We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you a podcast all about Citrix Workspace, moving to the cloud, and analytics & intelligence. Episode 2 coming soon!Listen Now

x

ASUS MthrBrd A7S333 DDR333 DIM questions?

raymm
raymm asked
on
Medium Priority
1,119 Views
Last Modified: 2007-12-19
MB manual says use only listed DDR333 DIMM Qualified Vendor list.  MB uses only "DDR SDRAM DIMMs".  "Only 2 DIMS will support 333MHz-PC2700."  If more, reverts to 266MHz.  Largest size on DDR333 DIMM Qualified Vendor list is 256MB.  "Max 2GB PC2700"

I want a gig or more of memory.  

1.  Moving from 512MB of memory to 1 GB+ of memory will result in faster performance when I am running a lot of programs at once?
2.  Will I see worthwhile speed increase by using DDR333 DIMM rather than non-DDR333?
3.  Can I have 1 gig of PC2100 DIMM in one socket and 2 * 256MB DDR333 Qualified Vendor DIMM in other two sockets and get still get 333MHz from the 2 * 256MB DDR333 Qualified Vendor DIMM?
Comment
Watch Question

Retired
CERTIFIED EXPERT
Most Valuable Expert 2013
Top Expert 2009
Commented:
(1)  Yes.   There will be a nice performance increase if you run multiple programs when you go from 512M to 1GB.   There's much less difference when you go beyond that.

(2)  If possible I would stay with DDR333 -- the faster memory accesses definitely improve your performance.  It's not a direct computation (cache influences the actual difference you'll see), but basically DDR333 vs DDR266 is simply 333/266 = 25% faster memory bandwidth.

(3)  NO!!   If you mix speeds, all the memory will operate at the lowest speed.   Further, the motherboard's design clearly reduces the interface speed to at-most 266MHz if you install more than 2 DIMMs.

You do NOT have to use memory from their qualified memory list.   Go to Crucial's memory selector (www.crucial.com) and look up your motherboard ==> they sell both 512MB and 1GB DDR333 modules for your motherboard.   You could use two of those and the board will run at DDR333 speeds and let you have either 1GB or 2GB of memory.

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts

Author

Commented:
>reduces the interface speed to at-most 266MHz if you install more than 2 DIMMs.
Quote from manual:  "Three sockets are available for both 266MHz-PC2100 or 200 MHZ PC1600 DDR DIMMs to form a memory size of 64MB to 3GB.  Only 2 DIMMs will support 333MHz-PC2700; if more than 2 333MHz DIMMs are installed, the system auto reverts to max speed of 266MHz."

When I read above, I don't see prohibition on mixing speeds.  Am I reading too literally?  Is it your experience that mixing speeds will result in lower speed?

Author

Commented:
Crucial includes PC3200 in recommends, but ASUS MthrBrd A7S333 manual only refers to max PC2700.

1.  Will PC3200 work on ASUS MthrBrd A7S333?
2.  Will PC3200 provide added speed?

Author

Commented:
Gary CaseRetired
CERTIFIED EXPERT
Most Valuable Expert 2013
Top Expert 2009

Commented:
Yes, mixing speeds will result in the memory bus working at the speed of the slowest module.

The PC3200 modules will work, but won't provide any added benefit => they'll simply work at the DDR333 speed.
Gary CaseRetired
CERTIFIED EXPERT
Most Valuable Expert 2013
Top Expert 2009

Commented:
No PC2100 is not better than PC3200.   Memory prices vary a lot based on supply and demand -- faster modules are not always more expensive.

Author

Commented:
PC3200 is faster/better than PC2100?

Author

Commented:
Sorry, meant to say PC2700 is faster/better than PC2100?
Gary CaseRetired
CERTIFIED EXPERT
Most Valuable Expert 2013
Top Expert 2009

Commented:
Yes, PC2700 is faster than PC2100.   Not "better" -- they're both just memory; and as long as it's reliable the speed doesn't make it "better" => just faster :-)
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.