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Intel Celeron 797 vs Intel Celeron B820 vs Intel Celeron B840

Intel Celeron 797

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The Intel Celeron 797 is a single-core ULV processor for entry level laptops. It is based on the Sandy Bridge architecture (2nd generation Core) and features an integrated graphics card (most likely Intel HD Graphics based on the HD Graphics 2000 at 350-950MHz) and a reduced feature set (compared to the faster Core processors). E.g. Turbo Boost, AES, Hyperthreading, Virtualization VT-d, Quick Sync, Wireless Display and Clear Video HD are deactivated. 

Due to the slow clock speed, the performance is rather limited. Compared to older processors, the 797 should be similar fast as a Celeron M 540 clocked at 1.86 GHz.

Intel Celeron B820

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The Intel Celeron B820 is a dual core processor for entry level laptops. It is based on the Sandy Bridge architecture (2nd generation Core) and features an integrated graphics card (Intel HD Graphics based on the HD Graphics 2000 at 650-1050MHz) and a reduced feature set (compared to the faster Core processors). E.g. Turbo Boost, AES, Hyperthreading, Virtualization VT-d, Quick Sync, Wireless Display and Clear Video HD are deactivated. Furthermore, some power saving features may be deactivated, leading to a shorter battery runtime compared to Core i3 processors.

Due to the slow clock speed, the performance is rather limited. Compared to an AMD Turion II processor, the B810 should be similar fast as a P520.

The integrated dual channel DDR3-1066/1333 memory controller supports up to 16GB.

Intel Celeron B840

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The Intel Celeron B840 is a dual core processor for entry level laptops. It is based on the Sandy Bridge architecture (2nd generation Core) and features an integrated graphics card (Intel HD Graphics based on the HD Graphics 2000 at 650-900MHz) and a reduced feature set (compared to the faster Core processors). E.g. Turbo Boost, AES, Hyperthreading, Virtualization VT-d, Quick Sync, Wireless Display and Clear Video HD are deactivated. Furthermore, some power saving features may be deactivated, leading to a shorter battery runtime compared to Core i3 processors.

Due to the slow clock speed, the performance is rather limited. Compared to the previous generation, the B840 should be similar fast as a 2 GHz Arrandale Pentium /  Celeron (e.g. P6100).

The integrated dual channel DDR3-1066/1333 memory controller supports up to 8GB.

ModelIntel Celeron 797Intel Celeron B820Intel Celeron B840
SeriesIntel CeleronIntel CeleronIntel Celeron
CodenameSandy BridgeSandy BridgeSandy Bridge
Series: Celeron Sandy Bridge
Intel Celeron B8401.9 GHz2 / 2 cores2 MB L3
Intel Celeron B8301.8 GHz2 / 2 cores2 MB L3
Intel Celeron B8201.7 GHz2 / 2 cores2 MB L3
Intel Celeron B8151.6 GHz2 / 2 cores2 MB L3
Intel Celeron B8101.6 GHz2 / 2 cores2 MB L3
Intel Celeron 8871.5 GHz2 / 2 cores2 MB L3
Intel Celeron B8001.5 GHz2 / 2 cores2 MB L3
Intel Celeron 8771.4 GHz2 / 2 cores2 MB L3
Intel Celeron 8671.3 GHz2 / 2 cores2 MB L3
Intel Celeron B7301.8 GHz1 / 2 cores1.5 MB L3
Intel Celeron 8471.1 GHz2 / 2 cores2 MB L3
Intel Celeron 8071.5 GHz1 / 2 cores1.5 MB L3
Intel Celeron B7201.7 GHz1 / 1 cores1.5 MB L3
Intel Celeron B7101.6 GHz1 / 1 cores1.5 MB L3
Intel Celeron 797 « 1.4 GHz1 / 1 cores1.5 MB L3
Intel Celeron B8401.9 GHz2 / 2 cores2 MB L3
Intel Celeron B8301.8 GHz2 / 2 cores2 MB L3
Intel Celeron B820 « 1.7 GHz2 / 2 cores2 MB L3
Intel Celeron B8151.6 GHz2 / 2 cores2 MB L3
Intel Celeron B8101.6 GHz2 / 2 cores2 MB L3
Intel Celeron 8871.5 GHz2 / 2 cores2 MB L3
Intel Celeron B8001.5 GHz2 / 2 cores2 MB L3
Intel Celeron 8771.4 GHz2 / 2 cores2 MB L3
Intel Celeron 8671.3 GHz2 / 2 cores2 MB L3
Intel Celeron B7301.8 GHz1 / 2 cores1.5 MB L3
Intel Celeron 8471.1 GHz2 / 2 cores2 MB L3
Intel Celeron 8071.5 GHz1 / 2 cores1.5 MB L3
Intel Celeron B7201.7 GHz1 / 1 cores1.5 MB L3
Intel Celeron B7101.6 GHz1 / 1 cores1.5 MB L3
Intel Celeron 7971.4 GHz1 / 1 cores1.5 MB L3
Intel Celeron B840 « 1.9 GHz2 / 2 cores2 MB L3
Intel Celeron B8301.8 GHz2 / 2 cores2 MB L3
Intel Celeron B8201.7 GHz2 / 2 cores2 MB L3
Intel Celeron B8151.6 GHz2 / 2 cores2 MB L3
Intel Celeron B8101.6 GHz2 / 2 cores2 MB L3
Intel Celeron 8871.5 GHz2 / 2 cores2 MB L3
Intel Celeron B8001.5 GHz2 / 2 cores2 MB L3
Intel Celeron 8771.4 GHz2 / 2 cores2 MB L3
Intel Celeron 8671.3 GHz2 / 2 cores2 MB L3
Intel Celeron B7301.8 GHz1 / 2 cores1.5 MB L3
Intel Celeron 8471.1 GHz2 / 2 cores2 MB L3
Intel Celeron 8071.5 GHz1 / 2 cores1.5 MB L3
Intel Celeron B7201.7 GHz1 / 1 cores1.5 MB L3
Intel Celeron B7101.6 GHz1 / 1 cores1.5 MB L3
Intel Celeron 7971.4 GHz1 / 1 cores1.5 MB L3
Clock1400 MHz1700 MHz1900 MHz
L1 Cache64 KB128 KB
L2 Cache256 KB512 KB
L3 Cache1.5 MB2 MB2 MB
Cores / Threads1 / 12 / 22 / 2
TDP35 Watt35 Watt35 Watt
Technology32 nm32 nm32 nm
max. Temp.100 °C100 °C100 °C
SocketBGA1023PGA988rPGA988B
FeaturesHD Graphics, DDR3 Memory Controller, Enhanced Speedstep, Thermal Monitoring, Execute Disable BitIdle States, Enhanced SpeedStep, Thermal Monitoring, Execute Disable BitIdle States, Enhanced SpeedStep, Thermal Monitoring, Execute Disable Bit
iGPUIntel HD Graphics (Sandy Bridge) (350 - 950 MHz)Intel HD Graphics (Sandy Bridge) (650 - 1050 MHz)Intel HD Graphics (Sandy Bridge) (650 - 950 MHz)
Architecturex86x86x86
Announced
ManufacturerIntel Celeron 797Intel Celeron B840
$86 U.S.$86 U.S.

Benchmarks

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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Redaktion, 2017-09- 8 (Update: 2017-09-11)