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Core i7-920 vs Core 2 Duo E8500


Description
The i7-920 is based on Nehalem Westmere architecture while the E8500 is based on Core.

Using the multithread performance as a reference, the i7-920 gets a score of 47.2 k points while the E8500 gets 31.2 k points.

Summarizing, the i7-920 is 1.5 times faster than the E8500 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106a5
1067a
Core
Bloomfield
Wolfdale
Architecture
Nehalem Westmere
Base frecuency
2.667 GHz
3.167 GHz
Boost frecuency
2.993 GHz
3.167 GHz
Socket
LGA 1366
LGA 775
Cores/Threads
4/8
2/2
TDP
130 W
65 W
Cache L1 (d+i)
32+32 kB
32+32 kB
Cache L2
256 kB
6144 kB
Cache L3
8192 kB
kB
Date
November 2008
August 2008
Mean monothread perf.
16.33k points
19.46k points
Mean multithread perf.
47.2k points
31.21k 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
E8500
Test#1 (Integers)
6.12k
3.65k (x0.6)
Test#2 (FP)
4.76k
8.07k (x1.7)
Test#3 (Generic, ZIP)
2.78k
3.15k (x1.13)
Test#1 (Memory)
2.67k
4.59k (x1.72)
TOTAL
16.33k
19.46k (x1.19)

Multithread

i7-920

E8500
Test#1 (Integers)
19.26k
7.11k (x0.37)
Test#2 (FP)
14.96k
15.79k (x1.06)
Test#3 (Generic, ZIP)
8.05k
6.2k (x0.77)
Test#1 (Memory)
4.92k
2.13k (x0.43)
TOTAL
47.2k
31.21k (x0.66)

Performance/W
i7-920
E8500
Test#1 (Integers)
148 points/W
109 points/W
Test#2 (FP)
115 points/W
243 points/W
Test#3 (Generic, ZIP)
62 points/W
95 points/W
Test#1 (Memory)
38 points/W
33 points/W
TOTAL
363 points/W
480 points/W

Performance/GHz
i7-920
E8500
Test#1 (Integers)
2044 points/GHz
1151 points/GHz
Test#2 (FP)
1591 points/GHz
2549 points/GHz
Test#3 (Generic, ZIP)
930 points/GHz
994 points/GHz
Test#1 (Memory)
891 points/GHz
1450 points/GHz
TOTAL
5457 points/GHz
6144 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