Intel Celeron G555 socket: LGA 1155
The Intel Celeron G555 uses the LGA 1155 socket. It is a 65 W dual core Sandy Bridge desktop part at 2.7 GHz.
- Socket
- LGA 1155
- Launched
- September 2012
- Cores and threads
- 2 and 2
- Base power
- 65 W
- Codename
- Sandy Bridge
- Segment
- Desktop
- Family
- Intel Celeron
- Clocks
- 2.7 GHz
Intel Celeron G555 specifications
| Cores | 2 |
|---|---|
| Threads | 2 |
| Core architecture | Sandy Bridge cores on 32 nm |
| Clocks | 2.7 GHz (no turbo) |
| Cache | 2 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 65 W |
| Manufacturing process | 32 nm |
| Memory support | DDR3-1066, two channels, up to 32 GB |
| PCI Express | PCIe 2.0 from the CPU |
| Integrated graphics | Intel HD Graphics (850 MHz to 1000 MHz) |
| Multiplier | Locked |
| Package | FCLGA1155 (37.5 × 37.5 mm) |
Motherboard and chipset compatibility
Intel Celeron G555 needs a motherboard with a LGA 1155 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| 7 series | Z77, Z75, H77, B75, Q77, Q75 | Works out of the box |
| 6 series: H61, H67, P67, Z68 | Z68, P67, H67, H61 | Works out of the box |
| 6 series business: B65, Q65, Q67 | Q67, Q65, B65 | Works out of the box |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 1155.
LGA 1155 at a glance
| Type | LGA, 1,155 contacts |
|---|---|
| Package size | 37.5 × 37.5 mm |
| Introduced | January 2011 |
| Memory | DDR3 |
| Cooler mounting holes | 75 × 75 mm |
What the Celeron G555 is
Intel Celeron G555 is a dual core Sandy Bridge desktop processor that Intel released in September 2012 as a late speed bump for office towers. It runs at a fixed 2.7 GHz with no turbo, which is 100 MHz above the G550 from June. Cache is 2 MB Intel Smart Cache, with 2 threads from two cores. Power is rated at 65 W on a 32 nm process.
Graphics are Intel HD Graphics for 2nd Gen at 850 MHz to 1000 MHz. The block covers office monitors and video without a card. The memory controller takes DDR3 at 1066 MT/s, which fits the low cost H61 and B75 boards of the period.
The 100 MHz step is small but measurable in single thread office tasks that never use turbo. Towers pair it with 4 GB of DDR3 and an SSD for a direct feel. The LGA, PGA and BGA: CPU package types explained guide places this LGA desktop part against mobile PGA and BGA forms.
Socket and motherboard compatibility
The Celeron G555 fits LGA 1155 in FCLGA1155 form. Both 6 series and 7 series boards boot Sandy Bridge directly, so no special BIOS is needed. H61, B75, H77, Z77 and business sets all accept the chip.
At 65 W any desktop LGA 1155 board covers power and cooling. The practical check is display wiring for the HD Graphics block. The Socket vs chipset: what decides whether a CPU works guide covers the chipset split.
Memory, PCIe and cooling
Memory support is DDR3-1066, two channels, up to 32 GB. Two DIMMs help the shared graphics block, though office loads rarely need the full link. ECC is not supported.
PCI Express is revision 2.0 from the CPU on Sandy Bridge. Office builds usually skip a card, since integrated graphics already drive two displays through board outputs.
Cooling is the 65 W stock pattern with push pins on 75 × 75 mm spacing. The fixed 2.7 GHz clock keeps heat predictable in slim towers.
Upgrade paths
On LGA 1155 the Celeron G555 can step to Pentium duals, Core i3 parts with Hyper-Threading, or quad i5 and i7 chips on the same board. Ivy models need a current BIOS, while Sandy models drop in directly. Memory and storage carry over. A slower single core reference is Intel Celeron G465.
A platform move to LGA 1200 or newer needs a new board and DDR4 RAM. Keep the G555 board for office spares where dual Sandy cores still work.
Frequently asked questions
What socket does the Intel Celeron G555 use?
It uses LGA 1155. Both 6 series and 7 series boards boot it directly.
How is the Celeron G555 different from the G550?
Base is 2.7 GHz instead of 2.6 GHz. Cache, power and graphics match.
What memory does the Celeron G555 use?
DDR3-1066, two channels, up to 32 GB. ECC is not supported.
Is the Celeron G555 unlocked?
No. The multiplier is locked.
Sources and verification
Facts last checked against these sources on . Page last edited on .