Intel Xeon E5-2403 

Released May, 2012
  • 1.8 GHz
  • Quad core
5.2 Out of 10

It is clear that Intel has improved AVX efficiency quite a bit.
by Johan-De-Gelas (Sep, 2014)
Perhaps more surprising is that it even performs well in our FP intensive applications.
by Johan-De-Gelas (Sep, 2014)

CPUBoss Review Our evaluation of the Intel Xeon E5-2403 among all CPUs


Benchmark performance using all cores

Xeon E5-2403
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Xeon E5-2403
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Xeon E5-2403
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Xeon E5-2403
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Xeon E5-2403
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more


Are you paying a premium for performance?

Xeon E5-2403
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more


CPUBoss Score

Combination of all six facets

Xeon E5-2403

Benchmarks Real world tests of the Intel Xeon E5-2403

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5-2403

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5-2403

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-2403
1,050,800 MB/s
Xeon E3-1220 v2
2,200,000 MB/s
Xeon E5-2403 v2
1,200 MB/s

PassMark Data courtesy Passmark

Xeon E5-2403

PassMark (Single Core)

Xeon E5-2403

In The News From around the web


Intel Xeon E5 Version 3: Up to 18 Haswell EP Cores

by Johan De Gelas |
However, it's not a case of the Haswell's L3 cache being a lot worse: the 20MB L3 cache of the Xeon E5-2667 v3 is only slightly slower than the Xeon E5-2690 and is still faster than the Xeon E5-2697 v2 (30MB).
Of course, those kind of bandwidth numbers only matter for specific HPC benchmarks as the L3 cache (30-45MB L3) will take care of most of the requests.

Intel Broadwell-EP Xeon E5 v4 Because Why Not?

by Scott Michaud |
They claim it will be Intel's first 14nm Xeon processor which obviously suggests that it will not be preceded by Broadwell in the lower performance server categories.
Intel will apparently allow Haswell and Broadwell to give off a little more heat than their predecessors.

Specifications Full list of technical specs


Clock speed 1.8 GHz
Cores Quad core


Has a NX bit Yes
Supports trusted computing Yes
Has virtualization support Yes
Instruction set extensions
  1. MMX
  2. AES
  3. SSE
  4. SSE2
  5. SSE4.1
  6. SSE3
  7. Supplemental SSE3
  8. SSE4.2
  9. AVX
Supports dynamic frequency scaling Yes

power consumption

Annual home energy cost 19.27 $/year
Annual commercial energy cost 70.08 $/year
Performance per watt 5.81 pt/W
Typical power consumption 65W


Architecture QPI
Data rate 25,600 MB/s
Transfer rate 6,400 MT/s
Clock speed 3,200 MHz


Architecture x86-64
Threads 4 threads
L2 cache 1 MB
L2 cache per core 0.25 MB/core
L3 cache 10 MB
L3 cache per core 2.5 MB/core
Manufacture process 32 nm
Max CPUs 2
Voltage range 0.6 - 1.35V


Overclock popularity 0

integrated graphics

GPU None

memory controller

Memory controller Built-in
Memory type
  1. DDR3-1066
  2. DDR3-800
  3. DDR3
Channels Triple Channel
Supports ECC Yes
Maximum bandwidth 25,599.99 MB/s
Maximum memory size 393,216 MB
Report a correction


comments powered by Disqus