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Core i7-930 vs Core 2 Duo E8400


Description
The i7-930 is based on Westmere architecture while the E8400 is based on Core.

Using the multithread performance as a reference, the i7-930 gets a score of 69.4 k points while the E8400 gets 26.9 k points.

Summarizing, the i7-930 is 2.6 times faster than the E8400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106a5
1067a
Core
Bloomfield
Wolfdale
Architecture
Base frecuency
2.8 GHz
3 GHz
Boost frecuency
3.067 GHz
3 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
0 kB
Date
February 2010
January 2008

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
i7-930
E8400
Test#1 (Integers)
1941
2440 (25.70%)
Test#2 (FP)
4384
6683 (52.47%)
Test#3 (Generic, ZIP)
2638
2848 (7.94%)
Test#1 (Memory)
2408
4295 (78.35%)
TOTAL
11371
16266 (43.05%)

Multithread

i7-930

E8400
Test#1 (Integers)
7305
4546 (-37.77%)
Test#2 (FP)
19361
12116 (-37.42%)
Test#3 (Generic, ZIP)
13429
4685 (-65.11%)
Test#1 (Memory)
2011
1905 (-5.28%)
TOTAL
42106
23251 (-44.78%)

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
i7-930
E8400
Test#1 (Integers)
7276
3263 (-55.16%)
Test#2 (FP)
4819
7184 (49.08%)
Test#3 (Generic, ZIP)
2862
2841 (-0.73%)
Test#1 (Memory)
2623
3622 (38.08%)
TOTAL
17580
16910 (-3.81%)

Multithread

i7-930

E8400
Test#1 (Integers)
28092
6302 (-77.57%)
Test#2 (FP)
21624
13636 (-36.94%)
Test#3 (Generic, ZIP)
14826
5225 (-64.76%)
Test#1 (Memory)
4851
1720 (-64.54%)
TOTAL
69393
26882 (-61.26%)

Performance/W
i7-930
E8400
Test#1 (Integers)
216 points/W
97 points/W
Test#2 (FP)
166 points/W
210 points/W
Test#3 (Generic, ZIP)
114 points/W
80 points/W
Test#1 (Memory)
37 points/W
26 points/W
TOTAL
534 points/W
414 points/W

Performance/GHz
i7-930
E8400
Test#1 (Integers)
2372 points/GHz
1088 points/GHz
Test#2 (FP)
1571 points/GHz
2395 points/GHz
Test#3 (Generic, ZIP)
933 points/GHz
947 points/GHz
Test#1 (Memory)
855 points/GHz
1207 points/GHz
TOTAL
5732 points/GHz
5637 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. 3.7.8