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Core i7-920 vs Pentium T3400


Description
The i7-920 is based on Nehalem Westmere architecture while the T3400 is based on Core.

Using the multithread performance as a reference, the i7-920 gets a score of 47.2 k points while the T3400 gets 14.9 k points.

Summarizing, the i7-920 is 3.2 times faster than the T3400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106a5
6fd
Core
Bloomfield
Merom-2M
Architecture
Nehalem Westmere
Base frecuency
2.667 GHz
2.167 GHz
Boost frecuency
2.993 GHz
2.167 GHz
Socket
LGA 1366
Socket P
Cores/Threads
4/8
2/2
TDP
130 W
35 W
Cache L1 (d+i)
32+32 kB
2x32+2x32 kB
Cache L2
256 kB
1024 kB
Cache L3
8192 kB
kB
Date
November 2008
October 2008
Mean monothread perf.
16.33k points
8.05k points
Mean multithread perf.
47.2k points
14.91k 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
i7-920
T3400
Test#1 (Integers)
1.97k
1.86k (x0.95)
Test#2 (FP)
4.43k
1.9k (x0.43)
Test#3 (Generic, ZIP)
2.75k
1.42k (x0.51)
Test#1 (Memory)
2.53k
0.84k (x0.33)
TOTAL
11.68k
6.01k (x0.51)

Multithread

i7-920

T3400
Test#1 (Integers)
7.71k
4.04k (x0.52)
Test#2 (FP)
18.81k
4.17k (x0.22)
Test#3 (Generic, ZIP)
13.76k
3.55k (x0.26)
Test#1 (Memory)
5.07k
1.2k (x0.24)
TOTAL
45.34k
12.96k (x0.29)

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
T3400
Test#1 (Integers)
6.12k
2.49k (x0.41)
Test#2 (FP)
4.76k
2.25k (x0.47)
Test#3 (Generic, ZIP)
2.78k
2.17k (x0.78)
Test#1 (Memory)
2.67k
1.14k (x0.43)
TOTAL
16.33k
8.05k (x0.49)

Multithread

i7-920

T3400
Test#1 (Integers)
19.26k
4.98k (x0.26)
Test#2 (FP)
14.96k
4.43k (x0.3)
Test#3 (Generic, ZIP)
8.05k
4.27k (x0.53)
Test#1 (Memory)
4.92k
1.23k (x0.25)
TOTAL
47.2k
14.91k (x0.32)

Performance/W
i7-920
T3400
Test#1 (Integers)
148 points/W
142 points/W
Test#2 (FP)
115 points/W
127 points/W
Test#3 (Generic, ZIP)
62 points/W
122 points/W
Test#1 (Memory)
38 points/W
35 points/W
TOTAL
363 points/W
426 points/W

Performance/GHz
i7-920
T3400
Test#1 (Integers)
2044 points/GHz
1150 points/GHz
Test#2 (FP)
1591 points/GHz
1037 points/GHz
Test#3 (Generic, ZIP)
930 points/GHz
1002 points/GHz
Test#1 (Memory)
891 points/GHz
526 points/GHz
TOTAL
5457 points/GHz
3714 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