PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Overview

The Atom x5-E3940 is manufactured by Intel. It was released in 30 August 2014 (11 years ago). It is based on the Apollo Lake (2014−2016) architecture. It features 4 cores and 4 threads. Base frequency is 1.6 GHz, with boost up to 1.8 GHz. L3 cache: 0 kB. L2 cache: 2 MB (total). Built on 14 nm process technology. Socket: FCBGA1296. Thermal design power (TDP): 10 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,816 points. Launch price was $69.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The Atom x5-E3940 is positioned at rank #337 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar Atom x5-E3940

#101

Core i5-1350P

MSRP: $320|Avg: $250

97%

#325

Atom x5-Z8300

MSRP: $20|Avg: N/A

485%

#326

Atom Z3735G

MSRP: $17|Avg: N/A

478%

#327

Core i5-480M

MSRP: $81|Avg: $77

438%

#328

Core i5-460M

MSRP: $80|Avg: $129

436%

#329

Core i5-2540M

MSRP: $266|Avg: $10

432%

#331

Core i5-450M

MSRP: $32|Avg: $31

418%

#332

Core i3-380M

MSRP: $49|Avg: $25

400%

#333

Core i5-430M

MSRP: N/A|Avg: $33

400%

#334

Core 2 Duo T6600

MSRP: N/A|Avg: $4

389%

#337

Atom x5-E3940

MSRP: N/A|Avg: N/A

100%

Based on actual market prices and performance synthetic scores.

FPS Benchmarks

Predicted performance for Atom x5-E3940 across popular games. Tested paired with RTX 4090 to isolate CPU performance.

Technical Analysis

Detailed breakdown of Atom x5-E3940 specifications and capabilities.

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Processing Power

The Atom x5-E3940 is a 4-core / 4-thread processor based on the Apollo Lake (2014−2016) architecture, manufactured on a 14 nm process node. It reaches a maximum boost clock of 1.8 GHz from a base frequency of 1.6 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 0 kB of L3 cache, plus 2 MB (total) of L2 cache and 56K (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 1,816, placing it in the Entry Level performance tier as a Legacy generation product.

Specification	Atom x5-E3940
Cores / ThreadsPhysical/logical processing units	4C / 4T
Max Boost ClockPeak single-core speed under boost	1.8 GHz
Base ClockGuaranteed minimum operating frequency	1.6 GHz
ArchitectureCPU microarchitecture design	Apollo Lake (2014−2016)
Process NodeFabrication technology — smaller = more efficient	14 nm
L3 CacheShared cache — reduces memory latency for all cores	0 kB
L2 CachePer-core fast cache for frequently accessed data	2 MB (total)
L1 CacheUltra-fast per-core cache	56K (per core)
64-bit Support	Yes
Windows 11 Compatible	No
PassMark ScoreOverall multi-threaded benchmark score	1,816

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Memory & Platform

The Atom x5-E3940 fits into the FCBGA1296 socket and supports PCIe 3.0 with 6 total PCIe lanes for expansion cards and storage. It supports DDR3-1866 memory at speeds up to DDR3L-1866 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 8 GB across 2 channels (dual-channel doubles bandwidth). It supports ECC memory, providing error-correcting capabilities — essential for mission-critical workloads and servers. Integrated graphics: Intel HD Graphics 500 — allows display output without a dedicated GPU, useful for troubleshooting and light tasks.

Specification	Atom x5-E3940
TypeDesktop or Laptop processor	Laptop
SeriesProduct family	5x Intel Atom
SocketMotherboard socket required	FCBGA1296
PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth	PCIe 3.0
PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion	6
RAM TypeSupported memory standard	DDR3-1866
Max RAM SpeedMaximum officially supported memory frequency	DDR3L-1866
Max RAM CapacityMaximum installable memory	8 GB
RAM ChannelsDual-channel doubles bandwidth vs single-channel	2
ECC SupportError-Correcting Code memory — prevents data corruption	Yes
Integrated GPUBuilt-in graphics processor	Intel HD Graphics 500
Compatible ChipsetsMotherboard chipsets that support this CPU	Intel FCBGA1296
Max CPUs in ConfigMulti-socket support for servers	1 (Uniprocessor)

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Power & Cooling

The Atom x5-E3940 has a rated TDP (Thermal Design Power) of 10 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed.

Specification	Atom x5-E3940
TDPThermal Design Power — heat output under sustained workload	10 Watt

💰

Value Analysis

It currently holds Rank #337 in the overall cost-benefit ranking — this ranking factors in performance-per-dollar relative to all available processors. Performance ranking position: #2666 out of all indexed processors.

Specification	Atom x5-E3940
Launch PriceOriginal retail price at launch	$69
Cost-Benefit RankPosition in overall value ranking	#337
Performance RankPosition in overall performance ranking	#2666
Release DateLaunch date	30 August 2014 (11 years ago)
Release Year	2014
DesignerArchitecture designer (e.g. Intel, AMD)	Intel
ManufacturerFabrication foundry (e.g. TSMC)	Intel