Core i3-1005G1 vs Pentium G840

Primary Details

Comparing Pentium G840 and Core i3-1005G1 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2480	1499
Place by popularity	not in top-100	52
Cost-Effectiveness Evaluation	4.61	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i3
Architecture codename	Sandy Bridge (2011−2013)	Ice Lake-U (2019−2020)
Release date	22 May 2011 (12 years ago)	1 August 2019 (4 years ago)
Launch price (MSRP)	$60	$281
Current price	$64 (1.1x MSRP)	$451 (1.6x MSRP)

Cost-Effectiveness Evaluation

Performance per price, higher is better.

Detailed Specifications

Pentium G840 and Core i3-1005G1 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)	2 (Dual-core)
Threads	2	4
Base clock speed	2.8 GHz	1.2 GHz
Boost clock speed	2.8 GHz	3.4 GHz
L1 cache	64 KB (per core)	64K (per core)
L2 cache	256 KB (per core)	256K (per core)
L3 cache	3 MB (shared)	4 MB (shared)
Chip lithography	32 nm	10 nm
Die size	131 mm2	no data
Maximum core temperature	69 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	504 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	No	No

Compatibility

Information on Pentium G840 and Core i3-1005G1 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	FCBGA1526
Power consumption (TDP)	65 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium G840 and Core i3-1005G1. 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, Intel® AVX-512
AES-NI	+	+
FMA	no data	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
TSX	no data	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
SIPP	no data	-
FDI	+	no data
Fast Memory Access	+	no data
Status	Discontinued	Discontinued

Security technologies

Pentium G840 and Core i3-1005G1 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Secure Key	no data	+
SGX	no data	Yes with Intel® ME
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium G840 and Core i3-1005G1 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium G840 and Core i3-1005G1. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4, DDR4
Maximum memory size	32 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	21 GB/s	58.3 GB/s
ECC memory support	no data	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	Intel® UHD Graphics for 10th Gen Intel® Processors
Quick Sync Video	-	+
Graphics max frequency	1.1 GHz	900 MHz

Graphics interfaces

Available interfaces and connections of Pentium G840 and Core i3-1005G1 integrated GPUs.

Number of displays supported	2	3
eDP	no data	+
DisplayPort	no data	+
HDMI	no data	+

Graphics image quality

Maximum display resolutions supported by Pentium G840 and Core i3-1005G1 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	4096 x 2304@60Hz
Max resolution over eDP	no data	5120 x 3200@60Hz
Max resolution over DisplayPort	no data	5120 x 3200@60Hz

Graphics API support

APIs supported by Pentium G840 and Core i3-1005G1 integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.6

Peripherals

Specifications and connection of peripherals supported by Pentium G840 and Core i3-1005G1.

PCIe version

2.0

3.0

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.

Core i3-1005G1 outperforms Pentium G840 by 299% based on our aggregated benchmark results.

---

Pros & Cons Summary

---

Performance score	0.80	3.19
Recency	22 May 2011	1 August 2019
Threads	2	4
Cost	$60	$281
Chip lithography	32 nm	10 nm
Power consumption (TDP)	65 Watt	15 Watt

---

Should you still have questions on choice between Pentium G840 and Core i3-1005G1, 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.

---