Intel Pentium III Xeon 1000 2.8V socket: Slot 2
The Intel Pentium III Xeon 1000 2.8V uses the Slot 2 slot. It is a 30.8 W single-core Cascades server part at 1000 MHz with 256 KB of full-speed L2 cache for Slot 2 gigahertz servers.
- Socket
- Slot 2
- Launched
- August 22, 2000
- Cores and threads
- 1 and 1
- Base power
- 30.8 W
- Codename
- Cascades
- Segment
- Server
- Family
- Intel Pentium III Xeon
- Clocks
- 1.0 GHz
Intel Pentium III Xeon 1000 2.8V specifications
| Cores | 1 |
|---|---|
| Threads | 1 |
| Core architecture | Cascades (P6) |
| Clocks | 1000 MHz base, no turbo |
| Cache | 32 KB L1, 256 KB full-speed L2 |
| Processor base power (TDP) | 30.8 W |
| Manufacturing process | 180 nm |
| Memory support | Registered ECC SDRAM through the server chipset |
| Front side bus | 133 MT/s |
| Package | Slot 2 (SECC cartridge, 330 contacts) |
| Multiplier | Locked (7.5x) |
| Integrated graphics | None |
Motherboard compatibility
Intel Pentium III Xeon 1000 2.8V 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 1000 2.8V is
The Intel Pentium III Xeon 1000 2.8V is a 1000 MHz single-core server processor from August 2000. It runs one P6 Cascades core at 1000 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. Power is rated at 30.8 W in a Slot 2 SECC cartridge on a 133 MT/s front side bus with a 7.5x multiplier on the 2.8 V regulator path.
Gigahertz server clocks with a fast bus close the 256 KB Cascades line, which is why the 1000 2.8V headed dual workgroup servers in late 2000. Intel launched the Xeon 1000 on August 22, 2000 at $719. The chip supports MMX, SSE and two-way SMP.
Gigahertz clocks with a 30.8 W envelope suit Slot 2 dual servers with registered SDRAM. The 7.5x half-ratio needs an exact BIOS string. That is why the 1000 2.8V shipped in performance workgroup boxes.
Socket and motherboard compatibility
The 1000 2.8V fits Slot 2 dual servers wired for 2.8 V regulation. It needs a 330-lead SC330 board with a 133 MT/s bus and a BIOS that lists the 2.8 V Xeon 1000. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Dual workgroup servers are the natural match. Boards listing the 2.8 V string accept cartridges with 30.8 W heatsinks each.
Memory, PCIe and cooling
Memory is registered ECC SDRAM through the server chipset, matched to the board sockets. The cartridge has no memory controller. Dual boards commonly interleave 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 1000 5V-12V such as Intel Pentium III Xeon 1000 5V-12V keeps clocks and cache while changing regulator path. A Xeon 933 on the same list drops clocks at similar power.
A move to Foster Xeon needs Socket 603. The Slot 2 page lists the range for planning. Note: the queue row lists 30 W; this page uses the verified 30.8 W from the Xeon tables.
Frequently asked questions
What socket does the Pentium III Xeon 1000 2.8V use?
Slot 2. It is a 30.8 W Cascades server part at 1000 MHz in the 2.8 V variant.
What memory does the 1000 2.8V use?
Registered ECC SDRAM through the server chipset.
What is the upgrade path from the 1000 2.8V?
A 1000 5V-12V on boards wired for that regulator.
Sources and verification
- List of Intel Xeon processors 1000 256KB 30.8W (Wikipedia)
- Slot 2 (Wikipedia)
- Pentium III Xeon datasheet SC330 (Intel)
Facts last checked against these sources on . Page last edited on .