PDA

View Full Version : 8 cores



robk
11-08-2007, 07:13 PM
Does anyone have a computer with dual socket (2) quad core chips. I was thinking a ASUS DSBV-DX for about $255 motherboard with 2 xeon socket 771 E5320 chips @ $303 each.
The only concern is the chips are only 1.8 ghz and would a person be better off getting some faster dual core xeon's instead.
Opinions please.

Pavlov
11-09-2007, 12:54 AM
i have a 1.86 ghz dual quadcore and it runs pretty fast. Just 20% faster, anyway, than other machines i have, like quadcores (Q6600, 2.6 ghz overclocked to 3.0 ghz).
By now investing on a 8 core has sense only for licensing or space issues, they are much more costly than quads by now i proportion.
Best bang for the buck today are those Q6600 overclocked to 3.0, afaik.


Paolo

zapper1998
11-09-2007, 05:18 PM
But, 1.8 ghz X 8 = ALLOT of HORSE POWER 64 bit wise...

I have been looking at the same thing myself

Sensei
11-09-2007, 05:24 PM
i have a 1.86 ghz dual quadcore and it runs pretty fast. Just 20% faster, anyway, than other machines i have, like quadcores (Q6600, 2.6 ghz overclocked to 3.0 ghz).


8 * 1.86 = 14.88 GHz
4 * 3.0 = 12 GHz

12 GHz + 24% = 14.88 GHz..

So, it fits almost perfectly.. :)

For working single-core GHz fastest machine is better, but for rendering final GHz is better..

robk
11-10-2007, 05:32 PM
I have heard that your FSB speed is divided among all the cores on your computer so it's not like every core is getting the full 1.8 GHz actual 1.8 GHz is divided between the four cores. If this is true a dual core running at a higher speed might be a lot more efficient. I was thinking of using these machines for render boxes rather than for using them for regular for a regular working machine.
Thank you for the replies it's much appreciated.

Pavlov
11-10-2007, 06:22 PM
During modeling and layout operations, you use only one core. So actually this 8 core is even slower than a old P4 3.4 ghz for this.
For rendering you use all cores and scaling is pretty linear both on quads and on dual quads, at least in my experience.

Paolo

JonW
11-10-2007, 07:41 PM
Xeon 5335 x 2, Intel S5000XVNSATA M.B., 8gb ram, 8600GTS, Intel SC5299WS case, XP64, 320hd. Very fast machine, Very noisy you will need to put it behind baffling, but it is worth it. I should have gone for the 5345, they are probably the best price per Ghz, and still only 80 watts each. AU$3615 in September from the local typical Computer shop.

Scazzino
11-10-2007, 08:27 PM
I've got the 8-core 3GHz Mac Pro (24GHz) (http://www.apple.com/macpro/) with 5 GB RAM and the ATI Radeon X1900-XT driving dual monitors.

It screams and is surprisingly silent... ;)

DogBoy
11-11-2007, 05:33 AM
I have heard that your FSB speed is divided among all the cores on your computer so it's not like every core is getting the full 1.8 GHz actual 1.8 GHz is divided between the four cores. If this is true a dual core running at a higher speed might be a lot more efficient. I was thinking of using these machines for render boxes rather than for using them for regular for a regular working machine.
Thank you for the replies it's much appreciated.

Um, the front side bus isn't 1.8GHz (we wish it were). the FSB is usually 800, 1066 or 1333MHz. THAT does get split between cores, but that is about how much memory throughput each core can get. Each core still runs at 1.8GHz, it just might need to twiddle it's (virtual) thumbs if it can't get data in time.

cresshead
11-11-2007, 07:48 AM
It screams and is surprisingly silent... ;)

:D gotta be the funny quote of the day!
...is it in space?[where no one can hear you scream...alien]

:thumbsup:

Scazzino
11-11-2007, 08:26 AM
:D gotta be the funny quote of the day!
...is it in space?[where no one can hear you scream...alien]

:thumbsup:

Ha, I was wondering if anyone would notice that... ;)

DogBoy
11-11-2007, 09:08 AM
I name this Mac, the Good Mac Nostromo! God bless her and all who run her! Hip hip HOORAH!!!

:D

byte_fx
11-12-2007, 11:31 AM
:D gotta be the funny quote of the day!
...is it in space?[where no one can hear you scream...alien]

:thumbsup:

maybe.

all I know is they distort the space/time continuum in ways I've never before experienced.

And expect a speed boost of up to 50% in the near future when Mac Pros come with top of the line Penryn cpus.

Apple's already finalized the system and is only waiting on Intel to provide the needed anticipated volume of units.

At present it looks as though the new Mac Pro should be available before Christamas - maybe even the last of this month but surely by mid-Janurary.

byte_fx

gerry_g
11-12-2007, 12:44 PM
Very fast machine, Very noisy you will need to put it behind baffling

My 8 core Intel Mac is very quiet, quieter than my dual core to the point that it freaks me out sometimes, like I'm thinking, has it stopped working ?? Also they're great on cold winter nights, instead of turning the radiator up, I find myself thinking what can I render to keep warm ??