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2ghz G4 upgrades out at giga-designs
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Mac Elite
Join Date: Feb 2002
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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! 
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Senior User
Join Date: Dec 2004
Location: Earth
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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 
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Mac Elite
Join Date: Sep 2004
Location: Theory - everything works in theory
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Moderator Emeritus  Join Date: Sep 2001
Location: Arizona
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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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I like chicken
I like liver
Meow Mix, Meow Mix
Please de-liv-er
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Senior User
Join Date: Oct 1999
Location: Sin City�, USA
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Has anyone heard any rumblings on when Giga may release a DUAL 2Ghz upgrade?
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To dislike Sinatra is a sign of highly questionable taste. To dislike the Beatles is a serious character flaw.
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Mac Elite
Join Date: Feb 2002
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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.
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Fresh-Faced Recruit
Join Date: Jul 2003
Location: British Columbia, Canada
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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?
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Moderator Emeritus Join Date: Sep 2001
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I like chicken
I like liver
Meow Mix, Meow Mix
Please de-liv-er
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Mac Elite
Join Date: Feb 2002
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It does have a different heat sink than the other pictures... I wonder if that's a silver heat sink?
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Senior User
Join Date: Dec 2004
Location: Earth
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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.
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Forum Regular
Join Date: Nov 2003
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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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iMac 20in, 2.0Ghz, 1.5GB Ram, Mac OS X 10.4 - Windows XP Pro
PowerBook 12in, 1.5Ghz G4, 1.25GB Ram, Mac OS X 10.4
PowerMac 1.3Ghz G4, 1GB Ram, Radeon 8500, OS X Server 10.4
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Moderator Emeritus Join Date: Sep 2001
Location: Arizona
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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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I like chicken
I like liver
Meow Mix, Meow Mix
Please de-liv-er
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Dedicated MacNNer
Join Date: Jul 2004
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Not to mention this upgrade lacks L3 cache...
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Fresh-Faced Recruit
Join Date: Apr 2005
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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
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Mac Elite
Join Date: Apr 2000
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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
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Posting Junkie
Join Date: Jun 2003
Location: Dangling something in the water… of the Arabian Sea
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Originally Posted by villalobos
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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