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It isn't the first time Apple has underclocked their video cards. The Mobility X1600 was underclocked as well. Our surprise was that it was a Mobility HD 2600 XT in the new iMacs while Apple was labeling it as the desktop 2600 Pro.

It's getting a little old that we're still discussing the identity of the iMac's video card.

yes i agree there are other posts that have verified the status of the iMacs GPU... moving on...
 
Go read the 60 page post (or however long it is at this point). Basically when the imacs first came out someone installed XP in bootcamp on it and looked at the video card and it labeled it as a 2600 XT (which it is)... everyone got excited and was wondering why apple didn't just market it like that (which everyone wanted). People did lots of performance tests on it and it wasn't performing as well as XTs which lead to further investigation which revealed that the chip was being underclocked. That's why it should not be considered an XT - because it doesn't perform as well and if you clock it to XT speeds it becomes unstable.

I know that. That's how I learned this...

It isn't the first time Apple has underclocked their video cards. The Mobility X1600 was underclocked as well. Our surprise was that it was a Mobility HD 2600 XT in the new iMacs while Apple was labeling it as the desktop 2600 Pro.

It's getting a little old that we're still discussing the identity of the iMac's video card.

yes i agree there are other posts that have verified the status of the iMacs GPU... moving on...

I know, its getting annoying, I thought I settled it:mad::mad::mad:

QUAD CORE IMACS!!!!

thank you for your time.
 
be patient young one be patient.. they will come, save some money, give it time. trust me :p

not dying for them, just want what i explained earlier, a quad core option on the 24" that will mean that the case will have a bigger bulge to hold an extra fan. so that it could cool it. even better...well, i lets not get on that "topic" again;).
 
I don't see much of a reason for Apple to keep making the iMac thinner with each revision. The switch to Aluminium led to an increase in internal temperatures and a much more obvious external increase as well due to the aluminium.

Remember that the iMac at one point did use desktop processors. I guess Apple wanted to get an Intel Mac out as soon as possible and found that the Core Duo was more then enough of a performance increase over the G5 then waiting for Core 2 Duo (Conroe). Once they adopted the the Intel mobile platform they stuck with it.

A minor suggestion but you all should set your number of posts shows per page to 40.
 
I don't see much of a reason for Apple to keep making the iMac thinner with each revision. The switch to Aluminium led to an increase in internal temperatures and a much more obvious external increase as well due to the aluminium.

Remember that the iMac at one point did use desktop processors. I guess Apple wanted to get an Intel Mac out as soon as possible and found that the Core Duo was more then enough of a performance increase over the G5 then waiting for Core 2 Duo (Conroe). Once they adopted the the Intel mobile platform they stuck with it.

A minor suggestion but you all should set your number of posts shows per page to 40.

The iMac is just right 20" is too far. A bigger bulge, and make the inside into a /\ shape, except with an obtuse angle, then they will have more space for fans and such, but doing so does not allow an upgrade for the components from the back cover from which i would also like.
 
Deration

As people have pointed out, the 2600 is underclocked. But please don't just think it is a heat issue. Heat comes into it of course, the designers are more concerned with reliability.

As a Design Manager for a well known consumer electronics company, I can tell you this: Typically we are given a spec. telling us what the product life time should, 2 years 5 years or sometimes 10 years, all quoted in hours. On this basis we make our first engineering samples to conduct design validation trials, for such things as component open and short circuit tests, as there are many safety directives in many countries that dictate how a product should fail and fail safely in the event of a fault. We conduct EMC trials and most importantly deration/performance tests. The unit is loaded as it would be in normal use and measurements are taken at high, low and average line voltages. So for a 1 watt resistor for example, we would never run it at more tan 50% of its capability, as anything more could shorten its life, this applies to all components, we use a 70% limit for semiconductors and 50% pretty much for everything else. We also take into account the ambient temperatures that it may see, +50 deg.C and say -10 Deg.C. With all this data we use a nice little piece of reliability software that calculates the expected life of the product. If it spits out a figure that is too high, we can take cost out and vice versa. The biggest weakness in most electronics is the electrolytic capacitors, they have to be kept cool or their life expectation drops rapidly. So that is just a small insight into electronics design.
So in a nut shell, they don't like hot stuff in the cases as product fails and is returned, they lose money and reputation. If you ever wonder why some Panasonic, Sony or other reputable brands sometimes cost more, it is because the spec says 80,000hrs or 100,000 hrs MTBF.
You could off course overclock it, add big heatsinks and fans, cut a hole in the case to get the air volume and parts in, but it would not look nice and your warranty is up the creek..LoL
 
As people have pointed out, the 2600 is underclocked. But please don't just think it is a heat issue. Heat comes into it of course, the designers are more concerned with reliability.

As a Design Manager for a well known consumer electronics company, I can tell you this: Typically we are given a spec. telling us what the product life time should, 2 years 5 years or sometimes 10 years, all quoted in hours. On this basis we make our first engineering samples to conduct design validation trials, for such things as component open and short circuit tests, as there are many safety directives in many countries that dictate how a product should fail and fail safely in the event of a fault. We conduct EMC trials and most importantly deration/performance tests. The unit is loaded as it would be in normal use and measurements are taken at high, low and average line voltages. So for a 1 watt resistor for example, we would never run it at more tan 50% of its capability, as anything more could shorten its life, this applies to all components, we use a 70% limit for semiconductors and 50% pretty much for everything else. We also take into account the ambient temperatures that it may see, +50 deg.C and say -10 Deg.C. With all this data we use a nice little piece of reliability software that calculates the expected life of the product. If it spits out a figure that is too high, we can take cost out and vice versa. The biggest weakness in most electronics is the electrolytic capacitors, they have to be kept cool or their life expectation drops rapidly. So that is just a small insight into electronics design.
So in a nut shell, they don't like hot stuff in the cases as product fails and is returned, they lose money and reputation. If you ever wonder why some Panasonic, Sony or other reputable brands sometimes cost more, it is because the spec says 80,000hrs or 100,000 hrs MTBF.
You could off course overclock it, add big heatsinks and fans, cut a hole in the case to get the air volume and parts in, but it would not look nice and your warranty is up the creek..LoL

Thank you for your input. But we are kinda off that discussion now. sorry.
 
