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Core i7-930 vs Xeon E5645


Description
Both models i7-930 and E5645 are based on Westmere architecture.



Using the multithread performance as a reference, the i7-930 gets a score of 69.4 k points while the E5645 gets 77 k points.

Summarizing, the E5645 is 1.1 times faster than the i7-930 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106a5
206c2
Core
Bloomfield
Westmere-EP
Architecture
Base frecuency
2.8 GHz
2.4 GHz
Boost frecuency
3.067 GHz
2.8 GHz
Socket
LGA 1366
LGA 1366
Cores/Threads
4/8
6 /6
TDP
130 W
80 W
Cache L1 (d+i)
32+32 kB
64 kB
Cache L2
256 kB
256 kB
Cache L3
8192 kB
12288 kB
Date
February 2010
March 2010

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
E5645
Test#1 (Integers)
1941
1779 (-8.36%)
Test#2 (FP)
4384
3910 (-10.80%)
Test#3 (Generic, ZIP)
2638
2524 (-4.33%)
Test#1 (Memory)
2408
2422 (0.59%)
TOTAL
11371
10636 (-6.47%)

Multithread

i7-930

E5645
Test#1 (Integers)
7305
9666 (32.33%)
Test#2 (FP)
19361
22915 (18.36%)
Test#3 (Generic, ZIP)
13429
14311 (6.57%)
Test#1 (Memory)
2011
3808 (89.38%)
TOTAL
42106
50701 (20.41%)

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
E5645
Test#1 (Integers)
7276
6472 (-11.05%)
Test#2 (FP)
4819
4404 (-8.61%)
Test#3 (Generic, ZIP)
2862
2428 (-15.19%)
Test#1 (Memory)
2623
2333 (-11.07%)
TOTAL
17580
15636 (-11.06%)

Multithread

i7-930

E5645
Test#1 (Integers)
28092
34434 (22.57%)
Test#2 (FP)
21624
24230 (12.05%)
Test#3 (Generic, ZIP)
14826
14479 (-2.34%)
Test#1 (Memory)
4851
3812 (-21.41%)
TOTAL
69393
76955 (10.90%)

Performance/W
i7-930
E5645
Test#1 (Integers)
216 points/W
430 points/W
Test#2 (FP)
166 points/W
303 points/W
Test#3 (Generic, ZIP)
114 points/W
181 points/W
Test#1 (Memory)
37 points/W
48 points/W
TOTAL
534 points/W
962 points/W

Performance/GHz
i7-930
E5645
Test#1 (Integers)
2372 points/GHz
2311 points/GHz
Test#2 (FP)
1571 points/GHz
1573 points/GHz
Test#3 (Generic, ZIP)
933 points/GHz
867 points/GHz
Test#1 (Memory)
855 points/GHz
833 points/GHz
TOTAL
5732 points/GHz
5584 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