Xeon E5-2637 vs E5-1603

Place in the ranking	1852	1990
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Power efficiency	1.59	2.21
Architecture codename	no data	Sandy Bridge-EP (2012)
Release date	1 January 2012 (12 years ago)	6 March 2012 (12 years ago)

Detailed specifications

Xeon E5-1603 and Xeon E5-2637 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	4 (Quad-Core)	2 (Dual-core)
Threads	4	4
Base clock speed	2.8 GHz	3 GHz
Boost clock speed	no data	3.5 GHz
Bus rate	0 GT/s	8 GT/s
L1 cache	no data	64 KB (per core)
L2 cache	no data	256 KB (per core)
L3 cache	10 MB	5120 KB (shared)
Chip lithography	32 nm	32 nm
Die size	no data	294 mm²
Maximum core temperature	64 °C	70 °C
Number of transistors	no data	1,270 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.6V - 1.35V	no data

Compatibility

Information on Xeon E5-1603 and Xeon E5-2637 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	2
Socket	FCLGA2011	FCLGA2011
Power consumption (TDP)	130 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-1603 and Xeon E5-2637. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	Intel® AVX
AES-NI	+	+
AVX	-	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	-
Demand Based Switching	+	+

Security technologies

Xeon E5-1603 and Xeon E5-2637 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-1603 and Xeon E5-2637 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-1603 and Xeon E5-2637. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-800, DDR3-1066	DDR3
Maximum memory size	375 GB	384 GB
Max memory channels	4	4
Maximum memory bandwidth	31.4 GB/s	51.2 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5-1603 and Xeon E5-2637.

PCIe version	3.0	3.0
PCI Express lanes	40	40

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Xeon E5-1603 2.18
+16.6%

Xeon E5-2637 1.87

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Xeon E5-1603 3467
+16.4%

Xeon E5-2637 2978