Intel Core 2 Duo E6550 socket: LGA 775
The Intel Core 2 Duo E6550 uses the LGA 775 socket. It is a 65 W dual-core Conroe desktop part at 2.333 GHz with 4 MB of shared L2 cache on a 1333 MT/s bus.
- Socket
- LGA 775
- Launched
- July 2007
- Cores and threads
- 2 and 2
- Base power
- 65 W
- Codename
- Conroe
- Segment
- Desktop
- Family
- Intel Core 2 Duo
- Clocks
- 2.33 GHz
Intel Core 2 Duo E6550 specifications
| Cores | 2 |
|---|---|
| Threads | 2 |
| Core architecture | Conroe cores on 65 nm |
| Clocks | 2.333 GHz (no turbo) |
| Cache | 4 MB shared L2 |
| Processor base power (TDP) | 65 W |
| Manufacturing process | 65 nm |
| Memory support | DDR2 or DDR3 through the board chipset |
| Front side bus | 1333 MT/s |
| PCI Express | PCIe from the board chipset |
| Integrated graphics | None (board video where fitted) |
| Multiplier | Locked |
| Package | LGA 775 |
Motherboard compatibility
Intel Core 2 Duo E6550 needs a motherboard with a LGA 775 socket. Chipset by chipset data for this codename is not recorded yet. See the LGA 775 chipset list and the board maker's CPU support list.
LGA 775 at a glance
| Type | LGA, 775 contacts |
|---|---|
| Package size | 37.5 × 37.5 mm |
| Introduced | 2004 |
| Memory | DDR, DDR2 or DDR3, depending on the motherboard chipset |
| Cooler mounting holes | 72 × 72 mm |
What the Core 2 Duo E6550 is
The Intel Core 2 Duo E6550 is a 2.333 GHz dual core from July 2007. It runs two Core cores at 2.333 GHz with no turbo, so 2 cores give 2 threads. Cache is 4 MB of shared L2 on a 65 nm process. Power is rated at 65 W on LGA 775.
The E6550 moves Conroe to a 1333 MT/s bus in stepping G0 with a 7x multiplier. It exists because Intel refreshed the mainstream dual core with a faster bus for buyers on newer 3 series chipsets.
Socket and motherboard compatibility
The E6550 drops into LGA 775 boards with DDR2 or DDR3 memory and a BIOS that lists mid-2007 1333 MT/s Conroe parts, such as P35 boards. Older 945 boards without 1333 MT/s support cannot take it. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Memory, PCIe and cooling
Memory is DDR2 or DDR3 through the board chipset in two channels.
A 1333 MT/s front side bus ties the CPU to the chipset. PCIe slots hang off the chipset.
Cooling is any 65 W rated LGA 775 heatsink on the 72.5 × 72.5 mm mount, with Enhanced SpeedStep trimming draw at idle.
Upgrade paths
On LGA 775 the upgrade is the Intel Core 2 Duo E6750 at 2.667 GHz or the Intel Core 2 Duo E6850 at 3.0 GHz on the same 1333 MT/s bus. The Intel Core 2 Duo E6420 at 2.133 GHz is the cheaper 1066 MT/s part. Beyond LGA 775 a move to a newer platform needs a new board and memory.
Frequently asked questions
What socket does the Core 2 Duo E6550 use?
LGA 775, on DDR2 or DDR3 boards with 1333 MT/s support.
How many cores does the Core 2 Duo E6550 have?
Two cores and 2 threads at 2.333 GHz with 4 MB of shared L2 cache.
What memory works with the Core 2 Duo E6550?
DDR2 or DDR3 through the board chipset in two channels.
Sources and verification
Facts last checked against these sources on . Page last edited on .