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Core i7-6500U vs Xeon X5670


Description
The i7-6500U is based on Skylake architecture while the X5670 is based on Westmere.

Using the multithread performance as a reference, the i7-6500U gets a score of 76.8 k points while the X5670 gets 115.4 k points.

Summarizing, the X5670 is 1.5 times faster than the i7-6500U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
206c2
Core
Skylake-U
Westmere-EP
Architecture
Base frecuency
2.5 GHz
2.933 GHz
Boost frecuency
3.1 GHz
3.333 GHz
Socket
BGA1356
LGA 1366
Cores/Threads
2/4
6 /6
TDP
15 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
64 kB
Cache L2
4096 kB
256 kB
Cache L3
kB
12288 kB
Date
September 2015
March 2010
Mean monothread perf.
46.25k points
20.26k points
Mean multithread perf.
97.52k points
115.4k 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
i7-6500U
X5670
Test#1 (Integers)
11.11k
8.35k (x0.75)
Test#2 (FP)
15.97k
5.58k (x0.35)
Test#3 (Generic, ZIP)
4.25k
3.32k (x0.78)
Test#1 (Memory)
5.66k
3k (x0.53)
TOTAL
36.99k
20.26k (x0.55)

Multithread

i7-6500U

X5670
Test#1 (Integers)
23.1k
49.72k (x2.15)
Test#2 (FP)
36.73k
35.19k (x0.96)
Test#3 (Generic, ZIP)
9.99k
21.88k (x2.19)
Test#1 (Memory)
7k
8.6k (x1.23)
TOTAL
76.82k
115.4k (x1.5)

Performance/W
i7-6500U
X5670
Test#1 (Integers)
1540 points/W
523 points/W
Test#2 (FP)
2449 points/W
370 points/W
Test#3 (Generic, ZIP)
666 points/W
230 points/W
Test#1 (Memory)
467 points/W
91 points/W
TOTAL
5121 points/W
1215 points/W

Performance/GHz
i7-6500U
X5670
Test#1 (Integers)
3582 points/GHz
2506 points/GHz
Test#2 (FP)
5152 points/GHz
1675 points/GHz
Test#3 (Generic, ZIP)
1370 points/GHz
997 points/GHz
Test#1 (Memory)
1827 points/GHz
900 points/GHz
TOTAL
11932 points/GHz
6078 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