Gigabyte Z77-HD4 Review
by Ian Cutress on May 19, 2013 10:00 AM EST- Posted in
- Motherboards
- Gigabyte
- Z77
Many thanks to...
We must thank the following companies for kindly providing hardware for our test bed:
Thank you to OCZ for providing us with 1250W Gold Power Supplies.
Thank you to G.Skill for providing us with the memory kits.
Thank you to ASUS for providing us with the AMD GPUs and some IO Testing kit.
Thank you to ECS for providing us with the NVIDIA GPUs.
Thank you to Corsair for providing us with the Corsair H80i CLC.
Thank you to Rosewill for providing us with the 500W Platinum Power Supply for mITX testing, BlackHawk Ultra, and 1600W Hercules PSU for extreme dual CPU + quad GPU testing, and RK-9100 keyboards.
Test Setup
Power Consumption
Power consumption was tested on the system as a whole with a wall meter connected to the OCZ 1250W power supply, while in a dual 7970 GPU configuration. This power supply is Gold rated, and as I am in the UK on a 230-240 V supply, leads to ~75% efficiency > 50W, and 90%+ efficiency at 250W, which is suitable for both idle and multi-GPU loading. This method of power reading allows us to compare the power management of the UEFI and the board to supply components with power under load, and includes typical PSU losses due to efficiency. These are the real world values that consumers may expect from a typical system (minus the monitor) using this motherboard.
While this method for power measurement may not be ideal, and you feel these numbers are not representative due to the high wattage power supply being used (we use the same PSU to remain consistent over a series of reviews, and the fact that some boards on our test bed get tested with three or four high powered GPUs), the important point to take away is the relationship between the numbers. These boards are all under the same conditions, and thus the differences between them should be easy to spot.
For a low cost motherboard with few features, we would expect it to have a lower power consumption than that of a mid-range Z77 motherboard. The truth of the matter is that as a board is more expensive, especially at the high end, component efficiency is a factor in the overall board cost. As a result, the Z77-HD4 does well at idle and CPU load, but breaks over 500 W in Metro2033.
POST Time
Different motherboards have different POST sequences before an operating system is initialized. A lot of this is dependent on the board itself, and POST boot time is determined by the controllers on board (and the sequence of how those extras are organized). As part of our testing, we are now going to look at the POST Boot Time - this is the time from pressing the ON button on the computer to when Windows starts loading. (We discount Windows loading as it is highly variable given Windows specific features.) These results are subject to human error, so please allow +/- 1 second in these results.
With fewer controllers, a cheaper motherboard would be expected to POST quicker than a more indepth motherboard. But it would seem that the cheaper motherboards also have less time spent optimising the POST sequence. As a result, the default boot time with two GPUs is north of 18 seconds. The fact that the second GPU had to be in an x4 slot via the PCH may also be a factor in this.
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DanNeely - Monday, May 20, 2013 - link
Sata 6GB and USB3 both take significantly more die space on the chipset to implement; since most users only have at most a few devices that need the extra bandwidth most of ports offered on the chipset are still the older models. Haswell will probably be all Sata6GB on the chipset, although i wouldn't be surprised if some budget mobos add sata3gb ports via external controllers.The USB2/3 mix will probably last for a few more years on the desktop; this is both because of the much larger total number of ports involved, and because the internal headers aren't directly compatible (afaik you can buy adapters) and there're lots of cases which only have USB2 on the front panel; and lots of people with USB2 based cardreaders in a drive bay. I suspect one or two mobo headers for those will be with us for a long time; and wouldn't be surprised if a few linger as onboard/embedded device connects too like the pair of USB1 ports AMD chipsets still have (notionally for laptop keyboard/touchpad connects; but in both the desktop and mobile chipsets). I doubt the next generation of laptops will have any external USB2 ports; but might continue to use them internally.
maximumGPU - Monday, May 20, 2013 - link
haha those spam comments actually made me laugh.cjs150 - Monday, May 20, 2013 - link
This is a weird board.Full ATX but with 2x PCI slots. What do people use 1 for now, nevermind 2.
SATA sockets upright and in just the place that will ensure you lose the use of one of the SATA 6G sockets as soon as you put in a graphics card.
Spend a bit more a get a decent M-atx board with better layout
Wall Street - Monday, May 20, 2013 - link
Since the second x16 slot is powered from the x4 from the southbridge, I think they did this because they ran out of PCIe lanes. Also, some people use PCI for legacy devices. For example, I have a PCI TV tuner that I still use because a 4 year old tuner is just as good at HD as a new one.kasakka - Monday, May 20, 2013 - link
FireWire cards are actually still a good choice for using PCI slots, because most PCI-E FW cards cost 2x more and are essentially a PCI-to-PCI-E bridge chip + the PCI card's components. The few natively PCI-E FW cards are 3x more expensive than their PCI counterparts.Yes, FW still matters since most of the better audio interfaces use it so a big thing for studios or home recording, now that most motherboards don't come with a built-in FW chip.
It's the x4 full size PCI-E slots that make no sense to me.
DanNeely - Monday, May 20, 2013 - link
raid cards, or a second gpu for extra (non gaming) monitor outputs all need more than a single 1x lane; but 4 is plenty for anything they'd be asked to do. Some 4 port USB3 adapter cards on newegg are more than just 1x (though not explicitly marked I think they're 2x); presumably if you tried loading all 4 ports at once on the 1x cards you'd be bottlenecking on the PCIe bus.Wall Street - Monday, May 20, 2013 - link
You can install a PCIe x16 card in an x16 physical slot that is electrically PCIe x4. You also can install an PCIe x4 card in a x16 physical slot that is electrically x4. You cannot install a PCIe x16 card in a physical x4 slot. This is why they put an x16 physical slot for an x4 interface. An x16 physical slot is always at least as good.jabber - Monday, May 20, 2013 - link
X4 slots are hard to come by (I havent had a board with one fitted in years) so it may be they don't really make them anymore and just use a standard 16x slot instead.DanNeely - Monday, May 20, 2013 - link
I think the second PCI slot is as much about the limited number of PCIe lanes available as anything else. IIRC 7 series chipsets don't have native PCI support instead requiring a bridge chip, and only 8 PCIe lanes on the SB. That's 4 for the x4 slot, 2 for the 2x slots, 1 for the bridge, and 1 for the realtek nic (if I'm reading the specsheet right, the audio connects to the chipsets audio out and not over PCIe). That uses up all 8 available lanes; leaving the choice of only having 5 expansion slots filled, or spending more for a PCIe mux to add more available lanes. The latter is what I think many higher end boards do, but is cost-prohibitive in the value segment where every dollar counts.Cerb - Tuesday, May 21, 2013 - link
Awhile ago, I came across some audio books on cassette tape, and wanted to transfer them. My best input choice, by far, was an existing PCI sound card, with an external ADC. There you have it. For someone else, it may be an old but high quality plotter or scanner using SCSI, or a special serial card, or firewire card, or some other little thing.Like serial and parallel ports, PCI will be with us for awhile yet, though there is no good reason to need more than 1 of them, except that they would have had an unfilled slot, otherwise.
That 2nd slot is there, almost certainly, to fill space, due to using up the PCIe lanes available. Even MicroATX boards do this, giving 2 PCI slots, but an extra PCIe with more lanes, instead of several 1x PCIe slots.