Intel Celeron N2840 vs Intel Celeron N2815

Intel Celeron N2840

► remove Intel N2840

The Intel Celeron N2840 is a power efficient dual-core SoC for entry-level notebooks. It is clocked at up to 2.58 GHz and part of the Bay Trail-M platform. Thanks to the specially optimized 22 nanometer low-power process (P1271) with tri-gate transistors, performance and energy efficiency have been significantly improved compared to previous Intel Atom CPUs. The N2840 supports Intel Quick Sync and Wireless Display.

Architecture

The processor cores are based on the new Silvermont architecture, which is an out-of-order design for the first time. The increased utilization of the pipeline and many other improvements (optimized branch prediction, increased buffers, enhanced decoders) have increased the performance per clock by about 50 percent. At the same time, however, the Hyper-Threading feature of the previous generation has been removed. Other major changes are the support for new instruction set extensions such as SSE 4.1 and 4.2 as well as AES-NI (depending on the model).

Performance

Thanks to the improved performance per clock, the Celeron N2840 is faster than previous Intel Atoms, e.g. the N2850. Depending on the benchmark, the N2840 competes with older dual core CPUs like the Intel Core 2 Duo series. For simple everyday tasks such as Internet or Office the performance is adequate, but not for complex software or modern games.

Graphics

The graphics unit of Bay Trail is based on the Intel Gen7 architecture, which supports DirectX 11 and is also found in the Ivy Bridge series (e.g. HD Graphics 4000). With only 4 EUs (Execution Units) and a relatively low clock speed of up to 792 MHz, the GPU is even slower than the HD Graphics (Ivy Bridge). Therefore, only older and less demanding games will run fluently.

Power Consumption

The entire SoC is rated at a TDP of 7.5 watts. Thus, the chip can be used in compact subnotebooks.

Intel Celeron N2815

► remove Intel N2815

The Intel Celeron N2815 is a power efficient dual-core SoC for entry-level notebooks. It is clocked at 1.86 - 2.13 GHz and part of the Bay Trail-M platform. Thanks to the specially optimized 22 nanometer low-power process (P1271) with tri-gate transistors, performance and energy efficiency have been significantly improved compared to previous Intel Atom CPUs.

Architecture

The processor cores are based on the new Silvermont architecture, which is an out-of-order design for the first time. The increased utilization of the pipeline and many other improvements (optimized branch prediction, increased buffers, enhanced decoders) have increased the performance per clock by about 50 percent. At the same time, however, the Hyper-Threading feature of the previous generation has been removed. Other major changes are the support for new instruction set extensions such as SSE 4.1 and 4.2 as well as AES-NI (depending on the model).

Performance

Thanks to the improved performance per clock, the Celeron N2815 is faster than previous Intel Atoms, e.g. the N2800. According to our benchmarks, the N2815 even competes with AMD APUs like the AMD A4-4355M. For simple everyday tasks such as Internet or Office the performance is adequate, but not for complex software or modern games.

Graphics

The graphics unit of Bay Trail is based on the Intel Gen7 architecture, which supports DirectX 11 and is also found in the Ivy Bridge series (e.g. HD Graphics 4000). With only 4 EUs (Execution Units) and a relatively low clock speed of up to 756 MHz, the GPU is even slower than the HD Graphics (Ivy Bridge). Therefore, only older and less demanding games will run fluently.

Power Consumption

The entire SoC is rated at a TDP of 7.5 watts. Thus, the chip can be used in compact subnotebooks.

Intel Celeron N2840Intel Celeron N2815
Intel CeleronIntel Celeron
Bay Trail-MBay Trail-M
: Celeron Bay Trail-M
Intel Celeron N2940 (compare)1830 - 2250 MHz4 / 4
Intel Celeron N2930 (compare)1830 - 2160 MHz4 / 4
Intel Celeron N2920 (compare)1860 - 2000 MHz4 / 4
» Intel Celeron N28402160 - 2580 MHz2 / 2
Intel Celeron N2910 (compare)1600 MHz4 / 4
Intel Celeron N2830 (compare)2160 - 2410 MHz2 / 2
Intel Celeron N2820 (compare)2170 - 2390 MHz2 / 2
Intel Celeron N28151860 - 2133 MHz2 / 2
Intel Celeron N2810 (compare)2000 MHz2 / 2
Intel Celeron N2808 (compare)1580 - 2250 MHz2 / 2
Intel Celeron N2807 (compare)1580 - 2160 MHz2 / 2
Intel Celeron N2806 (compare)1580 - 2000 MHz2 / 2
Intel Celeron N2805 (compare)1460 MHz2 / 2
Intel Celeron N2940 (compare)1830 - 2250 MHz4 / 4
Intel Celeron N2930 (compare)1830 - 2160 MHz4 / 4
Intel Celeron N2920 (compare)1860 - 2000 MHz4 / 4
Intel Celeron N28402160 - 2580 MHz2 / 2
Intel Celeron N2910 (compare)1600 MHz4 / 4
Intel Celeron N2830 (compare)2160 - 2410 MHz2 / 2
Intel Celeron N2820 (compare)2170 - 2390 MHz2 / 2
» Intel Celeron N28151860 - 2133 MHz2 / 2
Intel Celeron N2810 (compare)2000 MHz2 / 2
Intel Celeron N2808 (compare)1580 - 2250 MHz2 / 2
Intel Celeron N2807 (compare)1580 - 2160 MHz2 / 2
Intel Celeron N2806 (compare)1580 - 2000 MHz2 / 2
Intel Celeron N2805 (compare)1460 MHz2 / 2
2160 - 2580 MHz1860 - 2133 MHz
112 KB112 KB
1 MB1 MB
2 / 22 / 2
7.5 7.5
22 22
105 °C105 °C
FCBGA1170FCBGA1170
HD Graphics (Bay Trail, 313 - 792 MHz), Wireless Display, Quick Sync, SpeedstepHD Graphics (Bay Trail, max. 756 MHz)
iGPUIntel HD Graphics (Bay Trail) (313 - 792 MHz)Intel HD Graphics (Bay Trail) (313 - 756 MHz)
Intel Celeron N2840Intel Celeron N2815
$107 U.S.

