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Celeron 3855U vs Core i7-860


Description
The 3855U is based on Skylake architecture while the i7-860 is based on Westmere.

Using the multithread performance as a reference, the 3855U gets a score of 24.6 k points while the i7-860 gets 75.4 k points.

Summarizing, the i7-860 is 3.1 times faster than the 3855U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
106e5
Core
Skylake-U
Lynnfield
Architecture
Base frecuency
1.6 GHz
2.8 GHz
Boost frecuency
1.6 GHz
3.467 GHz
Socket
BGA1356
LGA 1156
Cores/Threads
2/2
4/8
TDP
15 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
32+32 kB
Cache L2
2x256 kB
256 kB
Cache L3
2096 kB
8192 kB
Date
December 2015
September 2009

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
3855U
i7-860
Test#1 (Integers)
1643
2150 (30.85%)
Test#2 (FP)
6721
4870 (-27.55%)
Test#3 (Generic, ZIP)
2063
2822 (36.77%)
Test#1 (Memory)
2404
3127 (30.09%)
TOTAL
12831
12968 (1.07%)

Multithread

3855U

i7-860
Test#1 (Integers)
2196
8236 (275.06%)
Test#2 (FP)
9586
21629 (125.63%)
Test#3 (Generic, ZIP)
2758
14650 (431.17%)
Test#1 (Memory)
2270
5024 (121.35%)
TOTAL
16809
49538 (194.71%)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
3855U
i7-860
Test#1 (Integers)
5930
7874 (32.78%)
Test#2 (FP)
8533
5250 (-38.47%)
Test#3 (Generic, ZIP)
2277
2938 (29.03%)
Test#1 (Memory)
2499
3126 (25.06%)
TOTAL
19239
19187 (-0.27%)

Multithread

3855U

i7-860
Test#1 (Integers)
7867
31501 (300.41%)
Test#2 (FP)
11283
23474 (108.05%)
Test#3 (Generic, ZIP)
2910
15474 (431.77%)
Test#1 (Memory)
2496
4977 (99.39%)
TOTAL
24556
75425 (207.16%)

Performance/W
3855U
i7-860
Test#1 (Integers)
524 points/W
332 points/W
Test#2 (FP)
752 points/W
247 points/W
Test#3 (Generic, ZIP)
194 points/W
163 points/W
Test#1 (Memory)
166 points/W
52 points/W
TOTAL
1637 points/W
794 points/W

Performance/GHz
3855U
i7-860
Test#1 (Integers)
3706 points/GHz
2271 points/GHz
Test#2 (FP)
5333 points/GHz
1514 points/GHz
Test#3 (Generic, ZIP)
1423 points/GHz
847 points/GHz
Test#1 (Memory)
1562 points/GHz
902 points/GHz
TOTAL
12024 points/GHz
5534 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.7.8