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guklein

macrumors 6502a
Original poster
Oct 8, 2008
591
0
What is a better memory for my iMac? I want to put 4GB (2x2).

Crucial, Corsair or Kingston?

Thank you.
 
Does it even make any difference? Go by the manufacturer specs. All three of those are reputable companies.
 
Thats it I would like to know...if it makes any difference and if they are reputable.

Another suggestion?

Thank you.
 
I don't think it makes much difference if you get the right specs. I have even used the Kingston 'value' ram without problems. I like buying from OWC because it makes it easier returning bad ram if you have to.
 
The iMac 20'' 2.66GHz (before the new one) is DDR2-667Mhz or DDR2-800Mhz?

A friend told me it is better to put a 667Mhz than a 800Mhz! Why?
 
Crucial = Micron which is an OEM supplier to Apple. For years now I've used their generic RAM in my Macs w/ no issues. They also have Mac specific RAM, but it's always a few $ more and it's the same as the generic down to the CAS rating.

Kingston. They used to be the best back in the 90's. Their specific RAM for Macs is great, but way overpriced. I use to use their ValueRAM but every now and then I'd get bad sticks, or at least sticks that were not up to Apple's standards so I stopped using them.

Corsair. Never used them. Supposedly they are good, but Crucial works so why take a risk.
 
The iMac 20'' 2.66GHz (before the new one) is DDR2-667Mhz or DDR2-800Mhz?

A friend told me it is better to put a 667Mhz than a 800Mhz! Why?


You want to match the RAM speed w/ the bus speed. Using 800Mhz RAM isn't going to be faster in a 667Mhz machine. If you are lucky it will downclock to 667Mhz. At worst your Mac will spit it back at you and you'll have to go through the hassle of getting the right RAM.
 
The iMac 20'' 2.66GHz (before the new one) is DDR2-667Mhz or DDR2-800Mhz?

A friend told me it is better to put a 667Mhz than a 800Mhz! Why?

No, it's 800. Just bought exactly that Mac and let them install 4GB of memory. The receipt said 800, the sticker on the iMac box said 800 and in OSX it said 800. So I think your friend might be confused with the older aluminium model, which did use 667mhz RAM.
 
Thats it I would like to know...if it makes any difference and if they are reputable.

Yeah, that's kinda what I was saying. There really isn't any difference - at all. Check your CL ratings and warrantee periods.

Another suggestion?

Thank you.

I just (3 hrs ago) bought 8gigs total for $180.

I bought two of these: http://www.newegg.ca/Product/Product.aspx?Item=N82E16820208422 but in Japan where I live they're about $90 each instead of $175. :) These are MP DIMMs but the same thing (stated above) applies for your iMac too.

CL on these is programmable 3, 4, or 5. and Transcend offers a lifetime guarantee on those. $22.50 a gig seems nice to me. :)
 
I guess I'm the only one here that had a run of bad luck with Crucial ram sticks because I had bunch of them go bad on me after few years. So far I've had no problems with Kingston and Mushkin. One more thing. Buying a used ram on eBay is very risky. I learned the hard way that eBay's so called buyer protection is a complete joke. Always buy from reputable vendor like Newegg or OWC.
 
You want to match the RAM speed w/ the bus speed. Using 800Mhz RAM isn't going to be faster in a 667Mhz machine. If you are lucky it will downclock to 667Mhz. At worst your Mac will spit it back at you and you'll have to go through the hassle of getting the right RAM.

Any decent ram will downclock. In my experience it's the ultra cheap and often dodgy ram that misses out all the SPD information and you have to set manually (on a pc obviously you cannot on apple).

To be honest I avoid it.

There is some reason to go for higher speed ram though, it often has better latency at th lower speed than the slower ram. Though really this is gonna make no real world difference to anyone.

I always go with crucial and get speed that is the cheapest, or the higher speed if they are all the same price as often happens.
 
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