Intel Xeon E3-1275 v5 vs Intel Xeon E3-1245 v5

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CPU comparison with benchmarks


Intel Xeon E3-1275 v5 CPU1 vs CPU2 Intel Xeon E3-1245 v5
Intel Xeon E3-1275 v5 Intel Xeon E3-1245 v5

CPU comparison

Intel Xeon E3-1275 v5 or Intel Xeon E3-1245 v5 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Xeon E3-1275 v5 has 4 cores with 8 threads and clocks with a maximum frequency of 4.00 GHz. Up to 64 GB of memory is supported in 2 memory channels. The Intel Xeon E3-1275 v5 was released in Q4/2015.

The Intel Xeon E3-1245 v5 has 4 cores with 8 threads and clocks with a maximum frequency of 3.90 GHz. The CPU supports up to 64 GB of memory in 2 memory channels. The Intel Xeon E3-1245 v5 was released in Q4/2015.
Intel Xeon E3 (43) Family Intel Xeon E3 (43)
Intel Xeon E3 v5 (17) CPU group Intel Xeon E3 v5 (17)
5 Generation 5
Skylake S Architecture Skylake S
Desktop Segment Desktop
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Xeon E3-1275 v5 is a 4 core processor with a clock frequency of 3.60 GHz (4.00 GHz). The Intel Xeon E3-1245 v5 has 4 CPU cores with a clock frequency of 3.50 GHz (3.90 GHz).

Intel Xeon E3-1275 v5 Characteristic Intel Xeon E3-1245 v5
4 Cores 4
8 Threads 8
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? No
3.60 GHz Frequency 3.50 GHz
4.00 GHz Turbo Frequency (1 Core) 3.90 GHz
3.80 GHz Turbo Frequency (All Cores) 3.70 GHz

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

Intel Xeon E3-1275 v5 Characteristic Intel Xeon E3-1245 v5
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.

Intel HD Graphics P530 GPU Intel HD Graphics P530
0.40 GHz GPU frequency 0.40 GHz
1.15 GHz GPU (Turbo) 1.15 GHz
9 GPU Generation 9
14 nm Technology 14 nm
3 Max. displays 3
24 Compute units 24
192 Shader 192
No Hardware Raytracing No
No Frame Generation No
32 GB Max. GPU Memory 32 GB
12 DirectX Version 12

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Intel HD Graphics P530 GPU Intel HD Graphics P530
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 Decode / Encode
No Codec VP9 No
Decode / Encode Codec VP8 Decode / Encode
No Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The Intel Xeon E3-1275 v5 supports a maximum of 64 GB of memory in 2 memory channels. The Intel Xeon E3-1245 v5 can connect up to 64 GB of memory in 2 memory channels.

Intel Xeon E3-1275 v5 Characteristic Intel Xeon E3-1245 v5
DDR4-2133 Memory DDR4-2133
64 GB Max. Memory 64 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
34.1 GB/s Max. Bandwidth 34.1 GB/s
Yes ECC Yes
-- L2 Cache --
8.00 MB L3 Cache 8.00 MB
3.0 PCIe version 3.0
16 PCIe lanes 16
15.8 GB/s PCIe Bandwidth 15.8 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Xeon E3-1275 v5 has a TDP of 80 W, that of the Intel Xeon E3-1245 v5 is 80 W.

Intel Xeon E3-1275 v5 Characteristic Intel Xeon E3-1245 v5
80 W TDP (PL1 / PBP) 80 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Intel Xeon E3-1275 v5 has a 8.00 MB cache, while the Intel Xeon E3-1245 v5 cache has a total of 8.00 MB.

Intel Xeon E3-1275 v5 Characteristic Intel Xeon E3-1245 v5
14 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
LGA 1151 Socket LGA 1151
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q4/2015 Release date Q4/2015
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Xeon E3-1275 v5 to help other visitors make their purchasing decisions. The average rating is 3.0 stars (2 ratings). Rate now:
Here you can rate the Intel Xeon E3-1245 v5 to help other visitors make their purchasing decisions. The average rating is 3.4 stars (5 ratings). Rate now:

Average performance in benchmarks

Single core performance in 3 CPU benchmarks
Intel Xeon E3-1275 v5 (100%)
Intel Xeon E3-1245 v5 (96%)
Multi core performance in 4 CPU benchmarks
Intel Xeon E3-1275 v5 (100%)
Intel Xeon E3-1245 v5 (96%)

Geekbench 6 (Single-Core)

Geekbench 6 is a partial load benchmark for modern computers, notebooks and smartphones. In the single-core test, only the fastest CPU core is measured. The test run simulates the performance in practice.
Intel Xeon E3-1275 v5 Intel Xeon E3-1275 v5
4C 8T @ 4.00 GHz
1442 (100%)
Intel Xeon E3-1245 v5 Intel Xeon E3-1245 v5
4C 8T @ 3.90 GHz
1414 (98%)

Geekbench 6 (Multi-Core)

The practical Geekbench 6 multi-core benchmark tests the system's performance under partial load. The processor's maximum power consumption is far from being used up.
Intel Xeon E3-1275 v5 Intel Xeon E3-1275 v5
4C 8T @ 3.80 GHz
4763 (100%)
Intel Xeon E3-1245 v5 Intel Xeon E3-1245 v5
4C 8T @ 3.70 GHz
4725 (99%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Xeon E3-1275 v5 Intel Xeon E3-1275 v5
4C 8T @ 4.00 GHz
1193 (100%)
Intel Xeon E3-1245 v5 Intel Xeon E3-1245 v5
4C 8T @ 3.90 GHz
1095 (92%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Xeon E3-1275 v5 Intel Xeon E3-1275 v5
4C 8T @ 3.80 GHz
4328 (100%)
Intel Xeon E3-1245 v5 Intel Xeon E3-1245 v5
4C 8T @ 3.70 GHz
4089 (94%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Xeon E3-1275 v5 Intel Xeon E3-1275 v5
Intel HD Graphics P530 @ 1.15 GHz
442 (100%)
Intel Xeon E3-1245 v5 Intel Xeon E3-1245 v5
Intel HD Graphics P530 @ 1.15 GHz
442 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Xeon E3-1275 v5 Intel Xeon E3-1275 v5
4C 8T @ 3.80 GHz
8451 (100%)
Intel Xeon E3-1245 v5 Intel Xeon E3-1245 v5
4C 8T @ 3.70 GHz
8051 (95%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Xeon E3-1275 v5 Intel Xeon E3-1275 v5
4C 8T @ 4.00 GHz
172 (100%)
Intel Xeon E3-1245 v5 Intel Xeon E3-1245 v5
4C 8T @ 3.90 GHz
168 (98%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Xeon E3-1275 v5 Intel Xeon E3-1275 v5
4C 8T @ 3.80 GHz
844 (100%)
Intel Xeon E3-1245 v5 Intel Xeon E3-1245 v5
4C 8T @ 3.70 GHz
821 (97%)

Devices using this processor

Intel Xeon E3-1275 v5 Intel Xeon E3-1245 v5
Unknown Unknown

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