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Core i7-5820K vs Xeon E3-1220 v3


Description
Both models i7-5820K and E3-1220 v3 are based on Haswell architecture.

"Haswell is known as fourth-generation core too. It uses 22nm Tri-Gate FinFET (non-planar, ""3D"") technology. It includes four arithmetic logic unit (ALU) and three address generation unit (AGU). This generation is able to run Advanced Vector Extensions 2 (AVX2) instruction set among BMI1, BMI2, ABM and FMA3. At this time, Intel used new sockets: LGA 1150 for desktops and BGA1364 for the mobile CPUs."

Using the multithread performance as a reference, the i7-5820K gets a score of 117.4 k points while the E3-1220 v3 gets 76.1 k points.

Summarizing, the i7-5820K is 1.5 times faster than the E3-1220 v3 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306f2
306c3
Core
Haswell-E
Haswell-WS
Architecture
Base frecuency
3.3 GHz
3.1 GHz
Boost frecuency
3.6 GHz
3.5 GHz
Socket
LGA 1150
LGA 1150
Cores/Threads
6/12
4 /4
TDP
140 W
80 W
Cache L1 (d+i)
32+32 kB
64 kB
Cache L2
256 kB
256 kB
Cache L3
15360 kB
8192 kB
Date
September 2014
June 2013
Mean monothread perf.
31.53k points
39.16k points
Mean multithread perf.
129.06k points
140.76k points

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
i7-5820K
E3-1220 v3
Test#1 (Integers)
3.82k
3.45k (x0.9)
Test#2 (FP)
9.64k
9.96k (x1.03)
Test#3 (Generic, ZIP)
4.29k
4.26k (x0.99)
Test#1 (Memory)
3.78k
4.27k (x1.13)
TOTAL
21.53k
21.94k (x1.02)

Multithread

i7-5820K

E3-1220 v3
Test#1 (Integers)
18.07k
14.01k (x0.78)
Test#2 (FP)
64.25k
37.68k (x0.59)
Test#3 (Generic, ZIP)
27.03k
17.05k (x0.63)
Test#1 (Memory)
8.03k
7.35k (x0.91)
TOTAL
117.38k
76.09k (x0.65)

Performance/W
i7-5820K
E3-1220 v3
Test#1 (Integers)
129 points/W
175 points/W
Test#2 (FP)
459 points/W
471 points/W
Test#3 (Generic, ZIP)
193 points/W
213 points/W
Test#1 (Memory)
57 points/W
92 points/W
TOTAL
838 points/W
951 points/W

Performance/GHz
i7-5820K
E3-1220 v3
Test#1 (Integers)
1062 points/GHz
985 points/GHz
Test#2 (FP)
2678 points/GHz
2845 points/GHz
Test#3 (Generic, ZIP)
1191 points/GHz
1217 points/GHz
Test#1 (Memory)
1050 points/GHz
1220 points/GHz
TOTAL
5981 points/GHz
6268 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