Dual Channel and S754

SouthernMunk · 21st March 2005, 8:41 PM

How do I know if a board supports Dual Channel? Because the memory controller is on the a64 chip, does that mean that all A64 mobos (inc S754 based) will support dual channel? If so, and I use a Sempron in a S754 board, will Dual Channel still work?

dukkie · 21st March 2005, 8:46 PM

Quote:

Originally Posted by SouthernMunk

How do I know if a board supports Dual Channel? Because the memory controller is on the a64 chip, does that mean that all A64 mobos (inc S754 based) will support dual channel? If so, and I use a Sempron in a S754 board, will Dual Channel still work?

socket754 is only single channel capable...

where as socket939 is dual channel...

SouthernMunk · 21st March 2005, 8:54 PM

Quote:

Originally Posted by dukkie

socket754 is only single channel capable...

where as socket939 is dual channel...

And how much performance increase is Dual Channel over Single?

dukkie · 21st March 2005, 9:10 PM

Quote:

Originally Posted by SouthernMunk

And how much performance increase is Dual Channel over Single?

there is around 1-5% increase using dual channel... the other main this is that it supports the upcoming Dual core processors (s939)...

Varuna · 21st March 2005, 9:19 PM

Only the FX series. The mainstream (read: sensibly priced) dual core processors are going to come out in socket M2.

FearTec · 21st March 2005, 9:34 PM

> much performance increase is Dual Channel over Single?

Twice as fast in synthetic memory benchmarks and 1-10% in games of today, maybe twice as fast in games of the future.

|jay| · 21st March 2005, 10:19 PM

Quote:

Originally Posted by Mojo-X

754 doesn't support Dual Channel. 754 does however have a 200MHz advantage over it's 939 counterparts which is better for performance than Dual Channel.

and dont forget some 754's have the 1mb cahce.. only the fx has the 1mb cahce om the amd s939 (i think)

Deja Vu · 21st March 2005, 10:49 PM

Quote:

Originally Posted by |jay|

and dont forget some 754's have the 1mb cahce.. only the fx has the 1mb cahce om the amd s939 (i think)

So does the 4000+ i think you will find.

SLATYE · 21st March 2005, 10:58 PM

Quote:

Originally Posted by |jay|

and dont forget some 754's have the 1mb cahce.. only the fx has the 1mb cahce om the amd s939 (i think)

Of the current A64 S754s (now only the 2800+, 3000+, 3200+) none have 1MB cache any more. I think that the 3700+ did, but it and the 3400+ have been removed from AMD's product line. The lowest-end Semprons have just 128KB L2 cache.

On S939, all the new CPUs have 1MB cache (each CPU starts with 1MB cache, then gets moved to 512KB cache with a 200Mhz core speed increase to compensate. That allows AMD to release a new CPU quite early, then save money as yields on the higher-speed parts increases). All the FXs have 1MB cache.

21st March 2005, 8:41 PM	#1
SouthernMunk Member Join Date: Dec 2002 Posts: 669	Dual Channel and S754 How do I know if a board supports Dual Channel? Because the memory controller is on the a64 chip, does that mean that all A64 mobos (inc S754 based) will support dual channel? If so, and I use a Sempron in a S754 board, will Dual Channel still work? __________________ Grammar Joke: Q: What do you call Santa's helpers? A: Subordinate Clauses System: Foxconn NF4UK8AA-8EKRS \| AMD Athlon 64 3000+ \| 2x256MB DDR400 Corsair RAM \| Xpertvision 6600GT (PCIe) \| Antec SLK2650BQE \| Samsung TS-H552U \| Samsung 80GB SATA

21st March 2005, 9:19 PM	#5
Varuna Member Join Date: Sep 2004 Location: Sydneys Northern Beaches. Posts: 1,050	Only the FX series. The mainstream (read: sensibly priced) dual core processors are going to come out in socket M2. __________________ If all else fails, immortality can always be assured by spectacular error. Last edited by Varuna; 21st March 2005 at 9:22 PM.

21st March 2005, 9:34 PM	#6
FearTec Member Join Date: Jul 2003 Location: NSW Posts: 2,337	> much performance increase is Dual Channel over Single? Twice as fast in synthetic memory benchmarks and 1-10% in games of today, maybe twice as fast in games of the future. __________________ Seen my Stolen Items: Canon 350D (S:0710C007[AB]), Dell D820 (S:6WJKL1S), iPod (engraved: simon.fearby.com)