What's better: dual-channel memory mode or a bit more RAM?

[Jordon Bedwell]

On 4/27/2011 2:37 PM, Adam Funk wrote:
> On 2011-04-27, compdoc wrote:
> 
>>> Will A or B give me better performance?
>>
>>
>> One thing to try is memtest86+. Test both A and B configurations, and memtest 
>> will tell you how fast the bandwidth to the ram is. You probably won't see a 
>> lot of difference.
>>
>> I've been reading that with quad cores, you want to run in unganged mode. 
>> (which turns off dual-channel mode) This allows the cpus to access the banks 
>> of ram independently. This is supposed to be faster.
> 
> I'll try the memtest86+.  How long does it take --- roughly, so I can
> plan it in --- minutes, hours, all day?

Depends on several factors (like board, chipset and memory speed) but
expect hours to day for a full test. Minutes for a short test.