内存标称参数跟实际运行参数（包括频率和小参）不是一回事，前者写在SPD里面，后者由bios决定

http://www.intel.com/design/chipsets/91 ... on915p.htm
翻了一下915的datasheet和白皮书，没看到说不同容量就不能双通道的，倒是在白皮书里找到下面这段话

New to the 915G/915GV/910GL Express chipset GMCH is support of interleaved mode. This mode provides maximum performance on real applications. Addresses are ping-ponged between the channels, and the switch happens after each cache line (64-byte boundary). If two consecutive cache lines are requested, both may be retrieved simultaneously, since they are guaranteed to be on opposite channels. To achieve interleaved mode, both channels of memory must be populated with equal memory capacity, but the technology and device width may vary from one channel to the other.

不知是不是有人把interleaved mode翻译成双通道了。你的结论是从哪儿看到的，能给个出处吗？

ps：datasheet里面关于内存控制器的介绍：

 The (G)MCH System Memory Controller directly supports one or two channels of memory (each channel consisting of 64 data lines).  

Supports two memory addressing organization options:    The memory channels are asymmetric: "Stacked" channels are assigned addresses  serially. Channel B addresses are assigned after all Channel A addresses.    The memory channels are interleaved: Addresses are ping-ponged between the channels
after each cache line (64-B boundary).

ms你看了这篇文章
http://www.ocer.net/article/a_show.php?id=7084
先纠正一个明显误导的地方，NF2之所以内存性能提升不够大是因为K7的FSB太低了，而非内存控制器不行，也正是这个原因，VIA迟迟没有推出K7上的双通道板子

哈哈，我现在用着也不慢，我想我还是等等吧
谢谢大家了。