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RDRAM PC1066 Faster than the current best DDR?

4

4fingerwu1

Senior member
Well my brother has a computer from about 2 years ago -
He needs a RAM upgrade
Turns out he has RDRAM PC1066
Now if I am not mistaken this will give him a memory bandwidth or 4.2ghz -
Isnt this at or above the current best DDR performance today?
What am I missing here?
 
Memory bandwidth is measured in GB/s and the lastest ddr is approx 4.3GB/s BUT its DDR (double data rate) so the bandwidth is 8.6GB/s effective.
 
Originally posted by: 4fingerwu1
Another question
There are two sticks of 128 in the computer right now -
Can I add another 256mb stick?
Click to expand...
16-bit RDRAM modules have to be installed in pairs, so you would need a pair of additional modules or nothing's going to happen. I know RDRAM is curiously fast in some file-compression tasks compared to dual-channel PC3200. But if it were me, I would think long and hard before putting any money into an RDRAM upgrade unless you can score it for cheap on the used market.
 
You're missing the fact that all of the high-end motherboards nowadays run DDR in dual channel mode, doubling the bandwidth to anywhere from 6.4GB/s for dual channel PC 3200 all the way up to 8.4GB/s for dual channel DDR2 in a new Intel board, which pretty much blows the doors off of PC1066 RDRAM.

Also RDRAM needs to be installed in pairs, so you'd need two 128MB modules to get a 256MB upgrade. And unless you get it used, RDRAM is gonna cost you. It almost makes DDR2 look cheap by comparison.
 
Originally posted by: 4fingerwu1
Another question
There are two sticks of 128 in the computer right now -
Can I add another 256mb stick?
Click to expand...
For most P4 motherboards RDRAM must be added in pairs, but check your motherboard manual.

It's about double the price of PC3200 DDR because it's obsolete (no modern PC motherboards use RDRAM). You might consider used on eBay, or just moving up to a new A64 cpu and motherboard.
 
As others have said it will have to be installed in pairs. RDRAM was a good technoligy, but the company that makes it was too greedy, so it didn't really make it to mainstream, and is still rediculously overpriced. You are likely much better off selling the motherboard and memory on e-bay, and getting a ddr motherboard and memory. Oddly enough rdram seems to sell frequently on e-bay.
 
Originally posted by: stevty2889
As others have said it will have to be installed in pairs. RDRAM was a good technoligy, but the company that makes it was too greedy, so it didn't really make it to mainstream, and is still rediculously overpriced. You are likely much better off selling the motherboard and memory on e-bay, and getting a ddr motherboard and memory. Oddly enough rdram seems to sell frequently on e-bay.
Click to expand...

I'm currently using a system I built almost four years ago that has a 2.0 GHz P4 400MHz FSB with an Asus P4T-E mobo and a gig of RDRAM. It also has a GForce 4 Ti 4600 GPU. This thing used to be the top of the heap! I now just use it to access the net and post here in the forums and play Hexic (love that game).

It's good to know that if my mem goes south, ebay will be my rescue. But if my mobo eats itself (sp), I'm looking at burying the mobo and dumping the RAM on ebay. D'OH!!
 
What about that new RAM being developed by Rambus? XDR DRAM. Is that stuff going to be faster than DDR2?
 
XDR DRAM looks to have a lot of potential, but considering the company, and the unreasonable prices of RDRAM, they will likely have a hard time getting XDR to the computer mainstream.
 
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