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Old August 23, 2011, 05:44 AM
windwithme windwithme is offline
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Join Date: Jul 2009
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Windows Experience Index - CPU 6.4


Windows Experience Index - CPU 6.7


Windows Experience Index is simple and fast benchmark software. User can understand system performance easily.
G620 and G850 are both 2 Cores CPU, but get good score. I hope this software can revise to be more detail test.
As my experience, i3 3.3GHz is 7.1分, i5 2.8GHz s 7.4, i5 3.3GHz is 7.7 and i5 4.8GHz is 7.7
I think the full score should be 7.9. If the hardware performance is good enough the index over 7 is difficult to make a distinction.

DDR3 Test
G620 DDR3 1064.2 CL5 6-5-18 1T
ADIA64 Memory Read - 13035 MB/s
Sandra Memory Bandwidth - 13849 MB/s
MaXXMEM Memory-Copy - 14196 MB/s


G850 DDR3 1330.4 CL6 7-6-18 1T
ADIA64 Memory Read - 15553 MB/s
Sandra Memory Bandwidth - 17250 MB/s
MaXXMEM Memory-Copy - 16723 MB/s


LGA 1156 CPU, built-in GPU, causes low DDR3 performance.
LGA 1155 Sandy Bridge platform has corrected this issue. The bandwidth is higher 10~20% than previous platform.
BIOS setup is AUTO. G620 is DDR3 1066 and G850 is DDR3 1333, which are the official spec.
Actually, if you use high end chipset, the DDR3 clock can be even higher.

G620 DDR3 1872.2 CL9 9-8-24 1T
ADIA64 Memory Read - 16638 MB/s
Sandra Memory Bandwidth - 21978 MB/s
MaXXMEM Memory-Copy - 16605 MB/s


P67/Z68 OC series chipset, if your DDR3 quality is good enough, you can set as 1866 or 2133.
Due to G series is entry model for higher C/P or office PC, most users won’t consider to use P67/Z68.
I just would like to show entry CPU has higher DDR3 performance, so changing to Z68 here to share G620 high DDR3 bandwidth.

Temperature
G620 Enter to Desktop - 31~32(Air condition 27℃)


G850 Enter to Desktop - 42(Room temperature 33℃)


G620 Full Speed - 49~52(Air condition 27℃)
Intel Burn Test v2.4,Stress Level Maximum


G850 Full Speed - 53~56(Room temperature 33℃)
Intel Burn Test v2.4,Stress Level Maximum


As these 2 CPUs clock are similar, so I make different environment to share the temperature test.
In hot summer, the highest temperature in open case is 56 and G850 in chassis is around 60.
If you change to air conditioning room, G850 full speed is 50~52 which is higher 2~3 than G620.
The temperature is key advantage for 32nm CPU.

Power Consumption
G620 Enter to Desktop - 30W
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