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Core i7-920 vs i3-6006U


Description
The i7-920 is based on Nehalem Westmere architecture while the i3-6006U is based on Skylake.

Using the multithread performance as a reference, the i7-920 gets a score of 47.2 k points while the i3-6006U gets 47.5 k points.

Summarizing, the i3-6006U is 1 times faster than the i7-920 . 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
Nehalem Westmere
Base frecuency
2.667 GHz
2 GHz
Boost frecuency
2.993 GHz
2 GHz
Socket
LGA 1366
BGA1356
Cores/Threads
4/8
2/4
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
3072 kB
Date
November 2008
November 2016
Mean monothread perf.
16.33k points
31.3k points
Mean multithread perf.
47.2k 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
i7-920
i3-6006U
Test#1 (Integers)
1.97k
2.02k (x1.03)
Test#2 (FP)
4.43k
8.2k (x1.85)
Test#3 (Generic, ZIP)
2.75k
2.63k (x0.96)
Test#1 (Memory)
2.53k
3.92k (x1.55)
TOTAL
11.68k
16.77k (x1.44)

Multithread

i7-920

i3-6006U
Test#1 (Integers)
7.71k
3.83k (x0.5)
Test#2 (FP)
18.81k
17.17k (x0.91)
Test#3 (Generic, ZIP)
13.76k
5.77k (x0.42)
Test#1 (Memory)
5.07k
3.62k (x0.71)
TOTAL
45.34k
30.39k (x0.67)

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
i7-920
i3-6006U
Test#1 (Integers)
6.12k
7.28k (x1.19)
Test#2 (FP)
4.76k
10.51k (x2.21)
Test#3 (Generic, ZIP)
2.78k
2.81k (x1.01)
Test#1 (Memory)
2.67k
2.88k (x1.08)
TOTAL
16.33k
23.48k (x1.44)

Multithread

i7-920

i3-6006U
Test#1 (Integers)
19.26k
14.98k (x0.78)
Test#2 (FP)
14.96k
23.68k (x1.58)
Test#3 (Generic, ZIP)
8.05k
6.37k (x0.79)
Test#1 (Memory)
4.92k
2.43k (x0.49)
TOTAL
47.2k
47.46k (x1.01)

Performance/W
i7-920
i3-6006U
Test#1 (Integers)
148 points/W
998 points/W
Test#2 (FP)
115 points/W
1579 points/W
Test#3 (Generic, ZIP)
62 points/W
425 points/W
Test#1 (Memory)
38 points/W
162 points/W
TOTAL
363 points/W
3164 points/W

Performance/GHz
i7-920
i3-6006U
Test#1 (Integers)
2044 points/GHz
3640 points/GHz
Test#2 (FP)
1591 points/GHz
5255 points/GHz
Test#3 (Generic, ZIP)
930 points/GHz
1404 points/GHz
Test#1 (Memory)
891 points/GHz
1441 points/GHz
TOTAL
5457 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