diff --git a/repos/ports/run/vbox4_win7_64_multiple.run b/repos/ports/run/vbox4_win7_64_multiple.run
index 9dd4b778b4..4b336168b2 100644
--- a/repos/ports/run/vbox4_win7_64_multiple.run
+++ b/repos/ports/run/vbox4_win7_64_multiple.run
@@ -15,6 +15,7 @@
 assert_spec 64bit
 
 set flavor   "win7_64"
+set flavor_extension "_multiple"
 set vm_ram   "1280M"
 
 set use_vbox4 1
@@ -31,6 +32,6 @@ set use_ps2 [have_spec ps2]
 
 set use_vms 6
 set affinity_space_width 8
-set use_cpu_load 1
+set use_cpu_load 0
 
 source ${genode_dir}/repos/ports/run/vbox_win.inc
diff --git a/repos/ports/run/vbox5_win7_64_multiple.run b/repos/ports/run/vbox5_win7_64_multiple.run
index 748b0efeee..679313b4ae 100644
--- a/repos/ports/run/vbox5_win7_64_multiple.run
+++ b/repos/ports/run/vbox5_win7_64_multiple.run
@@ -15,6 +15,7 @@
 assert_spec 64bit
 
 set flavor   "win7_64"
+set flavor_extension "_multiple"
 set vm_ram   "1280M"
 
 set use_vbox4 0
@@ -31,6 +32,6 @@ set use_ps2 [have_spec ps2]
 
 set use_vms 6
 set affinity_space_width 8
-set use_cpu_load 1
+set use_cpu_load 0
 
 source ${genode_dir}/repos/ports/run/vbox_win.inc
diff --git a/repos/ports/run/vbox_win.inc b/repos/ports/run/vbox_win.inc
index cbfa3d6e3e..c564340508 100644
--- a/repos/ports/run/vbox_win.inc
+++ b/repos/ports/run/vbox_win.inc
@@ -19,6 +19,10 @@ set raw_image "${flavor}.vmdk"
 set vbox_file "vm_${flavor}.vbox"
 set overlay_image "overlay_${flavor}.vdi"
 
+if {[info exists flavor_extension]} {
+	set vbox_file "vm_${flavor}${flavor_extension}.vbox"
+}
+
 set build_components {
 	server/input_merger
 	drivers/nic
@@ -247,7 +251,7 @@ append config_of_app {
 
 for { set i 1} { $i <= $use_vms } { incr i} {
 	append config_of_app "
-	<start name=\"vbox${i}\" priority=\"-2\" caps=\"600\">"
+	<start name=\"vbox${i}\" priority=\"-2\" caps=\"800\">"
 	append_if [expr $use_vbox4] config_of_app "
 		<binary name=\"$virtualbox_binary\" />"
 	append_if [expr $use_vbox5] config_of_app "
@@ -328,7 +332,7 @@ run_genode_until {\[init -\> vbox.*].*Guest Additions capability report:.*seamle
 if {$use_rumpfs} {
 	set wait_timeout 170
 	for { set i 1 } { $i <= $use_vms } { incr i } {
-		if { [string match "ubuntu*" $flavor] } {
+		if { [string match "ubuntu*" $flavor] || [string match "win81*" $flavor] } {
 			run_genode_until {\[init -\> vbox.*].*Guest Additions capability report:.*seamless: yes, hostWindowMapping: no, graphics: no} $wait_timeout [output_spawn_id]
 		} else {
 			run_genode_until {\[init -\> vbox.*].*Guest Additions capability report:.*seamless: yes, hostWindowMapping: no, graphics: yes} $wait_timeout [output_spawn_id]
diff --git a/repos/ports/run/virtualbox_auto.inc b/repos/ports/run/virtualbox_auto.inc
index a30fa67b9a..a093360feb 100644
--- a/repos/ports/run/virtualbox_auto.inc
+++ b/repos/ports/run/virtualbox_auto.inc
@@ -127,7 +127,7 @@ append_if [expr $use_rumpfs] config {
 	</start>}
 
 append_if [expr $use_ram_fs] config {
-	<start name="ram_fs" priority="-1" caps="400">}
+	<start name="ram_fs" priority="-1" caps="1800">}
 append_if [expr $use_ram_fs] config "
 		<resource name=\"RAM\" quantum=\"[expr $use_vms * 8 * 128]M\"/>"
 append_if [expr $use_ram_fs] config {
@@ -304,7 +304,7 @@ append_if [expr $use_usb] config {
 	</start>
 
