i5-8400T vs Xeon E3-1275 v6

Primary details

Comparing Xeon E3-1275 v6 and Core i5-8400T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1118	1278
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.82	4.98
Market segment	Server	Desktop processor
Series	Intel Xeon E3	Intel Core i5
Power efficiency	7.54	12.62
Architecture codename	Kaby Lake (2016−2019)	Coffee Lake (2017−2019)
Release date	28 March 2017 (7 years ago)	2 April 2018 (6 years ago)
Launch price (MSRP)	$339	$182

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E3-1275 v6 has 17% better value for money than i5-8400T.

Detailed specifications

Xeon E3-1275 v6 and Core i5-8400T 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)	6 (Hexa-Core)
Threads	8	6
Base clock speed	3.8 GHz	1.7 GHz
Boost clock speed	4.2 GHz	3.3 GHz
Bus type	DMI 3.0	DMI 3.0
Bus rate	8 GT/s	4 × 8 GT/s
Multiplier	38	17
L1 cache	256 KB	64K (per core)
L2 cache	1 MB	256K (per core)
L3 cache	8 MB	9 MB (shared)
Chip lithography	14 nm	14 nm
Die size	no data	149 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	no data	72 °C
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Xeon E3-1275 v6 and Core i5-8400T 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 (Uniprocessor)
Socket	FCLGA1151	FCLGA1151
Power consumption (TDP)	73 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1275 v6 and Core i5-8400T. 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	+	+

Security technologies

Xeon E3-1275 v6 and Core i5-8400T technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+
Secure Key	+	+
MPX	+	+
Identity Protection	-	+
SGX	Yes with Intel® ME	Yes with Intel® ME
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1275 v6 and Core i5-8400T are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E3-1275 v6 and Core i5-8400T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400, DDR3L-1866	DDR4-2666
Maximum memory size	64 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	38.397 GB/s	42.671 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics P630	Intel UHD Graphics 630
Max video memory	64 GB	64 GB
Quick Sync Video	+	+
Clear Video	+	+
Clear Video HD	+	+
Graphics max frequency	1.15 GHz	1.05 GHz
InTru 3D	+	+

Graphics interfaces

Available interfaces and connections of Xeon E3-1275 v6 and Core i5-8400T integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Xeon E3-1275 v6 and Core i5-8400T integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	+
Max resolution over HDMI 1.4	4096x2160@24Hz	4096x2304@24Hz
Max resolution over eDP	4096x2304@60Hz	4096x2304@60Hz
Max resolution over DisplayPort	4096x2304@60Hz	4096x2304@60Hz
Max resolution over VGA	N/A	no data

Graphics API support

APIs supported by Xeon E3-1275 v6 and Core i5-8400T integrated GPUs, sometimes API versions are included.

DirectX	12	12
OpenGL	4.4	4.5

Peripherals

Specifications and connection of peripherals supported by Xeon E3-1275 v6 and Core i5-8400T.

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.

---

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.

---

Pros & cons summary

---

Performance score	5.85	4.69
Integrated graphics card	3.11	3.09
Recency	28 March 2017	2 April 2018
Physical cores	4	6
Threads	8	6
Power consumption (TDP)	73 Watt	35 Watt

---

Should you still have questions on choice between Xeon E3-1275 v6 and Core i5-8400T, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---