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Core 2 Duo E7400 vs Core i7-870


Description
The E7400 is based on Core architecture while the i7-870 is based on Nehalem.

Using the multithread performance as a reference, the E7400 gets a score of 25.7 k points while the i7-870 gets 67.1 k points.

Summarizing, the i7-870 is 2.6 times faster than the E7400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
1067a
106e5
Core
Wolfdale
Lynnfield
Architecture
Base frecuency
2.8 GHz
2.933 GHz
Boost frecuency
2.8 GHz
3.6 GHz
Socket
LGA 775
LGA 1156
Cores/Threads
2/2
4/8
TDP
65 W
95 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
3072 kB
4x256 kB
Cache L3
0 kB
8192 kB
Date
October 2008
September 2009
Mean monothread perf.
14.31k points
18.13k points
Mean multithread perf.
25.71k points
67.13k 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
E7400
i7-870
Test#1 (Integers)
2.54k
1.98k (x0.78)
Test#2 (FP)
6.56k
4.36k (x0.66)
Test#3 (Generic, ZIP)
2.73k
2.24k (x0.82)
Test#1 (Memory)
1.83k
2.72k (x1.48)
TOTAL
13.66k
11.3k (x0.83)

Multithread

E7400

i7-870
Test#1 (Integers)
5.08k
4.46k (x0.88)
Test#2 (FP)
13.07k
13.95k (x1.07)
Test#3 (Generic, ZIP)
5.52k
7.54k (x1.37)
Test#1 (Memory)
1.62k
1.7k (x1.05)
TOTAL
25.29k
27.65k (x1.09)

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
E7400
i7-870
Test#1 (Integers)
3.19k
7.43k (x2.33)
Test#2 (FP)
7.02k
4.96k (x0.71)
Test#3 (Generic, ZIP)
2.71k
2.7k (x0.99)
Test#1 (Memory)
1.39k
3.04k (x2.19)
TOTAL
14.31k
18.13k (x1.27)

Multithread

E7400

i7-870
Test#1 (Integers)
6.02k
27.58k (x4.58)
Test#2 (FP)
13.23k
21.84k (x1.65)
Test#3 (Generic, ZIP)
5.12k
13.55k (x2.64)
Test#1 (Memory)
1.34k
4.16k (x3.11)
TOTAL
25.71k
67.13k (x2.61)

Performance/W
E7400
i7-870
Test#1 (Integers)
93 points/W
290 points/W
Test#2 (FP)
204 points/W
230 points/W
Test#3 (Generic, ZIP)
79 points/W
143 points/W
Test#1 (Memory)
21 points/W
44 points/W
TOTAL
396 points/W
707 points/W

Performance/GHz
E7400
i7-870
Test#1 (Integers)
1139 points/GHz
2063 points/GHz
Test#2 (FP)
2507 points/GHz
1379 points/GHz
Test#3 (Generic, ZIP)
969 points/GHz
750 points/GHz
Test#1 (Memory)
496 points/GHz
845 points/GHz
TOTAL
5111 points/GHz
5037 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