Intel Core 2 Duo T9900 socket: Socket P
The Intel Core 2 Duo T9900 uses the Socket P socket. It is a 35 W dual core Penryn mobile part at 3.067 GHz with 6 MB of L2 cache for flagship notebooks.
- Socket
- Socket P
- Launched
- June 2009
- Cores and threads
- 2 and 2
- Base power
- 35 W
- Codename
- Penryn
- Segment
- Mobile (socketed)
- Family
- Intel Core 2 Duo
- Clocks
- 3.07 GHz
Intel Core 2 Duo T9900 specifications
| Cores | 2 |
|---|---|
| Threads | 2 |
| Core architecture | Penryn cores on 45 nm |
| Clocks | 3.067 GHz (no turbo) |
| Front side bus | 1066 MT/s |
| Cache | 6 MB L2 (shared) |
| Processor base power (TDP) | 35 W |
| Manufacturing process | 45 nm |
| Memory support | DDR2 or DDR3, two channels |
| PCI Express | PCIe from the mobile chipset |
| Integrated graphics | None (board chipset graphics) |
| Multiplier | Locked |
| Package | Socket P (mPGA478MN, 478 pins) |
Motherboard and chipset compatibility
Intel Core 2 Duo T9900 needs a motherboard with a Socket P socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| Montevina (4 series mobile) | GM45, PM45 | Works out of the box |
| Santa Rosa (965) | GM965, PM965 | Needs a BIOS update 45 nm Penryn parts boot on Santa Rosa boards that list them, after a BIOS update. |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for Socket P.
Socket P at a glance
| Type | PGA, 478 contacts |
|---|---|
| Package size | 35 × 35 mm |
| Introduced | May 2007 |
| Memory | DDR2 or DDR3, depending on the chipset, two channels |
| Cooler mounting holes | Board specific (laptop heatsink) |
What the Core 2 Duo T9900 is
The Intel Core 2 Duo T9900 is a dual core Penryn mobile processor from June 2009 for flagship notebooks. It runs two Penryn cores at 3.067 GHz with no turbo and no Hyper-Threading, so 2 cores give 2 threads. Cache is 6 MB of shared L2 on a 45 nm process with 410 million transistors. Power is rated at 35 W with a 1066 MT/s front side bus and the SLGEE part.
The T9900 tops the Socket P dual core stack at 3.067 GHz. Listings confirm 6 MB of cache with 1066 MT/s bus at 35 W. Against the P9700 it adds clocks at higher power for thick performance designs.
There is no graphics on the CPU. Display comes from the mobile chipset.
Socket and motherboard compatibility
The Core 2 Duo T9900 fits Socket P with 478 pins. Montevina boards boot it directly with a mid 2009 BIOS.
The Socket vs chipset: what decides whether a CPU works guide covers pairing rules, and the Intel Pentium Dual-Core T4500 page shows a Pentium on the same socket.
Memory, PCIe and cooling
Memory is DDR2 or DDR3 in two channels depending on the chipset.
The 1066 MT/s front side bus links the CPU to the chipset. PCIe slots hang off the chipset.
Cooling uses the notebook vendor heat pipe assembly rated for 35 W.
Upgrade paths
On Socket P there is no faster stock dual core, so the path is a used T9900 or a move to Arrandale. Keep it where two fast threads still cover the work.
Frequently asked questions
What socket does the Core 2 Duo T9900 use?
Socket P, the 478-pin mPGA478MN package.
How many cores does the Core 2 Duo T9900 have?
Two cores and two threads at 3.067 GHz with 6 MB of shared L2 cache.
What memory works with the Core 2 Duo T9900?
DDR2 or DDR3 in two channels depending on the chipset.
Sources and verification
Facts last checked against these sources on . Page last edited on .