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Core i7-5820K vs FX 8320


Description
The i7-5820K is based on Haswell architecture while the 8320 is based on Piledriver.

Using the multithread performance as a reference, the i7-5820K gets a score of 129.1 k points while the 8320 gets 103.2 k points.

Summarizing, the i7-5820K is 1.3 times faster than the 8320. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306f2
600f20
Core
Haswell-E
Vishera
Architecture
Base frecuency
3.3 GHz
3.5 GHz
Boost frecuency
3.6 GHz
4 GHz
Socket
LGA 1150
Socket AM3+
Cores/Threads
6/12
8/8
TDP
140 W
125 W
Cache L1 (d+i)
32+32 kB
kB
Cache L2
256 kB
4x2048 kB
Cache L3
15360 kB
8192 kB
Date
September 2014
October 2012
Mean monothread perf.
31.53k points
16.68k points
Mean multithread perf.
129.06k points
103.21k 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
i7-5820K
8320
Test#1 (Integers)
12.03k
5.35k (x0.44)
Test#2 (FP)
11.23k
5.14k (x0.46)
Test#3 (Generic, ZIP)
4.55k
2.15k (x0.47)
Test#1 (Memory)
3.72k
4.04k (x1.09)
TOTAL
31.53k
16.68k (x0.53)

Multithread

i7-5820K

8320
Test#1 (Integers)
49.48k
36.79k (x0.74)
Test#2 (FP)
52.21k
40.2k (x0.77)
Test#3 (Generic, ZIP)
19.7k
19.57k (x0.99)
Test#1 (Memory)
7.67k
6.66k (x0.87)
TOTAL
129.06k
103.21k (x0.8)

Performance/W
i7-5820K
8320
Test#1 (Integers)
353 points/W
294 points/W
Test#2 (FP)
373 points/W
322 points/W
Test#3 (Generic, ZIP)
141 points/W
157 points/W
Test#1 (Memory)
55 points/W
53 points/W
TOTAL
922 points/W
826 points/W

Performance/GHz
i7-5820K
8320
Test#1 (Integers)
3343 points/GHz
1339 points/GHz
Test#2 (FP)
3119 points/GHz
1285 points/GHz
Test#3 (Generic, ZIP)
1264 points/GHz
537 points/GHz
Test#1 (Memory)
1033 points/GHz
1010 points/GHz
TOTAL
8759 points/GHz
4171 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