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Core i7-870 vs Pentium G850


Description
The i7-870 is based on Nehalem architecture while the G850 is based on Sandy Bridge.

Using the multithread performance as a reference, the i7-870 gets a score of 42.5 k points while the G850 gets 40.5 k points.

Summarizing, the i7-870 is 1 times faster than the G850 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106e5
206a7
Core
Lynnfield
Sandy Bridge
Architecture
Base frecuency
2.933 GHz
2.9 GHz
Boost frecuency
3.6 GHz
2.9 GHz
Socket
LGA 1156
LGA 1155
Cores/Threads
4/8
2/2
TDP
95 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
8192 kB
3072 kB
Date
September 2009
May 2012
Mean monothread perf.
15.44k points
21.85k points
Mean multithread perf.
42.53k 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
i7-870
G850
Test#1 (Integers)
5.86k
8.77k (x1.5)
Test#2 (FP)
4.53k
7.08k (x1.56)
Test#3 (Generic, ZIP)
2.36k
3.72k (x1.58)
Test#1 (Memory)
2.69k
2.28k (x0.85)
TOTAL
15.44k
21.85k (x1.42)

Multithread

i7-870

G850
Test#1 (Integers)
17.53k
17.5k (x1)
Test#2 (FP)
13.65k
13.48k (x0.99)
Test#3 (Generic, ZIP)
7.93k
7.32k (x0.92)
Test#1 (Memory)
3.41k
2.19k (x0.64)
TOTAL
42.53k
40.5k (x0.95)

Performance/W
i7-870
G850
Test#1 (Integers)
185 points/W
269 points/W
Test#2 (FP)
144 points/W
207 points/W
Test#3 (Generic, ZIP)
83 points/W
113 points/W
Test#1 (Memory)
36 points/W
34 points/W
TOTAL
448 points/W
623 points/W

Performance/GHz
i7-870
G850
Test#1 (Integers)
1629 points/GHz
3025 points/GHz
Test#2 (FP)
1257 points/GHz
2440 points/GHz
Test#3 (Generic, ZIP)
655 points/GHz
1283 points/GHz
Test#1 (Memory)
748 points/GHz
787 points/GHz
TOTAL
4289 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.


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