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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 291.1 k points while the i7-7700 gets 262.2 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

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)
4629
4303 (-7.06%)
Test#2 (FP)
18925
17621 (-6.89%)
Test#3 (Generic, ZIP)
6221
5536 (-11.02%)
Test#1 (Memory)
13922
11726 (-15.78%)
TOTAL
43698
39185 (-10.33%)

Multithread

i7-7700K

i7-7700
Test#1 (Integers)
18529
16796 (-9.36%)
Test#2 (FP)
86487
78082 (-9.72%)
Test#3 (Generic, ZIP)
28778
26792 (-6.90%)
Test#1 (Memory)
9674
4103 (-57.59%)
TOTAL
143468
125773 (-12.33%)

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)
17549
15274 (-12.96%)
Test#2 (FP)
27822
23432 (-15.78%)
Test#3 (Generic, ZIP)
6796
5940 (-12.59%)
Test#1 (Memory)
14832
10451 (-29.53%)
TOTAL
66999
55098 (-17.76%)

Multithread

i7-7700K

i7-7700
Test#1 (Integers)
68395
63017 (-7.86%)
Test#2 (FP)
118805
105046 (-11.58%)
Test#3 (Generic, ZIP)
33336
26438 (-20.69%)
Test#1 (Memory)
17434
4035 (-76.86%)
TOTAL
237970
198535 (-16.57%)

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)
30864
27175 (-11.95%)
Test#2 (FP)
27262
25094 (-7.95%)
Test#3 (Generic, ZIP)
6421
5794 (-9.76%)
Test#1 (Memory)
13994
12848 (-8.20%)
TOTAL
78541
70911 (-9.71%)

Multithread

i7-7700K

i7-7700
Test#1 (Integers)
129531
120948 (-6.63%)
Test#2 (FP)
122200
109758 (-10.18%)
Test#3 (Generic, ZIP)
29617
27356 (-7.63%)
Test#1 (Memory)
9751
4133 (-57.62%)
TOTAL
291099
262195 (-9.93%)

Performance/W
i7-7700K
i7-7700
Test#1 (Integers)
1363 points/W
1861 points/W
Test#2 (FP)
1286 points/W
1689 points/W
Test#3 (Generic, ZIP)
312 points/W
421 points/W
Test#1 (Memory)
103 points/W
64 points/W
TOTAL
3064 points/W
4034 points/W

Performance/GHz
i7-7700K
i7-7700
Test#1 (Integers)
6859 points/GHz
6470 points/GHz
Test#2 (FP)
6058 points/GHz
5975 points/GHz
Test#3 (Generic, ZIP)
1427 points/GHz
1380 points/GHz
Test#1 (Memory)
3110 points/GHz
3059 points/GHz
TOTAL
17453 points/GHz
16884 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