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FX 8120 vs Core i7-3930K


Description
The 8120 is based on Bulldozer architecture while the i7-3930K is based on Sandy Bridge.

Using the multithread performance as a reference, the 8120 gets a score of 70.8 k points while the i7-3930K gets 155.9 k points.

Summarizing, the i7-3930K is 2.2 times faster than the 8120. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
600f12
206d7
Core
Zambezi
Sandy Bridge-E
Architecture
Base frecuency
3.1 GHz
3.2 GHz
Boost frecuency
4 GHz
3.8 GHz
Socket
Socket AM3+
LGA 2011
Cores/Threads
8/8
6/12
TDP
125 W
130 W
Cache L1 (d+i)
4x64+8x16 kB
32+32 kB
Cache L2
4x2048 kB
256 kB
Cache L3
8192 kB
12288 kB
Date
October 2011
November 2011
Mean monothread perf.
23.5k points
27.76k points
Mean multithread perf.
70.78k points
155.86k 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
8120
i7-3930K
Test#1 (Integers)
9.31k
10.08k (x1.08)
Test#2 (FP)
6.85k
9.06k (x1.32)
Test#3 (Generic, ZIP)
2.77k
4.45k (x1.61)
Test#1 (Memory)
4.58k
4.16k (x0.91)
TOTAL
23.5k
27.76k (x1.18)

Multithread

8120

i7-3930K
Test#1 (Integers)
25.84k
62.22k (x2.41)
Test#2 (FP)
28.49k
60.25k (x2.11)
Test#3 (Generic, ZIP)
13.84k
30.42k (x2.2)
Test#1 (Memory)
2.61k
2.97k (x1.14)
TOTAL
70.78k
155.86k (x2.2)

Performance/W
8120
i7-3930K
Test#1 (Integers)
207 points/W
479 points/W
Test#2 (FP)
228 points/W
463 points/W
Test#3 (Generic, ZIP)
111 points/W
234 points/W
Test#1 (Memory)
21 points/W
23 points/W
TOTAL
566 points/W
1199 points/W

Performance/GHz
8120
i7-3930K
Test#1 (Integers)
2327 points/GHz
2653 points/GHz
Test#2 (FP)
1712 points/GHz
2383 points/GHz
Test#3 (Generic, ZIP)
693 points/GHz
1172 points/GHz
Test#1 (Memory)
1144 points/GHz
1096 points/GHz
TOTAL
5876 points/GHz
7304 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