If you hadn't already heard, the 6950X 10-core $1700 beast isn't the best overclocker. I cannot validate CPU frequency anywhere near 5GHz, and I cannot even boot at 4.5GHz, but I can run 4.4GHz on all cores. I have decided to change how I do the overclocking section and determine exactly what it takes to push to the CPU to this maximum stable frequency on the different motherboards I test.
GIGABYTE's motherboard has almost no auto rules (at least none that I noticed) that would increase voltages automatically with frequency increases. It's good because the motherboard won't auto-increase voltages without you knowing exactly what is being set, but it does mean you will have to dial in voltages yourself. I assume GIGABYTE will add in auto rules for overclocking voltages, specifically memory and cache, but right now you should manually set them.
For rough estimates, you can use the same voltage levels I spelled out in my 5960X OC guide, as the same voltages seem to do the same things on both CPU generations. I did not gain much from increasing the VL voltages for the extra pins. I was able to easily pull off a 4.4GHz OC, and I was able to execute Handbrake 4K transcoding of a 4K video to 1080p.
Here we have the 32GB quad-channel Dominator Platinum kit from Corsair. It runs at 3200MHz CAS 16, and the X99-Phoenix SLI was able to run it by just enabling XMP.
The second kit for memory compatibility testing is the G.Skill TridentZ 3200MHz CAS 14 32GB quad channel kit. The X99-Phoenix SLI also had no issue running this kit.
PRICING: You can find the GIGABYTE X99-Phoenix SLI (Intel X99) 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 States: The GIGABYTE X99-Phoenix SLI (Intel X99) Motherboard retails for $373 at Amazon.
United Kingdom: Find other tech and computer products like this over at Amazon UK's website.
- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and X99-Phoenix SLI Overview ]
- Page 3 [GIGABYTE X99-Phoenix SLI Circuit Analysis]
- Page 4 [GIGABYTE X99-Phoenix SLI 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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