Xeon E3-1245 v2 vs E5-2637 v2

General info

Comparing Xeon E5-2637 v2 and Xeon E3-1245 v2 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1289	1303
Place by popularity	not in top-100	not in top-100
Value for money	3.88	2.91
Market segment	Server	Server
Architecture codename	Ivy Bridge-EP (2013)	Ivy Bridge (2012−2013)
Release date	1 September 2013 (10 years old)	14 May 2012 (11 years old)
Launch price (MSRP)	$1,090	$462
Current price	$52 (0x MSRP)	$138 (0.3x MSRP)

Value for money

Performance per price, higher is better.

Xeon E5-2637 v2 has 33% better value for money than Xeon E3-1245 v2.

Technical specs

Xeon E5-2637 v2 and Xeon E3-1245 v2 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)	4 (Quad-Core)
Threads	8	8
Base clock speed	3.5 GHz	3.4 GHz
Boost clock speed	3.8 GHz	3.8 GHz
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	256 KB (per core)	256 KB (per core)
L3 cache	10 MB (shared)	8 MB (shared)
Chip lithography	22 nm	22 nm
Die size	160 mm2	160 mm2
Maximum core temperature	76 °C	no data
Number of transistors	1,400 million	1,400 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Xeon E5-2637 v2 and Xeon E3-1245 v2 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	2	1
Socket	FCLGA2011	FCLGA1155
Power consumption (TDP)	130 Watt	77 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2637 v2 and Xeon E3-1245 v2. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	-	+
Demand Based Switching	+	+
PAE	46 Bit	no data
FDI	no data	+
Fast Memory Access	no data	+
Status	Discontinued	Discontinued

Security technologies

Xeon E5-2637 v2 and Xeon E3-1245 v2 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	no data
Identity Protection	-	+
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2637 v2 and Xeon E3-1245 v2 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2637 v2 and Xeon E3-1245 v2. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	768 GB	32.77 GB
Max memory channels	4	2
Maximum memory bandwidth	59.7 GB/s	25.6 GB/s
ECC memory support	+	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel HD P4000
Quick Sync Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.25 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Xeon E5-2637 v2 and Xeon E3-1245 v2 integrated GPUs.

Number of displays supported

no data

3

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2637 v2 and Xeon E3-1245 v2.

PCIe version	3.0	3.0
PCI Express lanes	40	no data

Synthetic benchmark performance

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

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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.

E5-2637 v2 outperforms E3-1245 v2 by 2% based on our aggregated benchmark results.

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Advantages and disadvantages

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Performance score	4.19	4.12
Recency	1 September 2013	14 May 2012
Cost	$1090	$462
Power consumption (TDP)	130 Watt	77 Watt

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Should you still have questions on choice between Xeon E5-2637 v2 and Xeon E3-1245 v2, ask them in Comments section, and we shall answer.

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