Intel X3370 INXEON3370 Data Sheet

Product codes
INXEON3370
Page of 102
Datasheet
9
Introduction
1
Introduction
The Quad-Core Intel® Xeon® Processor 3300 Series, like the Quad-Core Intel
® 
Xeon
® 
Processor 3200 Series, is a based on the Intel
®
 Core
TM
 microarchitecture. The Intel 
Core microarchitecture combines the performance of previous generation Desktop 
products with the power efficiencies of a low-power microarchitecture to enable 
smaller, quieter systems.The Quad-Core Intel® Xeon® Processor 3300 Series are 64-
bit processors that maintain compatibility with IA-32 software. 
The processor utilizes Flip-Chip Land Grid Array (FC-LGA6) package technology, and 
plug into a 775-land surface mount, Land Grid Array (LGA) socket, referred to as the 
LGA775 socket. 
Note:
In this document the Quad-Core Intel® Xeon® Processor 3300 Series may be referred 
to simply as "the processor." 
Note:
The Quad-Core Intel® Xeon® Processor 3300 Series refers to X3380, X3360, X3350, 
X3330, X3320, L3360. 
The processor is a quad-core processor, based on 45 nm process technology. The 
processor features the Intel
®
 Advanced Smart Cache, a shared multi-core optimized 
cache that significantly reduces latency to frequently used data. The processors feature 
a 1333 MHz front side bus (FSB) and either two independent but shared 6 MB of L2 
cache (2x6M) or two independent but shared 3 MB of L2 cache (2x3M).The processor 
supports all the existing Streaming SIMD Extensions 2 (SSE2), Streaming SIMD 
Extensions 3 (SSE3), Supplemental Streaming SIMD Extension 3 (SSSE3), and the 
Streaming SIMD Extensions 4.1 (SSE4.1). The processor supports several Advanced 
Technologies: Execute Disable (XD) Bit, Intel
®
 64 architecture (Intel
®
 64), Enhanced 
Intel SpeedStep
®
 Technology, and Intel
®
 Virtualization Technology (Intel
®
 VT).
The processor's front side bus (FSB) utilizes a split-transaction, deferred reply protocol. 
The FSB uses Source-Synchronous Transfer of address and data to improve 
performance by transferring data four times per bus clock (4X data transfer rate). 
Along with the 4X data bus, the address bus can deliver addresses two times per bus 
clock and is referred to as a "double-clocked" or 2X address bus. Working together, the 
4X data bus and 2X address bus provide a data bus bandwidth of up to 10.7 GB/s.
The processor use some of the infrastructure already enabled by 2005 FMB platforms 
including heatsink, heatsink retention mechanism, and socket. Manufacturability is a 
high priority; hence, mechanical assembly may be completed from the top of the 
baseboard and should not require any special tooling.
1.1
Terminology
A ‘#’ symbol after a signal name refers to an active low signal, indicating a signal is in 
the active state when driven to a low level. For example, when RESET# is low, a reset 
has been requested. Conversely, when NMI is high, a nonmaskable interrupt has 
occurred. In the case of signals where the name does not imply an active state but 
describes part of a binary sequence (such as address or data), the ‘#’ symbol implies 
that the signal is inverted. For example, D[3:0] = ‘HLHL’ refers to a hex ‘A’, and 
D[3:0]# = ‘LHLH’ also refers to a hex ‘A’ (H= High logic level, L= Low logic level).
“Front Side Bus” refers to the interface between the processor and system core logic 
(a.k.a. the chipset components). The FSB is a multiprocessing interface to processors, 
memory, and I/O.