800Mhz A1G3XE the best choice than the 800Mhz A1G4XE?

[ksk]

I think the speed difference is small overall.

Bandwidth hungry apps like specmark and 68k emulator would benefit from the larger cache of the 750FX.  But I would expect that G4 would do things like DVD playing on lower CPU overhead with the help of altivec instructions. I'm sure Moovid vill be updated pretty soon affter AOS4 release to  take advantage of Altivec.

(I buy the G4 model after AOS4 is released ... unless I get tired of waiting and go for the MorphOS instead)

[ksk]

@HyperionMP

I think one can not trust in those benchmarks.

According to Mot the FX model would not be any faster than CXe. I bet Mot has taken the values from thin air.

Even G4 values are twisted. I bet the backside cache of some G4's improve the results, etc...

In short: Motorolla is bluffing there, but hey, it's marketing material after all.

[ksk]

@HyperionMP

From IBM.com...

for 900 Mhz 750FX SpecInt95 39.9 and SpecFp95 21.8 ...and after I brutally scale it to 733Mhz, it's 31 and 17.

for 700 Mhz 750CXe SpecInt95 is 27.2peak (matches motorollas value for 733Mhz chip) and 25.5base, fp is 14.3peak and 13.9base. If I scale the  CXe to 733, its "only" 28.5peak and ...

Anyway... values do not match. FX should have better spec values than what Motorolla admits, etc etc. I bet IBM knows their own chips better than Motorolla.

IMO, it's clear that Motorolla PR man has just cut&pasted those 700Mhz 750CXe values to both 733 CXe and to 733FX ... damn, there is not even a CPU clock multiplier for a 733Mhz CXe...

But anyway, let's forget about that PR material.

IMHO:  the speed advantage of G4 at the same clock is not significant, especially if Altivec is not utilized. (I'm still going to go for the G4...)

OFF TOPIC:
@HyperionMP

Have anyone managed to run any SMP apps on LinuxPPC on (any) ArtisiaS machine(s)?


((btw.  none of this is meant as a offending post, just my points and a fair question))

[ksk]

Helgis75, if you want to start playing with the LinuxPPC before AOS4 ships, go for it. Do not worry wether it's G3 or G4.

No matter how it ends up, you can most likely upgrade the CPU easily, if you later deside so.

If the G4 model is not available when AOS4 ships I get the other chip, if it's available.

[ksk]

@Helgis75
>But clearly, the G4 must be the best one, right? Many reasons for that, isn't it?

The comparisson is not simple.

G4 has the Altivec, 750FX has larger cache, G4 has extra instruction unit, 750FX has shorter instruction pipeline, G4 can have L3 cache, 750FX consumes only 5.7W of power at 1Ghz, etc...

 With the Altivec optimized code G4 can do unbelieveable things in scientific applications and it does have faster FPU... and it has better SMP support than the G3.

IMO: G4 is slightly better.  If G4 is fully used it's a lot better...


I think some Hyperion guy once said that Warp3D might benefit from Altivec ... that could yield better 3D performance...

[ksk]

Ami603 wrote:...
i can Have OS4 Sooner than you,in fact,i ALREADY have it!
:-D:-D

Damn! I hate when people do that ... uh ... now where's my heart medicine ...

Ok, now. .. are you betatesting the AOS4 parts on 68k or what ...

[ksk]

I've understood that (at least some) SCRIPTS SCSI controllers for the PCI slot should work.