Xeon E-2478 vs Pentium G840

Primary details

Comparing Pentium G840 and Xeon E-2478 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2608	311
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	4.61	82.50
Market segment	Desktop processor	Server
Power efficiency	1.15	22.22
Architecture codename	Sandy Bridge (2011−2013)	Raptor Lake-S (2023−2024)
Release date	22 May 2011 (13 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$60	$568

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E-2478 has 1690% better value for money than Pentium G840.

Detailed specifications

Pentium G840 and Xeon E-2478 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	2 (Dual-core)	8 (Octa-Core)
Threads	2	16
Base clock speed	2.8 GHz	2.8 GHz
Boost clock speed	2.8 GHz	5.2 GHz
Bus rate	no data	16 GT/s
L1 cache	64 KB (per core)	80 KB (per core)
L2 cache	256 KB (per core)	2 MB (per core)
L3 cache	3 MB (shared)	24 MB (shared)
Chip lithography	32 nm	Intel 7 nm
Die size	131 mm2	257 mm2
Maximum core temperature	69 °C	100 °C
Number of transistors	504 million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Pentium G840 and Xeon E-2478 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	FCLGA1155	FCLGA1700
Power consumption (TDP)	65 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium G840 and Xeon E-2478. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	2
Hyper-Threading Technology	-	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Turbo Boost Max 3.0	no data	+
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Pentium G840 and Xeon E-2478 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium G840 and Xeon E-2478 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium G840 and Xeon E-2478. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5-4800
Maximum memory size	32 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	21 GB/s	no data
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	N/A
Graphics max frequency	1.1 GHz	no data

Graphics interfaces

Available interfaces and connections of Pentium G840 and Xeon E-2478 integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Pentium G840 and Xeon E-2478.

PCIe version	2.0	5
PCI Express lanes	no data	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	0.82	19.49
Recency	22 May 2011	14 December 2023
Physical cores	2	8
Threads	2	16
Power consumption (TDP)	65 Watt	80 Watt

---

Should you still have questions on choice between Pentium G840 and Xeon E-2478, 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.

---