Intel Pentium III Xeon 733 5V-12V socket: Slot 2
The Intel Pentium III Xeon 733 5V-12V uses the Slot 2 slot. It is a 23.3 W single-core Cascades server part at 733 MHz with 256 KB of full-speed L2 cache for Slot 2 boards with 5V-12V regulation.
- Socket
- Slot 2
- Launched
- October 25, 1999
- Cores and threads
- 1 and 1
- Base power
- 23.3 W
- Codename
- Cascades
- Segment
- Server
- Family
- Intel Pentium III Xeon
- Clocks
- 0.73 GHz
Intel Pentium III Xeon 733 5V-12V specifications
| Cores | 1 |
|---|---|
| Threads | 1 |
| Core architecture | Cascades (P6) |
| Clocks | 733 MHz base, no turbo |
| Cache | 32 KB L1, 256 KB full-speed L2 |
| Processor base power (TDP) | 23.3 W |
| Manufacturing process | 180 nm |
| Memory support | Registered SDRAM through the server chipset |
| Front side bus | 133 MT/s |
| Package | Slot 2 (SECC cartridge, 330 contacts) |
| Multiplier | Locked (5.5x) |
| Integrated graphics | None |
Motherboard compatibility
Intel Pentium III Xeon 733 5V-12V needs a motherboard with a Slot 2 socket. Chipset by chipset data for this codename is not recorded yet. See the Slot 2 chipset list and the board maker's CPU support list.
Slot 2 at a glance
| Type | Slot, 330 contacts |
|---|---|
| Package size | n/a |
| Introduced | April 1998 |
| Memory | Registered SDRAM through the board chipset |
| Cooler mounting holes | Cartridge and retention cage |
What the Pentium III Xeon 733 5V-12V is
The Intel Pentium III Xeon 733 5V-12V is a 733 MHz single-core server processor from October 1999. It runs one P6 Cascades core at 733 MHz with no Hyper-Threading, so 1 core gives 1 thread. Cache is 256 KB of full-speed L2 with 32 KB of L1 on a 180 nm process with 28 million transistors. Power is rated at 23.3 W in a Slot 2 SECC cartridge on a 133 MT/s front side bus with a 5.5x multiplier on the 5V-12V regulator path.
The 5V-12V string shares clocks, cache and power with the 2.8 V string while fitting boards wired for higher input rails, which is why server lines stock one or the other. Intel launched both 733 strings on October 25, 1999. The chip supports MMX, SSE and two-way SMP.
Matching clocks with regulator choice suit 5V-12V Slot 2 lines. That is why the 5V-12V string shipped in 5V-12V performance servers.
Socket and motherboard compatibility
The 733 5V-12V fits Slot 2 servers wired for 5V-12V regulation. It needs a 330-lead SC330 board with a 133 MT/s bus and a BIOS that lists the 5V-12V 733 string. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
5V-12V performance servers are the natural match. Boards listing the string accept cartridges with 23.3 W heatsinks.
Memory, PCIe and cooling
Memory is registered SDRAM through the server chipset, matched to the board sockets. The cartridge has no memory controller. Performance boards commonly run ECC pairs.
A 133 MT/s front side bus ties each cartridge to the chipset, while PCI hangs off the chipset. No PCIe lanes originate on the cartridge. Cooling uses SECC heatsinks on the retention cage.
Upgrade paths
On the same slot, a move to a Pentium III Xeon 733 2.8V such as Intel Pentium III Xeon 733 2.8V keeps clocks while changing regulator path. A Xeon 800 5V-12V such as Intel Pentium III Xeon 800 5V-12V adds clocks.
A move to Tanner Xeon drops to 100 MT/s paths. The Slot 2 page lists the range. Note: the queue row lists 23 W; this page uses the verified 23.3 W.
Frequently asked questions
What socket does the Pentium III Xeon 733 5V-12V use?
Slot 2. It is a 23.3 W Cascades server part at 733 MHz in the 5V-12V variant.
What memory does the 733 5V-12V use?
Registered SDRAM through the server chipset.
What is the upgrade path from the 733 5V-12V?
A 733 2.8V on boards wired for that regulator.
Sources and verification
- Intel Pentium III Xeon 733 5V-12V 23W Slot 2 (TechPowerUp)
- List of Intel Xeon processors 733 (Wikipedia)
- Slot 2 (Wikipedia)
Facts last checked against these sources on . Page last edited on .