SiSsoft memory scores are higher at 100/100 than 100/133 on my ECS K7S5A.

[HamHam]

that is Whack!

Why is this? Shouldnt it be faster at 100/133?

thx

 

[HamHam]

With 100/133
416
552

With 100/100
469
556

 

[ElFenix]

not really, since you're still constrained by the 100 and in order to get 100/133 you introduce wait states to match up the buses

 

[DoctorBooze]

I'm afraid so... there's stuff about it in the motherboards forum, it was mentioned in the news area a couple of days ago, there's a full explanation on xbitlabs. Apparently the SiS735 is rather poor at running the CPU and memory asynchronously (as it has to for 100/133), introducing wait states. The SiS745 currently has the same problem doing 133/166 which is what it has to do to support DDR333 memory...

I have two K7S5A boards, but I get to run them at 133/133, so no problems for me (-8

 

[DoctorBooze]

ElFenix, VIA managed to avoid the problem on the KT133 and KT266, so SiS should have too.