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CPU

Intel

Intel Xeon E3-1275

Processor Released Apr 3, 2011

CPU cores: 4
CPU threads: 8
Maximum boost clock: 3.8 GHz
Thermal design power: 95 W

Benchmark results

PassMark · version unreported · cpuMark5,372^*Platform unreported Compare results
PassMark · version unreported · threadMark1,730^*Platform unreported Compare results
Reported score · version unreported · mark8,328^*Platform unreported Compare results

Processing & platform

CPU cores: 4
CPU threads: 8
Base clock: 3.4 GHz
CPU reference clock: 100 MHz^*
Turbo Boost 2.0 frequency: 3.8 GHz^*
Integrated GPU base frequency: 850 MHz^*
Integrated GPU maximum dynamic frequency: 1,350 MHz^*
Maximum supported memory bandwidth: 21 GB/s^*
Maximum boost clock: 3.8 GHz
L3 cache: 8 MB
Architecture: Sandy Bridge^*
Socket / package: LGA 1155
Process node: 32 nm

Cache hierarchy

L3 / total
Level
L3
Scope
total
Size
8 MB
Reported cache^*
Size
8 MB^*
Level
Reported cache (level unstated)^*
Scope
Intel® Smart Cache^*

Compatible sockets

LGA 1155

Memory & storage

Memory channels: 2
Video memory type: DDR3 1066/1333^*

Supported memory

DDR3 1066/1333^*

CPU memory support

DDR3-1066
Variant / details
Manufacturer CPU memory-controller support; system and module configuration may limit operation.
Technology
DDR3
Transfer rate
1,066 MT/s
DDR3-1333
Variant / details
Manufacturer CPU memory-controller support; system and module configuration may limit operation.
Technology
DDR3
Transfer rate
1,333 MT/s

Power specifications

Thermal design power: 95 W

System configuration

Detailed specifications

Specifications 1 · 33 fields

Product Collection: Intel® Xeon® Processor E3 Family^*
Processor Base Frequency: 3.4^* GHz
Max Turbo Frequency: 3.8^* GHz
Cache: 8 MB SmartCache^*
Bus Speed: 5 GT/s DMI^*
TDP: 95^* W
Embedded Options Available: Yes^*
Max Memory Size: 32^* GB
Memory Types: DDR3 1066/1333^*
Max nb of Memory Channels: 2^*
Vertical Segment: Server^*
Max Memory Bandwidth: 21^* GB/s
ECC Memory Supported: Yes^*
Graphics Base Frequency: 850^* MHz
Graphics Max Dynamic Frequency: 1.35^* GHz
Processor Number: E3-1275^*
PCI Express Revision: 2^*
Max nb of PCI Express Lanes: 20^*
T: 72.6°C^*
Intel Hyper Threading Technology: Yes^*
Intel Virtualization Technology VTx: Yes^*
Intel 64: Yes^*
Status: End of Life^*
Instruction Set: 64-bit^*
Instruction Set Extensions: SSE4.1/4.2, AVX^*
Idle States: Yes^*
Thermal Monitoring Technologies: Yes^*
Execute Disable Bit: Yes^*
Launch Date: Q2'11^*
Lithography: 32^* nm
Recommended Customer Price: $315.00 - $350.00^*
nb of Cores: 4^*
nb of Threads: 8^*

Specifications 2 · 9 fields

Release: Apr 3rd, 2011^*
Name: Xeon E3-1275^*
Codename: Sandy Bridge^*
Cores: 4 / 8^*
Clock: 3.4 to 3.8 GHz^*
Socket: Socket 1155^*
Process: 32^* nm
L3 Cache: 8MB^*
TDP: 95^* W

Specifications 3 · 12 fields

name: Intel Xeon E3-1275 @ 3.40GHz^*
cores: 4^*
logicals: 2^*
samples: 111^*
price: 160^*
tdp: 95^*
date: 2011-04-01^*
socket: LGA1155^*
category: Server^*
speed: 3,400^*
turbo: 3,800^*
cpuCount: 1^*

Specifications 4 · 30 fields

name: Xeon E3-1275^*
Release Date: Apr 3rd, 2011^*
Part#: SR00P^*
Frequency: 3.4^* GHz
Turbo Clock: up to 3.8 GHz^*
Base Clock: 100^* MHz
Multiplier: 34.0x^*
Multiplier Unlocked: No^*
Codename: Sandy Bridge^*
Socket: Intel Socket 1155^*
Generation: Xeon E3 (Sandy Bridge)^*
Memory Support: DDR3^*
ECC Memory: Yes^*
# of Cores: 4^*
# of Threads: 8^*
SMP # CPUs: 1^*
Integrated Graphics: Intel HD P3000^*
Cache L1: 64 KB (per core)^*
Cache L2: 256 KB (per core)^*
Features: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.2, AVX, EIST, Intel 64, XD bit, TXT, VT-x, VT-d, HTT, AES-NI^*
Foundry: Intel^*
Memory Bus: Dual-channel^*
PCI-Express: Gen 3, 16 Lanes (CPU only)^*
Process Size: 32^* nm
Cache L3: 8 MB (shared)^*
Transistors: 1,160 million^*
Die Size: 216^* mm²
Package: FC-LGA10^*
Market: Server/Workstation^*
Production Status: End-of-life^*

