AMD Turion X2 RM-77 socket: Socket S1
The AMD Turion X2 RM-77 uses the Socket S1 socket. It is a 35 W dual-core Griffin mobile part at 2.3 GHz with 1 MB of L2 cache, the fastest Turion X2 RM notebook chip.
- Socket
- Socket S1
- Launched
- December 2008
- Cores and threads
- 2 and 2
- Default TDP
- 35 W
- Codename
- Griffin
- Segment
- Mobile (socketed)
- Family
- AMD Turion X2
- Clocks
- 2.3 GHz
AMD Turion X2 RM-77 specifications
| Cores | 2 |
|---|---|
| Threads | 2 |
| Core architecture | Griffin cores on 65 nm |
| Clocks | 2.3 GHz (no turbo) |
| Cache | 1 MB L2 (2x512 KB) |
| Default TDP | 35 W |
| Manufacturing process | 65 nm |
| Memory support | DDR2-800 SO-DIMMs, two channels |
| HyperTransport | 1800 MHz |
| PCI Express | PCIe from the board chipset |
| Integrated graphics | None (board graphics where fitted) |
| Multiplier | Locked |
| Package | Socket S1 (638-pin OPGA) |
Motherboard and chipset compatibility
AMD Turion X2 RM-77 needs a motherboard with a Socket S1 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| Puma (700 series mobile) | M780G | 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 Socket S1.
Socket S1 at a glance
| Type | PGA, 638 contacts |
|---|---|
| Package size | 35.0 × 35.0 mm |
| Introduced | May 2006 |
| Memory | DDR2 SO-DIMMs up to DDR2-800, two channels, no ECC |
| Cooler mounting holes | Board specific (laptop heatsink) |
What the Turion X2 RM-77 is
The AMD Turion X2 RM-77 is the fastest Turion X2 RM notebook chip, a 2.3 GHz mobile dual core from the late-2008 Griffin wave. It runs two Griffin cores at 2.3 GHz with no turbo, so 2 cores give 2 threads. Cache is 512 KB of L2 per core, 1 MB total, on a 65 nm process. Power is rated at 35 W on Socket S1.
The RM-77 tops the mainstream RM line for buyers who wanted the quickest 1 MB-cache Griffin without paying for Turion X2 Ultra cache. Its HyperTransport link runs at 1800 MHz with a dual-channel DDR2-800 controller. Late-wave Griffin dates rest on the task list.
Socket and motherboard compatibility
The RM-77 fits S1g2 Puma notebooks with DDR2 SO-DIMM slots and a BIOS that lists late-2008 Griffin Turion parts. It does not fit S1g1 boards despite the shared 638 pins. Display comes from the notebook board graphics. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Memory, PCIe and cooling
Memory is DDR2-800 SO-DIMMs in two channels through the on-die controller, with no ECC support.
A 1800 MHz HyperTransport link ties the CPU to the mobile chipset. PCIe slots and board graphics hang off the chipset.
Cooling is the notebook vendor heat pipe assembly for the exact chassis, with PowerNow! trimming clocks and voltage on battery.
Upgrade paths
On Socket S1 the RM-77 is the RM ceiling, so the moves are the AMD Turion X2 RM-74 or AMD Turion X2 RM-75 at 2.2 GHz for spares, or the AMD Turion X2 Ultra ZM-84 at 2.3 GHz with double the cache. A swap must stay within the thermal design the chassis was qualified for.
Frequently asked questions
What socket does the Turion X2 RM-77 use?
Socket S1, the 638-pin package in S1g2 Puma notebooks.
How many cores does the Turion X2 RM-77 have?
Two cores and 2 threads at 2.3 GHz with 512 KB of L2 per core.
What memory works with the Turion X2 RM-77?
DDR2-800 SO-DIMMs in two channels, with no ECC support.
Sources and verification
Facts last checked against these sources on . Page last edited on .