Intel Mobile Pentium III 650 socket: Socket 495
The Intel Mobile Pentium III 650 uses the Socket 495 socket. It is a 21.5 W single-core Coppermine mobile part at 650 MHz with 256 KB of L2 cache for Socket 495 value laptops.
- Socket
- Socket 495
- Launched
- January 18, 2000
- Cores and threads
- 1 and 1
- Base power
- 21.5 W
- Codename
- Coppermine
- Segment
- Mobile (socketed)
- Family
- Intel Mobile Pentium III
- Clocks
- 0.65 GHz
Intel Mobile Pentium III 650 specifications
| Cores | 1 |
|---|---|
| Threads | 1 |
| Core architecture | Coppermine (P6) |
| Clocks | 650 MHz base, no turbo (500 MHz battery mode) |
| Cache | 32 KB L1, 256 KB full-speed L2 |
| Processor base power (TDP) | 21.5 W |
| Manufacturing process | 180 nm |
| Memory support | SDRAM through the board chipset |
| Front side bus | 100 MHz |
| Package | Socket 495 (micro-PGA2, 495 pins) |
| Multiplier | Locked (6.5x) |
| Integrated graphics | None |
Motherboard compatibility
Intel Mobile Pentium III 650 needs a motherboard with a Socket 495 socket. Chipset by chipset data for this codename is not recorded yet. See the Socket 495 chipset list and the board maker's CPU support list.
Socket 495 at a glance
| Type | PGA, 495 contacts |
|---|---|
| Package size | n/a |
| Introduced | October 1999 |
| Memory | SDRAM through the board chipset |
| Cooler mounting holes | Board specific (vendor heat pipe) |
What the Mobile Pentium III 650 is
The Intel Mobile Pentium III 650 is a 650 MHz single-core mobile processor from January 2000. It runs one P6 Coppermine core at 650 MHz with no turbo, so 1 core gives 1 thread. Cache is 256 KB of full-speed L2 with 32 KB of L1 on a 180 nm process. Power is rated at 21.5 W max in a Socket 495 micro-PGA2 package on a 100 MHz front side bus with a 6.5x multiplier at 1.6 V high and 1.35 V battery mode.
SpeedStep drops the chip to 500 MHz in battery mode, which is why the 650 suited value laptops with long battery claims. Intel sold the Mobile 650 in January 2000. The chip supports MMX, SSE and SpeedStep. A soldered BGA2 counterpart exists; this page covers the socketed package per the socketed-only rule.
Modest mobile clocks with a full cache suit Socket 495 value laptops with SDRAM. The 6.5x half-ratio needs an exact BIOS string. That is why the 650 shipped in budget mobile systems.
Socket and motherboard compatibility
The 650 fits Socket 495 value laptops with Coppermine support. It needs a 495-pin micro-PGA2 board with a 100 MHz bus and a BIOS that lists Mobile Pentium III 650. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Value SDRAM laptops are the natural match. Boards listing the Mobile 650 accept the chip with a 21.5 W pipe.
Memory, PCIe and cooling
Memory is SDRAM through the board chipset, matched to the board slots. The CPU has no memory controller. Value boards commonly run PC100 pairs.
A 100 MHz front side bus ties the CPU to the chipset, while AGP and PCI hang off the chipset. No PCIe lanes originate on the die. Cooling uses the laptop heat pipe for the exact chassis, rated for 21.5 W.
Upgrade paths
On the same socket, a move to a Mobile Pentium III 700 such as Intel Mobile Pentium III 700 keeps the laptop for 50 MHz more. A Mobile Pentium III 600 such as Intel Mobile Pentium III 600 drops 50 MHz.
A move to Pentium III-M needs 512 KB cache support. The Socket 495 page lists the range.
Frequently asked questions
What socket does the Mobile Pentium III 650 use?
Socket 495. It is a 21.5 W Coppermine mobile part at 650 MHz.
What memory does the 650 use?
SDRAM through the board chipset.
What is the upgrade path from the 650?
A Mobile Pentium III 700 for 50 MHz more.
Sources and verification
- Intel Mobile Pentium III types 650 21.5W ThinkWiki
- List of Intel Pentium III processors Mobile 650 (Wikipedia)
- Mobile Intel Processor Package Types (Intel)
Facts last checked against these sources on . Page last edited on .