Four Multi-GPU Z77 Boards from $280-$350 - PLX PEX 8747 featuring Gigabyte, ASRock, ECS and EVGA
by Ian Cutress on August 22, 2012 9:15 AM ESTMany thanks to...
We must thank the following companies for kindly donating hardware for our test bed:
OCZ for donating the Power Supply and USB testing SSD
Micron for donating our SATA testing SSD
G.Skill for donating our memory kits
ASUS for donating AMD GPUs and some IO Testing kit
ECS for donating NVIDIA GPUs
Test Setup
| Processor |
Intel Core i7-3770K ES 4 Cores, 8 Threads, 3.5 GHz (3.9 GHz Turbo) |
| Motherboards |
ASRock Z77 Extreme4 ASRock Z77 Extreme6 ASRock Z77 Extreme9 ASRock Fatal1ty Z77 Professional ASUS P8Z77-V Pro ASUS P8Z77-V Deluxe ASUS P8Z77-V Premium Biostar TZ77XE4 ECS Z77H2-AX EVGA Z77 FTW Gigabyte GA-Z77X-UD3H Gigabyte GA-Z77X-UD5H Gigabyte GA-Z77MX-D3H Gigabyte G1.Sniper 3 MSI Z77A-GD65 |
| Memory | G.Skill F3-19200CL9Q-16GBZMD |
| Power Supply | OCZ 1250W Gold ZX Series |
| Cooling | Intel All-in-One Liquid Cooler |
| Hard Drive | Micron RealSSD C300 256GB |
| Optical Drive | LG GH22NS50 |
| Case | Open Test Bed - CoolerMaster Lab V1.0 |
| Operating System | Windows 7 64-bit |
| SATA Testing | Micron RealSSD C300 256GB |
| Thunderbolt Testing | LaCie Little Big 240GB |
| USB 2/3 Testing | OCZ Vertex 3 240GB with SATA->USB Adaptor |
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.
As a general rule, we see that the PLX 8747 motherboards consumer more power in most scenarios. The only exception to this is the EVGA Z77 FTW under Metro2033, which comes in at 480 W compared to the ASRock Z77 Extreme9 at 524 W.
Facebook
Twitter
RSS
24 Comments
View All Comments
ultimatex - Wednesday, August 22, 2012 - link
I got this MOBO from Newegg the first day they had it available , I couldn't believe the price since it offered 8x8x8x8x , Picked it up the first day and havent looked back. Doesnt look as cool as the Asrock extreme9 but it still looks good. Awesome Job Gygabyte , Anandtech should have given them a Gold not bronze though since the fan issue is a minor issue.Arbie - Wednesday, August 22, 2012 - link
For gaming, at least, how many people are really going to build a 2xGPU system? Let alone 3x or 4x. The are so few PC games that can use anything more than one strong card AND are worth playing for more than 10 minutes. I actually don't know of any such games, but tastes differ. And some folks will have multi-monitor setups, and possibly need two cards. But overall I'd think the target audience for these mobos is extremely small.Maybe for scientific computing?
Belard - Wednesday, August 22, 2012 - link
Yep.... considering that most AAA PC games are just ports from consoles... having 3-4 GPUs is pointless. The returns get worse after the first 2 cards.Only those with 2~6 monitors can benefit with 2-3 cards.
Also, even $80 Gigabyte boards will do 8x x 8x SLI/CF just fine.
But hey, someone wants to spend $300 on a board... more power to them.
cmdrdredd - Wednesday, August 22, 2012 - link
"Only those with 2~6 monitors can benefit with 2-3 cards."Oh really? 2560x1440 on a single card is garbage in my view. I am not happy with 50fps average.
rarson - Wednesday, August 22, 2012 - link
If you're going multi-GPU on a single monitor, you're wasting money.Sabresiberian - Wednesday, August 22, 2012 - link
Because everyone should build to your standards, O god of all things computer.Do some reading; get a clue.
Steveymoo - Thursday, August 23, 2012 - link
Incorrect.If you have a 120hz monitor, 2 GPUs make a tonne of difference. Before you come back with a "no one can see 120hz" jibe. That is also incorrect.... My eyes have orgasms every once in a while when you get those ultra detail 100+ fps moments in battlefield, that look great!
von Krupp - Friday, August 24, 2012 - link
No. Metro 2033 is not happy at 2560x1440 with just a single HD 7970, and neither are Battlefield 3 or Crysis. The Total War series also crawls at maximum settings.I bought the U2711 specifically to take advantage of two cards (and for accurate colours, mind you). I have a distaste for multi-monitor gaming and will continue to have such as long as they keep making bezels on monitors.
So please, don't go claiming that multi-card is useless on a single monitor because that just isn't true.
swing848 - Monday, December 8, 2014 - link
At this date, December 2014, with maximum eye candy turned on, there are games that drop a refrence AMD R9 290 below 60 fps on a single monitor at 1920x1080 [using an Intel i5-3570K at 4GHz to 4.2GHz]Sabresiberian - Wednesday, August 22, 2012 - link
This is not 1998, there are many games built for the PC only, and even previously console-oriented publishers aren't just making ports for the PC, they are developing their games to take advantage of the goodness only PCs can bring to the table. Despite what console fanboys continue to spew, PC gaming is on the rise, and console gaming is on the relative decline.