 	<start name="usb_drv" priority="-1">
-		<resource name="RAM" quantum="16M"/>
+		<resource name="RAM" quantum="20M"/>
 		<provides>
 			<service name="Input"/>
 			<service name="Usb"/>
diff --git a/repos/ports/run/vm_win7_64_multiple.vbox b/repos/ports/run/vm_win7_64_multiple.vbox
new file mode 100644
index 0000000000..89780f3a4a
--- /dev/null
+++ b/repos/ports/run/vm_win7_64_multiple.vbox
@@ -0,0 +1,102 @@
+<?xml version="1.0"?>
+<!--
+** DO NOT EDIT THIS FILE.
+** If you make changes to this file while any VirtualBox related application
+** is running, your changes will be overwritten later, without taking effect.
+** Use VBoxManage or the VirtualBox Manager GUI to make changes.
+-->
+<VirtualBox xmlns="http://www.innotek.de/VirtualBox-settings" version="1.14-linux">
+  <Machine uuid="{37ab43a5-38d8-4491-93f5-5b0b077f5c32}" name="Win7" OSType="Windows7" snapshotFolder="Snapshots" lastStateChange="2014-11-14T11:58:35Z">
+    <MediaRegistry>
+      <HardDisks>
+        <HardDisk uuid="{fee5d584-f5ad-4eea-a761-3c215cdf9eb1}" location="/win7_64.vdi" format="VDI" type="Immutable">
+          <HardDisk uuid="{3d9a9193-0fe7-4f8c-8e1b-065dbf514c82}" location="/ram/overlay_win7_64.vdi" format="VDI" autoReset="true"/>
+        </HardDisk>
+      </HardDisks>
+      <DVDImages/>
+      <FloppyImages/>
+    </MediaRegistry>
+    <ExtraData>
+      <ExtraDataItem name="GUI/LastGuestSizeHint" value="1024,768"/>
+      <ExtraDataItem name="GUI/LastNormalWindowPosition" value="513,100,1024,790"/>
+    </ExtraData>
+    <Hardware version="2">
+      <CPU count="2" hotplug="false">
+        <HardwareVirtEx enabled="true"/>
+        <HardwareVirtExNestedPaging enabled="true"/>
+        <HardwareVirtExVPID enabled="true"/>
+        <HardwareVirtExUX enabled="true"/>
+        <PAE enabled="true"/>
+        <LongMode enabled="true"/>
+        <HardwareVirtExLargePages enabled="false"/>
+        <HardwareVirtForce enabled="false"/>
+      </CPU>
+      <Memory RAMSize="1024" PageFusion="false"/>
+      <HID Pointing="PS2Mouse" Keyboard="PS2Keyboard"/>
+      <HPET enabled="false"/>
+      <Chipset type="PIIX3"/>
+      <Boot>
+        <Order position="1" device="Floppy"/>
+        <Order position="2" device="DVD"/>
+        <Order position="3" device="HardDisk"/>
+        <Order position="4" device="None"/>
+      </Boot>
+      <Display VRAMSize="20" monitorCount="1" accelerate3D="false" accelerate2DVideo="false"/>
+      <VideoCapture enabled="false" screens="18446744073709551615" horzRes="1024" vertRes="768" rate="512" fps="25"/>
+      <RemoteDisplay enabled="false" authType="Null"/>
+      <BIOS>
+        <ACPI enabled="true"/>
+        <IOAPIC enabled="true"/>
+        <Logo fadeIn="true" fadeOut="true" displayTime="0"/>
+        <BootMenu mode="MessageAndMenu"/>
+        <TimeOffset value="0"/>
+        <PXEDebug enabled="false"/>
+      </BIOS>
+      <USB>
+        <Controllers>
+          <Controller name="OHCI" type="OHCI"/>
+        </Controllers>
+        <DeviceFilters/>
+      </USB>
+      <Network>
+        <Adapter slot="0" enabled="false" MACAddress="0800271D7901" cable="true" speed="0" type="82540EM">
+          <HostInterface/>
+          <DisabledModes/>
+        </Adapter>
+      </Network>
+      <UART>
+        <Port slot="0" enabled="false" IOBase="0x3f8" IRQ="4" hostMode="Disconnected"/>
+        <Port slot="1" enabled="false" IOBase="0x2f8" IRQ="3" hostMode="Disconnected"/>
+      </UART>
+      <LPT>
+        <Port slot="0" enabled="false" IOBase="0x378" IRQ="7"/>
+        <Port slot="1" enabled="false" IOBase="0x378" IRQ="7"/>
+      </LPT>
+      <AudioAdapter controller="HDA" driver="Pulse" enabled="false"/>
+      <RTC localOrUTC="UTC"/>
+      <SharedFolders/>
+      <Clipboard mode="Disabled"/>
+      <DragAndDrop mode="Disabled"/>
+      <IO>
+        <IoCache enabled="true" size="5"/>
+        <BandwidthGroups/>
+      </IO>
+      <HostPci>
+        <Devices/>
+      </HostPci>
+      <EmulatedUSB>
+        <CardReader enabled="false"/>
+      </EmulatedUSB>
+      <Guest memoryBalloonSize="0"/>
+      <GuestProperties/>
+    </Hardware>
+    <StorageControllers>
+      <StorageController name="SATA" type="AHCI" PortCount="2" useHostIOCache="true" Bootable="true">
+        <AttachedDevice type="HardDisk" port="0" device="0">
+          <Image uuid="{3d9a9193-0fe7-4f8c-8e1b-065dbf514c82}"/>
+        </AttachedDevice>
+        <AttachedDevice passthrough="false" type="DVD" port="1" device="0"/>
+      </StorageController>
+    </StorageControllers>
+  </Machine>
+</VirtualBox>