Intel Pentium G840 

Released April, 2011
  • 2.8 GHz
  • Dual core
6.7 Out of 10

CPUBoss Review Our evaluation of the Intel Pentium G840 among desktop CPUs (45 to 75W)

Performance

Benchmark performance using all cores

Pentium G840
5.5
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Pentium G840
6.3
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Pentium G840
n.d.
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Pentium G840
n.d.
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Pentium G840
6.7
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Pentium G840
5.0
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

6.7

CPUBoss Score

Combination of all six facets

Pentium G840
6.7

Benchmarks Real world tests of the Intel Pentium G840

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Pentium G840
3,538
Core i3 3220
5,399

GeekBench 3 (Single core) Data courtesy Primate Labs

Pentium G840
1,979
Core i3 3220
2,501

GeekBench 3 (AES single core) Data courtesy Primate Labs

Pentium G840
138,400 MB/s
Core i3 3220
173,000 MB/s
Core2 Duo E8400
128,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Pentium G840
3,515
Core i3 3220
5,351

GeekBench (64-bit) Data courtesy Primate Labs

Pentium G840
3,906
Core i3 3220
5,707

GeekBench

Pentium G840
4,603
Core i3 3220
8,919

PassMark Data courtesy Passmark

Pentium G840
2,569
Core i3 3220
4,229

PassMark (Single Core)

Pentium G840
1,441
Core i3 3220
1,764

Specifications Full list of technical specs

summary

Clock speed 2.8 GHz
Cores Dual core
Socket type LGA 1155

features

Has a NX bit Yes
Supports trusted computing No
Has virtualization support Yes
Instruction set extensions
  1. MMX
  2. SSE
  3. SSE2
  4. SSE4.1
  5. SSE3
  6. Supplemental SSE3
  7. SSE4.2
  8. SSE4
Supports dynamic frequency scaling Yes

power consumption

TDP 65W
Annual home energy cost 27.42 $/year
Annual commercial energy cost 68.24 $/year
Performance per watt 2.21 pt/W
Idle power consumption 52.4W
Peak power consumption 77.9W
Typical power consumption 71.53W

bus

Architecture DMI
Transfer rate 5,000 MT/s

details

Architecture x86-64
Threads 2 threads
L2 cache 1 MB
L2 cache per core 0.5 MB/core
L3 cache 3 MB
L3 cache per core 1.5 MB/core
Manufacture process 32 nm
Max CPUs 1
Clock multiplier 28
Operating temperature Unknown - 69.1°C

overclocking

Overclocked clock speed 2.93 GHz
Overclocked clock speed (Water) 2.8 GHz
Overclocked clock speed (Air) 2.93 GHz

integrated graphics

GPU GPU
Label Intel® HD Graphics
Number of displays supported 2
GPU clock speed 850 MHz
Turbo clock speed 1,100 MHz

memory controller

Memory controller Built-in
Memory type
  1. DDR3-1333
  2. DDR3-1066
  3. DDR3
Channels Dual Channel
Maximum bandwidth 21,333.32 MB/s
Maximum memory size 32,768 MB
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