Intel Core 2 Duo E6420 socket: LGA 775
The Intel Core 2 Duo E6420 uses the LGA 775 socket. It is a 65 W dual-core Conroe desktop part at 2.133 GHz with 4 MB of shared L2 cache for mainstream towers.
- Socket
- LGA 775
- Launched
- April 2007
- Cores and threads
- 2 and 2
- Base power
- 65 W
- Codename
- Conroe
- Segment
- Desktop
- Family
- Intel Core 2 Duo
- Clocks
- 2.13 GHz
Intel Core 2 Duo E6420 specifications
| Cores | 2 |
|---|---|
| Threads | 2 |
| Core architecture | Conroe cores on 65 nm |
| Clocks | 2.133 GHz (no turbo) |
| Cache | 4 MB shared L2 |
| Processor base power (TDP) | 65 W |
| Manufacturing process | 65 nm |
| Memory support | DDR2 through the board chipset |
| Front side bus | 1066 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 E6420 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 E6420 is
The Intel Core 2 Duo E6420 is a 2.133 GHz dual core from April 22, 2007. It runs two Core cores at 2.133 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 E6420 refreshes the E6400 clocks with the full 4 MB Conroe cache in stepping B2 with an 8x multiplier on a 1066 MT/s bus. It exists because Intel restored the full cache to the mid-clock Conroe for buyers who ran cache-sensitive work at mainstream prices. Per-model board listings are thinner than on the E6420 family page, resting on the shared Conroe data.
Socket and motherboard compatibility
The E6420 drops into LGA 775 boards with DDR2 memory and a BIOS that lists early-2007 Conroe parts, such as 945 and P35 boards. It pairs with mainstream chipsets contemporary with Conroe. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Memory, PCIe and cooling
Memory is DDR2 through the board chipset in two channels.
A 1066 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 E6550 at 2.333 GHz on a 1333 MT/s bus, or the Intel Core 2 Duo E6320 at 1.866 GHz for a cheaper full-cache 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 E6420 use?
LGA 775, on DDR2 boards with a Core 2-aware BIOS.
How many cores does the Core 2 Duo E6420 have?
Two cores and 2 threads at 2.133 GHz with 4 MB of shared L2 cache.
What memory works with the Core 2 Duo E6420?
DDR2 through the board chipset in two channels.
Sources and verification
Facts last checked against these sources on . Page last edited on .