I have decided to reduce the CPU VCore to 1.4v applied (I will measure real VCore at the output capacitors), and see how high I can validate. On most boards its 5.0. I have also decided to add real voltage levels compared to what is set for all motherboards, if they don't have voltage read points I will mark where I got the readings from.
The Maximus VIII Extreme is doing 5.0GHz just like the high-end motherboards which isn't too surprising considering the low power requirements of the 6700K, but the VRM did have strong, active cooling, so keep that in mind. CPU-Z is misreading VCore in this image as the CPU-Z ini file is for the non-skin version.
I tested stability at 4.8GHz CPU, 4.1GHz Uncore, and 2666MHz on the memory with 1.4v on the VCore. I am using HandBrake to transcode a 2GB video, and it is very telling since it pulls all cores to the maximum frequency and load. Handbrake is good for a quick stability check, plus I get a log of the encoding speed and the number of errors. It is very easy for the queue not to finish all the way and just error out, and 1-3 hours of AIDA is about equal to this HandBrake test, so I am replacing it.
The LLC is quite strong, and the motherboard provides many levels. This board is ready for high current high frequency overclocks as well as normal air/water overclocking. Voltage read points are located on pads at the top right-hand corner.
Test 1: 4x4GB (32GB) Corsair VENGEANCE LPX 2666MHz C16
The Maximus VIII Extreme passed this test with flying colors. To be clear, this is two kits of 16GB Vengeance LXP memory not meant to be run together in most situations.
Test 2: 4x4GB (16GB) Corsair Dominator Platinum 3200MHz C16
The Corsair Dominator Platinum is kit meant for X99 and XMP didn't initially work but loading the Old Single Sided Samsung 3200Mhz C15 T1 profile that is much more aggressive than XMP worked well. So if XMP doesn't work, you should look to the built-in memory OC profiles as there are many.
Test 3:2x4GB (8GB) G.Skill Ripjaws V 3600MHz C17
The Ripjaws V kit doesn't work on all motherboards. Usually, only overclocking models can even boot this kit by just enabling XMP. The Maximus VIII Extreme runs this kit at 3600MHz like it's taking a stroll in the park.
Test 4:2x4GB (8GB) G.Skill TridentZ 3733MHz C17
The Trident X kit is extreme. While some boards can run 3600Mhz, 3733Mhz is on the edge of supported XMP speeds for most board. The Maximus
PRICING: You can find the ASUS ROG Maximus VIII Extreme (Intel Z170) Motherboard for sale below. The prices listed are valid at the time of writing, but can change at any time. Click the link below to see real-time pricing for the best deal:
United Kingdom: Find other tech and computer products like this over at Amazon UK's website.
Canada: Find other tech and computer products like this over at Amazon Canada's website.
- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and Maximus VIII Extreme Overview]
- Page 3 [ASUS Maximus VIII Extreme Circuit Analysis]
- Page 4 [ASUS Maximus VIII Extreme Circuit Analysis Continued]
- Page 5 [BIOS and Software]
- Page 6 [Test System Setup]
- Page 7 [Overclocking]
- Page 8 [CPU, Memory, and System Benchmarks]
- Page 9 [System IO Benchmarks]
- Page 10 [Thermal Imaging and Power Consumption]
- Page 11 [What's Hot, What's Not & Final Thoughts]
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