Core i7-6600U vs Xeon E5645
Description
The i7-6600U is based on Skylake architecture while the E5645 is based on Westmere.
Using the multithread performance as a reference, the i7-6600U gets a score of 48.2 k points while the E5645 gets 77 k points.
Summarizing, the E5645 is 1.6 times faster than the i7-6600U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-6600U gets a score of 48.2 k points while the E5645 gets 77 k points.
Summarizing, the E5645 is 1.6 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
206c2
Core
Skylake-U
Westmere-EP
Base frecuency
2.6 GHz
2.4 GHz
Boost frecuency
3.4 GHz
2.8 GHz
Socket
BGA1356
LGA 1366
Cores/Threads
2/4
6 /6
TDP
15 W
80 W
Cache L1 (d+i)
2x32+2x32 kB
64 kB
Cache L2
2x256 kB
256 kB
Cache L3
4096 kB
12288 kB
Date
September 2015
March 2010
Mean monothread perf.
39.73k points
15.64k points
Mean multithread perf.
79.22k points
76.96k 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
i7-6600U
E5645
Test#1 (Integers)
2.75k
1.78k (x0.65)
Test#2 (FP)
12.23k
3.91k (x0.32)
Test#3 (Generic, ZIP)
3.9k
2.52k (x0.65)
Test#1 (Memory)
5.61k
2.42k (x0.43)
TOTAL
24.48k
10.64k (x0.43)
Multithread
i7-6600U
E5645
Test#1 (Integers)
5.23k
9.67k (x1.85)
Test#2 (FP)
25k
22.92k (x0.92)
Test#3 (Generic, ZIP)
8.98k
14.31k (x1.59)
Test#1 (Memory)
4.73k
3.81k (x0.8)
TOTAL
43.95k
50.7k (x1.15)
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
E5645
Test#1 (Integers)
6.76k
6.47k (x0.96)
Test#2 (FP)
9.58k
4.4k (x0.46)
Test#3 (Generic, ZIP)
2.46k
2.43k (x0.99)
Test#1 (Memory)
4.18k
2.33k (x0.56)
TOTAL
22.99k
15.64k (x0.68)
Multithread
i7-6600U
E5645
Test#1 (Integers)
14.37k
34.43k (x2.4)
Test#2 (FP)
23.79k
24.23k (x1.02)
Test#3 (Generic, ZIP)
5.71k
14.48k (x2.54)
Test#1 (Memory)
4.29k
3.81k (x0.89)
TOTAL
48.16k
76.96k (x1.6)
Performance/W
i7-6600U
E5645
Test#1 (Integers)
958 points/W
430 points/W
Test#2 (FP)
1586 points/W
303 points/W
Test#3 (Generic, ZIP)
380 points/W
181 points/W
Test#1 (Memory)
286 points/W
48 points/W
TOTAL
3211 points/W
962 points/W
Performance/GHz
i7-6600U
E5645
Test#1 (Integers)
1989 points/GHz
2311 points/GHz
Test#2 (FP)
2818 points/GHz
1573 points/GHz
Test#3 (Generic, ZIP)
724 points/GHz
867 points/GHz
Test#1 (Memory)
1229 points/GHz
833 points/GHz
TOTAL
6761 points/GHz
5584 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4