CPUs

Intel Xeon E5-1660 vs Intel Xeon E5-2637 v3 Full Specs

6 Cores
12 Threads
3.3GHz
4 Cores
8 Threads
3.5GHz
TDP
130W
TDP
135W
Bandwidth
51.2GB/s
DDR3
Bandwidth
68.3GB/s
DDR4
Socket
Socket

6 Cores
4 Cores
12 Threads
8 Threads

Base Clock
3.3GHz
Base Clock
3.5GHz
Boost Clock
3.9GHz
Boost Clock
3.7GHz
Overclocking
Locked
Overclocking
Locked

L1i
32KB
L1i
32KB
L1d
32KB
L1d
32KB
L2
256KB
L2
256KB
L3
15MB
L3
15MB

Type
DDR3
Type
DDR4
Max Memory
384GB
Max Memory
768GB
ECC
Yes
ECC
Yes
Channels
4
Channels
4
Bus Width
256-bit
Bus Width
256-bit
Speed
1600MT/s
Speed
2133MT/s
Bandwidth
51.2GB/s
Bandwidth
68.3GB/s
Bandwidth Calculator
Channels
Transfer Rate
··
51.2GB/s
Bandwidth Calculator
Channels
Transfer Rate
··
68.3GB/s

TDP
130W
TDP
135W

Bus Type
DMI
Bus Type
QPI
Bus Config
4 lanes
Bus Config
16-bit
Bus Speed
5GT/s
Bus Speed
9.6GT/s
Bus Bandwidth
2.5GB/s
Bus Bandwidth
19.2GB/s

PCIe
PCIe 3.0 x40
39.4GB/sBandwidth
PCIe
PCIe 3.0 x40
39.4GB/sBandwidth

Manufacturer
Manufacturer
ISA
x86-64
ISA
x86-64
Architecture
Architecture
Family
Family
Branding
Xeon 2011 branding
Branding
Xeon 2013 branding
Codename
Sandy Bridge-E
Sandy Bridge-EP-8Die
Sandy Bridge-EP-8CVariant
Codename
Haswell-E
-
Haswell-E-LCCVariant
Market Segment
Server
Market Segment
Server
Release Date
Mar 6, 2012
Release Date
Sep 8, 2014

Foundry
Intel
Foundry
Intel
Fabrication Node
32nm
Fabrication Node
22nm
Die Size
435mm²
Die Size
354mm²
Transistor Count
2.3 Billion
Transistor Count
2.6 Billion
Transistor Density
5 MTr/mm²
Transistor Density
7 MTr/mm²