G
Guest
Guest
Alright so whats the deal with these two types of RAM??? I mean which one is better Im considering upgrading to a new comp soon and any input on this would be nice.
Could you give me a link? - I'm really interested on that info. TIAI will avoid the issue of your latency comparisons, which are actually incorrect. I've covered that in detail in prior posts.
If one forgets the single channel i820 (some mobos still have them)...Current RDRAM system implementations all use a dual-channel memory subsystem
Actually thats not all - if you want to include AGP and PCI (or even USB) devices the number of memory channels will be quite superior - most devices have memory, such as HDDs, CDRs and even NICs.plus the channel [implemented as an AGP bus] to the memory on the video card (thus three actual memory channels for the total system.)
BTW AFAIK programmers can't change the way memory is placed along the RAM modules - that is the job of the memory controller.
not on my board SIS 735No, all these devices go through the 133MB/sec PCI bus.
Yup true. But again misleading. Is bandwith the only thing that affects performance? Hardly! On paper the nforce's memory controller is even more advanced then the I850's. Bandwith of 2.1 gig to the CPU is correct however. But with a hardware prefect and reduced latencys will/should bring quite a bit of a performance increase to the table.I do. I've responded to a post (possibly one of yours?) in another thread over here. The nForce will offer the same 2.1GB/sec of bandwidth to the CPU that other PC2100 DDR motherboards do.
please explain to me where the difference lie between the nforce's memory controller and the I850's. It is my understanding the the I850 is not in itself a true dual channel memory chipset either as the p4 still only uses a 64 bit path from the cpu to the memory controller itself. The only difference being that the bus is 100 mhz quad pumped resulting in a cpu to memory contoller bandwith of 3.2 gigabytes where as the athlon uses the same 64 bit path at 133 double pumped resulting in a cpu to memory bandwith of 2.1 gigabytes. So, if my understanding of this is correct neither the I850 or the nforce is a true dual channel memory system like the alpha's bus which uses a 128 bit memory to cpu path.Current RDRAM system implementations all use a dual-channel memory subsystem, plus the channel [implemented as an AGP bus] to the memory on the video card (thus three actual memory channels for the total system.)