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Fatality k6 z170 - kaby lake dont recognize sli Printed From: ASRock.com Category: Technical Support Forum Name: Intel Motherboards Forum Description: Question about ASRock Intel Motherboards URL: https://forum.asrock.com/forum_posts.asp?TID=4208 Printed Date: 22 Jul 2025 at 9:54am Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com Topic: Fatality k6 z170 - kaby lake dont recognize sli Posted By: postem Subject: Fatality k6 z170 - kaby lake dont recognize sli Date Posted: 10 Jan 2017 at 7:25am " rel="nofollow - Hi just purchased a new i7700K. My mother board is fatality k6 z170 bios version 7.2 When i installed the cpu it recognized the cpu, but it dont recognize my second video card, and it is not allowing CPU multiplier in the bios. Do you suggest doing anything to solve this issue? Is bios 7.1 any better on this? Replies: Posted By: postem Date Posted: 10 Jan 2017 at 8:35am Just updating good folks, i checked my bios, it was actually 7.0. Once i updated with the uefi internet update it worked like a champ. Very nice indeed, i really apreciate that even mid tier boards like this one have dual bios. The only thing i miss on the current bios is the option to set a negative multiplier to AVX, but its all fine. Posted By: parsec Date Posted: 10 Jan 2017 at 8:51am " rel="nofollow - postem wrote: Just updating good folks, i checked my bios, it was actually 7.0. Once i updated with the uefi internet update it worked like a champ. Very nice indeed, i really apreciate that even mid tier boards like this one have dual bios. The only thing i miss on the current bios is the option to set a negative multiplier to AVX, but its all fine. The only AVX related multiplier setting I've seen is a (negative) offset setting for the processor Cache multiplier, when AVX instruction are being executed. That's available on a ASRock Z270 board's UEFI/BIOS. Is that what you mean by a negative multiplier? ------------- http://valid.x86.fr/48rujh" rel="nofollow"> Posted By: postem Date Posted: 10 Jan 2017 at 9:25am parsec wrote: " rel="nofollow - postem wrote: Just updating good folks, i checked my bios, it was actually 7.0. Once i updated with the uefi internet update it worked like a champ. Very nice indeed, i really apreciate that even mid tier boards like this one have dual bios. The only thing i miss on the current bios is the option to set a negative multiplier to AVX, but its all fine. The only AVX related multiplier setting I've seen is a (negative) offset setting for the processor Cache multiplier, when AVX instruction are being executed. That's available on a ASRock Z270 board's UEFI/BIOS. Is that what you mean by a negative multiplier? Yes that setting. It seen for now only bios running it are the 270 ones. Not much of a problem anyway, i dont plan to use avx for extended periods, and this fatality board, even being z170 seen to scale nicely with oc. Gonna start ramping the cpu clocks now to find what i can find before delid. Posted By: parsec Date Posted: 10 Jan 2017 at 10:38am postem wrote: parsec wrote: " rel="nofollow - postem wrote: Just updating good folks, i checked my bios, it was actually 7.0. Once i updated with the uefi internet update it worked like a champ. Very nice indeed, i really apreciate that even mid tier boards like this one have dual bios. The only thing i miss on the current bios is the option to set a negative multiplier to AVX, but its all fine. The only AVX related multiplier setting I've seen is a (negative) offset setting for the processor Cache multiplier, when AVX instruction are being executed. That's available on a ASRock Z270 board's UEFI/BIOS. Is that what you mean by a negative multiplier? Yes that setting. It seen for now only bios running it are the 270 ones. Not much of a problem anyway, i dont plan to use avx for extended periods, and this fatality board, even being z170 seen to scale nicely with oc. Gonna start ramping the cpu clocks now to find what i can find before delid. Actually, that option seems to affect both the core and cache multipliers, not just the cache multiplier. I believe it is X99/Broadwell-E HEDT systems that only reduces the cache multiplier with AVX instructions. It sounds like you have used a delidded CPU in the past. Do you go bare die, or use the IHS compressed by the socket latch mechanism? If bare die, do you use anything around the die as a spacer, and/or for protection? ------------- http://valid.x86.fr/48rujh" rel="nofollow"> Posted By: postem Date Posted: 11 Jan 2017 at 10:36am " rel="nofollow - parsec wrote: Actually, that option seems to affect both the core and cache multipliers, not just the cache multiplier. I believe it is X99/Broadwell-E HEDT systems that only reduces the cache multiplier with AVX instructions. It sounds like you have used a delidded CPU in the past. Do you go bare die, or use the IHS compressed by the socket latch mechanism? If bare die, do you use anything around the die as a spacer, and/or for protection? Yep that avx offset should affect both, but im not much worried about the lack of it. From delliding, i heard of very few people doing it without the IHS since ivy bridge. Its not worth the risk, and the trouble, because you need to replace the heatsink mount, since the bare die is a tid lower, and there is a big risk of cracking the die with the mount pressure if you dont do it very even, and also the issues with thinner skylale/kaby pcb. IMO its not worth the risk to run the die without the IHS. Just put it back floating on the retention or reseal using silicone glue or another removable adhesive.

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