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Core 2 Duo E8400 vs Xeon E3-1225


Description
The E8400 is based on Core architecture while the E3-1225 is based on Sandy Bridge.

Using the multithread performance as a reference, the E8400 gets a score of 27.1 k points while the E3-1225 gets 69 k points.

Summarizing, the E3-1225 is 2.5 times faster than the E8400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
1067a
206a7
Core
Wolfdale
Sandy Bridge
Architecture
Base frecuency
3 GHz
3.1 GHz
Boost frecuency
3 GHz
3.4 GHz
Socket
LGA 775
LGA 1155
Cores/Threads
2/2
4/4
TDP
65 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
6144 kB
4x256 kB
Cache L3
0 kB
6144 kB
Date
January 2008
April 2011
Mean monothread perf.
17.28k points
23.94k points
Mean multithread perf.
27.11k points
68.97k 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
E8400
E3-1225
Test#1 (Integers)
2.47k
2.63k (x1.06)
Test#2 (FP)
6.74k
7.2k (x1.07)
Test#3 (Generic, ZIP)
2.87k
3.71k (x1.29)
Test#1 (Memory)
4.47k
2.55k (x0.57)
TOTAL
16.55k
16.08k (x0.97)

Multithread

E8400

E3-1225
Test#1 (Integers)
4.64k
8.23k (x1.77)
Test#2 (FP)
12.36k
22.82k (x1.85)
Test#3 (Generic, ZIP)
4.86k
11.68k (x2.4)
Test#1 (Memory)
1.96k
2.12k (x1.08)
TOTAL
23.82k
44.85k (x1.88)

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
E8400
E3-1225
Test#1 (Integers)
3.3k
9.65k (x2.93)
Test#2 (FP)
7.28k
7.76k (x1.07)
Test#3 (Generic, ZIP)
2.88k
3.95k (x1.37)
Test#1 (Memory)
3.83k
2.57k (x0.67)
TOTAL
17.28k
23.94k (x1.39)

Multithread

E8400

E3-1225
Test#1 (Integers)
6.3k
30.52k (x4.84)
Test#2 (FP)
13.71k
24.1k (x1.76)
Test#3 (Generic, ZIP)
5.32k
12.01k (x2.26)
Test#1 (Memory)
1.78k
2.34k (x1.32)
TOTAL
27.11k
68.97k (x2.54)

Performance/W
E8400
E3-1225
Test#1 (Integers)
97 points/W
321 points/W
Test#2 (FP)
211 points/W
254 points/W
Test#3 (Generic, ZIP)
82 points/W
126 points/W
Test#1 (Memory)
27 points/W
25 points/W
TOTAL
417 points/W
726 points/W

Performance/GHz
E8400
E3-1225
Test#1 (Integers)
1099 points/GHz
2839 points/GHz
Test#2 (FP)
2426 points/GHz
2283 points/GHz
Test#3 (Generic, ZIP)
959 points/GHz
1162 points/GHz
Test#1 (Memory)
1278 points/GHz
757 points/GHz
TOTAL
5762 points/GHz
7041 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