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Corsair or Samsung PC800 RDRAM ???

C

cocacola155

Junior Member
Ill be getting the Abit TH7 II with a NW 2.0A and need to choose on RDRAM..

I heard samsung was excellent but Newegg's best is Corsair, so should I get thye Corsair RDRAM ?? Will it allow for around 133 FSB for my CPU?
 
That I'm not sure of to tell you the truth. Most people get the Samsung to o/c, myself included. But Corsair has always made quality ram so I don't see why not.
 
I agree with Midnight. You want not just the Samsung modules, but the Samsung PCB.

Also be sure to get the lower-density, double-sided Samsung RDRAM. It can be had for a few bucks more than the single-sided RIMMs at googlegear.com.
 
I got 512MB of the Corsair stuff from Newegg (256x2) to go on my TH7II-RAID. Corsair has Samsung chips, but I have only been able to get it to 515 stable. I still have some tweaks to do, but if I could do it again, I would have gotten pure Samsung. I rushed into it and just figured Corsair had a great reputation. All this said, it really is a crapshoot anyway.

From what I hear, 256MB (2x128) in the first 2 slots with crimms in the other 2, will overclock better than 512MB. The great thing about the TH7II is that you can always turn the RAM down to 3X. I am at 20x133 right now with the ram running at spec 400.
 
I looked on googlegear.com and they had Samsung "original" with 4 devices, 8 devices, 16 devices, and one without a device listing. I don't see a "certified" or "generic" version anywhere. What do the "devices" represent anyway?
 
imgod,

For the Samsung 256Mb modules, you want the ones with 8 devices (or as many as you can get without ECC). They are the double-sided modules. The four device modules are single-sided, and generally don't overclock as well.

If you have these modules, and can't hit 533MHz memory, it's 99% likely that your motherboard and its clock generators are the problem, not the memory.
 
Yes I agree with KenAF, my 256 modules are single sided and I'm not able to do 4X/Turbo @ 133 fsb. Although at 3X they work just fine. I will try to get some double sided modules when I can. From Samsung of course.
 
I ordered the 8device Samsung Rimm from googlegear and it came in as single sided module. I haven't tested its ability to run @ 133 yet.
 
I ordered the 16 device Samsung Rimms from Googlegear and am currently running at 18x133.
I didn't think there are any "generic" RDRAM manufacturers out there? I was under the impression that only the big names were actually making them, ie Samsung, Kingston, NEC, Corsair. I do see some Syncmaxx branded chips out there so maybe the hong kong fooey guys are into the RDRAM segment?

The 16 device Samsungs from Googlegear seem to be winners.
 
I'm assuming the "devices" are physical modules that are on the stick of RAM. Gotcha. Any idea if the 16 "device" ones are capable of reaching 1200MHz?
 
devices=chips
How are you arriving at 1200mhz? I figure 100x4=400mhz and 133x4=533mhz, I assume by 1200mhz you are referring to 150mhz fsb?
I haven't seen anyone getting 150 fsb out of RDRAM but I'm sure there is someone out there.
 
Yes, I mean 150. I figure that's the most flexible solution currently, to use a 2.0 GHz 100MHz FSB P4 Northwood and watercool it to 3 GHz. If the memory is not able to make 600MHz DDR (the RDRAM that is), then I can turn on the 3/4 memory multiplier and have it run at 450 MHz DDR and still get a nice memory speed boost over normal PC800 RDRAM. And when newer memory comes out, I can just swap memory without need to swap motherboards or the processor and get a nice improvement in speed. Has anyone had any luck seeing if these "16 device" sticks are capable of that high speed? Also, would memory cooling (RDRAM already has a heatspreading, I'm thinking maybe a fan for it), help?
 
The TH7II has a 3x memory multiplier also which I didn't take into account before, so I would imagine with the 3x mult 150+ FSB is entirely possible.
 
Actually 16-device means double-sided (I think it means 8 devices per side).

So Yelf, how high have you gotten? Will those sticks do higher than 133?
 
Yes 16 device rimms would be double sided but, it boils down to a device being a chip for explanation sake.

I tried taking my 1.8 up to 140 last night with the 4x multiplier and got some data corruption, I'm not going to the 3x multiplier, 133 is fine with me.

 
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