side bus | 400 MT/s |
| PCI Express | Expansion hangs off the companion chipset |
| Integrated graphics | None (companion graphics where fitted) |
| Multiplier | Locked |
| Package | BGA 437 (FC-BGA12F) |
| Core voltage | 1.175 V |
Motherboard compatibility
Intel A100 needs a motherboard with a BGA 437 socket. Chipset by chipset data for this codename is not recorded yet. See the BGA 437 chipset list and the board maker's CPU support list.
BGA 437 at a glance
| Type | BGA, 437 contacts |
|---|---|
| Package size | 22 × 22 mm |
| Introduced | March 2009 |
| Memory | DDR2 single channel via the Poulsbo companion |
| Cooler mounting holes | Not applicable (soldered) |
What the A100 is
The Intel A100 is an ultra-low-power 600 MHz mobile single core from June 1, 2007. It runs one Dothan-derived core at 600 MHz with no turbo and no Hyper-Threading, so 1 core gives 1 thread. Cache is 512 KB of L2 over 64 KB of L1 on a 90 nm process with 176 million transistors. Power is rated at 3 W on BGA 437.
The A100 is built on the Stealey B0 stepping at 1.175 V with a locked 6x multiplier on a 400 MT/s bus. It supports only MMX, SSE and SSE2 with no SSE3, and no Intel 64. The die measures 66 mm². It exists because the McCaslin Ultra Mobile Platform needed an x86 chip for MIDs and UMPCs sipping power. The chip is soldered and cannot be replaced.
Socket and motherboard compatibility
The A100 ships soldered on BGA 437 mobile boards with a companion chipset, so there is no socket upgrade and no board swap without replacing the whole device. Display and I/O come from the companion chipset. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Memory, PCIe and cooling
Memory is DDR2 through the companion chipset.
A 400 MT/s front side bus ties the CPU to the companion chipset. Expansion hangs off the chipset.
Cooling is the device maker heat spreader for the 3 W envelope.
Upgrade paths
On BGA 437 there is no CPU upgrade path because the chip is soldered, so a faster device means replacing the whole board. The Intel A110 at 800 MHz is the faster Stealey option for device makers. Silverthorne Intel Atom Z500 parts later replaced Stealey on the Menlow platform.
Frequently asked questions
What socket does the A100 use?
BGA 437, soldered, so it cannot be replaced or upgraded.
How many cores does the A100 have?
One core and 1 thread at 600 MHz with 512 KB of L2 cache.
Can the A100 be replaced?
No, the A100 is soldered on BGA 437 with no socket upgrade path.
Sources and verification
Facts last checked against these sources on . Page last edited on .