Xeon E5-4640 vs Core 2 Duo P8400
Description
The E5-4640 is based on Sandy Bridge architecture while the P8400 is based on Core.
Using the multithread performance as a reference, the E5-4640 gets a score of 581.6 k points while the P8400 gets 21 k points.
Summarizing, the E5-4640 is 27.7 times faster than the P8400. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the E5-4640 gets a score of 581.6 k points while the P8400 gets 21 k points.
Summarizing, the E5-4640 is 27.7 times faster than the P8400. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
206d7
10676
Core
Sandy Bridge-EP
Peryn-3M
Base frecuency
2.4 GHz
2.267 GHz
Boost frecuency
2.8 GHz
2.267 GHz
Socket
LGA 2011
Socket P
Cores/Threads
8 /16
2/2
TDP
95 W
25 W
Cache L1 (d+i)
8x32+8x32 kB
2x32 kB
Cache L2
8x256 kB
3072 kB
Cache L3
20480 kB
0 kB
Date
May 2012
July 2008
Mean monothread perf.
13.88k points
11.38k points
Mean multithread perf.
610.16k points
21.02k 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
P8400
Test#1 (Integers)
1.66k
1.78k (x1.07)
Test#2 (FP)
5.26k
4.95k (x0.94)
Test#3 (Generic, ZIP)
2.13k
2.08k (x0.98)
Test#1 (Memory)
2.53k
1.44k (x0.57)
TOTAL
11.58k
10.24k (x0.88)
Multithread
E5-4640
P8400
Test#1 (Integers)
77.64k
3.53k (x0.05)
Test#2 (FP)
212.2k
9.75k (x0.05)
Test#3 (Generic, ZIP)
113.11k
4.07k (x0.04)
Test#1 (Memory)
7.54k
1.44k (x0.19)
TOTAL
410.48k
18.79k (x0.05)
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
P8400
Test#1 (Integers)
6.19k
2.43k (x0.39)
Test#2 (FP)
5.89k
5.4k (x0.92)
Test#3 (Generic, ZIP)
2.11k
2.13k (x1.01)
Test#1 (Memory)
2.51k
1.43k (x0.57)
TOTAL
16.7k
11.38k (x0.68)
Multithread
E5-4640
P8400
Test#1 (Integers)
244.88k
4.81k (x0.02)
Test#2 (FP)
215.35k
10.58k (x0.05)
Test#3 (Generic, ZIP)
114.64k
4.18k (x0.04)
Test#1 (Memory)
6.76k
1.45k (x0.21)
TOTAL
581.63k
21.02k (x0.04)
Performance/W
E5-4640
P8400
Test#1 (Integers)
2578 points/W
193 points/W
Test#2 (FP)
2267 points/W
423 points/W
Test#3 (Generic, ZIP)
1207 points/W
167 points/W
Test#1 (Memory)
71 points/W
58 points/W
TOTAL
6122 points/W
841 points/W
Performance/GHz
E5-4640
P8400
Test#1 (Integers)
2210 points/GHz
1071 points/GHz
Test#2 (FP)
2105 points/GHz
2383 points/GHz
Test#3 (Generic, ZIP)
755 points/GHz
938 points/GHz
Test#1 (Memory)
895 points/GHz
629 points/GHz
TOTAL
5966 points/GHz
5022 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