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Intel

Xeon E5645

▲ 506 ▼

6 Cores, 12 Threads @2.4 GHz, Westmere EP.
Release date ≤ Q1 2014.

Average Bench: 64.6% (508th of 1442)

more Based on 1,565 user benchmarks.  Devices: BFEBFBFF000206C2, 1FABFBFF000206C2, 1FEBFBFF000206C2, 0000000000000000, 0FEBFBFF00020651, 1F8BFBFF000206C2, 1FABFBFF00020651, 1789FBFF000206C2, 0F8BFBFF000206C2 Model: Intel(R) Xeon(R) CPU E5645 @ 2.40GHz
Poor: 50%Average: 64.6% Great: 80%
Gaming
Gaming 65%
Destroyer
Desktop
Desktop 65%
Battle cruiser
Workstation
Workstation 51%
Yacht

Popular builds with this CPU

Above average average bench

The Intel Xeon E5645 averaged 35.4% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.

Strengths

Avg. Memory Latency 83.7Pts
Avg. Quad Core Speed 248Pts

Above average consistency

The range of scores (95th - 5th percentile) for the Intel Xeon E5645 is 30.4%. This is a relatively narrow range which indicates that the Intel Xeon E5645 performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Multi Core Speed 439Pts
Avg. Octa Core Speed 379Pts
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Average Bench

(Based on 1,565 samples)
Rank 50864.6%
Min Avg Max
68.8 Memory 83.7 94.1
40.3 1-Core 65.1 98.2
80.4 2-Core 130 192
57.4% 93 Pts
Min Avg Max
156 4-Core 248 363
244 8-Core 379 569
38.8% 313 Pts
Min Avg Max
290 64-Core 439 679
27.2% 439 Pts
User Benchmarks BenchNormalHeavyServer
The fastest CPU (mainstream) averages a speed of 100%
CPU, 1 CPU, 6 cores, 6 threads
Base clock 2.4 GHz, turbo 2.55 GHz (avg)
65% Good
Memory 85.3
1-Core 67
2-Core 128
58% 93.6 Pts
4-Core 249
8-Core 319
36% 284 Pts
64-Core 360
22% 360 Pts
LGA1366, 1 CPU, 6 cores, 12 threads
Base clock 2.4 GHz, turbo 2.45 GHz (avg)
64.2% Good
Memory 83.1
1-Core 62.3
2-Core 123
56% 89.6 Pts
4-Core 246
8-Core 368
38% 307 Pts
64-Core 405
25% 405 Pts
CPU 1, 1 CPU, 6 cores, 12 threads
Base clock 2.4 GHz, turbo 2.5 GHz (avg)
63% Good
Memory 80.9
1-Core 65.5
2-Core 137
57% 94.4 Pts
4-Core 246
8-Core 348
37% 297 Pts
64-Core 418
26% 418 Pts
CPU 1, 1 CPU, 6 cores, 12 threads
Base clock 2.4 GHz, turbo 2.4 GHz (avg)
61.7% Good
Memory 83.3
1-Core 57.9
2-Core 119
54% 86.8 Pts
4-Core 218
8-Core 336
34% 277 Pts
64-Core 422
26% 422 Pts
CPU0 PROCESSOR, 1 CPU, 6 cores, 6 threads
Base clock 2.4 GHz, turbo 2.5 GHz (avg)
60.6% Good
Memory 76.6
1-Core 59.7
2-Core 136
54% 90.9 Pts
4-Core 241
8-Core 373
38% 307 Pts
64-Core 375
23% 375 Pts
CPU 1, 1 CPU, 6 cores, 12 threads
Base clock 2.4 GHz, turbo 2.4 GHz (avg)
59.5% Above average
Memory 77
1-Core 59
2-Core 117
52% 84.4 Pts
4-Core 228
8-Core 334
35% 281 Pts
64-Core 429
27% 429 Pts
CPU0 PROCESSOR, 1 CPU, 6 cores, 12 threads
Base clock 2.4 GHz, turbo 2.45 GHz (avg)
56.6% Above average
Memory 69.6
1-Core 53.8
2-Core 120
49% 81.1 Pts
4-Core 236
8-Core 372
37% 304 Pts
64-Core 438
27% 438 Pts
CPU1, 1 CPU, 6 cores, 6 threads
Base clock 2.4 GHz, turbo 2.55 GHz (avg)
54.9% Above average
Memory 82
1-Core 66
2-Core 124
56% 90.6 Pts
4-Core 166
8-Core 151
22% 158 Pts
64-Core 311
19% 311 Pts
CPU-A (00), 1 CPU, 6 cores, 12 threads
Base clock 2.55 GHz, turbo 2.65 GHz (avg)
54.8% Above average
Memory 70
1-Core 62.5
2-Core 121
51% 84.4 Pts
4-Core 215
8-Core 334
34% 275 Pts
64-Core 390
24% 390 Pts
1,565 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,720,749 CPUs tested

