| | | | | | |

Core i7-870 vs i3-6006U


Description
The i7-870 is based on Nehalem architecture while the i3-6006U is based on Skylake.

Using the multithread performance as a reference, the i7-870 gets a score of 67.1 k points while the i3-6006U gets 47.5 k points.

Summarizing, the i7-870 is 1.4 times faster than the i3-6006U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106e5
406e3
Core
Lynnfield
Skylake-U
Architecture
Base frecuency
2.933 GHz
2 GHz
Boost frecuency
3.6 GHz
2 GHz
Socket
LGA 1156
BGA1356
Cores/Threads
4/8
2/4
TDP
95 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
8192 kB
3072 kB
Date
September 2009
November 2016
Mean monothread perf.
18.13k points
31.3k points
Mean multithread perf.
67.13k points
68.38k points

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
i7-870
i3-6006U
Test#1 (Integers)
1.98k
2.02k (x1.02)
Test#2 (FP)
4.36k
8.2k (x1.88)
Test#3 (Generic, ZIP)
2.24k
2.63k (x1.17)
Test#1 (Memory)
2.72k
3.92k (x1.44)
TOTAL
11.3k
16.77k (x1.48)

Multithread

i7-870

i3-6006U
Test#1 (Integers)
4.46k
3.83k (x0.86)
Test#2 (FP)
13.95k
17.17k (x1.23)
Test#3 (Generic, ZIP)
7.54k
5.77k (x0.77)
Test#1 (Memory)
1.7k
3.62k (x2.13)
TOTAL
27.65k
30.39k (x1.1)

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
i7-870
i3-6006U
Test#1 (Integers)
7.43k
7.28k (x0.98)
Test#2 (FP)
4.96k
10.51k (x2.12)
Test#3 (Generic, ZIP)
2.7k
2.81k (x1.04)
Test#1 (Memory)
3.04k
2.88k (x0.95)
TOTAL
18.13k
23.48k (x1.29)

Multithread

i7-870

i3-6006U
Test#1 (Integers)
27.58k
14.98k (x0.54)
Test#2 (FP)
21.84k
23.68k (x1.08)
Test#3 (Generic, ZIP)
13.55k
6.37k (x0.47)
Test#1 (Memory)
4.16k
2.43k (x0.58)
TOTAL
67.13k
47.46k (x0.71)

Performance/W
i7-870
i3-6006U
Test#1 (Integers)
290 points/W
998 points/W
Test#2 (FP)
230 points/W
1579 points/W
Test#3 (Generic, ZIP)
143 points/W
425 points/W
Test#1 (Memory)
44 points/W
162 points/W
TOTAL
707 points/W
3164 points/W

Performance/GHz
i7-870
i3-6006U
Test#1 (Integers)
2063 points/GHz
3640 points/GHz
Test#2 (FP)
1379 points/GHz
5255 points/GHz
Test#3 (Generic, ZIP)
750 points/GHz
1404 points/GHz
Test#1 (Memory)
845 points/GHz
1441 points/GHz
TOTAL
5037 points/GHz
11739 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. 3.11.4