Can I mix RAM of different frequencies?

ngrome · 02-26-2009, 07:00 AM

Let's say they are all DDR2, 240-pin configuration, can I intermix 667 Mhz with 553, 667 with 800, 553 with 800, and so forth? I thought I read somewhere that it would clock at the one with the lowest frequency, but need confirmation on this. Thanks!

Tumbleweed36 · 02-26-2009, 07:40 AM

That is exactly what will happen if it works. Some ram pieces will not work unless you have an exact match (brand name and type or ram) in the other slot. Some motherboards are very picky. However, the majority of times, it will just default to the slowest stick of ram. Good luck and let us know how it goes.

02-26-2009, 07:00 AM	#1 (permalink)
ngrome Registered User Join Date: Feb 2009 Posts: 130 OS: XP SP2	Can I mix RAM of different frequencies? Let's say they are all DDR2, 240-pin configuration, can I intermix 667 Mhz with 553, 667 with 800, 553 with 800, and so forth? I thought I read somewhere that it would clock at the one with the lowest frequency, but need confirmation on this. Thanks!

02-26-2009, 07:40 AM	#2 (permalink)
Tumbleweed36 Asst Manager Hardware Join Date: May 2005 Location: USA Posts: 19,650 OS: XP Professional	Re: Can I mix RAM of different frequencies? That is exactly what will happen if it works. Some ram pieces will not work unless you have an exact match (brand name and type or ram) in the other slot. Some motherboards are very picky. However, the majority of times, it will just default to the slowest stick of ram. Good luck and let us know how it goes. __________________ ---------- I don't receive email notifications of replies to subscribed threads. (Internet provider policy) Therefore, if I don't respond to your post within 24 hours, please send me a reminder PM and include the link to your thread.