Specifications 5 · 2 fields

brand: Intel^*
name: Intel Xeon E3-1275 @ 3.40GHz^*

Specifications 6 · 18 fields

turbo frequency: 3,800^*
cache size: 8,192^*
tdp: 95^*
socket: LGA1155^*
memory type: DDR3 1066/1333^*
cores: 4^*
vertical segment: Server^*
max memory size: 33,554,432^*
status: Discontinued^*
max temp: 72.6^*
package size: 37.5mm x 37.5mm^*
threads: 8^*
name: Intel Xeon E3-1275^*
processor number: E3-1275^*
launch date: 2011-05-01^*
lithography: 32^*
bus speed: 5^*
base frequency: 3,400^*

Specifications 7 · 56 fields

Recommended Customer Price

$350.00^*

Scope and conditions

source_native_row_context

Price scope: Historical source recommendation; not a current retail offer. The original currency notation is retained.^*

Intel® AES New Instructions

Yes^*

Intel® Trusted Execution Technology ‡

Yes^*

Execute Disable Bit ‡

Yes^*

Intel® Virtualization Technology (VT-x) ‡

Yes^*

Intel® Virtualization Technology for Directed I/O (VT-d) ‡

Yes^*

Intel® VT-x with Extended Page Tables (EPT) ‡

Yes^*

Intel vPro® Eligibility ‡

Intel vPro® Platform^*

Total Cores

4^*

Total Threads

8^*

Processor Base Frequency

3.4^* GHz

Cache

8.0^* MB

Scope and conditions

source_native_row_context

Cache description: Intel® Smart Cache^*
Original declaration: 8 MB Intel® Smart Cache^*

Bus Speed

5^* GT/s

TDP

95^* W

Max Turbo Frequency

3.8^* GHz

Intel® Turbo Boost Technology 2.0 Frequency‡

3.8^* GHz

Marketing Status

Discontinued^*

Launch Date

Q2'11^*

Servicing Status

End of Servicing Lifetime^*

Embedded Options Available

Yes^*

End of Servicing Updates Date

Tuesday | December 31 | 2019^*

Max Memory Size (dependent on memory type)

32^* GB

Memory Types

DDR3 1066/1333^*

Max # of Memory Channels

2^*

Max Memory Bandwidth

21^* GB/s

ECC Memory Supported ‡

Yes^*

Graphics Base Frequency

850^* MHz

Intel® Flexible Display Interface (Intel® FDI)

Yes^*

Intel® Clear Video HD Technology

Yes^*

# of Displays Supported ‡

2^*

Product Collection

Intel® Xeon® Processor E3 Family^*

Intel® Quick Sync Video

Yes^*

Intel® InTru™ 3D Technology

Yes^*

Graphics Max Dynamic Frequency

1.35^* GHz

Vertical Segment

Server^*

PCI Express Revision

2.0^*

Max # of PCI Express Lanes

20^*

Sockets Supported

LGA1155^*

Max CPU Configuration

1^*

Processor Number

E3-1275^*

TCASE

72.6^* °C

Package Size

37.5mm x 37.5mm^*

Intel® Turbo Boost Technology ‡

2.0^*

Intel® Hyper-Threading Technology ‡

Yes^*

Lithography

32^* nm

Intel® 64 ‡

Yes^*

Instruction Set

64-bit^*

Idle States

Yes^*

Enhanced Intel SpeedStep® Technology

Yes^*

Intel® Demand Based Switching

Yes^*

Thermal Monitoring Technologies

Yes^*

Instruction Set Extensions

Intel® SSE4.1 | Intel® SSE4.2 | Intel® AVX^*

Use Conditions

Server/Enterprise^*

Intel® Fast Memory Access

Yes^*

Intel® Flex Memory Access

Yes^*

Intel® Identity Protection Technology ‡

Yes^*

Specifications 8 · 11 fields

name: Intel Xeon E3-1275 @ 3.40GHz^*
socket: LGA1155^*
category: Server^*
price: $304.00^*
mark: 8,328^*
value: 27.4^*
single thread: 1,925^*
single thread value: 6.33^*
tdp: 95^*
powerperf: 87^*
testdate: Apr 2011^*

Specifications 9 · 7 fields

microarchitecture

Sandy Bridge^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Xeon E3-1275^*
catalogue_reference: Intel Xeon E3-1275^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

Reported core clock

3.4^* GHz

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Xeon E3-1275^*
catalogue_reference: Intel Xeon E3-1275^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Source calls this core clock; it is not relabelled as base, sustained or gaming clock.^*

core count

4^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Xeon E3-1275^*
catalogue_reference: Intel Xeon E3-1275^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

Historical listing price (dataset 2025-07-23)

amount: 376.99^*
currency: USD^*
dataset_date: 2025-07-23^*
scope: Historical listing observation; retailer, stock and current availability unknown^*

USD

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Xeon E3-1275^*
catalogue_reference: Intel Xeon E3-1275^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

graphics

Intel HD Graphics^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Xeon E3-1275^*
catalogue_reference: Intel Xeon E3-1275^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

name

Intel Xeon E3-1275^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Xeon E3-1275^*
catalogue_reference: Intel Xeon E3-1275^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

tdp

95^* W

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Xeon E3-1275^*
catalogue_reference: Intel Xeon E3-1275^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

Specifications 10 · 12 fields

cpuName

Intel Xeon E3-1275 @ 3.40GHz^*

Scope and conditions

benchmark_context

suite: PassMark^*
test_configuration_verified: No^*
comparable: No^*

testDate

2,011^*

Scope and conditions

benchmark_context

suite: PassMark^*
test_configuration_verified: No^*
comparable: No^*

socket

LGA1155^*

Scope and conditions

benchmark_context

suite: PassMark^*
test_configuration_verified: No^*
comparable: No^*