diff --git a/oz/Guest.py b/oz/Guest.py
index 15bb7763..69d3f42c 100644
--- a/oz/Guest.py
+++ b/oz/Guest.py
@@ -175,11 +175,11 @@ def __init__(self, tdl, config, auto, output_disk, nicmodel, clockoffset,
         self.bridge_name = oz.ozutil.config_get_key(config, 'libvirt',
                                                     'bridge_name', None)
         self.install_cpus = oz.ozutil.config_get_key(config, 'libvirt', 'cpus',
-                                                     1)
+                                                     4)
         # the memory in the configuration file is specified in megabytes, but
         # libvirt expects kilobytes, so multiply by 1024
         self.install_memory = int(oz.ozutil.config_get_key(config, 'libvirt',
-                                                               'memory', 2048)) * 1024
+                                                               'memory', 4096)) * 1024
         self.image_type = oz.ozutil.config_get_key(config, 'libvirt',
                                                    'image_type', 'raw')