AMD Phenom II X6 1055T (125W) socket: Socket AM3
The AMD Phenom II X6 1055T (125W) uses the Socket AM3 socket. It is a 125 W six core Thuban desktop part from 2.8 GHz to 3.3 GHz with Turbo Core and 6 MB of L3 cache.
- Socket
- Socket AM3
- Launched
- April 2010
- Cores and threads
- 6 and 6
- Default TDP
- 125 W
- Codename
- Thuban
- Segment
- Desktop
- Family
- AMD Phenom II X6
- Clocks
- 2.8 / 3.3 GHz
AMD Phenom II X6 1055T (125W) specifications
| Cores | 6 |
|---|---|
| Threads | 6 |
| Core architecture | Thuban cores on 45 nm |
| Clocks | 2.8 GHz base, 3.3 GHz Turbo Core |
| Cache | 3 MB L2 (6 × 512 KB), 6 MB shared L3 |
| Default TDP | 125 W |
| Manufacturing process | 45 nm |
| Memory support | DDR2-1066 and DDR3-1333, two channels |
| PCI Express | PCIe 2.0 from the board chipset |
| Integrated graphics | None (board video where fitted) |
| Multiplier | Locked |
| Package | Socket AM3 (µPGA, 938 pins) |
Motherboard and chipset compatibility
AMD Phenom II X6 1055T (125W) needs a motherboard with a Socket AM3 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| 7 and 8 series | 7-Series, 8-Series | Needs a BIOS update Six core parts boot on 8 series boards natively and on 7 series boards after a BIOS update. Check the board CPU list. |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for Socket AM3.
Socket AM3 at a glance
| Type | PGA, 941 contacts |
|---|---|
| Package size | 40 × 40 mm |
| Introduced | February 2009 |
| Memory | DDR2 up to PC2-8500 and DDR3 up to PC3-10600 |
| Cooler mounting holes | 48 × 96 mm |
What the Phenom II X6 1055T (125W) is
The AMD Phenom II X6 1055T (125W) is a six core Thuban desktop processor that AMD released in April 2010. It runs six K10 cores at 2.8 GHz base with Turbo Core to 3.3 GHz, so 6 cores give 6 threads. Each core carries 512 KB of L2 cache for 3 MB in total, backed by 6 MB of shared L3 cache. Power is rated at 125 W on a 45 nm process.
The 1055T shipped in two power versions with identical clocks. This 125 W version with part HDT55TFBK6DGR was the launch retail version for boards with strong power delivery, while the 95 W version followed in May for efficient towers. Against the 1075T it trails by 200 MHz. The locked multiplier limits tuning to the reference clock.
There is no integrated graphics on this die. Board video comes from 7 and 8 series chipsets where fitted.
Socket and motherboard compatibility
The Phenom II X6 1055T (125W) fits Socket AM3 with 938 pins. Boards need a BIOS that lists Thuban, with native support on 8 series and a 2010 update on 7 series. The 125 W rating needs solid power delivery, so check the board CPU list on value boards.
AM3 chips also fit AM3+ boards. It also boots on AM2+ DDR2 boards after a BIOS update. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules, and the AMD Phenom II X6 1055T (95W) page shows the 95 W version at the same clocks.
Memory, PCIe and cooling
Memory support is DDR2 up to PC2-8500 and DDR3 up to PC3-10600 in two channels. A 2 by 4 GB DDR3-1333 kit suits most 1055T towers.
HyperTransport 3.0 links the CPU to the chipset at 2.0 GHz. PCIe Gen 2 slots hang off the chipset.
Cooling needs a 125 W rated tower on the 48 × 96 mm mount.
Upgrade paths
On Socket AM3 the upgrade is the 1090T or 1100T Black Edition for higher clocks and an unlocked multiplier. The 95 W 1055T is a side move for cooler operation. Beyond AM3, DDR3 carries to AM3+ while DDR4 needs a new platform.
Frequently asked questions
What socket does the Phenom II X6 1055T (125W) use?
Socket AM3, the 938-pin package. This is the 125 W launch version with part HDT55TFBK6DGR.
How many cores does the Phenom II X6 1055T (125W) have?
Six cores and six threads at 2.8 GHz base with Turbo Core to 3.3 GHz, with 512 KB of L2 per core and 6 MB of shared L3 cache.
What memory works with the Phenom II X6 1055T (125W)?
DDR2 up to DDR2-1066 and DDR3 up to DDR3-1333 in two channels.
Sources and verification
- List of AMD Phenom processors (Wikipedia)
- AMD Phenom II X6 family (CPU-Upgrade)
- Socket AM3 (Wikipedia)
Facts last checked against these sources on . Page last edited on .