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What type of RAM do I need for P4 on 533 MHz bus?

V

VBboy

Diamond Member
I haven't been following Intel's progress lately, and now they have a 533 MHz bus for their P4 2.26 GHz and higher. I think I will get that 2.26 GHz.

But what type of RAM does it need in order to run at 533 MHz bus? Rambus PC1066? Or some other RAM which will need to be overclocked for the 533 MHz bus? E.g. with the 645 DX chipset, which supports DDR RAM, will I be able to get the 533 MHz bus?

Thanks in advance!
 
Yeah, any kind of memory. But if you are willing to spend that much on the CPU, I'd get RDRAM if I were you. Samsung RDRAM overclocks nicely from what I've heard but there are also some PC 1066 available though they cost much... If you want the best performance, get RAMBUS, if you already have DDR or are not willing to spend that much on a motherboard supporting RDRAM, get DDR. Unless there is no more RDRAM or DDR memory do NOT buy SDRAM. It will negate the effect of buying that fast of a processor.

1) RDRAM
2) DDR
...) SDRAM
 
in a week or so Mushkin and Samsung are launching PC1066 modules that will be reasonably priced, and i can tell you from experiance that some of the official samsung pc800 chips DONT overclock to 1066, i have a pair of 128s here that wont go any higher than PC920 (115x4) just FYI
 
What happens when dual channel DDR boards start appearing at the end of the year? I say get a board with the same memory now and when they arrive you're set for dual-channel goodness: more bandwidth than RDRAM and less latency to boot! You saw that right, two PC2700 DIMMS=5.4GB/s bandwidth.
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All of that bandwidth will be pointless if the Pentium 4 doesn't have a 166MHz quad-pumped FSB.
 
Dual channel DDR will be pretty much usless with current P4's just like DDR333 is pretty much usless with current Athlons.
 
All of that bandwidth will be pointless if the Pentium 4 doesn't have a 166MHz quad-pumped FSB.

Huh? People are already getting insane overclocks with current DDR boards that support 533Mhz P4's. I doubt Intel would introduce a dual-channel DDR board with a 133Mhz FSB. Even if they don't, you can overclock to 166Mhz or over.



Dual channel DDR will be pretty much usless with current P4's just like DDR333 is pretty much usless with current Athlons.

Hardly. Unlike the current Athlons which only support a bandwidth of 2.1GB/s, the current P4's with 533Mhz FSB can utilize up to 4.2GB/s of system bandwidth. A dual-channel DDR333 solution will provide more bandwidth than the fastest RDRAM and have less latency due to its parallel nature.
 
What your overlooking is current P4's can't use all that bandwidth. P4's max at 4.2GBps so what good is 5.4GBps without a upping of the fsb and I don't see Intel doing that anytime soon.
 
All of that bandwidth will be pointless if the Pentium 4 doesn't have a 166MHz quad-pumped FSB.
Click to expand...
Exactley, while it will likely cost at least an arm in addition to the "high cost" (sarcasm) of RDRAM and the 850e. I am all for Dual Channel DDR but I feel that its cost and performance benefit won't be worth it.

As for what ram to use for the 533fsb? I'd still lean towards 850e and some Samsung PC800 and try to hit PC1066 speeds.😛
 
What your overlooking is current P4's can't use all that bandwidth. P4's max at 4.2GBps so what good is 5.4GBps without a upping of the fsb and I don't see Intel doing that anytime soon.


My point wasn't so much that dual-channel offers more bandwidth, rather that it offers as much or more bandwidth than even the fastest RDRAM and does so with less latency.
 
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