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Core i7-7700K vs i7-7700


Description
Both models i7-7700K and i7-7700 are based on Kaby Lake architecture.

The first Kaby Lake CPU was released in August 2016. It uses a 14 nm process and was the first architecture in breaking the previous tick-tock model. Actually, it is not that different from the preceding Skylake: it has 64kB of L1 cache and 256kB L2 cache per core.

Using the multithread performance as a reference, the i7-7700K gets a score of 289.9 k points while the i7-7700 gets 257.5 k points.

Summarizing, the i7-7700K is 1.1 times faster than the i7-7700 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
906e9
Core
Kaby Lake-S
Kaby Lake-S
Architecture
Base frecuency
4.2 GHz
3.6 GHz
Boost frecuency
4.5 GHz
4.2 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/8
4/8
TDP
95 W
65 W
Cache L1 (d+i)
32+32 kB
32+32 kB
Cache L2
256 kB
256 kB
Cache L3
8192 kB
8192 kB
Date
September 2016
September 2016
Mean monothread perf.
76.98k points
67.33k points
Mean multithread perf.
289.9k points
257.52k 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
i7-7700K
i7-7700
Test#1 (Integers)
4.63k
4.23k (x0.91)
Test#2 (FP)
18.92k
16.76k (x0.89)
Test#3 (Generic, ZIP)
6.22k
5.42k (x0.87)
Test#1 (Memory)
13.92k
12.23k (x0.88)
TOTAL
43.7k
38.64k (x0.88)

Multithread

i7-7700K

i7-7700
Test#1 (Integers)
18.53k
16.71k (x0.9)
Test#2 (FP)
86.49k
73.1k (x0.85)
Test#3 (Generic, ZIP)
28.78k
25.76k (x0.9)
Test#1 (Memory)
9.67k
7.12k (x0.74)
TOTAL
143.47k
122.68k (x0.86)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-7700K
i7-7700
Test#1 (Integers)
17.55k
15.34k (x0.87)
Test#2 (FP)
27.82k
23.41k (x0.84)
Test#3 (Generic, ZIP)
6.8k
5.87k (x0.86)
Test#1 (Memory)
14.83k
11.07k (x0.75)
TOTAL
67k
55.69k (x0.83)

Multithread

i7-7700K

i7-7700
Test#1 (Integers)
68.4k
62.68k (x0.92)
Test#2 (FP)
118.8k
105.24k (x0.89)
Test#3 (Generic, ZIP)
33.34k
26.35k (x0.79)
Test#1 (Memory)
17.43k
5.79k (x0.33)
TOTAL
237.97k
200.07k (x0.84)

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-7700K
i7-7700
Test#1 (Integers)
30.47k
26.7k (x0.88)
Test#2 (FP)
26.94k
23.7k (x0.88)
Test#3 (Generic, ZIP)
6.25k
5.46k (x0.87)
Test#1 (Memory)
13.32k
11.48k (x0.86)
TOTAL
76.98k
67.33k (x0.87)

Multithread

i7-7700K

i7-7700
Test#1 (Integers)
127.81k
115.97k (x0.91)
Test#2 (FP)
123.7k
108.43k (x0.88)
Test#3 (Generic, ZIP)
29.34k
26.28k (x0.9)
Test#1 (Memory)
9.05k
6.85k (x0.76)
TOTAL
289.9k
257.52k (x0.89)

Performance/W
i7-7700K
i7-7700
Test#1 (Integers)
1345 points/W
1784 points/W
Test#2 (FP)
1302 points/W
1668 points/W
Test#3 (Generic, ZIP)
309 points/W
404 points/W
Test#1 (Memory)
95 points/W
105 points/W
TOTAL
3052 points/W
3962 points/W

Performance/GHz
i7-7700K
i7-7700
Test#1 (Integers)
6770 points/GHz
6356 points/GHz
Test#2 (FP)
5987 points/GHz
5643 points/GHz
Test#3 (Generic, ZIP)
1389 points/GHz
1300 points/GHz
Test#1 (Memory)
2960 points/GHz
2733 points/GHz
TOTAL
17106 points/GHz
16032 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