Help about system power draw

[genca]

Hi guys, which system power draw should i expect from this components:core 2 quad q9400, 3gb ddr3, one 7.2 hdd, ssd.All components are idling-im not using it .My gpu is mining and gpu only power draw is 80w.Do i go over 130w?Psu is seasonic M12II-620 EVO

 

[Solandri]

The power consumption of the old Core and Core 2 lines was a tremendous improvement over the Pentium 4, but they still burned a lot of power on idle compared to modern systems. The Q9400 is rated at a 95 Watt TDP, and idle power consumption is just 45 Watts less than full power.

http://www.legitreviews.com/intel-core-2-quad-q9400-processor-review_939/12

So you'd expect the CPU alone to consume about 50 Watts at idle. Which combined with your 80 Watt GPU puts you at 130 Watts, before you've added the motherboard, memory, drives. So yes you're likely over your power budget.

Intel didn't take lowering idle power consumption seriously until Sandy Bridge (i3, i5, i7-2xxx). A Sandy Bridge desktop system using integrated graphics will idle around 35-40 Watts (for the entire system). As you say this is for mining, it will likely be on 24/7. So if you pay the U.S. average of 11.5 cents/kWh, every 1 Watt power reduction will translate into $1 saved over the course of a year. So a Sandy Bridge or newer system will save you $100+ in electricity over 2-3 years compared to a Core 2 system. Meaning money you spend on a newer system today will be money you save via lower electricity costs in the future.

 

[Solandri]

The power consumption of the old Core and Core 2 lines was a tremendous improvement over the Pentium 4, but they still burned a lot of power on idle compared to modern systems. The Q9400 is rated at a 95 Watt TDP, and idle power consumption is just 45 Watts less than full power.

http://www.legitreviews.com/intel-core-2-quad-q9400-processor-review_939/12

So you'd expect the CPU alone to consume about 50 Watts at idle. Which combined with your 80 Watt GPU puts you at 130 Watts, before you've added the motherboard, memory, drives. So yes you're likely over your power budget.

Intel didn't take lowering idle power consumption seriously until Sandy Bridge (i3, i5, i7-2xxx). A Sandy Bridge desktop system using integrated graphics will idle around 35-40 Watts (for the entire system). As you say this is for mining, it will likely be on 24/7. So if you pay the U.S. average of 11.5 cents/kWh, every 1 Watt power reduction will translate into $1 saved over the course of a year. So a Sandy Bridge or newer system will save you $100+ in electricity over 2-3 years compared to a Core 2 system. Meaning money you spend on a newer system today will be money you save via lower electricity costs in the future.

 

[genca]

Price of one kwh here is about 0.04dollars(from 0.03 to 0.05 it depends on zone,but lets say average 0.04).So i probably go up to 160w from wall or less?

 

[ko888]

The idle power draw of the Core2 Quad Q9400 (Yorkfield) processor, itself, is only 4.7 Watts.
1GB DDR3 DIMM 3.06 Watts
2GB DDR3 DIMM 3.56 Watts
SATA 7200 RPM HDD 11.1 Watts while reading/writing
Motherboard 40 Watts or may be less depending upon what features are in use at the time
GPU 80 Watts

I would say the DC power consumption will be in the 142 Watt range. Using a PSU conversion efficiency of around 83.5% for your Seasonic M12II-620 EVO you should be seeing around 170 Watts at the PSU's AC power plug.

 

[genca]

Thank you veryyy much.Now i know how much money i need to give my parents