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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > 2ghz G4 upgrades out at giga-designs

2ghz G4 upgrades out at giga-designs
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Tyre MacAdmin
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Apr 13, 2005, 05:17 AM
 
That's got to be some kind of record! The G4 is scaling past anything else I've ever seen.... 400mhz to 2ghz has got to be some kind of record!
     
MORT A POTTY
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Apr 13, 2005, 05:47 AM
 
Originally posted by Tyler McAdams:
That's got to be some kind of record! The G4 is scaling past anything else I've ever seen.... 400mhz to 2ghz has got to be some kind of record!
actually, the low-end was 350Mhz... and it's not even close to being done
     
E's Lil Theorem
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Apr 13, 2005, 03:23 PM
 
Originally posted by MORT A POTTY:
actually, the low-end was 350Mhz... and it's not even close to being done
Heh, and it only took 5.5 years; an average of 300MHz per year.

http://www.apple-history.com/frames/...ry&model=g4pci
     
Lateralus
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Apr 13, 2005, 03:39 PM
 
Normally, I'd say the road from 350MHz to 2000MHz is quite impressive for any processor, if it weren't for two things:

1) The transition from the 7400/7410 to the 7450 design pretty much reset the tables. In most respects, the 7450 is a different processor and shouldn't have even been labeled 'G4' by Apple. It came in at 667MHz, in 2001.

2) These 2GHz upgrades are overclocked 1.6GHz chips.

So, really, you've only got an evolution from 667MHz to 1.6GHz over four years. Still impressive for an arcitechture, but nothing spectacular.
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crooner
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Apr 13, 2005, 08:16 PM
 
Has anyone heard any rumblings on when Giga may release a DUAL 2Ghz upgrade?

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Tyre MacAdmin  (op)
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Apr 14, 2005, 09:15 PM
 
Originally Posted by crooner
Has anyone heard any rumblings on when Giga may release a DUAL 2Ghz upgrade?
That's the deal I'm waiting to upgrade with.
     
zed57
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Apr 15, 2005, 12:17 AM
 
Originally Posted by Lateralus
Normally, I'd say the road from 350MHz to 2000MHz is quite impressive for any processor, if it weren't for two things:

1) The transition from the 7400/7410 to the 7450 design pretty much reset the tables. In most respects, the 7450 is a different processor and shouldn't have even been labeled 'G4' by Apple. It came in at 667MHz, in 2001.

2) These 2GHz upgrades are overclocked 1.6GHz chips.

So, really, you've only got an evolution from 667MHz to 1.6GHz over four years. Still impressive for an arcitechture, but nothing spectacular.
the term overclocking refers to running a CPU at a higher speed than what the manufacturer sold it at or marked it. is giga-designs buying 1.6Ghz bin chips and selling them as 2Ghz?
     
Lateralus
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Apr 15, 2005, 12:48 AM
 
...yes.
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Tyre MacAdmin  (op)
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Apr 15, 2005, 02:53 AM
 
It does have a different heat sink than the other pictures... I wonder if that's a silver heat sink?
     
MORT A POTTY
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Apr 15, 2005, 12:07 PM
 
aluminum, perhaps... definitely doubt silver.

and don't count on dual 2Ghz... dual 1.8 is probably as good as the 7447A is gonna run at in a PowerMac. those things put off a TON of heat.
     
bovie
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Apr 19, 2005, 09:48 PM
 
A 2Ghz G4 is cool but Intel has made a greater scale
P4 1300mhz to 3730mhz and still going.

I do agree that the P4 is a easier proc to scale speed wise but, apple needs to get the 3ghz g5 out soon.
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Lateralus
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Apr 19, 2005, 11:42 PM
 
Not really. They're competing with AMD's Athlon64 and Opteron now. Apple and AMD are pretty much tied in the speed race, though AMD seems to have a bit of an advantage on the dual-core front over IBM for the moment.

If Apple is competing with any Intel offering, it is the Pentium M/Centrino.

And the P4 has been through more revisions than the G4 has since it's inception. Looking at it as going from 1.3 to 3.73 is even more inaccurate than looking at the G4 as going from 350MHz to 2GHz.
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efuseakay
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Apr 20, 2005, 12:31 AM
 
Not to mention this upgrade lacks L3 cache...
     
skilled2k1
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Apr 20, 2005, 02:33 PM
 
yes but it has 512k of L2 running at full speed where as the 7455 uses 256k L2 and 2mb L3 at 1/4th or 1/6th speed, so the 512k L2 does make up for some lost ground
     
villalobos
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Apr 20, 2005, 03:59 PM
 
Originally Posted by skilled2k1
yes but it has 512k of L2 running at full speed where as the 7455 uses 256k L2 and 2mb L3 at 1/4th or 1/6th speed, so the 512k L2 does make up for some lost ground
Still not all that impressive.

http://www.hardmac.com/article.php?id=48
     
Eug Wanker
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Apr 20, 2005, 04:03 PM
 
Originally Posted by villalobos
Still not all that impressive.

http://www.hardmac.com/article.php?id=48
It's not a huge improvement overall, but the L3-cacheless 2 GHz 7447A beats the 2 MB L3 cache-endowed 1.53 GHz 7455 in EVERY test in that article, and sometimes by a large amount. eg. 35% faster in Cinebench.
     
   
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