Xeon E3-1225 vs E5645
Description
The E3-1225 is based on Sandy Bridge architecture while the E5645 is based on Westmere.
Using the multithread performance as a reference, the E3-1225 gets a score of 69 k points while the E5645 gets 77 k points.
Summarizing, the E5645 is 1.1 times faster than the E3-1225. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the E3-1225 gets a score of 69 k points while the E5645 gets 77 k points.
Summarizing, the E5645 is 1.1 times faster than the E3-1225. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
206a7
206c2
Core
Sandy Bridge
Westmere-EP
Base frecuency
3.1 GHz
2.4 GHz
Boost frecuency
3.4 GHz
2.8 GHz
Socket
LGA 1155
LGA 1366
Cores/Threads
4/4
6 /6
TDP
95 W
80 W
Cache L1 (d+i)
4x32+4x32 kB
64 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
12288 kB
Date
April 2011
March 2010
Mean monothread perf.
23.94k points
15.64k points
Mean multithread perf.
68.97k points
76.96k 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
E3-1225
E5645
Test#1 (Integers)
2.63k
1.78k (x0.68)
Test#2 (FP)
7.2k
3.91k (x0.54)
Test#3 (Generic, ZIP)
3.71k
2.52k (x0.68)
Test#1 (Memory)
2.55k
2.42k (x0.95)
TOTAL
16.08k
10.64k (x0.66)
Multithread
E3-1225
E5645
Test#1 (Integers)
8.23k
9.67k (x1.17)
Test#2 (FP)
22.82k
22.92k (x1)
Test#3 (Generic, ZIP)
11.68k
14.31k (x1.22)
Test#1 (Memory)
2.12k
3.81k (x1.8)
TOTAL
44.85k
50.7k (x1.13)
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
E3-1225
E5645
Test#1 (Integers)
9.65k
6.47k (x0.67)
Test#2 (FP)
7.76k
4.4k (x0.57)
Test#3 (Generic, ZIP)
3.95k
2.43k (x0.61)
Test#1 (Memory)
2.57k
2.33k (x0.91)
TOTAL
23.94k
15.64k (x0.65)
Multithread
E3-1225
E5645
Test#1 (Integers)
30.52k
34.43k (x1.13)
Test#2 (FP)
24.1k
24.23k (x1.01)
Test#3 (Generic, ZIP)
12.01k
14.48k (x1.21)
Test#1 (Memory)
2.34k
3.81k (x1.63)
TOTAL
68.97k
76.96k (x1.12)
Performance/W
E3-1225
E5645
Test#1 (Integers)
321 points/W
430 points/W
Test#2 (FP)
254 points/W
303 points/W
Test#3 (Generic, ZIP)
126 points/W
181 points/W
Test#1 (Memory)
25 points/W
48 points/W
TOTAL
726 points/W
962 points/W
Performance/GHz
E3-1225
E5645
Test#1 (Integers)
2839 points/GHz
2311 points/GHz
Test#2 (FP)
2283 points/GHz
1573 points/GHz
Test#3 (Generic, ZIP)
1162 points/GHz
867 points/GHz
Test#1 (Memory)
757 points/GHz
833 points/GHz
TOTAL
7041 points/GHz
5584 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