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Core i7-4820K vs i7-4790K


Description
The i7-4820K is based on Ivy Bridge architecture while the i7-4790K is based on Haswell.

Using the multithread performance as a reference, the i7-4820K gets a score of 134.1 k points while the i7-4790K gets 164.4 k points.

Summarizing, the i7-4790K is 1.2 times faster than the i7-4820K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306e4
306c3
Core
Ivy Bridge -E
Haswell
Architecture
Base frecuency
3.7 GHz
4 GHz
Boost frecuency
3.9 GHz
4.4 GHz
Socket
LGA 1155
LGA 1150
Cores/Threads
4/8
4/8
TDP
130 W
88 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 2013
May 2014
Mean monothread perf.
32.49k points
52.47k points
Mean multithread perf.
134.08k points
215.47k points

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
i7-4820K
i7-4790K
Test#1 (Integers)
11.85k
15.8k (x1.33)
Test#2 (FP)
11.84k
14.35k (x1.21)
Test#3 (Generic, ZIP)
4.69k
5.97k (x1.28)
Test#1 (Memory)
4.12k
5.17k (x1.25)
TOTAL
32.49k
41.29k (x1.27)

Multithread

i7-4820K

i7-4790K
Test#1 (Integers)
47.65k
62.79k (x1.32)
Test#2 (FP)
54.81k
66.48k (x1.21)
Test#3 (Generic, ZIP)
21.56k
26.35k (x1.22)
Test#1 (Memory)
10.05k
8.74k (x0.87)
TOTAL
134.08k
164.36k (x1.23)

Performance/W
i7-4820K
i7-4790K
Test#1 (Integers)
367 points/W
713 points/W
Test#2 (FP)
422 points/W
755 points/W
Test#3 (Generic, ZIP)
166 points/W
299 points/W
Test#1 (Memory)
77 points/W
99 points/W
TOTAL
1031 points/W
1868 points/W

Performance/GHz
i7-4820K
i7-4790K
Test#1 (Integers)
3039 points/GHz
3591 points/GHz
Test#2 (FP)
3035 points/GHz
3260 points/GHz
Test#3 (Generic, ZIP)
1201 points/GHz
1358 points/GHz
Test#1 (Memory)
1056 points/GHz
1174 points/GHz
TOTAL
8331 points/GHz
9383 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