Xeon E3-1275 vs W-2145

Primary details

Comparing Xeon W-2145 and Xeon E3-1275 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	679	1534
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	7.59	0.99
Market segment	Server	Server
Series	Intel Xeon W	no data
Power efficiency	7.74	3.46
Architecture codename	Skylake (server) (2017−2018)	Sandy Bridge (2011−2013)
Release date	29 August 2017 (7 years ago)	3 April 2011 (13 years ago)
Launch price (MSRP)	$1,113	$450

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon W-2145 has 667% better value for money than Xeon E3-1275.

Detailed specifications

Xeon W-2145 and Xeon E3-1275 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	8 (Octa-Core)	4 (Quad-Core)
Threads	16	8
Base clock speed	3.7 GHz	3.4 GHz
Boost clock speed	4.5 GHz	3.8 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	37	no data
L1 cache	64K (per core)	64 KB (per core)
L2 cache	1 MB (per core)	256 KB (per core)
L3 cache	11 MB (shared)	8 MB (shared)
Chip lithography	14 nm	32 nm
Die size	484 mm2	216 mm2
Maximum core temperature	no data	73 °C
Maximum case temperature (TCase)	70 °C	no data
Number of transistors	no data	1,160 million
64 bit support	+	+
Windows 11 compatibility	+	-

Compatibility

Information on Xeon W-2145 and Xeon E3-1275 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 (Uniprocessor)	1
Socket	Socket R4	LGA1155
Power consumption (TDP)	140 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon W-2145 and Xeon E3-1275. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
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
Turbo Boost Max 3.0	-	no data
FDI	no data	+
Fast Memory Access	no data	+

Security technologies

Xeon W-2145 and Xeon E3-1275 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon W-2145 and Xeon E3-1275 are enumerated here.

AMD-V	+	-
VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon W-2145 and Xeon E3-1275. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR3
Maximum memory size	512 GB	32 GB
Max memory channels	4	2
Maximum memory bandwidth	85.33 GB/s	21 GB/s
ECC memory support	+	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel HD P3000
Quick Sync Video	-	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.35 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Xeon W-2145 and Xeon E3-1275 integrated GPUs.

Number of displays supported

no data

2

Peripherals

Specifications and connection of peripherals supported by Xeon W-2145 and Xeon E3-1275.

PCIe version	3.0	2.0
PCI Express lanes	48	20

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.

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Pros & cons summary

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Performance score	11.45	3.47
Recency	29 August 2017	3 April 2011
Physical cores	8	4
Threads	16	8
Chip lithography	14 nm	32 nm
Power consumption (TDP)	140 Watt	95 Watt

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Should you still have questions on choice between Xeon W-2145 and Xeon E3-1275, ask them in Comments section, and we shall answer.

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