Just a matter of time... G4 @ 2ghz


wide

macrumors 6502a
May 17, 2004
746
0
NYC
I'd be interested to see if BareFeats will compare that to the PowerMac G5 line (both revisions). They will probably release a dual 2.0 GHz G4 soon too. Can't wait to see how that compares
 

atari1356

macrumors 68000
Feb 27, 2004
1,586
32
grapes911 said:
I want to buy a powerbook, but I'm waiting for the right time. A 2.0 G4 15inch would be the right time.
If you look closely it says:

"Powered by a Freescale (formerly Motorola) 1.6GHz 7447A processor"

So, they're using a 1.6GHz processor and just overclocking it to 2GHz. You may still have to wait a while before a 2GHz PowerBook is available...
 

Demon Hunter

macrumors 68020
Mar 30, 2004
2,245
38
Wow... the G4 never fails to amaze me. At this rate it'll be years before the G5 PowerBook...
 

grapes911

Moderator emeritus
Jul 28, 2003
6,943
3
Citizens Bank Park
atari1356 said:
If you look closely it says:

"Powered by a Freescale (formerly Motorola) 1.6GHz 7447A processor"

So, they're using a 1.6GHz processor and just overclocking it to 2GHz. You may still have to wait a while before a 2GHz PowerBook is available...
But if the 1.6 can be overclocked to 2GHz, then a 2GHz itself can't be far along. Will it be ever be in the pBook? Who knows. I don't see the g5 powerbooks coming anytime soon, so a speed bump to 2.0GHz might have to do.
 

auxplage

macrumors 6502
Nov 11, 2004
331
1
Virginia Beach
grapes911 said:
But if the 1.6 can be overclocked to 2GHz, then a 2GHz itself can't be far along. Will it be ever be in the pBook? Who knows. I don't see the g5 powerbooks coming anytime soon, so a speed bump to 2.0GHz might have to do.
The dual-core G4 in development supposedly is up to almost 2ghz with a 200mhz bus if I remember reading correctly on Freescale's website.
 

Caesar_091

macrumors 6502
Jan 18, 2005
257
10
Italy
Can't wait to view some benchs of these G4s.

Maybe at 2Ghz we'll not miss the lack of the L3 cache....
 

Lancetx

macrumors 68000
Aug 11, 2003
1,977
585
Texas
The L3 cache hasn't really been missed since they doubled up the L2 to 512KB a year or two ago. Besides, the L3 cache only ran at about 20% of the CPU speed anyway.
 

mgargan1

macrumors 65816
Feb 22, 2003
1,219
0
Reston, VA
Lancetx said:
The L3 cache hasn't really been missed since they doubled up the L2 to 512KB a year or two ago. Besides, the L3 cache only ran at about 20% of the CPU speed anyway.
2MB of L3 cache w/256kB of L2 is faster clock for clock than a 512k L2 w/out L3. this is because the G4 has a lower clockspeed, so it's starved for data, and the L3 cache really helps out. Now the 1MB of L3 cache w/ 256k of L2 is slower than the 512k. (hope this makes sense). But it all really depends on the app that you're using... most of them take advantage of the L3, if it's there.
 

MacsRgr8

macrumors 604
Sep 8, 2002
7,830
1,120
The Netherlands
Let's hope to see 2 GHz G4 PowerBooks and Mac minis in the near future aswell! :)

BTW.... I wonder how much of a factor the FSB will be. I can't help feeling that FSB "problem" was overrated when the G4 vs. P4 discussions were hot... especially if a grand L3 cache is used.
 

R.Youden

macrumors 68020
Apr 1, 2005
2,091
40
Last year I bought a 1.42GHz DP power mac and it is fantastic!! I ould have payed an extra £250 pounds and got a G5 but why. I think the G4 case looks better and it had two optical draws, thats a big bonus in my mind. I have also just ordered a 12" power book and I am not bothered if Apple brings a G5 laptop out next week. When ever I tryout a G5 I am not impressed with it. Both my computers can run stuff like Final Cut Pro and Adobe InDesign fine. Maybe I will regret it when Apple or whoever bring out something that needs a G5. Ah well thats my thoughts. Does anyone else feel that people are going over the top about these G5's.
 

jamdr

macrumors 6502a
Jul 20, 2003
660
0
Bay Area
mgargan1 said:
2MB of L3 cache w/256kB of L2 is faster clock for clock than a 512k L2 w/out L3. this is because the G4 has a lower clockspeed, so it's starved for data, and the L3 cache really helps out. Now the 1MB of L3 cache w/ 256k of L2 is slower than the 512k. (hope this makes sense). But it all really depends on the app that you're using... most of them take advantage of the L3, if it's there.
Do programmers really concern themselves with the presence of the L3 cache? Isn't that something the OS writers would take care of when they design the memory manangement system? How are apps written specifically to take advantage of the caches?
 

capone2

macrumors regular
Mar 29, 2005
221
0
chelsea-nyc
G5 over the top yes!

