ASUS P9X79 Deluxe Motherboard
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- 8 x DIMM slots, Quad-channel DDR3 2400(O.C.)/2133(O.C.)/1866/1600/1333/1066 MHz support^Digital 16+4 phase power design^3 x PCIe 3.0 x 16 (dual @ x 16; triple @ x 16 / x 8 / x 8); 1 x PCIe 3.0 x 16 (@ x 8) + 2 x PCIe 2.0 x 1^AMD Quad-GPU CrossFireX and NVIDIA 3-way SLI support^Dual GB LAN featuring the latest Intel 82579V and Realtek 8111E chipsets^Bluetooth v3.0 + HS (Bluetooth v2.1 + EDR and WiFi 802.11 b/g/n)^ASUS UEFI (Unified Extensible Firmware Interface) BIOS^ASUS SSD caching - one click away from experiencing the benefits of both SSD and HDD without any capacity limitation
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P9X79 DELUXE features the Intel X79 chipset supporting the Intel LGA2011 2nd generation Intel Core i7 processors. 8-DIMM design provides maximum performance and versatility of memory configuration. Dual Intelligent Processors 3 technology integrated with new DIGI+ power control capable of achieving most precise adjustment, enhanced performance, stability and O.C. capacity for CPU and RAM. Fully ready for true PCIe 3.0, built to be future-proof with PCIe 3.0 switching IC for NVIDIA SLI support and future PCIe 3.0 peripherals. ASUS SSD caching with no SSD capacity limitation, and it is as easy as one-click away.
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Most helpful customer reviews on Amazon.com
I googled extensively, and learned a lot more than I was willing to do to make 64GB, then 32GB work with this board. Basically some memory banks are faulty. You can't just follow the recommended banks to populate them.
In my case, the only way to use 32GB was to populate B1,B2 and D1,D2 banks. And then only boots at 800GHZ, not 1600. It overclocks easily to 4.1/3.9, you choose, but memory gets underclocked heavily, or it won't boot.
Also the memory banks A1 and A2 simply won't work for me. They worked at first, but even after resetting bios, clearing CMOS, they stopped doing that.
I googled too much and wasted too much time trying to make this work. First I got disappointed with my Transformer Prime, now this. Asus, please, get your act together. I spent hours on this, it's a lot of money, plus the hassle of returning this.
Note that 4, 8, even 16GB works fine (as long as you don't use a1 and a2...). Asus QVL list doesn't list a single bank vendor capable of filling all slots, so THEY KNOW ABOUT THIS. They test with 2 and 4GB banks mostly, you don't see QVL with fast 8GB banks each: you see only Corsair with 4GB modules qualified for 16GB max - WHY? Go ahead and see for yourself on the ASUS website/manual.
But why would you buy this board if that's all you really need/want?
So I dropped an Intel Core I7 4820K 3.7Ghz LGA2011 CPU into both boards and set them up in a case ready to boot. On both machines I get nothing, no boot, no error codes, nothing and a red CPU LED. After researching Asus support site on how to use the Flash BIOS feature, a big reason I bought these boards, I do what I’ve done dozens of times before with my other board, download the latest BIOS file and use the Flash BIOS to install. Usually this fixes all problems and you up and going in minutes.
This time so such luck. What makes this a bad experience is that the support from Asus appears to be nonexistent. So I’ve turned to other resources like Tom’s Hardware and the HardForum, where I read post after post going back as far as 2011 of others who have had the same experience with this board. They can’t get a response from Asus and they are left with having to purchase a new BIOS chip, crack open the motherboard, which voids the warranty and replace the ROM to get a new BIOS installed. A customer should never have to do this on a new board.
I’m miffed in a serious way at the moment, so I apologize in advance if I’m coming across too harshly, but after spending $1200.00 for top of the line hardware, I expect top of line support and can’t get it.
To anyone thinking of buying a P9X79 Deluxe I say, save your money and get something else, in fact, if this is business as usual when it comes to support from Asus, you may want to consider another hardware maker altogether. And if you’re having problems now, return your product and get something else before the clock runs out on your ability to return the item.
For this board I wouldn’t even give Asus 1 star, but I had to so I could make this post.
Issue #2: At some point I started noticing stability problems, so I ran a RAM test. There's a predictable memory location that always fails when all four channels are in use, but runs well when ANY ONE OF THE MODULES is removed. I've tried changing the order of the modules, and the same memory location always fails. I've tried underclocking and raising the voltage slightly to no effect.
Issue #3: There are a bunch of random power management issues I've run across (think on/off/restart). The BIOS has hung on boot several times, but that could be related to issues #1 and #2.
I've spent a lot of time trying to get this motherboard to work well to no avail. I'm willing to admit I sometimes misdiagnose issues, but given the sheer number of signs that point to the motherboard I'm forced to give this product a thumbs down.