Help! Maximus VIII Hero + Kaby Lake?

[JP3]

I impulsively bought the I7 7700k for my new build along with an Asus Maximus VIII Hero motherboard.

I just realized they might not be compatible without updated BIOS... Is it possible to update the BIOS on this Mobo without without a Skylake processor? can I fix this?

[Goodman2265]

i7 7700K offers literally no performance gain over 6700k. I'd suggest you'd return it tbh.

 

Also some mobos have a dedicate USB port on the back for sticking a USB in and updating the BiOS without a CPU. Just go to your mobos spec page

[JP3]

1 minute ago, Goodman2265 said:

i7 7700K offers literally no performance gain over 6700k. I'd suggest you'd return it tbh.

 

Also some mobos have a dedicate USB port on the back for sticking a USB in and updating the BiOS without a CPU. Just go to your mobos spec page

It was basically the same price as the 6700k, and it clocks higher at equal tdp and power, so I wouldnt say it's completely a waste. it can probably also overclock higher, so for the same price, why downgrade? I'm just worried I wont be able to use it at all when the rest of my build gets here.

[Cyracus]

Think this applies to you https://rog.asus.com/technology/rog-motherboard-innovations/usb-bios-flashback/

[Goodman2265]

3 minutes ago, JP3 said:

It was basically the same price as the 6700k, and it clocks higher at equal tdp and power, so I wouldnt say it's completely a waste. it can probably also overclock higher, so for the same price, why downgrade? I'm just worried I wont be able to use it at all when the rest of my build gets here.

7700k actually uses more power. Also the max overclock difference between the two is ~6%. So virtually no difference.

[JP3]

2 minutes ago, Goodman2265 said:

7700k actually uses more power. Also the max overclock difference between the two is ~6%. So virtually no difference.

 

I believe they're both rated at 91W. But, like I said, even though the performance increase may be negligible, its still a "boost" for the basically the same price. 

[Goodman2265]

2 minutes ago, JP3 said:

I believe they're both rated at 91W. But, like I said, even though the performance increase may be negligible, its still a "boost" for the basically the same price. 

 

 

[Paradine Sage]

30 minutes ago, Goodman2265 said:

7700k actually uses more power. Also the max overclock difference between the two is ~6%. So virtually no difference.

Given that Gigabyte has fucked up their UEFI for Kaby Lake at the moment and is massively over-volting the chip, you need far more detail on the specific testing methodology used for that claim to be accepted as accurate.

 

And no, the 7700k is an across the board performance boost with more features when compared to the 6700k for the same price. You should not be recommending that someone buy the 6700k for a new build at the moment when they 7700k costs the exact same amount of money, that is just straight up bad advice.

 

I would also note this picture.

The 7700k @4.0 Ghz and 1.176V has a total system power consumption under load of 111 while the 6700k @4.0 Ghz and 1.176V has a total system power consumption under load of 112.

 

At the same clock and same voltage the 7700k uses less power.

[Cyracus]

The testing that I've seen done shows the 7700k and 6700k performing within margin of error of each other at the same clocks all else being equal. As for voltage requirements and temps, looks like it still depends on the silicon lottery

[JP3]

1 minute ago, Cyracus said:

The testing that I've seen done shows the 7700k and 6700k performing within margin of error of each other at the same clocks all else being equal. As for voltage requirements and temps, looks like it still depends on the silicon lottery

How lucky would I have to be for a stable 5.0Ghz overclock on the Max8 Hero with the 7700k?

[Cyracus]

4 minutes ago, JP3 said:

How lucky would I have to be for a stable 5.0Ghz overclock on the Max8 Hero with the 7700k?

All the tests I've seen haven't failed to hit 5 Ghz under 1.4v, so probably not very

[JP3]

2 minutes ago, Cyracus said:

All the tests I've seen haven't failed to hit 5 Ghz under 1.4v, so probably not very

I see. What's the max voltage you would recommend to maintain everything stable and safe?

[patric_o]

I had the same issue a few years back with an i7-4770k and an Asus mobo. I was able to do it through USB back then so I'm pretty sure they kept that feature considering how useful it is.

[Cyracus]

13 minutes ago, JP3 said:

I see. What's the max voltage you would recommend to maintain everything stable and safe?

Should be the same as skylake which is considered safe under 1.4v

[Paradine Sage]

24 minutes ago, JP3 said:

I see. What's the max voltage you would recommend to maintain everything stable and safe?

For daily use and assuming an AIO, 1.3 to 1.35v is about the highest I would push. Honestly you are probably fine at 1.4 but I prefer the bit of extra margin for added stability.

 

Since you are using Kaby Lake as opposed to Skylake, remember to set your AVX offset when you overclock. 3 is a good value for that. This will downclock your CPU when it handles AVX applications. This is one of the reasons that an otherwise stable Skylake OC would suddenly crash in some applications as AVX needs more power for the same clock speed and so the clock is no longer stable.

[Anand7]

So did you figure out a way to get your 7700k running on your M8H?

[Kenrou]

I would say not 100% stable (or not overclocked) without a better BIOS, both 2202 and 3101 are absolute garbage.

[JP3]

16 hours ago, Anand7 said:

So did you figure out a way to get your 7700k running on your M8H?

I'ts running good, I overclocked at 4.8Ghz, but I'm getting mid to low 80C on my CPU... idk if thats very good.

 

[Anand7]

And which bios version you're using? 
Plus how easy was it to update the bios without a processor?

I'm just curious because I got the 7700k and my m8h is in the mail...lol