RDRam buss speed

  • Thread starter Thread starter Robert Askins
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Robert Askins

Can anyone tell me what sets the speed of RDRam? I have a machine that boots
saying 300Mhz with 128 Meg installed. Would like to go to 512 or 1024. Don't
really care if I have to trash the old mem. Machine is an HP Pavilion 9795c
cannot find motherboard specs on HP site other than it is an asus. Strange
since I've been able to find it on all the other HP's I have(went looking
just to see). Want to use machine for burning DVD's of video from MiniDV
Camcorder. No real editing needed just want to dump tape to HD and then burn
it.

Thanks in adv.
 
Robert Askins said:
Can anyone tell me what sets the speed of RDRam? I have a machine that boots
saying 300Mhz with 128 Meg installed. Would like to go to 512 or 1024. Don't
really care if I have to trash the old mem. Machine is an HP Pavilion 9795c
cannot find motherboard specs on HP site other than it is an asus. Strange
since I've been able to find it on all the other HP's I have(went looking
just to see). Want to use machine for burning DVD's of video from MiniDV
Camcorder. No real editing needed just want to dump tape to HD and then burn
it.

Thanks in adv.
Click to expand...
The design/spec of the RDRAM itself will be one of the limiting factors -
most commonly its available in PC 800 form and either 45 or 40 nanosecond
speed but its also available in slower speeds (PC700, PC600 - I think one of
those ends with 11 not 00 and faster PC1066 at 32/35 nanosecond speed).
Another limiting factor will be motherboard design/chipset used (can find
out the maximum here from the motherboards manual) also CPU bus frequencies
play a role - eg certain slower types of RDRAM aren't compatible with either
100 MHz or 133 MHz bus (cant remember the exact details). Have a nosey at
Samsungs website for some good info on the stuff.

If you no-longer need your old 128 MB of RDRAM and its in fine working
order, my suggestion would definitely be to sell it on eBay and make....
quite alot of cash (prices are very high for this stuff as its now so
rare) - the downside is it will cost you big time to upgrade (to the point
where its often cheaper to buy a new motherboard with DDR RAM). Check out
the requirements for your board. Its a common myth that RDRAM must always be
installed in pairs - while its true that pairsof slots must be occupied,
some machines with accept something called a continuity RIMM (C-RIMM) in one
slot while the actual RIMM goes in another - the Asus P3C-E is like this.
The benifit with this is that you can likely pick up a bargain just buying a
single RIMM (usually they're sold in pairs at proportionally much higher
prices) and a C-RIMM (these are basically a terminator circuit board that
looks a bit like a RIMM with no chips on it).

Paul
 
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