To: Tenchusatsu who wrote (33535 ) 11/1/1999 10:17:00 PM From: Dan3 Read Replies (1) | Respond to of 93625
Re: look at the benchmarks again... Hi Tenchusatsu, In response to your comment >>good points in your post, but the HYPE that you mixed in... There is very little in the way of presentation of evenly weighed perspectives on this thread. I tried taking that tack a few times, and had the pro rambus aspects trumpeted back to me, with the other side totally ignored. So, when in rome... The whole presentation of rambus benchmarking info is highly hyped at all times. I've never seen any consideration of any parts except PC800/40 - and it's always compared to PC100 or CAS 3 PC133. My post was aimed at showing how rambus would look if the "rambus glasses" were turned to favor the alternatives. Pretty annoying, eh? PC600, the only speed you can get from IBM outside of pre-configured system, compared to PC133, equally available from IBM, outside of a pre-configured system, and costing about half as much. It actually isn't such an outlandish comparison. Would you focus on benchmarks between those two? Neither would I, it's not a meaningful comparison of the technologies. But that's all we ever seem to get from the rambus side - although Dell seemed to let a little info out at the IDF, I think it was accidental. And bringing up DDR - which won't be in computers until the end of this year or early next year. But I've read so, so many posts that view any suggestion that Rambus won't own the entire memory market by the end of next year as being beneath contempt. I think it's reasonable to present what will have to be rejected under such a scenario. When Anand benchmarked VC133, the numbers seem to indicate that he had set it at CAS 3, but the specs for VC133 call for a read latency equivalent of CAS 2 or, in a few cases, CAS 1:ic.nec.co.jp VC technology also drops one clock off the latency for many addressing modes. Regarding: No one said anything about latency getting any better w/ DDR-II. I'm not sure what you're getting at here. The key to the PC133 -> VC133 -> DDR -> DDR II upgrade path is that the bandwidth keeps going up while the latency either stays the same or gets better. The problem with rambus is that it improves bandwidth at the cost of latency. It works by collecting data from multiple cells, then bursting it down a bus to gain bandwidth - continuously, if called for. But that first step of collecting the data from multiple cells uses up crucial nanoseconds that aren't required by the other technologies. Regards, Dan