I didnt read all the replies due to some bantering but to answer the original poster.. There will not be a quad-core chip of any kind in an iMac for a looong time if ever.

The first problem is heat. A quad-core in such a confined space no matter if its 90nm or 68nm chip will over heat basically at startup. The second problem also has to do with the depth of the current model iMac. I believe its around 1.7 inches (dont quote me on that) but the standard power supply would not be enough to power the cpu, gpu, and other components involved. Apple would have to completly change the design of the case ofr iMac to fit a higher watt power supply or have the power brick the size of the xbox 360's on the outside of the case itself and I just don't see them doing that.

Though what i said in the reply before is true (about heat, design of case, and power supply) I researched more on the intel quad cores and found this.

Intel has released details on a new 45nm chip called Penryn. This is basically the chip size the iMac would need where-as before the chip size was 65nm. So there is potential for a quad core iMac it'll just need a new case design and the price will probably be insane but hey it's a step forward for iMac i suppose.
 
Though what i said in the reply before is true (about heat, design of case, and power supply) I researched more on the intel quad cores and found this.

Intel has released details on a new 45nm chip called Penryn. This is basically the chip size the iMac would need where-as before the chip size was 65nm. So there is potential for a quad core iMac it'll just need a new case design and the price will probably be insane but hey it's a step forward for iMac i suppose.

Heat. The would need an extra fan, or a place for a air to flow.
 
If there is an untapped, hugely profitable market out there for a consumer desktop, don't you think Apple would be making them?

since apple specializes in finding and defining new markets, I don't see the urgency for delving into an existing market, no matter how much we might like it...
 
To sum up - I guess the answer to the OP is that it is feasable that in the 1H/2009 an iMac w/ a quad core CPU could be released. Then your iMac will be around 4 years old and you will get a very nice replacement.
 
What I dont understand is why MBP is more powerful than the most expenssive Imac.


If its true that MBP will get an 8800 GT card, then I dont understand why a large Imac would not be able to get one aswell. They are both based on mobile technology but Imac 24 has so much more room in it, than a 17 inch.


I dont see how they compare. people say that Mac Pro is for power, but IMO it seems like Mac Pro is for serious power users. Normal folks and semi pros just want an Imac because of the design.

This is also why I think it defeats the purpose of an Imac to make it headless. the build in screen is the trademark of it. its what makes it iconic.
 
What I dont understand is why MBP is more powerful than the most expenssive Imac.


If its true that MBP will get an 8800 GT card, then I dont understand why a large Imac would not be able to get one aswell. They are both based on mobile technology but Imac 24 has so much more room in it, than a 17 inch.


I dont see how they compare. people say that Mac Pro is for power, but IMO it seems like Mac Pro is for serious power users. Normal folks and semi pros just want an Imac because of the design.

This is also why I think it defeats the purpose of an Imac to make it headless. the build in screen is the trademark of it. its what makes it iconic.

the most expensive iMac beats the MBP, the only thing that the MBP beats in is the GPU, iMac defeats in everything else.
 
Everyone but Apple offers an affordable desktop quad core right now. Ranging from the lackluster AMD Phenom to the current favorite son Intel and their Q6600. I've seen Fry's and Best Buy run quad core towers for $799.

Quad iMacs with 8+ GB RAM

Why should Apple offer something everyone else already offers?

Think Different ;)

Intel is launching a 40-Watt Quad-core in the following weeks, it could be possible although not with the current chipset used in the iMac.
 
Why should Apple offer something everyone else already offers?

Think Different ;)

Intel is launching a 40-Watt Quad-core in the following weeks, it could be possible although not with the current chipset used in the iMac.
Intel has had low voltage Xeon processors for ages.
 
quad, schmad, gimme RAM!

I'd much rather have one that has more memory slots, let's say 4 instead of 2, so that even with this generation memory you could get 8Gb instead of the already skimpy 4Gb. Of course if there are plans to make 4Gb modules instead of the now max 2, I'd be also happy (for the moment). :p
 
I'd much rather have one that has more memory slots, let's say 4 instead of 2, so that even with this generation memory you could get 8Gb instead of the already skimpy 4Gb. Of course if there are plans to make 4Gb modules instead of the now max 2, I'd be also happy (for the moment). :p

What programs are you using on an imac that require 8gb of ram?
 
You said it right there my friend.

thankyou :) its a once in a blue-blue moon^2 that i get something right. ill take it!!! :p

Surely if you need 8 Gb of ram, you would be better off buying a Mac Pro ... :eek:

yes thats true, the base MP + 8gb RAM would probably be around the same as a maxed out iMac, and you get the expandability and quad core vs. dual core. better gpu options aswell
 
Yes, and if you needed a quad core machine you'd be buying a Mac Pro. The iMac is a consumer machine, and consumers don't need 4 cores. What would most consumers use them for, to browse the internet faster than ever?

The iMac is pretty much expendable because of the built-in screen. I love the design, but Apple isn't going to put anything in the iMac until the price falls below a certain point. In other words, there isn't going to be a $4,000 iMac.
 
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