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Xeon E5472 vs Core i7-920


Description
The E5472 is based on Core architecture while the i7-920 is based on Nehalem Westmere.

Using the multithread performance as a reference, the E5472 gets a score of 48.6 k points while the i7-920 gets 47.2 k points.

Summarizing, the E5472 is 1 times faster than the i7-920 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
10676
106a5
Core
Harpertown
Bloomfield
Architecture
Core
Base frecuency
3 GHz
2.667 GHz
Boost frecuency
3 GHz
2.993 GHz
Socket
LGA-771
LGA 1366
Cores/Threads
4/4
4/8
TDP
80 W
130 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
2x6144 kB
256 kB
Cache L3
kB
8192 kB
Date
November 2007
November 2008
Mean monothread perf.
16.62k points
16.33k points
Mean multithread perf.
48.62k points
47.2k 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
E5472
i7-920
Test#1 (Integers)
2.29k
1.97k (x0.86)
Test#2 (FP)
5.85k
4.43k (x0.76)
Test#3 (Generic, ZIP)
2.44k
2.75k (x1.13)
Test#1 (Memory)
4.81k
2.53k (x0.53)
TOTAL
15.39k
11.68k (x0.76)

Multithread

E5472

i7-920
Test#1 (Integers)
9.06k
7.71k (x0.85)
Test#2 (FP)
23.09k
18.81k (x0.81)
Test#3 (Generic, ZIP)
9.7k
13.76k (x1.42)
Test#1 (Memory)
2.53k
5.07k (x2)
TOTAL
44.38k
45.34k (x1.02)

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
E5472
i7-920
Test#1 (Integers)
2.88k
6.12k (x2.12)
Test#2 (FP)
6.36k
4.76k (x0.75)
Test#3 (Generic, ZIP)
2.55k
2.78k (x1.09)
Test#1 (Memory)
4.83k
2.67k (x0.55)
TOTAL
16.62k
16.33k (x0.98)

Multithread

E5472

i7-920
Test#1 (Integers)
11.19k
19.26k (x1.72)
Test#2 (FP)
24.85k
14.96k (x0.6)
Test#3 (Generic, ZIP)
10.04k
8.05k (x0.8)
Test#1 (Memory)
2.54k
4.92k (x1.94)
TOTAL
48.62k
47.2k (x0.97)

Performance/W
E5472
i7-920
Test#1 (Integers)
140 points/W
148 points/W
Test#2 (FP)
311 points/W
115 points/W
Test#3 (Generic, ZIP)
125 points/W
62 points/W
Test#1 (Memory)
32 points/W
38 points/W
TOTAL
608 points/W
363 points/W

Performance/GHz
E5472
i7-920
Test#1 (Integers)
961 points/GHz
2044 points/GHz
Test#2 (FP)
2119 points/GHz
1591 points/GHz
Test#3 (Generic, ZIP)
850 points/GHz
930 points/GHz
Test#1 (Memory)
1610 points/GHz
891 points/GHz
TOTAL
5539 points/GHz
5457 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