Xeon E5645 vs Pentium G850
Description
The E5645 is based on Westmere architecture while the G850 is based on Sandy Bridge.
Using the multithread performance as a reference, the E5645 gets a score of 77 k points while the G850 gets 40.5 k points.
Summarizing, the E5645 is 1.9 times faster than the G850 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the E5645 gets a score of 77 k points while the G850 gets 40.5 k points.
Summarizing, the E5645 is 1.9 times faster than the G850 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
206c2
206a7
Core
Westmere-EP
Sandy Bridge
Base frecuency
2.4 GHz
2.9 GHz
Boost frecuency
2.8 GHz
2.9 GHz
Socket
LGA 1366
LGA 1155
Cores/Threads
6 /6
2/2
TDP
80 W
65 W
Cache L1 (d+i)
64 kB
32+32 kB
Cache L2
256 kB
256 kB
Cache L3
12288 kB
3072 kB
Date
March 2010
May 2012
Mean monothread perf.
15.64k points
21.85k points
Mean multithread perf.
76.96k points
40.5k 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
E5645
G850
Test#1 (Integers)
6.47k
8.77k (x1.36)
Test#2 (FP)
4.4k
7.08k (x1.61)
Test#3 (Generic, ZIP)
2.43k
3.72k (x1.53)
Test#1 (Memory)
2.33k
2.28k (x0.98)
TOTAL
15.64k
21.85k (x1.4)
Multithread
E5645
G850
Test#1 (Integers)
34.43k
17.5k (x0.51)
Test#2 (FP)
24.23k
13.48k (x0.56)
Test#3 (Generic, ZIP)
14.48k
7.32k (x0.51)
Test#1 (Memory)
3.81k
2.19k (x0.58)
TOTAL
76.96k
40.5k (x0.53)
Performance/W
E5645
G850
Test#1 (Integers)
430 points/W
269 points/W
Test#2 (FP)
303 points/W
207 points/W
Test#3 (Generic, ZIP)
181 points/W
113 points/W
Test#1 (Memory)
48 points/W
34 points/W
TOTAL
962 points/W
623 points/W
Performance/GHz
E5645
G850
Test#1 (Integers)
2311 points/GHz
3025 points/GHz
Test#2 (FP)
1573 points/GHz
2440 points/GHz
Test#3 (Generic, ZIP)
867 points/GHz
1283 points/GHz
Test#1 (Memory)
833 points/GHz
787 points/GHz
TOTAL
5584 points/GHz
7534 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4