Cinebench R15 - CPU Multi 64Bit
min: 69     avg: 73.7     median: 76 (2%)     max: 76 Points
min: 49     avg: 55.5     median: 55.5 (1%)     max: 62 Points
Cinebench R15 - CPU Single 64Bit
min: 37     avg: 38.7     median: 38 (18%)     max: 41 Points
min: 31     avg: 32.5     median: 32.5 (15%)     max: 34 Points
Cinebench R11.5 - CPU Multi 64Bit
min: 0.76     avg: 0.9     median: 0.9 (3%)     max: 0.92 Points
min: 0.62     avg: 0.7     median: 0.7 (3%)     max: 0.76 Points
Cinebench R11.5 - CPU Single 64Bit
min: 0.43     avg: 0.4     median: 0.4 (18%)     max: 0.45 Points
min: 0.32     avg: 0.4     median: 0.4 (15%)     max: 0.4 Points
Cinebench R10 - Rendering Single 32Bit
min: 1328     avg: 1331     median: 1331 (15%)     max: 1334 Points
1068 Points (12%)
Cinebench R10 - Rendering Multiple CPUs 32Bit
2533 Points (5%)
2038 Points (4%)
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 2585     avg: 3072.5     median: 3072.5 (4%)     max: 3560 Points
2781 Points (4%)
Cinebench R10 - Rendering Single CPUs 64Bit
min: 1471     avg: 1684     median: 1684 (16%)     max: 1897 Points
1509 Points (15%)
wPrime 2.0x - 1024m *
1818.1 seconds (21%)
wPrime 2.0x - 32m *
57.8 seconds (12%)
WinRAR - Result
594 KB/s (7%)
X264 HD Benchmark 4.0 - Pass 2
4.5 fps (3%)
X264 HD Benchmark 4.0 - Pass 1
24.1 fps (9%)
TrueCrypt - Serpent Mean 100MB
0.1 GB/s (0%)
TrueCrypt - Twofish Mean 100MB
0.1 GB/s (3%)
TrueCrypt - AES Mean 100MB
0.1 GB/s (1%)
3DMark 06 - CPU
1510 Points (4%)
Super Pi mod 1.5 XS 1M *
42.4 Seconds (9%)
Super Pi mod 1.5 XS 2M *
92.7 Seconds (4%)
Super Pi Mod 1.5 XS 32M *
1965.4 Seconds (9%)
3DMark 11 - Performance Physics 1280x720
min: 860     avg: 1028     median: 1072.5 (6%)     max: 1107 points
min: 850     avg: 871.5     median: 871.5 (5%)     max: 893 points
3DMark - Ice Storm Standard Physics 1280x720
min: 6624     avg: 6974.5     median: 6974.5 (4%)     max: 7325 Points
min: 2209     avg: 5878     median: 5878 (4%)     max: 9547 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
12854 Points (16%)
3DMark - Cloud Gate Standard Physics 1280x720
min: 644     avg: 651.5     median: 651.5 (2%)     max: 659 Points
min: 166     avg: 459     median: 459 (1%)     max: 752 Points
3DMark - Fire Strike Physics 1920x1080
1017 Points (4%)
Geekbench 2 - 32 Bit - Stream
2183 Points (18%)
Geekbench 2 - 32 Bit - Memory
1950 Points (18%)
Geekbench 2 - 32 Bit - Floating Point
1747 Points (5%)
Geekbench 2 - 32 Bit - Integer
1993 Points (6%)
Geekbench 2 - 32 Bit - Total Score
1917 Points (7%)
Geekbench 3 - 32 Bit Multi-Core Score
1688 Points (5%)
1343 Points (4%)
Geekbench 3 - 32 Bit Single-Core Score
957 Points (20%)
781 Points (17%)
Mozilla Kraken 1.1 - Total Score *
min: 3842.8     avg: 4870     median: 4294.8 (7%)     max: 7094.1 ms
Sunspider - 1.0 Total Score *
min: 306.9     avg: 493     median: 535 (6%)     max: 663.6 ms
Sunspider - 0.9.1 Total Score *
741.3 ms (7%)
Octane V2 - Total Score
min: 4320     avg: 6695.4     median: 7486 (15%)     max: 8442 Points

Average Benchmarks Intel Celeron N2840 → 100%

Average Benchmarks Intel Celeron N2815 → 92%

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* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)