Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Forum Jump  
Memory upgrade question
Last post Wed, May 09 2007 by DG, 4 replies.
Options
Go to last post
Posted on Tue, May 08 2007 21:18
by alanb
Joined on Sat, Feb 04 2006, Posts 68
Suppose a computer currently has four memory slots, each with a 512MB memory module in it.

New memory for this computer is $129/GB, and it only comes in 1GB modules.

There are two possible options:

(i) buy 2GB of new memory, stick 1GB modules in slots 1 and 2, and keep the original 512MB modules in slots 3 and 4. End result = 3GB installed, and 2x512MB modules sitting in a box in the closet somewhere... Cost = $258.

(ii) buy 1GB of new memory, stick it in slot 1, and keep the original 512MB modules in slots 2, 3 and 4. End result = 2.5GB installed, and 1x512MB module sitting in that box in the closet... Cost = $129.

I seem to remember that it is recommended (?) to only keep equally-sized pairs of memory modules in paired slots... is this correct?

What, if any, are the disadvantages of a setup like option (ii) above?

A little extra memory would be nice, but this computer's CPU seems to get overloaded long before the RAM runs out... so it's not at all clear that the extra $129 is worth it... since it will only buy half a GB of more memory... that is, of course, unless there are problems with pairing different-sized memory modules that would make it necessary to buy a new pair of same-sized modules in any case.

Any advice/suggestions would be greatly appreciated!!

.
-- alanb
Posted on Tue, May 08 2007 22:40
by Nick Batzdorf
Joined on Tue, Apr 29 2003, Los Angeles, Posts 2543
The conventional wisdom is that PCs like to have matched RAM, or at least that's been the much-repeated wisdom about the motherboards that have been around the past few years.

However, in your situation I'd be tempted to start with one 1GB stick and see how it works. If it doesn't, add a second.

That assumes your motherboard works properly without pairs.
Mac Pro 5,1 12-core 3.46 GHz, 64MB RAM, latest macOS available. Metric Halo 2882 interface.

VisionDAW Windows 7 Pro i7 950 3.07 4-core, 24GB RAM. Has an RME Hammerfall HDSP9632, but I just use VE Pro. Also several ancient P4 XP slaves, rarely used.
Posted on Wed, May 09 2007 10:55
by cm
Joined on Fri, Dec 20 2002, vienna, Posts 9062
i'd like to add that _all_ computers like to have matched RAM, even those before dual channel memory became common Wink
i'd have a look into the manual of your motherboard to see which type of memory is supported by your chipset (speed, layout, size, dual channel or not) and make my decision based on this information.
if you are mixing RAM at least try to get sticks with the same or a very similar timing to avoid unexpected side-effects.
christian
and remember: a CRAY is the only computer that runs an endless loop in just four hours ...
Posted on Wed, May 09 2007 10:57
by DG
Joined on Wed, May 12 2004, Posts 8608
cm wrote:
i'd like to add that _all_ computers like to have matched RAM, even those before dual channel memory became common Wink
i'd have a look into the manual of your motherboard to see which type of memory is supported by your chipset (speed, layout, size, dual channel or not) and make my decision based on this information.
if you are mixing RAM at least try to get sticks with the same or a very similar timing to avoid unexpected side-effects.
christian

I would suggest using the Crucial memory application as that will probably be able to tell you exactly what memory you can install.

DG
Nuendo 6.03, 4.3
2 x Intel Xeon x5675 3.07GHz Hex Core
48GB RAM
Windows 7 (x64)Pro
RME Multiface II
Intensity
ATI HD5400 series graphics card
You cannot post new threads in this forum.
You cannot reply to threads in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.