AMD A10-5800K Power Consumption Confusion.

[Dipankar Karmokar]

It is my first built.

After a lot of resarch on internet finally I have decided to take a AMD A10-5800K. But I am little bit worry about its Thermal Design Power (i.e 100W). Do I really have to worry about it?

Actually I want to know that is it always consume 100W power or when it works in its full speed (i.e 3.8 GHz), it consume 100W power? i.e My system will be open most of the time of a day, may be in standby mode or very light loads on it. So, I don't want a high electricity bill.

CPU experts please help me by giving the right info.
Hopefully waiting for your reply...

 

[splinter007]

The more load, the more watts. If it's idle it will not use as much.
Find your CPU in this image below:




Idle Power

Peak Power

 

[jaguarskx]

As shown above in the graphs, a system with the A10-5000k too much power when idling. It has Cool 'n Quiet to lower the clockspeed which helps reduce power consumption. It is similar to Intel's SpeedStep. The Prime 95 program places a lot of stress on the APU which is why power consumption increases dramatically for the entire system.

 

[jaguarskx]

Here are some more power consumption charts. System power consumption is dependent on the components used which is where there are minor variations between this set of graphs and the above set of graphs.

It would have been nice if there was at least one Core i5 in the benchmark such as the Core i5-3570k. The A10-5800k is definitely outclassed by the i5-3570k, but they share a few similarities like having 4 cores and they both have the best integrated graphic core each company has to offer.

Source: http://www.xbitlabs.com/articles/cpu/display/trinity-vs-ivy-bridge_12.html#sect0

 

[Dipankar Karmokar]

Thanks for the info @splinter007 & jaguarskx

it is really helpfull.

 

[jaguarskx]

Note...

When I stated the i5-3570k outclasses the A10-5800k, that only applies to the CPU core. AMD's Radeon HD 7660D graphic core is more powerful than the Intel HD 4000, but it is still considered rather weak compared to a discrete graphics card.

 

[Dipankar Karmokar]

I don't want to to take a discrete GPU. Because 1st it will not fit in my budget, & secondly it consume much power than a CPU. Am I wright?

Can anyone give an idea about how much energy consumes a discreate GPU?

 

[jaguarskx]

Look at the graphs I posted.

The last graph is when both the CPU core and GPU is stressed which works out to 165w.

The 3rd graph is when only the CPU core is stressed which is 136w.

The difference of 29w is more or less how much power the graphic card would used when it is stressed.

 

[Dipankar Karmokar]

No, I actually want to know how much power a discrete GPU consumes?

 

[jaguarskx]

Generally, the more powerful the card the more power it will draw. Below power consumption charts for many, but not all cards. Click the link for other power consumption charts of those same cards at different loads. Note, power measurements are just for the graphics card, nothing else.

Source: http://www.techpowerup.com/reviews/HIS/HD_7750_IceQ_X/26.html

 

[Dipankar Karmokar]

Hmm... Usefull info.
I got it, thanks.

So, that's mean consumption of 100W power for AMD A10-5800K is normal! Am I wright?

Because already its have Quad core @4.8 GHz which need major part of power + a AMD Radeon HD 7670D iGPU which need also some power.

So, can I say that the AMD A10-5800K is a clear winner over any Intel's processor (when talking about power consumption & price)?

 

[spartansociety]

No thats wrong in the following ways:
1.5800k is at 3.8ghz
2. you cant compare number of cores and frequency when comparing AMD and Intel- its not how it works for several major reasons
3. a 5800k will use more power to calculate cpu intensive tasks than an i3 or i5

Having said that, you will be happy with the 5800k as long as your not doing CPU intensive stuff or gaming. remember 100 watts is a normal lightbulb, so not the biggest deal. If your that worried about power make sure you get a good psu. The good ones are rated, Bronze, Silver, Gold, Platinum, in ascending order. Cheap PSU might use an extra 25-30 percent electricity a plat might use an extra 5 percent or so. Ie 100wats plus 30 =130 watts with the cheap PSU vs 100 watts plus 5 = 105 watts for the plat one. (i would get at least a bronze)