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Core i7-920 vs Xeon W3520


Description
The i7-920 is based on Nehalem Westmere architecture while the W3520 is based on Nehalem.

Using the multithread performance as a reference, the i7-920 gets a score of 47.2 k points while the W3520 gets 73.2 k points.

Summarizing, the W3520 is 1.6 times faster than the i7-920 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106a5
106a5
Core
Bloomfield
Nehalem-WS
Architecture
Nehalem Westmere
Base frecuency
2.667 GHz
2.667 GHz
Boost frecuency
2.993 GHz
2.933 GHz
Socket
LGA 1366
LGA 1366
Cores/Threads
4/8
4 /8
TDP
130 W
130 W
Cache L1 (d+i)
32+32 kB
4x32+x4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
8192 kB
8192 kB
Date
November 2008
March 2009
Mean monothread perf.
16.33k points
17.96k points
Mean multithread perf.
47.2k points
73.16k points

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
W3520
Test#1 (Integers)
6.12k
7.35k (x1.2)
Test#2 (FP)
4.76k
4.89k (x1.03)
Test#3 (Generic, ZIP)
2.78k
2.9k (x1.04)
Test#1 (Memory)
2.67k
2.82k (x1.06)
TOTAL
16.33k
17.96k (x1.1)

Multithread

i7-920

W3520
Test#1 (Integers)
19.26k
29.69k (x1.54)
Test#2 (FP)
14.96k
22.26k (x1.49)
Test#3 (Generic, ZIP)
8.05k
14.91k (x1.85)
Test#1 (Memory)
4.92k
6.29k (x1.28)
TOTAL
47.2k
73.16k (x1.55)

Performance/W
i7-920
W3520
Test#1 (Integers)
148 points/W
228 points/W
Test#2 (FP)
115 points/W
171 points/W
Test#3 (Generic, ZIP)
62 points/W
115 points/W
Test#1 (Memory)
38 points/W
48 points/W
TOTAL
363 points/W
563 points/W

Performance/GHz
i7-920
W3520
Test#1 (Integers)
2044 points/GHz
2506 points/GHz
Test#2 (FP)
1591 points/GHz
1669 points/GHz
Test#3 (Generic, ZIP)
930 points/GHz
989 points/GHz
Test#1 (Memory)
891 points/GHz
960 points/GHz
TOTAL
5457 points/GHz
6123 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