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Pentium G645 vs Xeon W3550


Description
The G645 is based on Sandy Bridge architecture while the W3550 is based on .

Using the multithread performance as a reference, the G645 gets a score of 35.4 k points while the W3550 gets 73.2 k points.

Summarizing, the W3550 is 2.1 times faster than the G645 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206a7
106a5
Core
Sandy Bridge
Bloomfield
Architecture
Sandy Bridge
Base frecuency
2.9 GHz
3.066 GHz
Boost frecuency
2.9 GHz
3.333 GHz
Socket
LGA 1155
LGA 1366
Cores/Threads
2/2
4 /4
TDP
65 W
130 W
Cache L1 (d+i)
2x32+2x32 kB
64 kB
Cache L2
2x256 kB
256 kB
Cache L3
3072 kB
8192 kB
Date
September 2012
August 2009
Mean monothread perf.
22.24k points
20.24k points
Mean multithread perf.
35.38k points
73.21k 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
G645
W3550
Test#1 (Integers)
8.66k
8.34k (x0.96)
Test#2 (FP)
6.9k
5.56k (x0.81)
Test#3 (Generic, ZIP)
3.48k
3.26k (x0.94)
Test#1 (Memory)
3.2k
3.08k (x0.96)
TOTAL
22.24k
20.24k (x0.91)

Multithread

G645

W3550
Test#1 (Integers)
14.06k
32.5k (x2.31)
Test#2 (FP)
11.82k
21.59k (x1.83)
Test#3 (Generic, ZIP)
5.83k
12.85k (x2.21)
Test#1 (Memory)
3.69k
6.27k (x1.7)
TOTAL
35.38k
73.21k (x2.07)

Performance/W
G645
W3550
Test#1 (Integers)
216 points/W
250 points/W
Test#2 (FP)
182 points/W
166 points/W
Test#3 (Generic, ZIP)
90 points/W
99 points/W
Test#1 (Memory)
57 points/W
48 points/W
TOTAL
544 points/W
563 points/W

Performance/GHz
G645
W3550
Test#1 (Integers)
2987 points/GHz
2502 points/GHz
Test#2 (FP)
2380 points/GHz
1669 points/GHz
Test#3 (Generic, ZIP)
1199 points/GHz
978 points/GHz
Test#1 (Memory)
1103 points/GHz
925 points/GHz
TOTAL
7669 points/GHz
6073 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