| Test System Configuration | |
|---|---|
| CPU | Intel Core i7-5960X (Haswell-E): 3.0-3.5 GHz, 20 MB L3 Cache, LGA 2011-v3 |
| CPU Cooler | Swiftech Apogee GTX, MCP 655b, Triple-Fan Radiator Kit |
| RAM | G.Skill F4-3000C15Q-16GRR (16 GB) DDR4-3000 Quad Channel Kit |
| Graphics | PowerColor LCS AXR9 290X 4GBD5-PPDHE: 1060 MHz GPU, 4 GB GDDR5-5400 |
| Hard Drive | Samsung 470 Series MZ-5PA256, 256 GB SSD |
| Sound | Integrated HD Audio |
| Network | Integrated Gigabit Networking |
| Power | Antec HCP-1200: ATX12V v2.3, EPS12V, 80 PLUS Gold |
| Software | |
| OS | Microsoft Windows 8 Professional RTM x64 |
| Graphics | AMD Catalyst 14.4 |
| Chipset | Intel INF 9.4.2.1019 |
Swiftech’s ancient Apogee GTX keeps appearing in my “Big Socket” reviews, and for good reasons: it has monster capacity, and it’s built into my test bench.
This Prescott-era workhorse was updated six years ago with an LGA 1366 bracket, and today uses that same bracket with newer spring-loaded screws to fit both LGA 2011 and LGA 2011-v3 support mechanisms.

Rumored power-on troubles with C7s-enabled motherboards and certain power supplies finally hit home when I tried to pair our earlier SS-760KM unit with one of the boards in today’s test. Since my newer AX860i was already being used to test other parts, I hauled Antec’s HCP-1200 out of storage. Success!

PowerColor’s LCS AXR9 290X runs quietly on a second cooling loop.
This is a new platform, so memory and the CPU couldn’t be pulled from spare parts. G.Skill’s quad-channel F4-3000C15Q-16GRR DDR4-3000 kit was added with Intel’s Core i7-5960X to today’s parts list.
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- More, Less Or Just Different?
- ASRock X99 Extreme4
- ASRock X99 Extreme4 Software
- ASRock X99 Extreme4 Firmware
- Gigabyte X99-UD4
- Gigabyte X99-UD4 Software
- Gigabyte X99-UD4 Firmware
- MSI X99S Gaming 7
- MSI X99S Gaming 7 Software
- MSI X99S Gaming 7 Firmware
- How We Tested X99 Motherboards
- Results: 3DMark, PCMark And Sandra
- Results: 3D Gaming And Encoding
- Results: Adobe CC, Productivity And File Compression
- Results: Power, Heat And Efficiency
- Results: Overclocking
- Picking A Mid-Priced X99 Winner


Did something change?
12 Phases Six Phases Eight Phases what!
+1
Did something change?
LGA 2011 uses DDR3 while LGA2011-3 uses DDR4 so the sockets are different to prevent people from putting the wrong CPU in the wrong motherboard.
I think there were other changes but this is the big obvious one.
12 Phases Six Phases Eight Phases what!
I see what you did there Intel
It has the features you need because your keyboard and mouse are USB 2.0, not "USB3".
The Firmware-Downgrade-Bug is present since P55 boards and I saw it on EVERY generation, be it 50, 60, 70, 80 or 90 series boards. Not necesserilly on every version of the chipset, e.g. I saw it on a P65 but not on a G61 chipset. But if you have the bug then rest assured they will NEVER fix it.
The P65 was especially nasty, it downgraded the bios even when actually nothing went wrong and all BIOS settings were "default". EG I once pressed Reset and voila, back to F3. Also happens if I disconnect from power, even if the system is actually already shut down. Only way to avoid this is to power down the system safely by the OS. But then you have to switch the system on at least every couple of days or it will downgrade to F3 immediatly after power on.
Gigabyte? No thanks.
(writing this from my old P35 gigabyte system, my last gigabyte in private use)
The Firmware-Downgrade-Bug is present since P55 boards and I saw it on EVERY generation, be it 50, 60, 70, 80 or 90 series boards. Not necesserilly on every version of the chipset, e.g. I saw it on a P65 but not on a G61 chipset. But if you have the bug then rest assured they will NEVER fix it.
The P65 was especially nasty, it downgraded the bios even when actually nothing went wrong and all BIOS settings were "default". EG I once pressed Reset and voila, back to F3. Also happens if I disconnect from power, even if the system is actually already shut down. Only way to avoid this is to power down the system safely by the OS. But then you have to switch the system on at least every couple of days or it will downgrade to F3 immediatly after power on.
Gigabyte? No thanks.
(writing this from my old P35 gigabyte system, my last gigabyte in private use)
Gigabyte also has true dual-BIOS motherboards at the high-end, where the forced downgrade can be disabled. You've probably just missed that little tidbit if you think all Gigabyte boards are like this one.
This is the worst board Gigabyte has sent in a long time, and the first one that I've had to recommend against buying. It's been a few years since I've had a Gigabyte board fail after continuous forced-downgrades.
Gigabyte also has true dual-BIOS motherboards at the high-end, where the forced downgrade can be disabled. You've probably just missed that little tidbit if you think all Gigabyte boards are like this one.
This is the worst board Gigabyte has sent in a long time, and the first one that I've had to recommend against buying. It's been a few years since I've had a Gigabyte board fail after continuous forced-downgrades.
Gigabyte obviously doesn't like that we told you any of this. But to not tell you would be to lie. Its PR are nice people, but I can't lie for them, so it looks like they'll probably pack up their toys and go home.
Gigabyte PR people might be nice people, but there's only so much one can do about pumping up poor hardware design.
I've had four Gigabyte motherboards, and I've had hardware compatibility issues with them all. I've had bios issues with three, where I've needed a new bios to support a new generation of processors, but the new version doesn't work well. The latest one was my x79-UP4 board, where it didn't like my EVGA GTX 680 with the F2 bios, and the F4 bios caused the screen saver and power saver features to never turn on, and it took their support nearly two weeks to get me a program that would allow back dating the bios to the F3, which finally worked. The audio plugs never detected when speakers were plugged in, so I couldn't use the on-board audio. Finally, after 9 months of annoyances, it stopped giving power to the USB ports and the PCIe x1 slots, so I lost access to pretty much everything. It was a slow, horrible death for a bad motherboard. I'm not buying a Gigabyte product again.
They don't need PR. They need to get their heads on straight and engineer their boards better, and test better. Testing is a basic necessity for any technology design. I am a systems admin for three test labs for enterprise level hardware and software. I have seen how many bugs we find and exterminate through our testing, and I have seen how it has affected the quality of our products as management decided to reduce the complexity of our testing. Above all, I have seen how it has affected our sales. Gigabyte has never been very good at their testing. If they want to compete, they need to get off their high horse and confront the criticisms for what they are: a chance to change. If they're pulling their products from being reviewed on this site because of these criticisms, then they have shown their attitude, and nobody should be buying from them anyway.
The response from APC on the power strip teardown shows how a successful company reacts to criticism. Gigabyte's reaction will show if they're up to the task of staying in business.