Core i7-920 vs Core 2 Duo E7400
Description
The i7-920 is based on Nehalem Westmere architecture while the E7400 is based on Core.
Using the multithread performance as a reference, the i7-920 gets a score of 47.2 k points while the E7400 gets 25.7 k points.
Summarizing, the i7-920 is 1.8 times faster than the E7400 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-920 gets a score of 47.2 k points while the E7400 gets 25.7 k points.
Summarizing, the i7-920 is 1.8 times faster than the E7400 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
106a5
1067a
Core
Bloomfield
Wolfdale
Base frecuency
2.667 GHz
2.8 GHz
Boost frecuency
2.993 GHz
2.8 GHz
Socket
LGA 1366
LGA 775
Cores/Threads
4/8
2/2
TDP
130 W
65 W
Cache L1 (d+i)
32+32 kB
32+32 kB
Cache L2
256 kB
3072 kB
Cache L3
8192 kB
0 kB
Date
November 2008
October 2008
Mean monothread perf.
16.33k points
14.31k points
Mean multithread perf.
47.2k points
25.71k 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
i7-920
E7400
Test#1 (Integers)
1.97k
2.54k (x1.29)
Test#2 (FP)
4.43k
6.56k (x1.48)
Test#3 (Generic, ZIP)
2.75k
2.73k (x0.99)
Test#1 (Memory)
2.53k
1.83k (x0.72)
TOTAL
11.68k
13.66k (x1.17)
Multithread
i7-920
E7400
Test#1 (Integers)
7.71k
5.08k (x0.66)
Test#2 (FP)
18.81k
13.07k (x0.69)
Test#3 (Generic, ZIP)
13.76k
5.52k (x0.4)
Test#1 (Memory)
5.07k
1.62k (x0.32)
TOTAL
45.34k
25.29k (x0.56)
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
i7-920
E7400
Test#1 (Integers)
6.12k
3.19k (x0.52)
Test#2 (FP)
4.76k
7.02k (x1.47)
Test#3 (Generic, ZIP)
2.78k
2.71k (x0.97)
Test#1 (Memory)
2.67k
1.39k (x0.52)
TOTAL
16.33k
14.31k (x0.88)
Multithread
i7-920
E7400
Test#1 (Integers)
19.26k
6.02k (x0.31)
Test#2 (FP)
14.96k
13.23k (x0.88)
Test#3 (Generic, ZIP)
8.05k
5.12k (x0.64)
Test#1 (Memory)
4.92k
1.34k (x0.27)
TOTAL
47.2k
25.71k (x0.54)
Performance/W
i7-920
E7400
Test#1 (Integers)
148 points/W
93 points/W
Test#2 (FP)
115 points/W
204 points/W
Test#3 (Generic, ZIP)
62 points/W
79 points/W
Test#1 (Memory)
38 points/W
21 points/W
TOTAL
363 points/W
396 points/W
Performance/GHz
i7-920
E7400
Test#1 (Integers)
2044 points/GHz
1139 points/GHz
Test#2 (FP)
1591 points/GHz
2507 points/GHz
Test#3 (Generic, ZIP)
930 points/GHz
969 points/GHz
Test#1 (Memory)
891 points/GHz
496 points/GHz
TOTAL
5457 points/GHz
5111 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4