Let’s start off with the basic compares:

Application Performance - WinRAR 3.90 x64 - i5 661 CPU @ Stock

Gaming Performance - Far Cry 2 - i5 661 CPU @ Stock

Application Performance - AutoCAD 2010 x64 - i5 661 CPU @ Stock

The H55H-I performs admirably in  our benchmark suite, placing mid to top tier in every benchmark we threw at it.

Power Consumption

Our power consumption testing utilizes the same batch of components under similar circumstances in a bid to monitor variances between idle and CPU load conditions. We install the vendor supplied power saving utilities on each board (when available) and enable power saving modes that don't involve any kind of underclocking or CPU core frequency modulation in order to run an apples to apples comparison.

ATX PSU switching losses are absent from our figures because we monitor power consumption directly at the DC rails of the PSU. These figures measure only the CPU, motherboard and memory DC power draw and exclude any other peripherals, such as cooling fans and hard drives etc.  AC power consumption at the wall will be anywhere from 15~40% higher than these figures depending upon the efficiency of your power supply.

Motherboard Power Consumption - Idle Power - i5 661 CPU - IGP

Motherboard Power Consumption - HD Video Playback - i5 661 CPU

The DC power consumption figures are almost identical to Intel's DH57JG in every day usage.



The inclusion of over-voltage options for CPU VCore, VTT and VDIMM open the door to a reasonable level of overclocking with Clarkdale processors:

4GHz is attainable on the H55H-I, surpassing the Intel DH57JG.

We added a 0.1V voltage boost to CPU VCore (ignore the 2.20V shown in the CPU-Z screenshot, it's around 1.23V), VTT and VDIMM for the above screenshot and proceeded to pass two hours of Linpack without a glitch. The BIOS does allow you to push higher if you want to, although we think it’s probably safe to stick at a 4GHz limit given the perceived abilities of ECS’ VRM (3 Phase for VCC using 30 amp FETs, giving a  theoretical 90 amp maximum under a best case scenario). Bear in mind that if running with the IGP active, you’ll be limited somewhere around 165BCLK anyway, because there is no way to change the IGP clock ratio in BIOS or increase voltage to the graphics core.

For those of you wondering about Lynnfield overclocking, do yourself a favor and don't take any of the four core processors above stock on this board - there's not enough power on tap to sustain the load.

ECS H55H-I – Mini-ITX at a Sensible Price. Board Features


View All Comments

  • Rajinder Gill - Thursday, May 06, 2010 - link

    Not a typo - it's 30 amps per FET at CPU VID. Reply
  • MadMan007 - Thursday, May 06, 2010 - link

    Amps alone aren't a measure of power. A=current, W=power. Reply
  • ajbumass - Thursday, May 06, 2010 - link

    "Much of what the ECS H55H-I can and cannot do bares a startling resemblance to Intel’s DH57JG."

    This should be "bears".

    "The only major difference is that ECS are keeping a loose grip on the voltage reigns for Clarkdale processors at present, so you get more room to play with overclocking."

    I think you mean "reins".
  • Rajinder Gill - Thursday, May 06, 2010 - link

    Sorry, fixed! Reply
  • nubie - Thursday, May 06, 2010 - link

    I have been waiting a long time.

    Finally and at last.

    Only problem?

    I have yet to see a decent case and PSU for one of these :(.

    Well, except maybe a Shuttle K45 case and PSU. They have a slimline optical bay at the top, but no port for it in the front cover :S
  • jaydee - Thursday, May 06, 2010 - link

    Silverstone SG05/06, w/300W PSU? Reply
  • nubie - Thursday, May 06, 2010 - link

    Many thanks, I don't know how I missed that. I enjoy SPCR. Reply
  • Swivelguy2 - Thursday, May 06, 2010 - link


    Did you test if this board can run 2 digital displays (HDMI + DVI) from the IGP? There are reports that some H55 boards can only run 2 displays using one of them as analog, so I'm wondering if this one is similarly crippled.

    Thanks for the review!
  • Rajinder Gill - Thursday, May 06, 2010 - link


    Just checked for you quickly. No problems here. I'm using DVI out and HDMI out simultaneously and both displays are active.

  • Swivelguy2 - Thursday, May 06, 2010 - link

    Great, thanks! Reply

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