CPUBoss Review Our evaluation of E3-1280 vs 2500 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

8.8

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon E3-1280 

CPUBoss recommends the Intel Xeon E3-1280  based on its performance and single-core performance.

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VS

Intel Xeon E3-1280

CPUBoss Winner
Front view of Intel Xeon E3-1280

Differences What are the advantages of each

Front view of Intel Xeon E3-1280

Reasons to consider the
Intel Xeon E3-1280

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Higher clock speed 3.5 GHz vs 3.3 GHz More than 5% higher clock speed
Slightly higher turbo clock speed 3.9 GHz vs 3.7 GHz More than 5% higher turbo clock speed
Slightly more l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Better PassMark score 9,720 vs 6,257 More than 55% better PassMark score
More threads 8 vs 4 Twice as many threads
Better PassMark (Single core) score 2,235 vs 1,857 More than 20% better PassMark (Single core) score
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Newer Apr, 2011 vs Jan, 2011 Release date 3 months later
Front view of Intel Core i5 2500

Reasons to consider the
Intel Core i5 2500

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Much better performance per dollar 2.86 pt/$ vs 0.41 pt/$ More than 7x better performance per dollar
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better performance per watt 9.04 pt/W vs 2.77 pt/W More than 3.2x better performance per watt
Better overclocked clock speed (Water) 4.21 GHz vs 3.6 GHz More than 15% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon E3-1280 vs Core i5 2500

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E3-1280
13,375
Core i5 2500
8,816

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E3-1280
4,940 MB/s
Core i5 2500
2,410,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E3-1280
11,787
Core i5 2500
8,767

GeekBench (64-bit) Data courtesy Primate Labs

Xeon E3-1280
13,550
Core i5 2500
9,632

GeekBench

Xeon E3-1280
13,550
Core i5 2500
11,542

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1280  vs
Core i5 2500 
Clock speed 3.5 GHz 3.3 GHz
Turbo clock speed 3.9 GHz 3.7 GHz
Cores Quad core Quad core
Socket type
LGA 1155

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Performance per watt 2.77 pt/W 9.04 pt/W
Typical power consumption 77.19W 77.19W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Xeon E3-1280  vs
Core i5 2500 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 1 1
Clock multiplier 35 33
Operating temperature Unknown - 73.6°C Unknown - 72.6°C

overclocking

Overclocked clock speed 3.6 GHz 3.7 GHz
Overclocked clock speed (Water) 3.6 GHz 4.21 GHz
Overclocked clock speed (Air) 3.6 GHz 3.7 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 2000
Number of displays supported N/A 2
GPU clock speed N/A 850 MHz
Turbo clock speed N/A 1,100 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 21,333.32 MB/s 21,333.32 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Xeon E3-1280
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Intel Core i5 2500
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