Power efficient build

How much are you offsetting each CPU? I might try this soon.

Are you offsetting anything else, ie: cache? If so, what values are you using?
 
On the i7 4770 (above) I can't remember but it's quite a margin, will check bios and post back.

The voltages I undervolt are chipset, QPI, memory and CPU offset.
 
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On the i7 4770 (above) I can't remember but it's quite a margin, will check bios and post back.

The voltages I undervolt are chipset, QPI, memory and CPU offset.

As a follow on question, how are you verifying the TDP drop? Or are you judging based on temperature drops?
 
As a follow on question, how are you verifying the TDP drop? Or are you judging based on temperature drops?

I did a basic calculation comparing new lower voltage compared to 1.2v. Then whatever this percent was I reduced from the TDP Intel states for the chip. It not that accurate but should give a guide to what the CPU uses.

You have given me an idea however, I should get a wattage monitor and see what under-voting makes at the wall.
 
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Parts wise, im settled on these:
CPU: Core i5 4570S
Mobo: MSI H97 Gaming 3
Case: NZXT H440 Red

Still a bit unsure on RAM & HSF choices though...
 
Well that board because of the chipset is limited to 1600Mhz RAM, but faster RAM such as the 2400mhz teamgroup will just run at a slower speed.
 
Well that board because of the chipset is limited to 1600Mhz RAM, but faster RAM such as the 2400mhz teamgroup will just run at a slower speed.
Fair enough, save myself a few bob then and go with the GeIL. :p
Looking at some performance tests online, the difference from the bottom end 1300 and the top 2800+ is less than 5% on average anyway...not really a deal breaker.

Just the HSF to pick now.
 
Raijintek Themis Direct Contact CPU Cooler - £19.99 inc VAT

That's what I have and it keeps my CPU as cool as 25c at idle.

Arctic Cooling MX-4 Thermal Compound (4g) - £8.99 inc VAT

I also use that, despite the mixed reviews. Some say it's not quite as good as AS5, some say it is - to be honest, I can't say as I applied it for the first time on my spanking new 4570.

I'd personally recommend the 4570, just for the perfomance. You're only saving a small fraction in power because of the slower clock speeds of the 4570S. I found myself debating between the 4570 and 4570S and eventually decided that I preferred future proofing myself rather than saving coppers in my annual electricity bill.
 
Im kinda hoping that the AC cooler i already have will work on the new sockets. The "rev2" version of it does...plan is to see if it fits, if it does, great, if not, use the intel stock one and order a new'en! :p

I'll add the ThemisDirect to my list to research later. :)

Any other recommendations?
 
Alphenfohn do nice ones.

You are right about the original AC not fitting so unless some how yours is a rev2 it will not fit.
 
I'd have to look at the mounting plate when its out the existing system to be honest.
But the rest of the accessories i still have...
 
I looked into that....just looks cheap.
The problem I'm seeing is that the cases that are good for noise and airflow have a very uninspired design or lack features. Whereas cases like the h440 get mixed reviews.
Some say its quiet all the time with great cooling for single GPU systems. Some say its only quiet when not using the fan hub, some say its good even with 3x GPUs. There's no clear answer!:mad:
 
Another option would be the Antec P183 v3...but the only thing putting me off that is that i already have a P180 and it seems a bit odd to go to the same thing just newer (and without the faults. :p).
 
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