Celeron J1900 vs i7-640LM

Place in the ranking	2484	2676
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	Intel Celeron
Power efficiency	3.63	6.81
Architecture codename	Arrandale (2010−2011)	Bay Trail-D (2013)
Release date	7 January 2010 (14 years ago)	1 November 2013 (11 years ago)
Launch price (MSRP)	$332	$82

Detailed specifications

Core i7-640LM and Celeron J1900 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)	4 (Quad-Core)
Threads	4	4
Base clock speed	2.13 GHz	2 GHz
Boost clock speed	2.93 GHz	2.42 GHz
Bus type	DMI 1.0	no data
Bus rate	1 × 2.5 GT/s	no data
Multiplier	16	no data
L1 cache	64 KB (per core)	224 KB
L2 cache	256 KB (per core)	2 MB
L3 cache	4 MB (shared)	2 MB L2 Cache
Chip lithography	32 nm	22 nm
Die size	81+177 mm²	no data
Maximum core temperature	105 °C	105 °C
Number of transistors	382+177 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-640LM and Celeron J1900 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
Socket	BGA1288	FCBGA1170
Power consumption (TDP)	25 Watt	10 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-640LM and Celeron J1900. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
AES-NI	+	-
FMA	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	+	-
Hyper-Threading Technology	+	-
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
PAE	36 Bit	36 Bit
FDI	+	-
Fast Memory Access	+	no data
RST	no data	-

Security technologies

Core i7-640LM and Celeron J1900 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	+
Anti-Theft	no data	-

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-640LM and Celeron J1900 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-640LM and Celeron J1900. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-800, DDR3-1066	DDR3
Maximum memory size	8 GB	8 GB
Max memory channels	2	2
Maximum memory bandwidth	17.051 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for Previous Generation Intel® Processors	Intel® HD Graphics for Intel Atom® Processor Z3700 Series
Quick Sync Video	-	+
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	566 MHz	854 MHz

Graphics interfaces

Available interfaces and connections of Core i7-640LM and Celeron J1900 integrated GPUs.

Number of displays supported

Peripherals

Specifications and connection of peripherals supported by Core i7-640LM and Celeron J1900.

PCIe version	2.0	2.0
PCI Express lanes	16	4

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.

i7-640LM 0.96
+33.3%

Celeron J1900 0.72

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i7-640LM 1531
+33%

Celeron J1900 1151

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i7-640LM 366
+112%

Celeron J1900 173

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i7-640LM 680
+32%

Celeron J1900 515

Gaming performance

Pros & cons summary

Performance score	0.96	0.72
Recency	7 January 2010	1 November 2013
Physical cores	2	4
Chip lithography	32 nm	22 nm
Power consumption (TDP)	25 Watt	10 Watt

i7-640LM has a 33.3% higher aggregate performance score.

Celeron J1900, on the other hand, has an age advantage of 3 years, 100% more physical cores, a 45.5% more advanced lithography process, and 150% lower power consumption.

The Core i7-640LM is our recommended choice as it beats the Celeron J1900 in performance tests.

Should you still have questions on choice between Core i7-640LM and Celeron J1900, ask them in Comments section, and we shall answer.