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Xeon E5-4640 vs Core i7-4790K


Description
The E5-4640 is based on Sandy Bridge architecture while the i7-4790K is based on Haswell.

Using the multithread performance as a reference, the E5-4640 gets a score of 610.2 k points while the i7-4790K gets 164.4 k points.

Summarizing, the E5-4640 is 3.7 times faster than the i7-4790K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206d7
306c3
Core
Sandy Bridge-EP
Haswell
Architecture
Base frecuency
2.4 GHz
4 GHz
Boost frecuency
2.8 GHz
4.4 GHz
Socket
LGA 2011
LGA 1150
Cores/Threads
8 /16
4/8
TDP
95 W
88 W
Cache L1 (d+i)
8x32+8x32 kB
32+32 kB
Cache L2
8x256 kB
256 kB
Cache L3
20480 kB
8192 kB
Date
May 2012
May 2014
Mean monothread perf.
13.88k points
52.47k points
Mean multithread perf.
610.16k points
215.47k 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
E5-4640
i7-4790K
Test#1 (Integers)
1.66k
5.06k (x3.04)
Test#2 (FP)
5.26k
12.63k (x2.4)
Test#3 (Generic, ZIP)
2.13k
5.81k (x2.73)
Test#1 (Memory)
2.53k
4.96k (x1.96)
TOTAL
11.58k
28.47k (x2.46)

Multithread

E5-4640

i7-4790K
Test#1 (Integers)
77.64k
18.28k (x0.24)
Test#2 (FP)
212.2k
64.07k (x0.3)
Test#3 (Generic, ZIP)
113.11k
27.52k (x0.24)
Test#1 (Memory)
7.54k
7.97k (x1.06)
TOTAL
410.48k
117.84k (x0.29)

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
E5-4640
i7-4790K
Test#1 (Integers)
6.19k
15.6k (x2.52)
Test#2 (FP)
5.89k
13.92k (x2.36)
Test#3 (Generic, ZIP)
2.11k
6.12k (x2.9)
Test#1 (Memory)
2.51k
5k (x1.99)
TOTAL
16.7k
40.65k (x2.43)

Multithread

E5-4640

i7-4790K
Test#1 (Integers)
244.88k
65.48k (x0.27)
Test#2 (FP)
215.35k
63.29k (x0.29)
Test#3 (Generic, ZIP)
114.64k
27.93k (x0.24)
Test#1 (Memory)
6.76k
7.84k (x1.16)
TOTAL
581.63k
164.54k (x0.28)

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
E5-4640
i7-4790K
Test#1 (Integers)
5.01k
15.8k (x3.15)
Test#2 (FP)
4.5k
14.35k (x3.19)
Test#3 (Generic, ZIP)
2.18k
5.97k (x2.75)
Test#1 (Memory)
2.19k
5.17k (x2.36)
TOTAL
13.88k
41.29k (x2.97)

Multithread

E5-4640

i7-4790K
Test#1 (Integers)
251.29k
62.79k (x0.25)
Test#2 (FP)
236.61k
66.48k (x0.28)
Test#3 (Generic, ZIP)
114.89k
26.35k (x0.23)
Test#1 (Memory)
7.36k
8.74k (x1.19)
TOTAL
610.16k
164.36k (x0.27)

Performance/W
E5-4640
i7-4790K
Test#1 (Integers)
2645 points/W
713 points/W
Test#2 (FP)
2491 points/W
755 points/W
Test#3 (Generic, ZIP)
1209 points/W
299 points/W
Test#1 (Memory)
78 points/W
99 points/W
TOTAL
6423 points/W
1868 points/W

Performance/GHz
E5-4640
i7-4790K
Test#1 (Integers)
1790 points/GHz
3591 points/GHz
Test#2 (FP)
1609 points/GHz
3260 points/GHz
Test#3 (Generic, ZIP)
777 points/GHz
1358 points/GHz
Test#1 (Memory)
782 points/GHz
1174 points/GHz
TOTAL
4957 points/GHz
9383 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