Motherboard Mini-STX with Kaby Lake?

[janas19]

I've just got my hands on a Kaby Lake Pentium G4600 with HD Graphics 630 and 1100 MHz Turbo IGP clock. I want to boost the IGP as much as possible with the fastest memory speeds. What options are there for Mini-STX?

I know there's Corsair Platinum and HyperX Savage DDR4 2400 CL12 speed memory for standard DIMM motherboards, but what options are available for Mini-STX? I can only seem to find two Mini-STX motherboards with LGA 1151, and they are both H110 chipsets. Will they support DDR4 2400?

 

[|||]

7th gen processors support up to 2400MHz DRAM on non-Z motherboards and 6th gen will only go up to 2133MHz.

 

[janas19]

7th gen processors support up to 2400MHz DRAM on non-Z motherboards and 6th gen will only go up to 2133MHz.

Would you happen to have any confirmation on this? Others have said the RAM speed is limited by the chipset.

 

[jtd871]

I believe that the memory speed in this case is limited by both CPU and chipset for non-K Intel CPUs. Skylake non-K CPUS only support 2133 regardless of chipset, Kaby Lake non-K will support 2400 on some Union Point (200-series) chipsets. Relevant summary here.

 

[janas19]

I believe that the memory speed in this case is limited by both CPU and chipset for non-K Intel CPUs. Skylake non-K CPUS only support 2133 regardless of chipset, Kaby Lake non-K will support 2400 on some Union Point (200-series) chipsets. Relevant summary here.

OK, thank you. So the table in that article says H110 supports DDR4 2100 and DDR3 1600 memory speeds. Which means that if I choose a Mini-STX motherboard, the IGP will be running off 2133 memory not 2400.

Unless anybody knows something I don't? Damn, that sucks!

 

[|||]

That was probably published before the 7th gen processors came out. If you look at ark.intel.com you'll see the supported memory speeds are listed with the processor and not the chipset. The chipset only determines whether or not you can overclock the memory speeds.

 

[janas19]

That was probably published before the 7th gen processors came out. If you look at ark.intel.com you'll see the supported memory speeds are listed with the processor and not the chipset. The chipset only determines whether or not you can overclock the memory speeds.

Ahh, that would explain the discrepancy. Thanks! In that case, I'll be purchasing the ASrock Deskmini with HyperX Impact 2400 C14 memory.

Do you think this combo will have better IGP performance than the Broadwell i5/i7 with Iris Pro 6200 and eDRAM?

 

[jtd871]

Well, the good news is 2400 doesn't cost noticeably any more than 2133, so let us know how it goes.

 

[janas19]

Yeah, I figure I'll just buy some cheaper DDR4 2400 without worrying about C latency, and give it a whirl. If it doesn't perform well no big loss.

 

[mantide]

That was probably published before the 7th gen processors came out. If you look at ark.intel.com you'll see the supported memory speeds are listed with the processor and not the chipset. The chipset only determines whether or not you can overclock the memory speeds.

I am afraid the memory speed is also limited by PCH.
I actually have known this for about 5 years. It's always like this.
And I just run a quick test with B150 + Kaby Lake + Trident Z 3200, speed is locked @ 2133.

 

[|||]

PCH = Platform Controller Hub aka chipset

Either the 100-series is still limiting the memory rate, or it could just be an out-of-date BIOS, where a BIOS flash could let you go up to 2400MHz.

 

[mantide]

PCH = Platform Controller Hub aka chipset

Either the 100-series is still limiting the memory rate, or it could just be an out-of-date BIOS, where a BIOS flash could let you go up to 2400MHz.

You are right, BIOS is the key, But my BIOS is ready for Kaby-Lake, no luck.

 

[janas19]

You are right, BIOS is the key, But my BIOS is ready for Kaby-Lake, no luck.

So yesterday I installed DDR4 2400 on my B250 motherboard with G4600. On the System Info box it said DDR4 2133, but under XMP Profile it said DDR4 2400. Is it possible that your motherboard might show a higher speed under XMP settings?

 

[EdZ]

Yup, many motherboards do not enable the XMP profile by default, and stick to only JEDEC timings unless manually switched.

 

[jtd871]

@janas19, thanks for sharing the results of your experiment. Let us know how it works in the mSTX.

 

[mantide]

That was probably published before the 7th gen processors came out. If you look at ark.intel.com you'll see the supported memory speeds are listed with the processor and not the chipset. The chipset only determines whether or not you can overclock the memory speeds.

2400 is supported officially now, you are right!
"Supports DDR4 2400MHz, 2 x SO-DIMM Slots, Max. 32GB"
http://www.asrock.com/nettop/intel/Deskmini 110 Series/index.asp#Specification

 

[mantide]

I've just got my hands on a Kaby Lake Pentium G4600 with HD Graphics 630 and 1100 MHz Turbo IGP clock. I want to boost the IGP as much as possible with the fastest memory speeds. What options are there for Mini-STX?

I know there's Corsair Platinum and HyperX Savage DDR4 2400 CL12 speed memory for standard DIMM motherboards, but what options are available for Mini-STX? I can only seem to find two Mini-STX motherboards with LGA 1151, and they are both H110 chipsets. Will they support DDR4 2400?

I now have Deskmini and G4600 installed, using a single 4g 2133 DRAM now(I know it's not proper for IGP performance, will change later). May I ask how do you increase IGP performance?

 

[janas19]

@janas19, thanks for sharing the results of your experiment. Let us know how it works in the mSTX.

Probably won't follow through. I did acquire a B250 motherboard and 8GB DDR4 2400, however I've since learned Broadwell with eDRAM is even more powerful. Also DDR4 is quite expensive.

I ended up reverting to a Haswell i3-4170 plus a low profile GT 740 which is both cheaper and better than Kaby Lake IGP setup.