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Core i7-950 vs Xeon X5675


Description
Both models i7-950 and X5675 are based on Westmere architecture.



Using the multithread performance as a reference, the i7-950 gets a score of 76.3 k points while the X5675 gets 124.9 k points.

Summarizing, the X5675 is 1.6 times faster than the i7-950 . 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
3.066 GHz
3.067 GHz
Boost frecuency
3.333 GHz
3.467 GHz
Socket
LGA 1366
LGA 1366
Cores/Threads
4/4
6 /12
TDP
130 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
256 kB
6x256 kB
Cache L3
8192 kB
12288 kB
Date
June 2009
February 2011
Mean monothread perf.
19.46k points
21.04k points
Mean multithread perf.
76.29k points
124.92k 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
i7-950
X5675
Test#1 (Integers)
8.01k
8.77k (x1.09)
Test#2 (FP)
5.38k
5.82k (x1.08)
Test#3 (Generic, ZIP)
3.11k
3.47k (x1.12)
Test#1 (Memory)
2.96k
2.98k (x1.01)
TOTAL
19.46k
21.04k (x1.08)

Multithread

i7-950

X5675
Test#1 (Integers)
31.53k
53.23k (x1.69)
Test#2 (FP)
24.16k
39.35k (x1.63)
Test#3 (Generic, ZIP)
15.84k
27.05k (x1.71)
Test#1 (Memory)
4.75k
5.28k (x1.11)
TOTAL
76.29k
124.92k (x1.64)

Performance/W
i7-950
X5675
Test#1 (Integers)
243 points/W
560 points/W
Test#2 (FP)
186 points/W
414 points/W
Test#3 (Generic, ZIP)
122 points/W
285 points/W
Test#1 (Memory)
37 points/W
56 points/W
TOTAL
587 points/W
1315 points/W

Performance/GHz
i7-950
X5675
Test#1 (Integers)
2403 points/GHz
2529 points/GHz
Test#2 (FP)
1614 points/GHz
1679 points/GHz
Test#3 (Generic, ZIP)
934 points/GHz
1001 points/GHz
Test#1 (Memory)
888 points/GHz
860 points/GHz
TOTAL
5839 points/GHz
6070 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