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Core 2 Duo L7500 vs Core i7-870


Description
The L7500 is based on Core architecture while the i7-870 is based on Nehalem.

Using the multithread performance as a reference, the L7500 gets a score of 10.6 k points while the i7-870 gets 67.1 k points.

Summarizing, the i7-870 is 6.3 times faster than the L7500. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
6fa
106e5
Core
Merom
Lynnfield
Architecture
Base frecuency
1.6 GHz
2.933 GHz
Boost frecuency
1.6 GHz
3.6 GHz
Socket
BGA 479
LGA 1156
Cores/Threads
2/2
4/8
TDP
17 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
4096 kB
4x256 kB
Cache L3
0 kB
8192 kB
Date
October 2006
September 2009
Mean monothread perf.
6.74k points
18.13k points
Mean multithread perf.
10.65k points
67.13k 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
L7500
i7-870
Test#1 (Integers)
1.58k
1.98k (x1.25)
Test#2 (FP)
1.59k
4.36k (x2.74)
Test#3 (Generic, ZIP)
1.51k
2.24k (x1.48)
Test#1 (Memory)
1.7k
2.72k (x1.6)
TOTAL
6.39k
11.3k (x1.77)

Multithread

L7500

i7-870
Test#1 (Integers)
3.07k
4.46k (x1.45)
Test#2 (FP)
3.11k
13.95k (x4.48)
Test#3 (Generic, ZIP)
2.96k
7.54k (x2.55)
Test#1 (Memory)
1.4k
1.7k (x1.21)
TOTAL
10.55k
27.65k (x2.62)

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
L7500
i7-870
Test#1 (Integers)
1.83k
7.43k (x4.05)
Test#2 (FP)
1.65k
4.96k (x3)
Test#3 (Generic, ZIP)
1.58k
2.7k (x1.71)
Test#1 (Memory)
1.68k
3.04k (x1.81)
TOTAL
6.74k
18.13k (x2.69)

Multithread

L7500

i7-870
Test#1 (Integers)
3.38k
27.58k (x8.15)
Test#2 (FP)
3.03k
21.84k (x7.2)
Test#3 (Generic, ZIP)
2.89k
13.55k (x4.69)
Test#1 (Memory)
1.34k
4.16k (x3.1)
TOTAL
10.65k
67.13k (x6.3)

Performance/W
L7500
i7-870
Test#1 (Integers)
199 points/W
290 points/W
Test#2 (FP)
178 points/W
230 points/W
Test#3 (Generic, ZIP)
170 points/W
143 points/W
Test#1 (Memory)
79 points/W
44 points/W
TOTAL
626 points/W
707 points/W

Performance/GHz
L7500
i7-870
Test#1 (Integers)
1146 points/GHz
2063 points/GHz
Test#2 (FP)
1033 points/GHz
1379 points/GHz
Test#3 (Generic, ZIP)
985 points/GHz
750 points/GHz
Test#1 (Memory)
1051 points/GHz
845 points/GHz
TOTAL
4215 points/GHz
5037 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