| | | | | | |

Core i7-870 vs i7-860


Description
Both models i7-870 and i7-860 are based on Nehalem architecture.



Using the multithread performance as a reference, the i7-870 gets a score of 67.1 k points while the i7-860 gets 75.4 k points.

Summarizing, the i7-860 is 1.1 times faster than the i7-870 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106e5
106e5
Core
Lynnfield
Lynnfield
Architecture
Base frecuency
2.933 GHz
2.8 GHz
Boost frecuency
3.6 GHz
3.467 GHz
Socket
LGA 1156
LGA 1156
Cores/Threads
4/8
4/8
TDP
95 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
8192 kB
Date
September 2009
September 2009
Mean monothread perf.
18.13k points
19.19k points
Mean multithread perf.
67.13k points
75.43k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-870
i7-860
Test#1 (Integers)
1.98k
2.15k (x1.08)
Test#2 (FP)
4.36k
4.87k (x1.12)
Test#3 (Generic, ZIP)
2.24k
2.82k (x1.26)
Test#1 (Memory)
2.72k
3.13k (x1.15)
TOTAL
11.3k
12.97k (x1.15)

Multithread

i7-870

i7-860
Test#1 (Integers)
4.46k
8.24k (x1.85)
Test#2 (FP)
13.95k
21.63k (x1.55)
Test#3 (Generic, ZIP)
7.54k
14.65k (x1.94)
Test#1 (Memory)
1.7k
5.02k (x2.96)
TOTAL
27.65k
49.54k (x1.79)

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
i7-860
Test#1 (Integers)
7.43k
7.87k (x1.06)
Test#2 (FP)
4.96k
5.25k (x1.06)
Test#3 (Generic, ZIP)
2.7k
2.94k (x1.09)
Test#1 (Memory)
3.04k
3.13k (x1.03)
TOTAL
18.13k
19.19k (x1.06)

Multithread

i7-870

i7-860
Test#1 (Integers)
27.58k
31.5k (x1.14)
Test#2 (FP)
21.84k
23.47k (x1.07)
Test#3 (Generic, ZIP)
13.55k
15.47k (x1.14)
Test#1 (Memory)
4.16k
4.98k (x1.19)
TOTAL
67.13k
75.43k (x1.12)

Performance/W
i7-870
i7-860
Test#1 (Integers)
290 points/W
332 points/W
Test#2 (FP)
230 points/W
247 points/W
Test#3 (Generic, ZIP)
143 points/W
163 points/W
Test#1 (Memory)
44 points/W
52 points/W
TOTAL
707 points/W
794 points/W

Performance/GHz
i7-870
i7-860
Test#1 (Integers)
2063 points/GHz
2271 points/GHz
Test#2 (FP)
1379 points/GHz
1514 points/GHz
Test#3 (Generic, ZIP)
750 points/GHz
847 points/GHz
Test#1 (Memory)
845 points/GHz
902 points/GHz
TOTAL
5037 points/GHz
5534 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