Anyone tested Single-Channel vs. Dual-Channel perf. on a Conroe setup?

[Ketchup]

I am itching to get a new Conroe system, but DDR2 prices are making me think twice about it. Would there be much of a performance drop if I were to run a Conroe with a single 1-gig stick (so I can add another down the road)?

Thanks for any input.

 

[BladeVenom]

I think AnandTech has done it. I think it averages about a 2% to 3% performance penalty.

 

[Duvie]

I didn't write the numbers down but in most of the things I used it was on the low end of 2% or less.....The C2D chips are not very bandwidth limited...

 

[n7]

I ran a single 1 GB for a while till i got my Xtreem kit, & really, aside from benching, the difference is very minimal

 

[Raider1284]

The strap is the more important thing to worry about. When running my 5300 ram modules at 401(802) FSB I would get around 4700GB/s. When I lowered the FSB to 400, to avoid the strap my bandwidth jumped to 6700GB/s!! Sorry if this is kinda off topic, but a 2 gig increase in bandwidth is too sweet to not talk about 😉

 

[Cheex]

What is the penalty for using 1x1GB (S. Channel) vs 2x512MB (D. Channel) on a Pentium D setup?

 

[myocardia]

I believe it's quite a bit more of a performance drop. But, then again, my memory is absolutely horrible.

 

[Duvie]

At 3.2ghz and 7x466 for 933ddr2 (cl 5-5-5-15)...

I get 6488 with single channel and 7600 with dual channel...

I use to get a bigger jump from single to dual on my A64 andwe all know how worthwhile those perforance increase were in the real world....Almost nill...5% or less on the A64's...The hit to running 2t was almost as worse...

Edit:

Here is some real world for you:


Cinbench 9.5 multicpu------------993---------------996----------0.3%
Dvdshrink 3.2---------------------11:02-------------11:18--------2.4%
TMPGenc 2.52---------------------1:25--------------1:22----------3.6%

 

[Ketchup]

Thanks for all the input guys. I guess I am all out of excuses not to upgrade. It will be so nice to finally be rid of the nForce 3/ nVidia 6800 issue.