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I'm not moaning, I'm explaining why people feel this is a poor update and as someone else has said, the boards are different as they are using two different types of Xeons now and the Xeon 3500s can not run on dual socket boards.
The architecture is definitely different, and can't be considered on a 1:1 clock scale any longer.

It would assume at this point, Apple is using a different board in the Quad core versions, and it would only have a single socket. The DP boards would allow a single processor to operate, even the W35xx parts. :eek: (Intel did nicely with QPI). ;)
how much would it cost to buy the 2.93ghz and replace the 2.26ghz Procs with them?

Is it even possible?
It would be possible, but not cost effective. Assuming you mean to upgrade later down the road, I doubt the prices will drop much below what we'd se in around Sept., provided it follows the same pattern as the Harpertowns did. The current economy may change this however. Not really sure at this point.

If you are serious about getting the new model, and can swing it, I'd go for the 2.66 at purchase, as it would be cheaper in the long run. (Or 2.93 if your needs warrant it). ;)
is it a good idea just to go with the old 2.8ghz? I'd save $1000 compared to the new low end 8 core.

was my $4600 best spent on the 2009 octo 2.66 (8gb RAM, GPU upgrade, 1tb HD. 2x superdrives. airport) or should i sell it when it arrives without opening the box and buy a refurb 2008 octo 3.2?
Justinm59 & Fomaphone: Wait for benchmarks on the new base model first before making a quick decision. I don't think we'll have to wait too long for Rob at barefeats to post. :)
 
The architecture is definitely different, and can't be considered on a 1:1 clock scale any longer.

It would assume at this point, Apple is using a different board in the Quad core versions, and it would only have a single socket. The DP boards would allow a single processor to operate, even the W35xx parts. :eek: (Intel did nicely with QPI). ;)

ehurtley said they wouldn't, so I took his word for it. Close to as official as we have right?
 
Hey, guys... um...

Apple's scalping 1066MHz RAM for the Mac Pro.

Would the Gainestown model be able to use third-party 1333MHz? It doesn't look like Apple is doing those proprietary heat sinks anymore, so is it possible for OWC to offer 1333MHz RAM down the line? Would that play nice with existing 1066, or would you have to swap all the RAM at once?

Just want to know for my purchase.

HOLD ON!

The Mac Pro 2.93GHz uses 1333mhz RAM. All the other ones use 1066MHz.
 
was my $4600 best spent on the 2009 octo 2.66 (8gb RAM, GPU upgrade, 1tb HD. 2x superdrives. airport) or should i sell it when it arrives without opening the box and buy a refurb 2008 octo 3.2?

I would presume about a 20% increase in performance between a 3.2 octo and a new 2.66 octo. I would wait for real performance test when folks get them and see if the apps you use will see much boost. I'm glad I snagged a refurb 2.8 last month.
 
I would presume about a 20% increase in performance between a 3.2 octo and a new 2.66 octo. I would wait for real performance test when folks get them and see if the apps you use will see much boost. I'm glad I snagged a refurb 2.8 last month.
From what's currently available information wise, this seems quite realistic. Benchmarks would be much better though. ;) :D
 
Does it? I didn't think so...

How can you tell? The BTO page on the store remains at 1066MHz when you choose the 2.93 option...

Well the 2.66GHz and 2.93GHz "octo" systems should be able to use 1333Mhz memory. The others can't. I wouldn't worry about it. Are you really going to need 32GB/s over 25.6GB/s memory bandwidth. And only to the processor the memory is attached to anyway as QPI is only 25.6GB/s.
 
I would presume about a 20% increase in performance between a 3.2 octo and a new 2.66 octo. I would wait for real performance test when folks get them and see if the apps you use will see much boost. I'm glad I snagged a refurb 2.8 last month.

I'm a FCP editor and the what I do often requires Motion/After Effects/Photoshop use while FCP is open. As soon as I'm out of school I'll be diving into Cinema 4D, Shake, and whatever else seems lucrative.

For the first few months that I have this machine, I'll be doing reel-building exclusively... mostly motion graphics work in After Effects. My only real deadlines are opportunities to get hired... nobody's paying me directly to use my machine.
 
Check wikipedia and a few other sites.

They point that the 2.66GHz+ Nehalems use 1333MHz ram. I think Apple made a mistake on their site.

http://en.wikipedia.org/wiki/Nehalem_(CPU_architecture)

Who should we believe?

They can use it, they don't need to.

Xeon X5570 2.93GHz and X5550 2.66GHz have 1333MHz memory controllers which provide 32GB/s from a tri-channel configuration.

Xeon E5520, 3540 and 3520 (the others being used) have 1066MHz memory controllers which provide 25.6GB/s to each processor when using tri-channel.

QPI @ 6.4GT/s is 32GB/s when using 20 bit wide links, but I don't know if the Mac Pro i using that or the 16 bit (25.6GB/s) that has been used on the i7s.
 
