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Core i7-8700k vs Xeon X5670


Description
The i7-8700k is based on Coffee Lake architecture while the X5670 is based on Westmere.

Using the multithread performance as a reference, the i7-8700k gets a score of 295.1 k points while the X5670 gets 103.2 k points.

Summarizing, the i7-8700k is 2.9 times faster than the X5670 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
206c2
Core
Coffee Lake-S
Westmere-EP
Architecture
Base frecuency
3.7 GHz
2.933 GHz
Boost frecuency
4.7 GHz
3.333 GHz
Socket
LGA 1151
LGA 1366
Cores/Threads
6/12
6 /6
TDP
95 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
64 kB
Cache L2
6x256 kB
256 kB
Cache L3
12288 kB
12288 kB
Date
October 2017
March 2010

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
i7-8700k
X5670
Test#1 (Integers)
12920
8389 (-35.07%)
Test#2 (FP)
20678
5603 (-72.90%)
Test#3 (Generic, ZIP)
5295
3350 (-36.73%)
Test#1 (Memory)
12587
3017 (-76.03%)
TOTAL
51480
20359 (-60.45%)

Multithread

i7-8700k

X5670
Test#1 (Integers)
94259
44607 (-52.68%)
Test#2 (FP)
152549
30967 (-79.70%)
Test#3 (Generic, ZIP)
39735
19219 (-51.63%)
Test#1 (Memory)
8527
8426 (-1.19%)
TOTAL
295071
103219 (-65.02%)

Performance/W
i7-8700k
X5670
Test#1 (Integers)
992 points/W
470 points/W
Test#2 (FP)
1606 points/W
326 points/W
Test#3 (Generic, ZIP)
418 points/W
202 points/W
Test#1 (Memory)
90 points/W
89 points/W
TOTAL
3106 points/W
1087 points/W

Performance/GHz
i7-8700k
X5670
Test#1 (Integers)
2749 points/GHz
2517 points/GHz
Test#2 (FP)
4400 points/GHz
1681 points/GHz
Test#3 (Generic, ZIP)
1127 points/GHz
1005 points/GHz
Test#1 (Memory)
2678 points/GHz
905 points/GHz
TOTAL
10953 points/GHz
6108 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. 3.7.9