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

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CPU GPU SSD HDD RAM MBD
Typical Xeon E5645 Builds (Compare 1,577 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 23%
Surfboard
Desktop
Desktop 70%
Battle cruiser
Workstation
Workstation 19%
Surfboard

System: Dell Precision WorkStation T5500

CPU
Xeon E5645IntelBench 65%, 1,565 samples1x
GPU
GTX 1050-TiNvidia  $59Bench 29%, 946,701 samples84x
Quadro 4000NvidiaBench 7%, 8,609 samples82x
GTX 1060-6GBNvidia  $117Bench 56%, 1,368,019 samples61x
SSD
A400 240GBKingston  $28Bench 66%, 424,288 samples74x
A400 480GBKingston  $38Bench 74%, 237,487 samples31x
850 Evo 250GBSamsung  $100Bench 103%, 951,591 samples29x
RAM
6x4GBUnknownBench 47%, 28,320 samples246x
3x4GBUnknownBench 42%, 39,448 samples119x
6x2GBUnknownBench 46%, 38,297 samples117x
EDIT WITH CUSTOM PC BUILDER Value: 87% - Excellent Total price: $87

Popular Xeon E5645 systems:

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Processor Rankings (Price vs Performance) April 2024 CPU Rankings

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.

 Specifications

Essentials

DescriptionIntel® Xeon® Processor E5645 (12M Cache, 2.40 GHz, 5.86 GT/s Intel® QPI)
Code NameWestmere EP
Launch DateQ1'10
Processor NumberE5645
# of Cores6
# of Threads12
Cache12 MB SmartCache
Instruction Set64-bit
Instruction Set ExtensionsSSE4.2
Embedded Options AvailableYes
Lithography32 nm
VID Voltage Range0.750V-1.350V
Recommended Price$554.00 - $558.00
Clock Speed2.4 GHz
Max Turbo Frequency2.67 GHz
Bus Speed5.86 GT/s QPI
QPI Links2
Max TDP80 W

Memory

Max Memory Size288 GB
Memory TypesDDR3 800/1066/1333
Memory Channels3
Memory Bandwidth32 GB/s
Physical Address Extensions40-bit
ECC Memory SupportedYes

Data Protection

AES New InstructionsYes

Advanced Technologies

Virtualization Tech (VT-x)Yes
Intel 64Yes
Idle StatesYes
Enhanced Intel SpeedStep® TechYes
Thermal Monitoring TechnologiesNo
Turbo Boost Tech1.0
Hyper-Threading TechYes
Virtualization for Directed I/O (VT-d)Yes
VT-x with Extended Page Tables (EPT)Yes
Demand Based SwitchingYes

Package

Package Size42.5mm X 45mm
Max CPU Configuration2
Sockets SupportedFCLGA1366

Platform Protection

Execute Disable BitYes
Trusted Execution TechYes

 Comments

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1442 Processors (Compared) Thousands of user benchmarks compiled into one comparison list

See how consistently different CPUs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

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ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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