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Core i7-930 vs Celeron 3855U


Description
The i7-930 is based on Westmere architecture while the 3855U is based on Skylake.

Using the multithread performance as a reference, the i7-930 gets a score of 69.4 k points while the 3855U gets 24.6 k points.

Summarizing, the i7-930 is 2.8 times faster than the 3855U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106a5
406e3
Core
Bloomfield
Skylake-U
Architecture
Base frecuency
2.8 GHz
1.6 GHz
Boost frecuency
3.067 GHz
1.6 GHz
Socket
LGA 1366
BGA1356
Cores/Threads
4/8
2/2
TDP
130 W
15 W
Cache L1 (d+i)
32+32 kB
2x32+2x32 kB
Cache L2
256 kB
2x256 kB
Cache L3
8192 kB
2096 kB
Date
February 2010
December 2015

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
i7-930
3855U
Test#1 (Integers)
1941
1643 (-15.36%)
Test#2 (FP)
4384
6721 (53.33%)
Test#3 (Generic, ZIP)
2638
2063 (-21.80%)
Test#1 (Memory)
2408
2404 (-0.18%)
TOTAL
11371
12831 (12.84%)

Multithread

i7-930

3855U
Test#1 (Integers)
7305
2196 (-69.94%)
Test#2 (FP)
19361
9586 (-50.49%)
Test#3 (Generic, ZIP)
13429
2758 (-79.46%)
Test#1 (Memory)
2011
2270 (12.87%)
TOTAL
42106
16809 (-60.08%)

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
i7-930
3855U
Test#1 (Integers)
7276
5930 (-18.49%)
Test#2 (FP)
4819
8533 (77.06%)
Test#3 (Generic, ZIP)
2862
2277 (-20.45%)
Test#1 (Memory)
2623
2499 (-4.71%)
TOTAL
17580
19239 (9.44%)

Multithread

i7-930

3855U
Test#1 (Integers)
28092
7867 (-72.00%)
Test#2 (FP)
21624
11283 (-47.82%)
Test#3 (Generic, ZIP)
14826
2910 (-80.37%)
Test#1 (Memory)
4851
2496 (-48.55%)
TOTAL
69393
24556 (-64.61%)

Performance/W
i7-930
3855U
Test#1 (Integers)
216 points/W
524 points/W
Test#2 (FP)
166 points/W
752 points/W
Test#3 (Generic, ZIP)
114 points/W
194 points/W
Test#1 (Memory)
37 points/W
166 points/W
TOTAL
534 points/W
1637 points/W

Performance/GHz
i7-930
3855U
Test#1 (Integers)
2372 points/GHz
3706 points/GHz
Test#2 (FP)
1571 points/GHz
5333 points/GHz
Test#3 (Generic, ZIP)
933 points/GHz
1423 points/GHz
Test#1 (Memory)
855 points/GHz
1562 points/GHz
TOTAL
5732 points/GHz
12024 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