diff --git a/src/machine/m_at_socket370.c b/src/machine/m_at_socket370.c
index 4bd1a9fc0..9a3e5f3c4 100644
--- a/src/machine/m_at_socket370.c
+++ b/src/machine/m_at_socket370.c
@@ -356,7 +356,7 @@ machine_at_wcf681_init(const machine_t *model)
     device_add(&w83977tf_device);
     device_add(&keyboard_ps2_ami_pci_device);
     device_add(&sst_flash_39sf020_device);
-    spd_register(SPD_TYPE_SDRAM, 0x3, 256);
+    spd_register(SPD_TYPE_SDRAM, 0x3, 512);
     device_add(&w83781d_device); /* fans: CPU, unused, unused; temperatures: System, unused, CPU */
     hwm_values.voltages[1] = 2500; /* +2.5V */
     hwm_values.fans[1] = 0; /* unused */
@@ -393,7 +393,7 @@ machine_at_6via85x_init(const machine_t *model)
     device_add(&via_vt82c686_sio_device);
     device_add(&keyboard_ps2_ami_pci_device);
     device_add(&sst_flash_39sf020_device);
-    spd_register(SPD_TYPE_SDRAM, 0x7, 256);
+    spd_register(SPD_TYPE_SDRAM, 0x7, 512);
     device_add(&via_vt82c686_hwm_device); /* fans: CPU1, CPU2; temperatures: CPU, System, unused */
     hwm_values.temperatures[0] += 2; /* CPU offset */
     hwm_values.temperatures[1] += 2; /* System offset */
@@ -428,7 +428,7 @@ machine_at_603tcf_init(const machine_t *model)
     device_add(&via_vt82c686_sio_device);
     device_add(&keyboard_ps2_ami_pci_device);
     device_add(&sst_flash_39sf020_device);
-    spd_register(SPD_TYPE_SDRAM, 0x3, 256);
+    spd_register(SPD_TYPE_SDRAM, 0x3, 512);
     device_add(&via_vt82c686_hwm_device); /* fans: 1, 2; temperatures: CPU, System, unused */
     hwm_values.temperatures[0] += 2; /* CPU offset */
     hwm_values.temperatures[1] += 2; /* System offset */
diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index 3e2c3c580..588b0430b 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -375,10 +375,10 @@ const machine_t machines[] = {
 
     /* VIA Apollo Pro */
     { "[VIA Apollo Pro] PC Partner APAS3",	"apas3",		MACHINE_TYPE_SOCKET370,		CPU_PKG_SOCKET370, 0, 66666667, 100000000, 1800, 3500, 3.0, 8.0,						MACHINE_AGP | MACHINE_BUS_PS2 | MACHINE_IDE_DUAL,	  			  8,  768,   8, 255,            machine_at_apas3_init, NULL			},
-    { "[VIA Apollo Pro133A] AEWIN WCF-681",	"wcf681",		MACHINE_TYPE_SOCKET370,		CPU_PKG_SOCKET370, 0, 66666667, 133333333, 1800, 3500, 0, 0,							MACHINE_AGP | MACHINE_BUS_PS2 | MACHINE_IDE_DUAL,	  			  8,  768,   8, 255,           machine_at_wcf681_init, NULL			},
-    { "[VIA Apollo Pro133A] Acorp 6VIA85X",	"6via85x",		MACHINE_TYPE_SOCKET370,		CPU_PKG_SOCKET370, 0, 66666667, 133333333, 1800, 3500, MACHINE_MULTIPLIER_FIXED,				MACHINE_AGP | MACHINE_BUS_PS2 | MACHINE_IDE_DUAL,	  			  8,  768,   8, 255,          machine_at_6via85x_init, NULL			},
-    { "[VIA Apollo Pro133A] ECS P6BAP",		"p6bap",		MACHINE_TYPE_SOCKET370,		CPU_PKG_SOCKET370, 0, 66666667, 150000000, 1800, 3500, 2.0, 8.0,						MACHINE_AGP | MACHINE_BUS_PS2 | MACHINE_IDE_DUAL,	  			  8,  768,   8, 255,            machine_at_p6bap_init, NULL			},
-    { "[VIA Apollo ProMedia] Jetway 603TCF",	"603tcf",		MACHINE_TYPE_SOCKET370,		CPU_PKG_SOCKET370, 0, 66666667, 150000000, 1800, 3500, 2.0, 8.0,						MACHINE_AGP | MACHINE_BUS_PS2 | MACHINE_IDE_DUAL,	  			  8,  512,   8, 255,           machine_at_603tcf_init, NULL			},
+    { "[VIA Apollo Pro133A] AEWIN WCF-681",	"wcf681",		MACHINE_TYPE_SOCKET370,		CPU_PKG_SOCKET370, 0, 66666667, 133333333, 1800, 3500, 0, 0,							MACHINE_AGP | MACHINE_BUS_PS2 | MACHINE_IDE_DUAL,	  			  8, 1024,   8, 255,           machine_at_wcf681_init, NULL			},
+    { "[VIA Apollo Pro133A] Acorp 6VIA85X",	"6via85x",		MACHINE_TYPE_SOCKET370,		CPU_PKG_SOCKET370, 0, 66666667, 133333333, 1800, 3500, MACHINE_MULTIPLIER_FIXED,				MACHINE_AGP | MACHINE_BUS_PS2 | MACHINE_IDE_DUAL,	  			  8, 1536,   8, 255,          machine_at_6via85x_init, NULL			},
+    { "[VIA Apollo Pro133A] ECS P6BAP",		"p6bap",		MACHINE_TYPE_SOCKET370,		CPU_PKG_SOCKET370, 0, 66666667, 150000000, 1800, 3500, 2.0, 8.0,						MACHINE_AGP | MACHINE_BUS_PS2 | MACHINE_IDE_DUAL,	  			  8, 1536,   8, 255,            machine_at_p6bap_init, NULL			},
+    { "[VIA Apollo ProMedia] Jetway 603TCF",	"603tcf",		MACHINE_TYPE_SOCKET370,		CPU_PKG_SOCKET370, 0, 66666667, 150000000, 1800, 3500, 2.0, 8.0,						MACHINE_AGP | MACHINE_BUS_PS2 | MACHINE_IDE_DUAL,	  			  8, 1024,   8, 255,           machine_at_603tcf_init, NULL			},
 
     /* Miscellaneous/Fake/Hypervisor machines */
     { "[i440BX] Microsoft Virtual PC 2007",	"vpc2007",		MACHINE_TYPE_MISC,		CPU_PKG_SLOT1, CPU_PENTIUM2 | CPU_CYRIX3S, 0, 0, 0, 0, 0, 0,							MACHINE_AGP | MACHINE_BUS_PS2 | MACHINE_IDE_DUAL,		  		  8, 1024,   8, 255,	      machine_at_vpc2007_init, NULL			},