Incompatibility of PC4200 and PC5300 Notebook Memory

I though that PC5300 should be compatible with PC4200 anyway, while it turned out a big surprising "no".

Toshiba Laptop with 512M PC4200 (Samsung) - OEM
Added Kingston 1G PC4200 - no problem, 1.5G for half 1 yr

Buying KByte 1G PC5300 today, I thought to use both 1G PC4200 Kingston and 1G PC5300 KByte, but it is only recognized as 1G.

Following are what I experienced

1G PC5300 -> 1G
1G PC4200 + 1G PC5300 -> 1G
512M PC4200 + 1G PC5300 -> 1G

That's interesting.

所有跟帖： 

• 回复：Incompatibility of PC4200 and PC5300 Notebook Memory -nuxrl- ♂ (314 bytes) () 10/27/2007 postreply 20:04:51

• 你的笔记本用户手册有没有讲最多支持多大内存? -墨斗鱼- ♀ (0 bytes) () 10/27/2007 postreply 20:25:02

• 去bios手动配置内存timings，应该能用 -butdie- ♂ (55 bytes) () 10/28/2007 postreply 08:08:44

• 许多品牌机的BIOS极为简单，几乎没有什么可让用户调的。 -墨斗鱼- ♀ (105 bytes) () 10/28/2007 postreply 16:15:25

• 谢谢楼上各位的回复，汇报如下 - 回复：Incompatibility of PC4200 and PC5300 Noteboo -pjiang- ♀ (630 bytes) () 10/28/2007 postreply 11:44:21

• 896MB是典型32位系统限制 -butdie- ♂ (163 bytes) () 10/28/2007 postreply 13:09:43

• 既然是新买的内存条，可以直接询问K-Byte的技术支持部门。 -墨斗鱼- ♀ (44 bytes) () 10/28/2007 postreply 15:56:44

• very nice -nuxrl- ♂ (707 bytes) () 10/28/2007 postreply 16:09:05

• 再谢楼上各位的回复 - 回复：Incompatibility of PC4200 and PC5300 Notebook Mem -pjiang- ♀ (2037 bytes) () 10/28/2007 postreply 19:20:13

• 你到东芝网站看看笔记本有没有新的BIOS， -墨斗鱼- ♀ (42 bytes) () 10/28/2007 postreply 19:31:25