Index: head/sysutils/Makefile
===================================================================
--- head/sysutils/Makefile
+++ head/sysutils/Makefile
@@ -512,6 +512,7 @@
     SUBDIR += intel-pcm
     SUBDIR += intel-pcm-devel
     SUBDIR += intel-qcu
+    SUBDIR += intel-undervolt
     SUBDIR += iocage
     SUBDIR += iocage-devel
     SUBDIR += iocell
Index: head/sysutils/intel-undervolt/Makefile
===================================================================
--- head/sysutils/intel-undervolt/Makefile
+++ head/sysutils/intel-undervolt/Makefile
@@ -0,0 +1,34 @@
+# $FreeBSD$
+
+PORTNAME=	intel-undervolt
+DISTVERSION=	1.5-7
+DISTVERSIONSUFFIX=	-g66cfb65
+CATEGORIES=	sysutils
+
+MAINTAINER=	greg@unrelenting.technology
+COMMENT=	Intel CPU undervolting tool
+
+LICENSE=	GPLv3
+LICENSE_FILE=	${WRKSRC}/COPYING
+
+RUN_DEPENDS=	bash:shells/bash
+
+USES=		gmake
+USE_GITHUB=	yes
+GH_ACCOUNT=	kitsunyan
+
+MAKE_ARGS=	CC="${CC}" SYSCONFDIR="${PREFIX}/etc"
+
+PLIST_FILES=	bin/${PORTNAME} \
+		"@sample etc/${PORTNAME}.conf.sample"
+
+post-patch:
+	${REINPLACE_CMD} "s|/bin/bash|${LOCALBASE}/bin/bash|g" ${WRKSRC}/config.c
+
+do-install:
+	${INSTALL_PROGRAM} ${WRKSRC}/${PORTNAME} \
+		${STAGEDIR}${PREFIX}/bin/
+	${INSTALL_DATA} ${WRKSRC}/${PORTNAME}.conf \
+		${STAGEDIR}${PREFIX}/etc/${PORTNAME}.conf.sample
+
+.include <bsd.port.mk>
Index: head/sysutils/intel-undervolt/distinfo
===================================================================
--- head/sysutils/intel-undervolt/distinfo
+++ head/sysutils/intel-undervolt/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1546513030
+SHA256 (kitsunyan-intel-undervolt-1.5-7-g66cfb65_GH0.tar.gz) = 4e0142f24d81dd1aec0b82e94e1773360f2c7277f6833a8207dcdbbae9da11ef
+SIZE (kitsunyan-intel-undervolt-1.5-7-g66cfb65_GH0.tar.gz) = 18777
Index: head/sysutils/intel-undervolt/pkg-descr
===================================================================
--- head/sysutils/intel-undervolt/pkg-descr
+++ head/sysutils/intel-undervolt/pkg-descr
@@ -0,0 +1,7 @@
+intel-undervolt is a tool for undervolting Haswell and newer Intel
+CPUs using MSR.  Also allows to alter power limits and temperature
+limit using MSR and MCHBAR registers.
+
+Use at your own risk.
+
+WWW: https://github.com/kitsunyan/intel-undervolt