Intel Pentium III Xeon 600 2.8V socket: Slot 2

What the Pentium III Xeon 600 2.8V is

The Intel Pentium III Xeon 600 2.8V is a 600 MHz single-core server processor from October 1999. It runs one P6 Cascades core at 600 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 19.2 W in a Slot 2 SECC cartridge on a 133 MT/s front side bus with a 4.5x multiplier on the 2.8 V regulator path.

Direct regulation with matching clocks and cache gives buyers a rail choice, which is why server lines stock one string or the other. Intel launched both 600 strings in October 1999. The chip supports MMX, SSE and two-way SMP.

Matching clocks with direct feed suit 2.8 V Slot 2 lines. That is why the 2.8V string shipped in 2.8 V entry servers.

Socket and motherboard compatibility

The 600 2.8V fits Slot 2 entry servers with 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 600 string. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

2.8 V rack servers are the natural match. Boards listing the string accept cartridges with 19.2 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. Entry 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 600 5V-12V such as Intel Pentium III Xeon 600 5V-12V keeps clocks while changing regulator path. A Xeon 667 2.8V such as Intel Pentium III Xeon 667 2.8V adds clocks.

A move to Tanner Xeon drops to 100 MT/s paths. The Slot 2 page lists the range.