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Core i7-6600U vs Xeon W3520


Description
The i7-6600U is based on Skylake architecture while the W3520 is based on Nehalem.

Using the multithread performance as a reference, the i7-6600U gets a score of 48.2 k points while the W3520 gets 73.2 k points.

Summarizing, the W3520 is 1.5 times faster than the i7-6600U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
106a5
Core
Skylake-U
Nehalem-WS
Architecture
Base frecuency
2.6 GHz
2.667 GHz
Boost frecuency
3.4 GHz
2.933 GHz
Socket
BGA1356
LGA 1366
Cores/Threads
2/4
4 /8
TDP
15 W
130 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+x4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
4096 kB
8192 kB
Date
September 2015
March 2009
Mean monothread perf.
39.73k points
17.96k points
Mean multithread perf.
79.22k points
73.16k points

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
i7-6600U
W3520
Test#1 (Integers)
6.76k
7.35k (x1.09)
Test#2 (FP)
9.58k
4.89k (x0.51)
Test#3 (Generic, ZIP)
2.46k
2.9k (x1.18)
Test#1 (Memory)
4.18k
2.82k (x0.67)
TOTAL
22.99k
17.96k (x0.78)

Multithread

i7-6600U

W3520
Test#1 (Integers)
14.37k
29.69k (x2.07)
Test#2 (FP)
23.79k
22.26k (x0.94)
Test#3 (Generic, ZIP)
5.71k
14.91k (x2.61)
Test#1 (Memory)
4.29k
6.29k (x1.47)
TOTAL
48.16k
73.16k (x1.52)

Performance/W
i7-6600U
W3520
Test#1 (Integers)
958 points/W
228 points/W
Test#2 (FP)
1586 points/W
171 points/W
Test#3 (Generic, ZIP)
380 points/W
115 points/W
Test#1 (Memory)
286 points/W
48 points/W
TOTAL
3211 points/W
563 points/W

Performance/GHz
i7-6600U
W3520
Test#1 (Integers)
1989 points/GHz
2506 points/GHz
Test#2 (FP)
2818 points/GHz
1669 points/GHz
Test#3 (Generic, ZIP)
724 points/GHz
989 points/GHz
Test#1 (Memory)
1229 points/GHz
960 points/GHz
TOTAL
6761 points/GHz
6123 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