- Dec 5, 2014
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Hi,
Recently I purchased a new laptop,
Acer Aspire V Nitro VN7-572G-75AJ
Intel Core i7-6500U
Intel HD Graphics 520 and Nvidia GeFOrce 945M
8GB DDR4 1.2v RAM
Samsung 850 Pro SSD
My old computer:
Acer Aspire E15 E5-571PG-524H
Intel Core i5-4210U
Intel HD Graphics 4400 and Nvidia GeForce 840M
4GB DDR3 L 1.35v RAM
Samsung 850 Pro
With the new Skylake chip, power efficiency is amazing when doing work, e.g. browsing and gaming, but idle power consumption is another matter. The i5-6200U uses 1.4W on idle, whist the i5-4210U used only 0.6W. According to HWMonitorx64, here are the specs
I7-6500U
Package: 1.4xW (Fluctuates slightly, but always 1.6W)
IA Cores: 0.0xW (Normally below 0.05W)
GT: 0.01W
Uncore: 1.3-1.4W
DRAM 0.48-0.50W
I5-4210U
Package: 0.6xW
IA Cores: 0.0xW (Normally below 0.15W)
GT: 0.01W
Uncore: 0.50-0.55W
DRAM 0.48-0.50W
IT may not seem like much, but 1 Watt is a lot in terms of laptop idle power consumption. The power plan on both the computers are exactly the same, and both drivers/BIOS are updated.
The only differences may be:
1 MB more cache for the i7, but surely that 1 more megabyte can’t account for that ridiculous difference. Besides, DRAM is essentially cache, and both are just about the same…
DDR4 RAM for the new computer. I don’t know much about memory controllers, but that may be it.
The RAM power consumption is now INCLUDED in the Uncore power consumption in these Skylake chips. But no, not with my other Skylake laptop:
HOWEVER, there is one last comparison for this. My faulty last computer,
Acer Aspire F15 F5-572G-595M
Intel Core i5-6200U
Intel HD Graphics 520 and Nvidia GeForce 920M
8GB DDR3 L 1.35v RAM
Samsung 850 Pro
Power consumption was just about the same as the i5-4210U
Any ideas?
PS: Yes, I do love the Acer Aspire line of computers. They are budget-friendly
All measurements from CPUID HWMonitorx64 correspond to OpenHardwareMonitor 0.8.1 Beta.
Package power consumption corresponds with ThrottleStop, as well as HWInfox64
The i7-6500U is undervolted by -90mV on the Cores and -90mV on the Cache (DRAM) as well as -20mV on the iGPU
Recently I purchased a new laptop,
Acer Aspire V Nitro VN7-572G-75AJ
Intel Core i7-6500U
Intel HD Graphics 520 and Nvidia GeFOrce 945M
8GB DDR4 1.2v RAM
Samsung 850 Pro SSD
My old computer:
Acer Aspire E15 E5-571PG-524H
Intel Core i5-4210U
Intel HD Graphics 4400 and Nvidia GeForce 840M
4GB DDR3 L 1.35v RAM
Samsung 850 Pro
With the new Skylake chip, power efficiency is amazing when doing work, e.g. browsing and gaming, but idle power consumption is another matter. The i5-6200U uses 1.4W on idle, whist the i5-4210U used only 0.6W. According to HWMonitorx64, here are the specs
I7-6500U
Package: 1.4xW (Fluctuates slightly, but always 1.6W)
IA Cores: 0.0xW (Normally below 0.05W)
GT: 0.01W
Uncore: 1.3-1.4W
DRAM 0.48-0.50W
I5-4210U
Package: 0.6xW
IA Cores: 0.0xW (Normally below 0.15W)
GT: 0.01W
Uncore: 0.50-0.55W
DRAM 0.48-0.50W
IT may not seem like much, but 1 Watt is a lot in terms of laptop idle power consumption. The power plan on both the computers are exactly the same, and both drivers/BIOS are updated.
The only differences may be:
1 MB more cache for the i7, but surely that 1 more megabyte can’t account for that ridiculous difference. Besides, DRAM is essentially cache, and both are just about the same…
DDR4 RAM for the new computer. I don’t know much about memory controllers, but that may be it.
The RAM power consumption is now INCLUDED in the Uncore power consumption in these Skylake chips. But no, not with my other Skylake laptop:
HOWEVER, there is one last comparison for this. My faulty last computer,
Acer Aspire F15 F5-572G-595M
Intel Core i5-6200U
Intel HD Graphics 520 and Nvidia GeForce 920M
8GB DDR3 L 1.35v RAM
Samsung 850 Pro
Power consumption was just about the same as the i5-4210U
Any ideas?
PS: Yes, I do love the Acer Aspire line of computers. They are budget-friendly
All measurements from CPUID HWMonitorx64 correspond to OpenHardwareMonitor 0.8.1 Beta.
Package power consumption corresponds with ThrottleStop, as well as HWInfox64
The i7-6500U is undervolted by -90mV on the Cores and -90mV on the Cache (DRAM) as well as -20mV on the iGPU
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