Xeon E3-1276 v3 vs E3-1285 v3

Primary details

Comparing Xeon E3-1285 v3 and Xeon E3-1276 v3 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1338	1258
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Power efficiency	4.94	5.33
Architecture codename	Haswell-WS (2013−2014)	no data
Release date	2 June 2013 (11 years ago)	1 April 2014 (10 years ago)

Detailed specifications

Xeon E3-1285 v3 and Xeon E3-1276 v3 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	3.6 GHz	3.6 GHz
Boost clock speed	4 GHz	4 GHz
Bus rate	5 GT/s	5 GT/s
L1 cache	64 KB (per core)	no data
L2 cache	256 KB (per core)	no data
L3 cache	8192 KB (shared)	8 MB Intel® Smart Cache
Chip lithography	22 nm	22 nm
Die size	160 mm2	no data
Number of transistors	1,400 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E3-1285 v3 and Xeon E3-1276 v3 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	1
Socket	FCLGA1150	FCLGA1150
Power consumption (TDP)	84 Watt	84 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1285 v3 and Xeon E3-1276 v3. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
SIPP	+	+
FDI	+	+
Fast Memory Access	+	+

Security technologies

Xeon E3-1285 v3 and Xeon E3-1276 v3 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
Identity Protection	+	+
OS Guard	+	+
Anti-Theft	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1285 v3 and Xeon E3-1276 v3 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E3-1285 v3 and Xeon E3-1276 v3. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4	DDR3L-1333, DDR3L-1600
Maximum memory size	32 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	25.6 GB/s
ECC memory support	+	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD P4600	no data
Max video memory	no data	1.7 GB
Quick Sync Video	+	+
Clear Video HD	+	+
Graphics max frequency	1.3 GHz	1.25 GHz
Execution Units	no data	20
InTru 3D	+	+

Graphics interfaces

Available interfaces and connections of Xeon E3-1285 v3 and Xeon E3-1276 v3 integrated GPUs.

Number of displays supported	3	3
eDP	no data	+
DisplayPort	-	+
HDMI	-	+
VGA	no data	+

Graphics image quality

Maximum display resolutions supported by Xeon E3-1285 v3 and Xeon E3-1276 v3 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	3840x2160@60Hz
Max resolution over DisplayPort	no data	3840x2160@60Hz
Max resolution over VGA	no data	2880x1800@60Hz

Graphics API support

APIs supported by Xeon E3-1285 v3 and Xeon E3-1276 v3 integrated GPUs, sometimes API versions are included.

DirectX	no data	11.2
OpenGL	no data	4.3

Peripherals

Specifications and connection of peripherals supported by Xeon E3-1285 v3 and Xeon E3-1276 v3.

PCIe version	3.0	3.0
PCI Express lanes	16	16

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	4.47	4.82
Recency	2 June 2013	1 April 2014

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Should you still have questions on choice between Xeon E3-1285 v3 and Xeon E3-1276 v3, ask them in Comments section, and we shall answer.

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