Richard Youden said:
Last year I bought a 1.42GHz DP power mac and it is fantastic!! I ould have payed an extra £250 pounds and got a G5 but why. I think the G4 case looks better and it had two optical draws, thats a big bonus in my mind. I have also just ordered a 12" power book and I am not bothered if Apple brings a G5 laptop out next week. When ever I tryout a G5 I am not impressed with it. Both my computers can run stuff like Final Cut Pro and Adobe InDesign fine. Maybe I will regret it when Apple or whoever bring out something that needs a G5. Ah well thats my thoughts. Does anyone else feel that people are going over the top about these G5's.

I heard the same thing about the DP G4 1.4, how great it is. First off, if the G4 hits 2gig with 167bus whats the point ? maybe with a 1mb of l2cache maaaaybe?? it just defeats the purpose the bus does all the work. I think g5 PB's in 6-9months or next january.
PB 17" 1.5GHZ 1GIGRAM
 

caveman_uk

Guest
Feb 17, 2003
2,391
1
Hitchin, Herts, UK
Lancetx said:
The L3 cache hasn't really been missed since they doubled up the L2 to 512KB a year or two ago. Besides, the L3 cache only ran at about 20% of the CPU speed anyway.
Gigadesigns did some tests and found that the Dual 1.42GHz with 2MB of L3 cache (the 7455 processor) was equivalent to a dual 7447A G4 running at 1.733GHz (The newer 7447A doesn't support L3 cache). See here for more details.

Those old MDDs don't seem so bad... ;)
 

Lord Blackadder

macrumors G5
May 7, 2004
13,523
2,558
Sod off
I'm disappointed in the 7447's performance as compared to the 7457 - the lack of cache causes a big performance hit. A 1.467 GHz 7457 with L3 cache can outrun Giga's 1.8GHz 7447, from what I've seen digging around xlr8yourmac.com. I'm a bit worried about the 400MHz overclock too. I haven't heard any reliability info on the 1.8s yet...and they are overclocked about the same.
 

bousozoku

Moderator emeritus
Jun 25, 2002
13,951
3
Gone but not forgotten.
Lord Blackadder said:
I'm disappointed in the 7447's performance as compared to the 7457 - the lack of cache causes a big performance hit. A 1.467 GHz 7457 with L3 cache can outrun Giga's 1.8GHz 7447, from what I've seen digging around xlr8yourmac.com. I'm a bit worried about the 400MHz overclock too. I haven't heard any reliability info on the 1.8s yet...and they are overclocked about the same.
Yes. Giga Design's latest designs seem more and more dodgy. I'd rather trust what PowerLogix is doing with their upgrades. They both 7457 and 7447A upgrades and don't use overclocking to get there.
 

Dont Hurt Me

macrumors 603
Dec 21, 2002
6,056
6
Yahooville S.C.
OWC seem to do the same, my old 1.4 is still humming along at 1.47 :) I think iam going to give it to my son. a 7447 @ 2.0 may edge out a 7455 @ 1.47 . Still Quicksilver is a solid machine 4-5 yrs later. perhaps a 9800 in the future. :D he would like that.
 

MacSA

macrumors 68000
Jun 4, 2003
1,804
5
UK
By the time Apple gets a G5 into a Powerbook it will be as far behind the competition in terms of processing power as the G4 is right now.
 

Rocksaurus

macrumors 6502a
Sep 14, 2003
652
0
California
MacSA said:
By the time Apple gets a G5 into a Powerbook it will be as far behind the competition in terms of processing power as the G4 is right now.
So where does that leave us? Dual Core G4's? Dual Core G5's? Something else?
 

dongmin

macrumors 68000
Jan 3, 2002
1,709
0
MacSA said:
By the time Apple gets a G5 into a Powerbook it will be as far behind the competition in terms of processing power as the G4 is right now.
Sounds like you're quite hardened by the continued disappointment of 'G5 PowerBooks Next Tuesday' failing to materialize. Remember though at when Apple first came out with the dual 2.0 ghz G5s, it pretty much leapfrogged the Intels and AMDs out there. Now Intem/AMd has caught up and passed it but Apple should be back up there with the next iteration.

My feeling about why it's taken Apple/IBM so long with the PB G5 is that they're designing a completely new mobile chip a la Pentium M. I'm hopeful that this G5 mobile will leapfrog the Pentium M when its out.
 

PlaceofDis

macrumors Core
Jan 6, 2004
19,232
4
wow this makes my 867 MHz powerbook look like a wimp, but hey it gets the job done, maybe by the time the Mac minis are up to 2.0 i will upgrade ;)
 

Demon Hunter

macrumors 68020
Mar 30, 2004
2,245
38
MacSA said:
By the time Apple gets a G5 into a Powerbook it will be as far behind the competition in terms of processing power as the G4 is right now.
Um.. what? The G5/P4 are having trouble getting ahead of themselves... the desktop hurdles have to be met before the laptop hurdles!
 

gekko513

macrumors 603
Oct 16, 2003
6,302
1
Looks like it's just overclocked

"Powered by a Freescale (formerly Motorola) 1.6GHz 7447A processor"

But the fact that a 1.6GHz factory rated processor can be overclocked to 2.0GHz and be stable should mean that the official rate could go up soon, too, shouldn't it?