i7-1255U vs Xeon E5-2670 v3

Primary details

Comparing Xeon E5-2670 v3 and Core i7-1255U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	892	896
Place by popularity	not in top-100	74
Cost-effectiveness evaluation	1.92	no data
Market segment	Server	Laptop
Series	Intel Xeon E5	Intel Alder Lake-M
Power efficiency	6.74	53.82
Architecture codename	Haswell-EP (2014−2015)	Alder Lake-U (2022)
Release date	8 September 2014 (10 years ago)	23 February 2022 (2 years ago)
Launch price (MSRP)	$1,589	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-2670 v3 and Core i7-1255U 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	12 (Dodeca-Core)	10 (Deca-Core)
Threads	24	12
Base clock speed	2.3 GHz	1.7 GHz
Boost clock speed	3.1 GHz	4.7 GHz
Bus type	QPI	no data
Bus rate	2 × 9.6 GT/s	no data
Multiplier	23	no data
L1 cache	64K (per core)	80K (per core)
L2 cache	256K (per core)	1.25 MB (per core)
L3 cache	30 MB (shared)	12 MB (shared)
Chip lithography	22 nm	10 nm
Die size	356 mm2	no data
Maximum core temperature	85 °C	100 °C
Number of transistors	2,600 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Xeon E5-2670 v3 and Core i7-1255U 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 (Multiprocessor)	1
Socket	FCLGA2011	Intel BGA 1744
Power consumption (TDP)	120 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2670 v3 and Core i7-1255U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	no data
AES-NI	+	+
FMA	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	-	no data
Demand Based Switching	+	no data
PAE	46 Bit	no data

Security technologies

Xeon E5-2670 v3 and Core i7-1255U technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data
Secure Key	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2670 v3 and Core i7-1255U are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2670 v3 and Core i7-1255U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866, DDR4-2133	DDR4, DDR5
Maximum memory size	768 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	68 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Intel Iris Xe Graphics G7 96EUs ( - 1250 MHz)

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2670 v3 and Core i7-1255U.

PCIe version	3.0	4.0
PCI Express lanes	40	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.

---

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	8.55	8.53
Recency	8 September 2014	23 February 2022
Physical cores	12	10
Threads	24	12
Chip lithography	22 nm	10 nm
Power consumption (TDP)	120 Watt	15 Watt

---

Should you still have questions on choice between Xeon E5-2670 v3 and Core i7-1255U, 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.

---