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Xeon E5-2670 v3 vs Core 2 Duo E8400


Description
The E5-2670 v3 is based on Haswell architecture while the E8400 is based on Core.

Using the multithread performance as a reference, the E5-2670 v3 gets a score of 325.8 k points while the E8400 gets 27.1 k points.

Summarizing, the E5-2670 v3 is 12 times faster than the E8400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306f2
1067a
Core
Haswell-EP
Wolfdale
Architecture
Base frecuency
2.3 GHz
3 GHz
Boost frecuency
3.1 GHz
3 GHz
Socket
LGA 2011-3
LGA 775
Cores/Threads
12/24
2/2
TDP
120 W
65 W
Cache L1 (d+i)
12x32+12x32 kB
2x32+2x32 kB
Cache L2
12x256 kB
6144 kB
Cache L3
30720 kB
0 kB
Date
September 2014
January 2008
Mean monothread perf.
36.41k points
17.28k points
Mean multithread perf.
452.9k points
27.11k 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
E5-2670 v3
E8400
Test#1 (Integers)
3.52k
2.47k (x0.7)
Test#2 (FP)
8.68k
6.74k (x0.78)
Test#3 (Generic, ZIP)
2.83k
2.87k (x1.01)
Test#1 (Memory)
3.13k
4.47k (x1.43)
TOTAL
18.17k
16.55k (x0.91)

Multithread

E5-2670 v3

E8400
Test#1 (Integers)
32.7k
4.64k (x0.14)
Test#2 (FP)
105.18k
12.36k (x0.12)
Test#3 (Generic, ZIP)
35.18k
4.86k (x0.14)
Test#1 (Memory)
9.54k
1.96k (x0.21)
TOTAL
182.59k
23.82k (x0.13)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
E5-2670 v3
E8400
Test#1 (Integers)
11.08k
3.3k (x0.3)
Test#2 (FP)
9.57k
7.28k (x0.76)
Test#3 (Generic, ZIP)
3.18k
2.88k (x0.9)
Test#1 (Memory)
3.28k
3.83k (x1.17)
TOTAL
27.11k
17.28k (x0.64)

Multithread

E5-2670 v3

E8400
Test#1 (Integers)
139.07k
6.3k (x0.05)
Test#2 (FP)
133.47k
13.71k (x0.1)
Test#3 (Generic, ZIP)
46.6k
5.32k (x0.11)
Test#1 (Memory)
6.65k
1.78k (x0.27)
TOTAL
325.78k
27.11k (x0.08)

Performance/W
E5-2670 v3
E8400
Test#1 (Integers)
1159 points/W
97 points/W
Test#2 (FP)
1112 points/W
211 points/W
Test#3 (Generic, ZIP)
388 points/W
82 points/W
Test#1 (Memory)
55 points/W
27 points/W
TOTAL
2715 points/W
417 points/W

Performance/GHz
E5-2670 v3
E8400
Test#1 (Integers)
3573 points/GHz
1099 points/GHz
Test#2 (FP)
3087 points/GHz
2426 points/GHz
Test#3 (Generic, ZIP)
1027 points/GHz
959 points/GHz
Test#1 (Memory)
1059 points/GHz
1278 points/GHz
TOTAL
8745 points/GHz
5762 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