I'm not moaning, I'm explaining why people feel this is a poor update and as someone else has said, the boards are different as they are using two different types of Xeons now and the Xeon 3500s can not run on dual socket boards.

Huh, that's the first I've heard of that, what a cheap ass way to sell Xeon's. Reading the specs on the single core, it does state 3 DDR slots also. You ALWAYS used to be able to run with one CPU. Can't believe they've changed it. Don't understand why even bar cost cutting.
I understand even less the fact they don't have the Quadro card option? It's not like your gonna worry about it's cost when spending $10,000 is it?
There isn't much information on the 3500 on Intels site.
 
The single socket mobo is not the same as the dual socket one.
There's most definitely a noticeable price difference -- don't try to pretend otherwise.

Ummm, knowing Apple it IS the same mother board. But it's missing one of the daughter boards. It looks like the new systems have 4 slots of memory and one CPU on each (of two possible) daughter boards. Or it's two different daughter boards (?) one type haveing the one CPU and 4 ram slots while the other type has two procs and 8 slots. I wonder too if the chipset in on the daughterboard??? This is a faster design to be certain but it means that there is a custom part which Apple WILL refuse to sell separately thus making it impossible to upgrade on your own.

design_memory_wireframe20090303.png


design_expansion_hero20090303.png
 
Huh, that's the first I've heard of that, what a cheap ass way to sell Xeon's. Reading the specs on the single core, it does state 3 DDR slots also. You ALWAYS used to be able to run with one CPU. Can't believe they've changed it. Don't understand why even bar cost cutting.
I understand even less the fact they don't have the Quadro card option? It's not like your gonna worry about it's cost when spending $10,000 is it?
There isn't much information on the 3500 on Intels site.


They changed it as the 3500s offer the same performance as the 5500s but at a much lower price.

The 3500s aren't out until the end of the month so won't be on Intel's site, but they are EXACTLY the same as the Core i7s but with ECC memory support.
 
I'd believe Apple. Apple has the hardware in hand, Wikipedia doesn't have much.
The X5550 supports 1333MHz memory.

Check out this (Tom's Hardware). Their info came from Intel. Scroll down a bit. ;)

It will work with 1066 however. Going by Apple's BUY page, the memory does not offer 1333MHz memory with either the 2.66 or 2.93GHz model. Perhaps Apple doesn't want to spend the extra $$$ for it, and hamstringing the performance somewhat as a result. :(

It could still be swapped though.
Wikipedia has been VERY accurate lately.
It has. :) Updates have been quick too. ;)
 
They can use it, they don't need to.

Xeon X5570 2.93GHz and X5550 2.66GHz have 1333MHz memory controllers which provide 32GB/s from a tri-channel configuration.

Xeon E5520, 3540 and 3520 (the others being used) have 1066MHz memory controllers which provide 25.6GB/s to each processor when using tri-channel.

QPI @ 6.4GT/s is 32GB/s when using 20 bit wide links, but I don't know if the Mac Pro i using that or the 16 bit (25.6GB/s) that has been used on the i7s.

Which brings me back to me earlier questions:

I'm confused about the memory speeds on the new Mac Pro. Hopefully someone can help me...

1) The speed that is currently offered is 1066. Why did Apple not choose the faster 1333 memory speeds?

2) Also, I was under the impression that each new CPU could access up to 3 channels (DIMM slots), and if 3 slots are populated, this would give the best performance. Is this correct? Why is Apple offering 8 memory slots, and will performance be affected by the amount of memory modules used?

3) How are Apple/Intel getting 4 channels from a 3 channel memory controller? Something seems strange about this configuration.

Thanks!
 
He said something like Xeons 5500s will work in single socket boards, but 3500s and i7s wont work in dual socket boards.
Ahh..

They may have had to limit the QPI management to one way only. DP parts can switch off the unused channel, but in the case of Tylersburg 36D, it can't switch it off itself when using the W35xx.

I would certainly like to find out for certain.
They changed it as the 3500s offer the same performance as the 5500s but at a much lower price.

The 3500s aren't out until the end of the month so won't be on Intel's site, but they are EXACTLY the same as the Core i7s but with ECC memory support.
I just checked Intel's site an hour or so ago, and none of the 5500 or 3500 series parts are listed yet. I presume they're waiting to update the site when they officially release.
 
They changed it as the 3500s offer the same performance as the 5500s but at a much lower price.

The 3500s aren't out until the end of the month so won't be on Intel's site, but they are EXACTLY the same as the Core i7s but with ECC memory support.

Oh right, thanks matey. Must admit when you make your own Hardware can make the interior use trays etc with bespoke parts, I agree with the daughter board theory. But why worry if that is the case, you'll be able to buy it as a part through online suppliers. Will be interesting to see what Apple have done here.
 
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