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A10 7700K vs FX 8120


Description
The 7700K is based on Steamroller architecture while the 8120 is based on Bulldozer.

Using the multithread performance as a reference, the 7700K gets a score of 57.9 k points while the 8120 gets 70.8 k points.

Summarizing, the 8120 is 1.2 times faster than the 7700K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
630f01
600f12
Core
Kaveri
Zambezi
Architecture
Base frecuency
3.4 GHz
3.1 GHz
Boost frecuency
3.8 GHz
4 GHz
Socket
Socket FM2+
Socket AM3+
Cores/Threads
4/4
8/8
TDP
95 W
125 W
Cache L1 (d+i)
kB
4x64+8x16 kB
Cache L2
2X2048 kB
4x2048 kB
Cache L3
0 kB
8192 kB
Date
January 2014
October 2011
Mean monothread perf.
21.38k points
23.5k points
Mean multithread perf.
57.89k points
70.78k 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
7700K
8120
Test#1 (Integers)
7.33k
9.31k (x1.27)
Test#2 (FP)
7.99k
6.85k (x0.86)
Test#3 (Generic, ZIP)
2.91k
2.77k (x0.95)
Test#1 (Memory)
3.15k
4.58k (x1.45)
TOTAL
21.38k
23.5k (x1.1)

Multithread

7700K

8120
Test#1 (Integers)
23.06k
25.84k (x1.12)
Test#2 (FP)
20.11k
28.49k (x1.42)
Test#3 (Generic, ZIP)
10.44k
13.84k (x1.33)
Test#1 (Memory)
4.28k
2.61k (x0.61)
TOTAL
57.89k
70.78k (x1.22)

Performance/W
7700K
8120
Test#1 (Integers)
243 points/W
207 points/W
Test#2 (FP)
212 points/W
228 points/W
Test#3 (Generic, ZIP)
110 points/W
111 points/W
Test#1 (Memory)
45 points/W
21 points/W
TOTAL
609 points/W
566 points/W

Performance/GHz
7700K
8120
Test#1 (Integers)
1929 points/GHz
2327 points/GHz
Test#2 (FP)
2101 points/GHz
1712 points/GHz
Test#3 (Generic, ZIP)
765 points/GHz
693 points/GHz
Test#1 (Memory)
830 points/GHz
1144 points/GHz
TOTAL
5625 points/GHz
5876 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