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Fastest ram speed in iMac 2009

Arkious

Arkious

macrumors 6502a
Original poster
Mar 14, 2011
583
0
Newcastle, UK
As above really...

What is the max ram speed the mac can handle... And will ones with heatsinks fit? (never actually looked inside the ram caddy as of yet)
 
Really? Even the 27" i7 version only takes 1066?

I didn't realise there was a big difference between the late 2009 nd the 2010
 
Arkious said:
Really? Even the 27" i7 version only takes 1066?

I didn't realise there was a big difference between the late 2009 nd the 2010
Click to expand...

That was all that was offered until last year. Honestly, the difference is unnoticeable. It would even be hard to notice the difference between DDR3 and DDR2, as the speeds are just that fast
 
Ahh okay that makes me feel better :-D obviously there is no way of getting into the bios to alter timings etc... I'm new to all this mac side of things that's all but thanks a bunch

Just trying to get the most out of mine, gonna fit an internal Blu-ray drive also I know they are more pricey but the whole idea of the iMac is it's uniform body... Don't want extra bits attached to it or I woulda bought a pc :-D
 
The 2009 i7 iMac will recognize DDR 1333 RAM. There was a thread on here where a guy swapped out his 1066 for 1333 RAM and he said the difference was noticeable. The system profile actually shows they are running at 1333 as well. I'm getting ready to make the upgrade myself from 8GB 1066 to 16GB 1333.
 
Using faster memory won't increase performance at all. The computer will just slow down the ram's speed.
 
I don't understand your comments at all? If higher speed ram made no difference why was it created an why is it installed in the current generation of iMac? When it comes to simple computing I would agree but high intensity graphical applications would see an improvement?

Does anyone know if the ram I have linked would be any good or is it just cheap crap? Are Lattancys higher in so-dimm modules than standard dimm?
 
Arkious said:
I don't understand your comments at all? If higher speed ram made no difference why was it created an why is it installed in the current generation of iMac? When it comes to simple computing I would agree but high intensity graphical applications would see an improvement?
Click to expand...

Some apps, although very few, can take advantage of such high memory bandwidths. Most commercial software can't. Technology develops even though most people don't notice the difference.

Does anyone know if the ram I have linked would be any good or is it just cheap crap? Are Lattancys higher in so-dimm modules than standard dimm?
Click to expand...

Seems to be compatible but the brand doesn't ring a bell in my head.
 
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Okay cool, thanks a bunch

What about latencies... They make a difference on macs?
 
You might notice a ram bandwidth difference when gaming, and it might give you a couple more fps (like only 2-3), but that's about the only circumstance I could see for the average user.

Ram latency you probably won't notice either.


About the ONLY justification people have given for 1333mhz ram in their 09 iMcas was synthetic benchmark results.
 
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Okay thanks very much :)
 
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