Pentium G850 vs G645
Description
Both models G850 and G645 are based on Sandy Bridge architecture.
"Sandy Bridge codename was originally ""Gesher"". The development began in 2005 and four years later, the first Sandy Bridge CPU was presented. The most prominent features are Intel Turbo Boost 2.0, AES encryption and SHA-1 hashing acceleration, Advanced Vector Extensions (AVX) 256-bit instruction set and the ability to have up to 8 physical cores or 16 logical cores through Hyper-Threading."
Using the multithread performance as a reference, the G850 gets a score of 40.5 k points while the G645 gets 35.4 k points.
Summarizing, the G850 is 1.1 times faster than the G645 . To get a proper comparison between both models, take a look to the data shown below.
"Sandy Bridge codename was originally ""Gesher"". The development began in 2005 and four years later, the first Sandy Bridge CPU was presented. The most prominent features are Intel Turbo Boost 2.0, AES encryption and SHA-1 hashing acceleration, Advanced Vector Extensions (AVX) 256-bit instruction set and the ability to have up to 8 physical cores or 16 logical cores through Hyper-Threading."
Using the multithread performance as a reference, the G850 gets a score of 40.5 k points while the G645 gets 35.4 k points.
Summarizing, the G850 is 1.1 times faster than the G645 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
206a7
206a7
Core
Sandy Bridge
Sandy Bridge
Base frecuency
2.9 GHz
2.9 GHz
Socket
LGA 1155
LGA 1155
Cores/Threads
2/2
2/2
TDP
65 W
65 W
Cache L1 (d+i)
32+32 kB
2x32+2x32 kB
Cache L2
256 kB
2x256 kB
Cache L3
3072 kB
3072 kB
Date
May 2012
September 2012
Mean monothread perf.
21.85k points
22.24k points
Mean multithread perf.
40.5k points
35.38k 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
G850
G645
Test#1 (Integers)
8.77k
8.66k (x0.99)
Test#2 (FP)
7.08k
6.9k (x0.98)
Test#3 (Generic, ZIP)
3.72k
3.48k (x0.94)
Test#1 (Memory)
2.28k
3.2k (x1.4)
TOTAL
21.85k
22.24k (x1.02)
Multithread
G850
G645
Test#1 (Integers)
17.5k
14.06k (x0.8)
Test#2 (FP)
13.48k
11.82k (x0.88)
Test#3 (Generic, ZIP)
7.32k
5.83k (x0.8)
Test#1 (Memory)
2.19k
3.69k (x1.68)
TOTAL
40.5k
35.38k (x0.87)
Performance/W
G850
G645
Test#1 (Integers)
269 points/W
216 points/W
Test#2 (FP)
207 points/W
182 points/W
Test#3 (Generic, ZIP)
113 points/W
90 points/W
Test#1 (Memory)
34 points/W
57 points/W
TOTAL
623 points/W
544 points/W
Performance/GHz
G850
G645
Test#1 (Integers)
3025 points/GHz
2987 points/GHz
Test#2 (FP)
2440 points/GHz
2380 points/GHz
Test#3 (Generic, ZIP)
1283 points/GHz
1199 points/GHz
Test#1 (Memory)
787 points/GHz
1103 points/GHz
TOTAL
7534 points/GHz
7669 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